阅读说明：本技术 发光二极管面板及其制作方法
(Light emitting diode panel and manufacturing method thereof
) 是由 罗国隆
刘品妙
陈昭文
吴宗典 于 2019-09-17 设计创作，主要内容包括：一种发光二极管面板包括第一基板、第二基板以及多个显示单元。显示单元配置于第一基板与第二基板之间。一个显示单元具有多个第一区以及被第一区所环绕的第二区。显示单元包括多个第一发光二极管、多条控制信号线与第二发光二极管。第一发光二极管的每N个构成一像素单元,且每一像素单元位于第一区的其中一者中,其中N为超过1的正整数。控制信号线配置于第一基板上,且分别朝向第一发光二极管延伸。第二发光二极管配置于第一基板上,位于第二区中,并被第一区围绕。第二发光二极管电性连接控制信号线的其中一条。(A light emitting diode panel includes a first substrate, a second substrate, and a plurality of display units. The display unit is arranged between the first substrate and the second substrate. A display unit has a plurality of first regions and a second region surrounded by the first regions. The display unit comprises a plurality of first light-emitting diodes, a plurality of control signal lines and second light-emitting diodes. Every N of the first light emitting diodes constitute a pixel unit, and each pixel unit is located in one of the first regions, wherein N is a positive integer exceeding 1. The control signal lines are configured on the first substrate and extend towards the first light emitting diodes respectively. The second light emitting diode is arranged on the first substrate, positioned in the second area and surrounded by the first area. The second light emitting diode is electrically connected with one of the control signal lines.)
1. A light emitting diode panel, comprising:
a first substrate;
a second substrate vertically assembled with the first substrate; and
a plurality of display units disposed between the first substrate and the second substrate, one of the display units having a plurality of first regions and a second region surrounded by the first regions, and including:
a plurality of first light emitting diodes disposed on the first substrate, wherein every N of the first light emitting diodes constitute a pixel unit, and each pixel unit is located in one of the first regions, wherein N is a positive integer greater than 1;
a plurality of control signal lines arranged on the first substrate and respectively extending towards the first light emitting diodes; and
a second LED arranged on the first substrate and in the second region and surrounded by the first regions
Wherein the second light emitting diode is electrically connected with one of the control signal lines.
2. The light-emitting diode panel of claim 1, wherein the display unit further comprises a repair line connected to the second light-emitting diode and the one of the control signal lines.
3. The light-emitting diode panel of claim 2, wherein the one of the control signal lines is disconnected between a connection point with the repair line and the one of the first light-emitting diodes.
4. The light-emitting diode panel of claim 2, wherein the repair line is disposed on the second substrate, and the light-emitting diode panel further comprises a connecting member connected between the repair line and the second light-emitting diode and connected between the one of the control signal lines and the repair line.
5. The led panel of claim 2, wherein the repair line comprises a first line segment, a second line segment and a connecting structure, one of the first line segment and the second line segment is connected to the one of the control signal lines, the other of the first line segment and the second line segment is connected to the second led, and the connecting structure connects the first line segment and the second line segment.
6. The LED panel of claim 5, wherein the first segment is on a different layer than the second segment, the first segment is interlaced with the second segment and the connecting structure comprises a fused structure at the intersection of the first segment and the second segment.
7. The LED panel of claim 5 wherein the repair line further comprises a third line segment that crosses over the first line segment and the second line segment, the connecting structure connecting the first line segment to the third line segment and also connecting the second line segment to the third line segment.
8. The led panel of claim 1, wherein the display unit further comprises a modified light modulation layer disposed on the second substrate and stacked on the second led.
9. The LED panel of claim 8, wherein the second LED is a white LED and the repair light modulation layer comprises a color filter layer.
10. The LED panel of claim 8, wherein the second LEDs are blue LEDs or UV LEDs, and the repair light modulation layer comprises a wavelength conversion layer.
11. The led panel of claim 10, wherein the repair light modulation layer further comprises a color filter layer.
12. The LED panel of claim 8, further comprising a barrier rib disposed on the second substrate between the first substrate and the second substrate, wherein the barrier rib surrounds the repairing light modulation layer.
13. The light-emitting diode panel of claim 8, further comprising a pixel light modulation layer disposed on the second substrate and overlying the one of the first light-emitting diodes.
14. The light-emitting diode panel of claim 1, wherein the first light-emitting diode corresponding to the one of the control signal lines is an inactive light-emitting diode.
15. The LED panel of claim 1, wherein the one of the display units comprises a plurality of second LEDs, and different second LEDs are electrically connected to different ones of the control signal lines.
16. The light-emitting diode panel of claim 1, wherein the number of second light-emitting diodes in different display units is different.
17. A method for manufacturing a light emitting diode panel is characterized by comprising the following steps:
transposing a plurality of first light emitting diodes and second light emitting diodes onto a first substrate, so that each of the first light emitting diodes is connected to a plurality of control signal lines disposed on the first substrate, wherein every N of the first light emitting diodes constitute a pixel unit, and each of the pixel units is located in a first region, where N is a positive integer exceeding 1, and the second light emitting diodes are located in a second region surrounded by the plurality of first regions;
a repairing step is carried out, and the second light-emitting diode is connected to one of the control signal lines;
forming a modified light modulation layer on the second substrate; and
the first substrate and the second substrate are assembled to make the repaired light modulation layer stacked on the second light emitting diode.
18. The method of claim 17, further comprising a step of detecting whether there is an invalid first LED before the step of repairing.
19. The method of claim 18, wherein the one of the control signal lines to which the second LED is connected extends toward the inactive first LED.
20. The method of claim 17, wherein a pixel light modulation layer is further formed on the second substrate before the repairing step, and the step of assembling the first substrate and the second substrate is performed to stack the pixel light modulation layer on one of the first light emitting diodes.
21. The method of claim 20, wherein a method of forming the modified light modulation layer is different from a method of forming the pixel light modulation layer.
22. The method of claim 17, wherein the repairing step further comprises disconnecting one of the control signal lines to electrically disconnect the one of the control signal lines from the corresponding first LED.
23. The method of claim 17, wherein the light modulation layer is formed by a photolithography process, an inkjet process, or a printing process.
24. The method of claim 17, wherein a barrier rib is further formed on the second substrate before the light-modulating layer is formed, and the light-modulating layer is formed in a space surrounded by the barrier rib.
Technical Field
The present invention relates to an electronic device, and more particularly, to a light emitting diode panel.
Background
Light emitting diodes have high light emitting efficiency, low power consumption, and high reliability, and are widely used in various fields. In the application of the display field, a technology of a display panel using micro light emitting diodes as a display structure has been developed. The micro light-emitting diode panel is manufactured by bonding the manufactured micro light-emitting diode array on a substrate in a batch transfer mode, and assembling the substrate bonded with the micro light-emitting diodes and an opposite substrate.
Micro light emitting diodes are small in size, typically less than 1 millimeter (mm) in side length, and even micro light emitting diode dies with side lengths of less than 10 micrometers (mum) have been developed with the development of technology. Micro-leds are not easily tested individually nor are individual micro-leds individually bonded to a substrate. Therefore, the micro-leds are mostly transferred to the substrate in batches. The micro-leds are not tested prior to transferring the micro-led batch to the substrate, which may result in some of the micro-leds being damaged, failing, or not being successfully transferred. Therefore, after transferring the micro led batches to the substrate, further inspection steps are often required to repair the failed or unsmooth transferred micro leds, so as to achieve an ideal yield.
Disclosure of Invention
The invention provides a micro light-emitting diode panel which is provided with a repairing structure for repairing to achieve an ideal yield.
The light emitting diode panel of an embodiment of the invention includes a first substrate, a second substrate and a plurality of display units. The second substrate and the first substrate are vertically assembled. The display units are arranged between the first substrate and the second substrate, and one of the display units is provided with a plurality of first areas and a second area surrounded by the first areas. The display unit comprises a plurality of first light-emitting diodes, a plurality of control signal lines and second light-emitting diodes. The first light emitting diodes are arranged on the first substrate, and every N of the first light emitting diodes form a pixel unit, and each pixel unit is positioned in one of the first areas, wherein N is a positive integer exceeding 1. The control signal lines are configured on the first substrate and extend towards the first light emitting diodes respectively. The second light emitting diode is arranged on the first substrate, positioned in the second area and surrounded by the first area. The second light emitting diode is electrically connected with one of the control signal lines.
The method for manufacturing the light emitting diode panel of the embodiment of the invention comprises the following steps. The first light-emitting diodes and the second light-emitting diodes are transposed to the first substrate, so that each first light-emitting diode is connected with a plurality of control signal lines configured on the first substrate. Every N of the first light-emitting diodes form a pixel unit, and each pixel unit is positioned in a first area, wherein N is a positive integer exceeding 1. The second light emitting diode is positioned in a second area, and the second area is surrounded by the plurality of first areas. And performing a repairing step to connect the second light emitting diode to one of the control signal lines. And forming a modified light modulation layer on the second substrate. The first substrate and the second substrate are assembled to make the repairing light modulation layer stacked on the second light emitting diode.
Based on the above, the led panel according to the embodiment of the invention further includes a second led for repairing in addition to the first led for predetermined display, and the installation region of the second led is surrounded by the installation regions of the plurality of first leds. When detecting that the first light emitting diode for the predetermined display is failed, the second light emitting diode can be electrically connected to the control signal line of the failed first light emitting diode, and the second light emitting diode replaces the failed first light emitting diode. Thus, the yield of the LED panel can be ensured. In addition, the second light emitting diode can be used for repairing any one of the plurality of first light emitting diodes at the periphery of the second light emitting diode so as to achieve good repairing efficiency.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a schematic top view of a micro led panel according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a light emitting diode panel according to another embodiment of the invention.
Fig. 3 is a side view of an led panel according to an embodiment of the invention.
Fig. 4 is a schematic side view of a light emitting diode panel according to another embodiment of the invention.
Fig. 5 is a schematic side view of an led panel according to still another embodiment of the invention.
Fig. 6 is a schematic side view of an led panel according to another embodiment of the invention.
Fig. 7 is a schematic top view of an led panel according to still another embodiment of the invention.
Fig. 8 is a schematic side view of a second region of an led panel according to an embodiment of the invention.
Fig. 9 is a schematic top view of a light emitting diode panel according to still another embodiment of the invention.
Fig. 10 is a schematic top view of a portion of an led panel according to another embodiment of the invention.
Fig. 11 is a partial top view of an led panel according to still another embodiment of the invention.
Fig. 12 is a partial top view of a light emitting diode panel according to yet another embodiment of the invention.
Fig. 13 is a partial side view of an led panel according to an embodiment of the invention.
Fig. 14 is a schematic circuit layout diagram of a single display unit of an led panel according to an embodiment of the invention.
Fig. 15 is a schematic circuit layout diagram of a single display unit of an led panel according to another embodiment of the present invention.
Fig. 16 is a schematic cross-sectional view of the repair line 150III in an embodiment.
Fig. 17 is a schematic circuit layout diagram of a single display unit of an led panel according to yet another embodiment of the present invention.
Wherein, the reference numbers:
100. 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300: light emitting diode panel
110. 110X: first light emitting diode
120. 120A, 120B, 120C: second light emitting diode
130. 130': control signal line
140: shared signal line
150. 150I, 150II, 150III, 150 IV: repair line
152. 152': first line segment
154. 154': second line segment
156. 156', 156A, 156B: connection structure
158: third line segment
160: first substrate
170: second substrate
180: barrier wall
190. 190A, 190B: light repairing and adjusting layer
192: first sublayer
194: second sub-layer
195. 195A, 195B: pixel light modulation layer
C150: connecting piece
And (3) CP: connection point
CR: at the place of intersection
DU, DU1, DU2, DUA, DUB, DUC: display unit
L1: first conductive layer
L2: second conductive layer
PX: pixel unit
R1: first region
R2: second region
SP: arrangement space
ST: transfer zone
W: welding structure
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
fig. 1 is a schematic top view of a micro led panel according to an embodiment of the invention. Referring to fig. 1, the led panel 100 includes a plurality of display units DU, which are arranged in an array in the top view and the display units DU can be distributed on the entire led panel 100 without a frame, but the embodiment is not limited thereto. As shown in the enlarged view of fig. 1, a single display unit DU may include a plurality of first light emitting diodes 110 and second light emitting diodes 120. Specifically, each display unit DU may be divided into a plurality of first regions R1 and a second region R2 surrounded by a plurality of first regions R1 according to the arrangement layout of the first light emitting diodes 110 and the second light emitting diodes 120.
Each N first light emitting diodes 110 of the plurality of first light emitting diodes 110 constitute a pixel unit PX, and each pixel unit PX is disposed in one of the first regions R1, where N is a positive integer exceeding 1. In fig. 1, N is 3 as an example, but not limited thereto. That is, in the present embodiment, each of the first regions R1 can be regarded as being defined by the region where 3 first light emitting diodes 110 are disposed. The first light emitting diode 110 can emit light of different colors and/or be matched with different light modulation layers to present different pixel colors. For example, the three first light emitting diodes 110 in the single first region R1 can be respectively used to represent color combinations of three colors of red, green and blue to form one pixel unit PX, but not limited thereto. In other alternative embodiments, N may be 2, 4 or other values, and the plurality of first light emitting diodes 110 in the single first region R1 may be configured to represent a color combination of red, green, blue, white or other colors.
A second light emitting diode 120 is disposed in the second region R2. In the present embodiment, four first regions R1 are around the second region R2, and each first region R1 is defined by one pixel unit PX. Therefore, it can be understood that the second region R2 refers to a region surrounded by a plurality of pixel units PX. In the present embodiment, there is no specific structural boundary between the first region R1 and the second region R2, and the boundary can be determined according to the layout of the pixel units PX.
Each of the display units DU of the light emitting diode panel 100 further includes a plurality of control signal lines 130 and a plurality of common signal lines 140. The control signal lines 130 extend toward the first light emitting diodes 110, respectively, and all of the first light emitting diodes 110 and the second light emitting diodes 120 are connected to the common signal line 140. Although the common signal lines 140 are shown as a plurality of lines in fig. 1, in some embodiments, the common signal lines 140 may be a continuous conductive layer or the common signal lines 140 are directly electrically connected to each other. In addition, when the led panel 100 is designed to be in an active driving type, each of the first leds 110 can be connected to an active device (not shown) through a corresponding control signal line 130. When the active device is a transistor, the active device may include a gate, a source and a drain, and each control signal line 130 may be connected to the drain of the corresponding active device, for example.
The first led 110 and the second led 120 are micro leds, and each micro led may include an led die and a first electrode and a second electrode (also referred to as a cathode and an anode) disposed on the led die. For example, the anode of each of the first light emitting diodes 110 may be electrically connected to a corresponding one of the control signal lines 130, and the cathodes of each of the first light emitting diodes 110 and the second light emitting diodes 120 are electrically connected to the common signal line 140.
When the led panel 100 is manufactured, the first leds 110 and the second leds 120 in the plurality of display units DU are transferred to a substrate (not shown) by batch transfer, and the leds can be detected until all the display units DU are manufactured. When a failed or unsuccessfully transferred first led 110 (i.e., a first led having a light emitting effect that does not meet a predetermined standard, for example, the first led 110X is described herein), a repair line 150 corresponding to the first led 110X may be fabricated, and the anode of the second led 120 is connected to the control signal line 130 corresponding to the first led 110X by using the repair line 150. In other words, in the present embodiment, the second light emitting diode 120 can be electrically connected to one of the control signal lines 130, and the one control signal line 130 extends toward the first light emitting diode 110X which is failed or not successfully transferred. Thus, the second led 120 can replace the failed or unsmooth shifted first led 110X for display and achieve the repairing effect. Since the second region R2 is surrounded by the plurality of first regions R1, the second light emitting diodes 120 in the second region R2 can be used to repair any first light emitting diodes 110 in the surrounding one region R1.
In some embodiments, after detecting the failed or unsuccessfully transferred first led 110X, in addition to fabricating the repair line 150, a light modulation layer may be selectively disposed on the second led 120, so that the color exhibited by the second led 120 after the light modulation layer is formed thereon is the same as the color of the pixel intended to be exhibited by the failed or unsuccessfully transferred first led 110X. In this way, all the pixel units PX can exhibit normal display effect.
Fig. 2 is a schematic diagram of a light emitting diode panel according to another embodiment of the invention. Referring to fig. 2, the led panel 200 is substantially similar to the led panel 100 of fig. 1, and has a plurality of display units DU, and each of the display units DU is divided into a plurality of first regions R1 and a second region R2 surrounded by the first regions R1. The single display unit DU may include a plurality of first light emitting diodes 110, second light emitting diodes 120, a plurality of control signal lines 130, a common signal line 140, and a repair line 150, and the configuration relationship of these components can be described with reference to fig. 1. One of the differences between the present embodiment and the embodiment of fig. 1 is that, of the first light emitting diodes 110, the first light emitting diode 110X is detected as being invalid, and the control signal line 130' is a control signal line originally connected to the first light emitting diode 110X. Meanwhile, the second light emitting diode 120 is connected to the connection point CP of the control signal line 130 'through the repair line 150, and this control signal line 130' is disconnected between the connection point CP and the corresponding first light emitting diode 110X. Therefore, the control signal line 130' is a control signal line extending toward the first light emitting diode 110X, but is not directly connected to the first light emitting diode 110X.
Specifically, the method for manufacturing the led panel 200 may be substantially the same as the method for manufacturing the led panel 100 of fig. 1. However, after detecting that the first led 110X is inactive, the led panel 200 cuts off the corresponding control signal line 130 'in addition to forming the repair line 150 to connect the second led 120 to the corresponding control signal line 130'. Thus, the control signal line 130' is no longer electrically connected to the corresponding first led 110X. The step of cutting off the control signal line 130 'may be laser cutting or other methods that can break the control signal line 130'.
Fig. 3 is a side view of an led panel according to an embodiment of the invention. Referring to fig. 3, the led panel 300 can be regarded as an embodiment of the led panel 100 or 200, and therefore the same or similar components in these embodiments are denoted by the same or similar reference numerals. In particular, some components that cannot be presented in a top view may be presented in a side view. In fig. 3, the led panel 300 includes a first substrate 160, a second substrate 170 and barrier ribs 180 in addition to a plurality of first leds 110, second leds 120, a plurality of control signal lines 130, a common signal line 140 and a repair line 150. However, in some embodiments, the barrier rib 180 may be omitted, and the first substrate 160 and the second substrate 170 may be assembled together by a sealant (not shown) or other assembling structure. The first led 110, the second led 120, the control signal line 130, the common signal line 140 and the repair line 150 are disposed on the first substrate 160. The barrier rib 180 is sandwiched between the first substrate 160 and the second substrate 170 to support the gap between the first substrate 160 and the second substrate 170.
In fig. 3, one side of each of the first and second light emitting diodes 110 and 120 is bonded to the first substrate 160, and the control signal line 130, the common signal line 140, and the repair line 150 extend to the other side of each of the first and second light emitting diodes 110 and 120. In other words, the first light emitting diode 110 and the second light emitting diode 120 shown in fig. 3 are illustrated as lateral (lateral) light emitting diodes, but in other alternative embodiments, the first light emitting diode 110 and the second light emitting diode 120 may be flip chip (flip chip) light emitting diodes. If a flip chip type led is used, the control signal line 130, the common signal line 140, and the repair line 150 are disposed between the first led 110 and the first substrate 160.
The method for manufacturing the led panel 300 may include the following steps and may be applied to manufacture the led panel 100 or 200, but not limited thereto. First, the plurality of first light emitting diodes 110 and the plurality of second light emitting diodes 120 are transposed onto the first substrate 160. The method of transposing the first led 110 and the second led 120 may include batch transfer. That is, the first led 110 and the second led 120 can be prefabricated and carried by the carrier. Next, a plurality of leds are removed from the support plate at a time using a pickup device, such as a PDMS template, a vacuum pickup tool, or the like, and the plurality of leds removed at the same time are placed and bonded on the first substrate 160. The transposing of the light emitting diodes is completed until all the light emitting diodes in the display unit DU are bonded to the first substrate 160.
In the present embodiment, the control signal lines 130 and the common signal lines 140 are already formed on the first substrate 160 before the leds are transferred to the first substrate 160. Before, after or during the step of transposing the leds, a step of forming a conductor connection (not labeled) may be included, such that each of the first leds 110 is connected to the plurality of control signal lines 130 and the common signal line 140 disposed on the first substrate 160, and the second leds 120 are connected to the common signal line 140 disposed on the first substrate 160. Each of the first light emitting diodes 110 may be connected to the plurality of control signal lines 130 and the common signal line 140 disposed on the first substrate 160 through a corresponding conductor connecting member (not labeled). The second light emitting diodes 120 are connected to the common signal line 140 through corresponding conductor connectors (not shown). The conductive connection (not labeled) may include, but is not limited to, a conductive layer, a conductive solder, or a wire bonding.
Next, a detection step may be performed to detect whether there is an invalid led in the first leds 110. If no invalid led is detected, the first substrate 160 and the second substrate 170 may be assembled to complete the led panel. If a failed or unsuccessfully transferred led, such as the first led 110X, is detected, the repairing process can be performed. The repairing step may include forming a repair line 150 to connect the second light emitting diode 120 to one of the control signal lines 130, that is, the one control signal line 130 corresponding to the first light emitting diode 110X. In this way, the second led 120 can receive the signal that is originally transmitted to the first led 110X to emit light. Then, the first substrate 160 and the second substrate 170 are assembled to complete the led panel 300. Although fig. 3 shows that the control signal line 130 connected to the repair line 150 continuously extends to contact the first light emitting diode 110X, in some embodiments, the control signal line 130 connected to the repair line 150 may be disconnected from the first light emitting diode 110X.
In some embodiments, the first light emitting diode 110X and the second light emitting diode 120 can emit light in the same wavelength range (exhibit the same color). For example, the first led 110X that is failed or not successfully transferred is a blue led, and the second led 120 is also a blue led. Therefore, the second led 120 itself can replace the failed or unsmooth shifted first led 110X to provide the same color light. In other embodiments, if the color of the light emitted by the second led 120 itself is different from the color that the first led 110X is intended to represent, the repairing step may further include forming a modified light modulation layer on the second led 120.
Fig. 4 is a schematic side view of a light emitting diode panel according to another embodiment of the invention. In fig. 4, the led panel 400 is substantially similar to the led panel 300 of fig. 3, and includes a plurality of first leds 110, a plurality of second leds 120, a plurality of control signal lines 130, a common signal line 140, a repair line 150, a first substrate 160, a second substrate 170, and barrier ribs 180, and the arrangement relationship of these components can be described with reference to fig. 3. One difference between the present embodiment and the embodiment of fig. 3 is that the led panel 400 further includes a light modification layer 190. Specifically, the repairing optical modulation layer 190 is disposed on the second substrate 170, and the repairing optical modulation layer 190 is stacked on the second light emitting diode 120.
The method for manufacturing the led panel 400 may include all the steps of the method for manufacturing the led panel 300, and further includes the step of forming the modified light modulation layer 190 on the second substrate 170 corresponding to the configuration position of the second led 120. In the present embodiment, after the first light emitting diodes 110 are all transposed to the first substrate 170 and connected to the corresponding control signal lines 130 and the common signal lines 140, the detection of the light emitting diodes can be performed. After detecting the failed or unsuccessfully transferred first led 110X, in addition to forming the repair line 150 to connect the second led 120 with the corresponding control signal line 130, a repair light modulation layer 190 is formed on the second substrate 170 at a position corresponding to the second led 120.
The modified light modulation layer 190 has a function of changing, adjusting or filtering a wavelength range of light passing through it, and can be used to match the second light emitting diode 120 to show a desired color. By selecting the type of the modified light modulation layer 190, the light emitted by the second led 120 can show a color predetermined to be shown by the failed or unsmooth transferred first led 110X after passing through the modified light modulation layer 190, so as to achieve the repairing effect.
For example, when the color of the sub-pixel to be displayed by the failed or unsmooth first led 110X is red, the type of the repairing optical modulation layer 190 should be selected such that the light emitted by the second led 120 passes through the repairing optical modulation layer 190 and then appears red. Similarly, when the color of the sub-pixel to be displayed by the failed or unsmooth first led 110X is blue or green, the type of the repairing optical modulation layer 190 should be selected to make the light emitted by the second led 120 display blue or green after passing through the repairing optical modulation layer 190.
For another example, when the second light emitting diode 120 is a white light emitting diode, the repairing light modulation layer 190 may be a color filter layer. When the second led 120 is a blue led or an ultraviolet led, the repairing optical modulation layer 190 may be a wavelength conversion layer. The color filter layer is a member capable of filtering wavelengths of light to allow light in a specific wavelength range to be absorbed or blocked by light in other wavelength ranges, and the material of the color filter layer includes a dye, a light absorbing material with a specific wavelength, and the like. The wavelength conversion layer is a member capable of absorbing light in a certain wavelength range and emitting light in another wavelength range, and the material thereof includes a fluorescent material, a quantum dot material, a phosphorescent material, and the like.
In addition, before the light-compensating and modulating layer 190 is formed on the second substrate 170, the barrier rib 180 may be formed on the second substrate 170, wherein the barrier rib 180 surrounds a plurality of configuration spaces SP, and each configuration space SP corresponds to one of the first light-emitting diode 110 and the second light-emitting diode 120. When the light-modifying modulation layer 190 is fabricated, a light modulation material (such as a color filter material, a light absorption material, a fluorescent material, a phosphorescent material, or a quantum dot material) may be formed in the configuration space SP corresponding to the second led 120 by inkjet, photolithography, printing, or the like. Therefore, the repair light modulation layer 190 may be surrounded by the barrier ribs 180.
After the light modification and modulation layer 190 is formed on the second substrate 170, the first substrate 160 and the second substrate 170 may be assembled to form the led panel 400. Here, the first substrate 160 and the second substrate 170 are assembled, for example, such that the modified light modulation layer 190 is stacked on the second light emitting diode 120, and the first light emitting diode 110 and the second light emitting diode 120 are both disposed between the first substrate 160 and the second substrate 170.
Fig. 5 is a schematic side view of an led panel according to still another embodiment of the invention. The led panel 500 of fig. 5 is substantially similar to the led panel 400 of fig. 4, and includes a plurality of first leds 110, a plurality of second leds 120, a plurality of control signal lines 130, a common signal line 140, a repair line 150, a first substrate 160, a second substrate 170, and barrier ribs 180, and the arrangement relationship of these components can be described with reference to fig. 4. One difference between the present embodiment and the embodiment of fig. 4 is that the light modification modulation layer 190' included in the led panel 500 includes a first sub-layer 192 and a second sub-layer 194, wherein one of the first sub-layer 192 and the second sub-layer 194 is a color filter layer and the other is a wavelength conversion layer.
In this embodiment, the wavelength range of the light emitted from the second light emitting diode 120 is suitable for exciting the wavelength conversion layer, so that the wavelength conversion layer converts the wavelength range of the light emitted from the second light emitting diode 120 into another wavelength range for emission. For example, the second led 120 can be a blue led or an ultraviolet led, but not limited thereto. In addition, the color filter layer of the present embodiment can be used to filter the wavelength range of the light emitted by the second light emitting diode 120 and/or the wavelength range of the light emitted by the wavelength conversion layer. As described in the previous embodiments, the modified light modulation layer 190' is used to adjust or change the color of the light emitted from the second led 120 such that the adjusted or changed color is the same as the color that the failed or unsmooth transferred first led 110X is intended to provide.
Fig. 6 is a schematic side view of an led panel according to another embodiment of the invention. The led panel 600 of fig. 6 is substantially similar to the led panel 400 of fig. 4, and includes a plurality of first leds 110, a plurality of second leds 120, a plurality of control signal lines 130, a common signal line 140, a repair line 150, a first substrate 160, a second substrate 170, a barrier rib 180, and a repair wavelength modulation layer 190, and the arrangement relationship of these components can be described with reference to fig. 4. One difference between the present embodiment and the embodiment of fig. 4 is that the led panel 600 further includes a pixel light modulation layer 195. The pixel light modulation layer 195 is disposed on the second substrate 170, and the number of the pixel light modulation layers 195 is multiple and each is stacked on one of the first light emitting diodes 110. In this embodiment, the pixel light modulation layer 195 may be disposed at least corresponding to a portion of the first light emitting diodes 110, such that each of the first light emitting diodes 110 is used to represent a corresponding color.
For example, when three first light emitting diodes 110 are disposed in a single first region R1, one of the first light emitting diodes 110 may not be associated with the pixel light modulation layer, another one of the first light emitting diodes 110 is associated with the pixel light modulation layer 195A, and the remaining first light emitting diodes 110 are associated with the pixel light modulation layer 195B. The pixel light modulation layer 195A may be used to change or filter the wavelength range of the light emitted from the corresponding first led 110 to exhibit a first color, and the pixel light modulation layer 195B may be used to change or filter the wavelength range of the light emitted from the corresponding first led 110 to exhibit a second color, while the wavelength range of the light emitted from the corresponding first led 110 without the pixel light modulation layer 195 is suitable for exhibiting a third color. The first, second and third colors may be different from each other, such as a combination of red, green and blue. At this time, the display of different gray scale pictures can be realized by utilizing the adjustment of the brightness ratios of the three colors. All the first light emitting diodes 110 of the present embodiment may be blue light emitting diodes, but the present invention is not limited thereto. In other embodiments, all of the first light emitting diodes 110 may correspond to one pixel light modulation layer 195, and all of the first light emitting diodes 110 may be white light emitting diodes, blue light emitting diodes or ultraviolet light emitting diodes.
The second light emitting diode 120 is used to repair the failed or unsuccessfully transferred first light emitting diode 110X. The light emitted from the second light emitting diode 120 passes through the corresponding light modulation layer 190 and then exhibits the same color as the light emitted from the first light emitting diode 110X passes through the corresponding pixel light modulation layer 195A. In some embodiments, the repairing light modulation layer 190 and the pixel light modulation layer 195A may be color filter layers made of the same material. In some embodiments, the repairing light modulation layer 190 and the pixel light modulation layer 195 can be manufactured by inkjet printing and photolithography, respectively.
The first led 110X and the second led 120 may be white leds, and the repairing light modulation layer 190 and the pixel light modulation layer 195 may be color filter layers. In addition, in other embodiments, the first light emitting diode 110X and the second light emitting diode 120 may be both blue light emitting diodes or ultraviolet light emitting diodes, and the repairing optical modulation layer 190 and the pixel optical modulation layer 195 may each include a wavelength conversion layer or be formed by a stack of a wavelength conversion layer and a color filter layer.
Fig. 7 is a schematic top view of an led panel according to still another embodiment of the invention. In fig. 7, the led panel 700, similar to the led panel 100 of fig. 1, includes a plurality of display units DU, each of which is divided into a plurality of first regions R1 and a second region R2 surrounded by the first regions R1. The single display unit DU may include a plurality of first light emitting diodes 110 and a plurality of second light emitting diodes 120. Each N of the plurality of first light emitting diodes 110 constitutes one pixel unit PX, and each pixel unit PX is disposed in one of the first regions R1, where N is a positive integer exceeding 1. One of the differences between the present embodiment and the led panel 100 is that a plurality of second leds 120 are disposed in the second region R2. Fig. 7 illustrates that 3 second light emitting diodes 120 are disposed in a single second region R2, but the invention is not limited thereto. In addition, the single display unit DU may further include a plurality of control signal lines 130, a plurality of common signal lines 140 and a plurality of repair lines 150, wherein the first light emitting diode 110, the second light emitting diode 120, the control signal lines 130, the common signal lines 140 and the repair lines 150 may be configured in a manner similar to that described in fig. 1, and are not further described herein.
In the led panel 700, three second leds 120 in the second region R2 are used to replace the failed or unswitched first leds 110, so as to achieve the repairing function. Therefore, among the plurality of second light emitting diodes 120 disposed in the single second region R2, different second light emitting diodes 120 may be electrically connected to different strips of the control signal lines 130, and the control signal lines 130 extend toward the failed or unsmooth shifted first light emitting diodes 110, for example. In fig. 7, each of the second light emitting diodes 120 is correspondingly connected to one of the repair lines 150, and the repair lines 150 are used for electrically connecting the second light emitting diodes 120 to the corresponding control signal lines 130. However, in some embodiments, only a portion of the plurality of second light emitting diodes 120 in the single second region R2 may provide the repairing function, and the second light emitting diodes 120 not providing the repairing function may be left unused without being connected to any repairing line.
Since the second region R2 is surrounded by the plurality of first regions R1, the second light emitting diodes 120 in the second region R2 can be used to repair any first light emitting diodes 110 in the surrounding first region R1. For example, in fig. 7, three second light emitting diodes 120 in the second region R2 are respectively used to repair the first light emitting diodes 110 in three different first regions R1. For convenience of description, the three second light emitting diodes 120 are respectively numbered as a second light emitting diode 120A, a second light emitting diode 120B and a second light emitting diode 120C, and the plurality of repair lines 150 in the display unit DU are respectively numbered as a repair line 150A, a repair line 150B and a repair line 150C, which are respectively connected to the second light emitting diodes 120A, 120B and 120C. The second light emitting diode 120A may be connected to the failed or unsuccessfully transferred first light emitting diode 110XA in the first region R1 at the upper left corner through the repair line 150A. The second light emitting diode 120B may be connected to the first light emitting diode 110XB, which is in the first region R1 at the upper right corner and is failed or not successfully transferred, through the repair line 150B. The second led 120C can be connected to the first led 110XC in the first region R1 at the lower right corner, which is failed or not transferred successfully, through the repair line 150C. However, such a layout of the repair lines 150 is merely for illustration, and in other embodiments, the extension path of each repair line 150 may be determined according to the position of the failed or unsuccessfully transferred led light emitting diode.
The first light emitting diodes 110 are each configured to present a specified color, such as red, green, or blue. Therefore, in addition to electrically connecting the second led 120 to the signal control line 130 of the corresponding failed or unsuccessfully diverted first led 110, it is necessary to make the light emitted by the second led 120 to exhibit the color of the light corresponding to the failed or unsuccessfully diverted first led 110XA, 110XB or 110XC, so as to achieve the repairing effect. For example, if the first led 110XA in the first region R1 at the upper left corner is used to display blue, the corresponding second led 120A needs to be designed to display blue light. Similarly, if the failed or unsuccessfully diverted first led 110XA in the first region R1 at the upper left corner is used to represent red or green, the corresponding second led 120A needs to be designed to represent red or green light. Similarly, the second light emitting diodes 120B and 120C also need to have a corresponding design corresponding to the color that the first light emitting diodes 110XB and 110XC are intended to represent.
Fig. 8 is a schematic side view of a second region of an led panel according to an embodiment of the invention. Fig. 8 can be used to illustrate an embodiment in which the plurality of second light emitting diodes 120 in the second region R2 in fig. 7 can exhibit a desired color, but is not limited thereto. In the second region R2 shown in fig. 8, in addition to the second light emitting diode 120, the first substrate 160, the second substrate 170, the barrier rib 180, and the repair light modulation layer 190 are also shown, wherein the configuration relationship among the second light emitting diode 120, the first substrate 160, the second substrate 170, the barrier rib 180, and the repair light modulation layer 190 can refer to the related description of fig. 4, and is not repeated. In addition, the repairing optical modulation layer 190 may be replaced with the repairing optical modulation layer 190' of fig. 5 to have a multi-layer structure.
Specifically, the color of the light emitted by the second led 120A is the same as that of the first led 110XA (as shown in fig. 7) to be repaired, so that the second led 120A does not need to be matched with the repair light modulation layer 190. The color of the light emitted by the second light emitting diodes 120B and 120C is different from that of the first light emitting diodes 110XB and 110XC (as shown in fig. 7) to be repaired, so that the second light emitting diodes 120B and 120C are respectively stacked with the repair light modulation layers 190A and 190B.
In some embodiments, the first light emitting diodes 110XB and 110XC to be repaired by the second light emitting diodes 120B and 120C are respectively used to present different colors, so the repairing optical modulation layer 190A matching the second light emitting diode 120B can be different from the repairing optical modulation layer 190B matching the second light emitting diode 120C. However, when the first leds 110 to be repaired by the second leds 120B and 120C are used to display the same color, the light modulation repairing layer 190A associated with the second led 120B may be the same as the light modulation repairing layer 190B associated with the second led 120C. In addition, although the side view of the first region R1 is not shown in the present embodiment, the side view of the first region R1 may be the same as the structure shown in fig. 3 or fig. 6. When the side view of the first region R1 is the same as the structure shown in fig. 6, at least some of the first light emitting diodes may be stacked with a pixel light modulation layer, so that each of the first light emitting diodes can be used to display a predetermined color after being matched with the pixel light modulation layer, and the pixel light modulation layer and the repairing light modulation layer may be manufactured in the same or different manufacturing manners, and the detailed means thereof can be as described with reference to fig. 6.
Fig. 9 is a schematic top view of a light emitting diode panel according to still another embodiment of the invention. In fig. 9, the led panel 900 is substantially similar to the led panel 100 of fig. 1. Specifically, the led panel 900 may have a plurality of display units DU, and includes a plurality of first leds 110, a plurality of second leds 120 and corresponding signal lines (not labeled). Each of the display units DU may be divided into a plurality of first regions R1 and a second region R2 surrounded by a plurality of first regions R1 according to the arrangement of the first light emitting diodes 110 and the second light emitting diodes 120. Specifically, in the top view, the arrangement of the first light emitting diode 110, the second light emitting diode 120, the first region R1, the second region R2 and the display unit DU can be referred to the related description of fig. 1.
In the present embodiment, the first light emitting diodes 110 and the second light emitting diodes 120 can be transferred to a substrate (not shown) of the led panel 900 by batch transfer. In fig. 9, a plurality of transfer areas ST are marked on the led panel 900, each transfer area ST may correspond to the size of a transfer fixture, and each transfer area ST may be understood as that all the leds in the area are transferred onto the substrate of the led panel 900 in the same transfer step.
In this embodiment, a single transfer region ST may include a plurality of display units DU, and the number of the second light emitting diodes 120 in different display units DU is different. For example, in a partial area of the single transfer region ST enlarged in fig. 9, the display cells DUA, DUB, and DUC are sequentially arranged from the center to the periphery of the transfer region ST. Here, one second light emitting diode 120 is disposed in the display unit DUA, two second light emitting diodes 120 are disposed in the display unit DUB, and four second light emitting diodes 120 are disposed in the display unit DUC. In this way, a larger number of second light emitting diodes 120 for repairing may be provided in the display unit DUC around the transition region ST, but the invention is not limited thereto. In other embodiments, more second leds may be disposed corresponding to an area in the transfer region ST where there is a relatively high probability of failure or unsmooth transfer of leds, without limiting the arrangement of more second leds around the transfer region ST. In addition, the led panel 900 of fig. 9 having a plurality of transfer regions ST is for illustrative purposes only, and in other embodiments, the led panel may have a smaller display area and include only a single transfer region. Specifically, the number of the transfer regions in the led panel varies with the display area of the led panel, and is not limited to multiple or single transfer regions.
Fig. 10 is a schematic top view of a portion of an led panel according to another embodiment of the invention. Fig. 10 is a schematic top view of four display units DU in the led panel 1000, and fig. 10 omits the control signal lines and the common signal lines, but these omitted components can be described with reference to fig. 1. Specifically, each display unit DU includes a plurality of first light emitting diodes 110, a plurality of second light emitting diodes 120, and a plurality of repair lines 150, wherein the arrangement relationship between the first light emitting diodes 110 and the second light emitting diodes 120 can be described with reference to fig. 7. The repair line 150 of fig. 10 is only schematically illustrated as being connected between each second light emitting diode 120 and the corresponding repaired first light emitting diode 110, but the specific connection manner of the repair line 150 can be referred to the foregoing fig. 7. As can be seen from fig. 10, the relative positions of the second light emitting diodes 120 and the corresponding repaired first light emitting diodes 110 in different display units DU are different. In addition, in the display unit DU located at the lower right corner in fig. 10, one of the second light emitting diodes 120 is idle without being used to repair any of the first light emitting diodes 110.
Fig. 11 is a partial top view of an led panel according to still another embodiment of the invention. Fig. 11 shows an arrangement configuration of the plurality of first regions R1 and the plurality of second regions R2 in the light emitting diode panel 1100. In the present embodiment, a plurality of first light emitting diodes 110 are disposed in each first region R1, and one second light emitting diode is disposed in each second region R2, but in other embodiments, a plurality of second light emitting diodes 120 may be disposed in each second region R2. In addition, the first regions R1 and the second regions R2 in the led panel 1100 are arranged in an array, for example, and the number of rows of the first regions R1 and the second regions R2 is the same, but the number of columns of the second regions R2 is less than that of the first regions R1. In addition, the second region R2 may not be provided between the first regions R1 of two of the columns. As such, each of the first regions R1 may share one second region R2 with the adjacent first region R1 on the right side and may share one second region R2 with the adjacent first region R1 on the left side. When a plurality of first regions R1 surrounding a single second region R2 is defined as one display unit DU, the display unit DU1 and the display unit DU2 may include the same first region R1.
Fig. 12 is a partial top view of a light emitting diode panel according to yet another embodiment of the invention. Fig. 12 shows an arrangement configuration of the plurality of first regions R1 and the plurality of second regions R2 in the led panel 1200, wherein the second regions R2 of the led panel 1200 have a higher density than the led panel 1100. Specifically, the first regions R1 and the second regions R2 in the led panel 1200 are arranged in an array, for example, and the number of rows and the number of columns of the first regions R1 and the second regions R2 are the same. Thus, two adjacent first regions R1 in the row direction may share one second region R2 and two adjacent first regions R1 in the column direction may also share one second region R2. In the embodiment of fig. 11 and 12, only one second led 120 is disposed in each second region R2, but the invention is not limited thereto. In other embodiments, each of the second regions R2 may be provided with a plurality of second light emitting diodes, and different second regions R2 may be provided with different numbers of second light emitting diodes.
Fig. 13 is a partial side view of an led panel according to an embodiment of the invention, wherein fig. 13 is a schematic diagram illustrating an exemplary embodiment of the led panel in which a second led is connected to a failed or unsmooth transferred first led through a corresponding repair line, and therefore, for convenience of description, fig. 13 omits some components of the led panel. The design of the repair line presented in fig. 13 can be applied to the implementation of the repair line of any of the above embodiments. Specifically, in fig. 13, the led panel 1300 includes a first led 110X, a second led 120, a control signal line 130, a common signal line 140, a repair line 150I, a first substrate 160, and a second substrate 170. For example, the first light emitting diode 110X is a failed or unsmooth led, so the second light emitting diode 120 is connected to the control signal line 130 corresponding to the first light emitting diode 110X by the repair line 150I in the present embodiment, so that the first light emitting diode 110X is replaced by the second light emitting diode 120.
The first substrate 160 and the second substrate 170 are vertically assembled. The first light emitting diode 110X, the second light emitting diode 120, the control signal line 130, and the common signal line 140 are disposed on the first substrate 160. The repair line 150I is disposed on the second substrate 170. In addition, the led panel 1300 further includes two connecting components C150, the connecting components C150 are disposed between the first substrate 160 and the second substrate 170, one of the connecting components C150 is connected between the repair line 150I and the second led 120, and the other connecting component C150 is connected between one control signal line 130 corresponding to the first led 110X and the repair line 150I. That is, the repair line of the present invention may be disposed on the first substrate 170 on which the light emitting diode is disposed as shown in fig. 3, or may be disposed on the second substrate 170 without the light emitting diode as shown in fig. 13. In fig. 13, the control signal line 130 continuously extends to be connected to the first light emitting diode 110X, but in other embodiments, the control signal line 130 may be disconnected between the connection point with the connection member C150 and the first light emitting diode 110X.
Fig. 14 is a schematic circuit layout diagram of a single display unit of an led panel according to an embodiment of the invention. In fig. 14, the display unit DU includes a plurality of first light emitting diodes 110, a second light emitting diode 120, a plurality of control signal lines 130, a plurality of common signal lines 140, and a repair line 150 II. The configuration relationship among the first light emitting diode 110, the second light emitting diode 120, the control signal line 130 and the common signal line 140 can refer to the foregoing embodiments, and is not repeated herein. Here, the repair line 150II may be used to connect the second light emitting diode 120 to the control signal line 130 connected to one of the first light emitting diodes 110, and the repair line 150II includes a first line segment 152, a second line segment 154 and a connection structure 156. One of the first and second segments 152 and 154 is connected to one of the control signal lines 130, the other of the first and second segments 152 and 154 is connected to the second light emitting diode 120, and the connection structure 156 connects the first and second segments 152 and 154. Specifically, the present embodiment is described by taking the first line segment 152 connected to the control signal line 130 and the second line segment 154 connected to the second light emitting diode 120 as an example.
The first line segment 152 and the second line segment 154 may be lines pre-fabricated on the substrate of the led panel. In some embodiments, the first line segment 152, the second line segment 154 and the control signal line 130 may be fabricated with the same film layer, but not limited thereto. In addition, the number of the first segments 152 may be the same as the number of the first light emitting diodes 110, and each of the first segments 152 is not directly connected to the second segment 154. After detecting that the failed or unsuccessfully transferred first led 110 exists in the display unit DU, the connection structure 156 may be further formed to connect the first line segment 152 corresponding to the failed or unsuccessfully transferred first led 110 to the second line segment 154 for repairing. At this time, the other first line segments 152 are still not connected to the second line segments 154. In addition, the control signal line 130 may be disconnected between the connection point CP with the repair line 150II and the corresponding first light emitting diode 110, similar to fig. 2. The structure of the repair line 150II of the present embodiment can be applied to any one of the led panels 100 to 1200 as one possible implementation of the repair line 150.
Fig. 15 is a schematic circuit layout diagram of a single display unit of an led panel according to another embodiment of the present invention. In fig. 15, the display unit DU includes a plurality of first light emitting diodes 110, a second light emitting diode 120, a plurality of control signal lines 130, a plurality of common signal lines 140, and a repair line 150 III. The configuration relationship among the first light emitting diode 110, the second light emitting diode 120, the control signal line 130 and the common signal line 140 can refer to the foregoing embodiments, and is not repeated herein. Here, the repair line 150III may be another implementation of the repair line 150 in the foregoing embodiment. Specifically, the repair line 150III, similar to the repair line 150I, includes a first line segment 152', a second line segment 154', and a connection structure 156 '. The repair line 150III is different from the repair line 150II mainly in that the first line segment 152' and the second line segment 154' are interlaced with each other but are not directly connected, and the connection structure 156 ' is disposed at the intersection CR connected to the first line segment 152' and the second line segment 154 '.
Fig. 16 is a schematic cross-sectional view of the repair line 150III in an embodiment. The repair line 150III may be formed of the first conductive layer L1, the second conductive layer L2, and the fuse structure W. Specifically, the first segment 152 'of the repair line 150III in fig. 15 can be formed by one of the first conductive layer L1 and the second conductive layer L2, and the second segment 154' is formed by the other one of the first conductive layer L1 and the second conductive layer L2. That is, the first line segment 152 'is located in a different layer than the second line segment 154'. The fused structure W then constitutes the connecting structure 156' in fig. 15. As can be seen from fig. 16, the first conductive layer L1 and the second conductive layer L2 are different layers, and the fused structure W is a conductor member connected between the different layers. Thus, the first line segments 152 'and the second line segments 154' are not directly connected, although they are interleaved.
Fig. 17 is a schematic circuit layout diagram of a single display unit of an led panel according to yet another embodiment of the present invention. In fig. 17, the display unit DU includes a plurality of first light emitting diodes 110, a second light emitting diode 120, a plurality of control signal lines 130, a plurality of common signal lines 140, and a repair line 150 IV. The configuration relationship among the first light emitting diode 110, the second light emitting diode 120, the control signal line 130 and the common signal line 140 can refer to the foregoing embodiments, and is not repeated herein. Here, the repair line 150IV includes a third line segment 158 in addition to the first line segment 152, the second line segment 154 and the connection structure 156. Specifically, the present embodiment is provided with a plurality of first line segments 152, a plurality of second line segments 154 and a plurality of second light emitting diodes 120, wherein each first line segment 152 is connected to one of the control signal lines 130, and each second line segment 154 is connected to one of the second light emitting diodes 120.
In addition, the repair line 150IV of the present embodiment further includes a third line segment 158. In the display unit DU, there are a plurality of third segments 158, and each third segment 158 crosses the first segment 152 and the second segment 154. Specifically, the number of the third segments 158 may be the same as the number of the second light emitting diodes 120. The connection structure 156 is used to electrically connect the control signal line 130 corresponding to the first led 110 to be repaired with one of the second leds 120. Here, the connection structure 156 includes a connection structure 156A connecting one of the first line segments 152 to the corresponding third line segment 158 and a connection structure 156B connecting one of the second line segments 154 to the corresponding third line segment 158. The arrangement positions of the connection structures 156A and 156B in fig. 17 are for illustration purposes only, and in other embodiments, the arrangement positions of the connection structures 156A and 156B may be determined according to the arrangement positions of the first light emitting diode 110 to be repaired and the second light emitting diode 120 providing the repairing function.
In the embodiment, the third line segment 158 may not directly connect the first line segments 152 or the second line segments 154 and the first line segments 152 are not connected to each other, but the invention is not limited thereto. In other embodiments, the third wire segment 158 can be directly connected to the first wire segment 152 or the second wire segment 154, and after the connecting structure 156 is fabricated, a wire breaking step, such as laser cutting, can be further performed to break the first wire segment 152 or the second wire segment 154 that is not required to be connected to the third wire segment 158, so as to establish the required electrical connection path. In other possible embodiments, the first line segment 152, the second line segment 154 and the third line segment 158 can be directly connected to each other, and after detecting a failed or unsuccessfully transferred led, a repair line cutting step can be performed to cut off the first line segment 152, the second line segment 154 and the third line segment 158 that are not required to be connected together.
In summary, in the led panel according to the embodiment of the invention, the display unit is divided into a plurality of first regions and a second region surrounded by the plurality of first regions. Each first region is provided with a plurality of first light-emitting diodes, the second region is provided with one or more second light-emitting diodes, and the second light-emitting diodes positioned in the second region are used for providing a repairing function. The second light emitting diode can be matched with the repair light modulation layer to present the color which is preset to be presented by the first light emitting diode to be repaired. In addition, the second light emitting diode can be used for repairing the first light emitting diode of any one of the plurality of first areas around the second light emitting diode. Therefore, the repair structure of the light emitting diode panel of the embodiment of the invention can achieve high repair efficiency, and the yield of the light emitting diode panel is improved.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
