阅读说明：本技术 彩膜基板、显示面板及其制作方法 (Color film substrate, display panel and manufacturing method thereof ) 是由 王涛 王程功 李静静 姜博 顾杨 杨婷慧 于 2020-05-29 设计创作，主要内容包括：本发明涉及一种彩膜基板、显示面板及其制作方法,彩膜基板可与显示组件盖合形成显示面板,且包括盖板和设于盖板上的阻挡单元,阻挡单元包括阻挡墙及设于阻挡墙和盖板之间的限定部,限定部的光密度大于阻挡墙的光密度；并且,在平行盖板的方向上,阻挡墙具有彼此相对的第一侧壁和第二侧壁；沿盖板指向阻挡墙的方向,第一侧壁和第二侧壁之间的距离逐渐增大。这样,使阻挡墙的宽度在驱动基板指向盖板的方向趋于变小,从而使阻挡墙的第一侧壁和/或第二侧壁的自下而上向远离显示器件的方向倾斜设置,显示器件发出的侧向光通过第一侧壁或第二侧壁时发生反射,并可转换为倾斜或竖直的光线后从盖板均匀出射,从而提高显示器件发出光线的利用效率。(The invention relates to a color film substrate, a display panel and a manufacturing method thereof, wherein the color film substrate can be covered with a display assembly to form the display panel and comprises a cover plate and a blocking unit arranged on the cover plate, the blocking unit comprises a blocking wall and a limiting part arranged between the blocking wall and the cover plate, and the optical density of the limiting part is greater than that of the blocking wall; and, in the direction parallel to the cover plate, the blocking wall has a first sidewall and a second sidewall opposite to each other; the distance between the first side wall and the second side wall is gradually increased along the direction of the cover plate pointing to the blocking wall. Therefore, the width of the barrier wall tends to be reduced in the direction of the driving substrate pointing to the cover plate, so that the first side wall and/or the second side wall of the barrier wall are obliquely arranged from bottom to top in the direction away from the display device, lateral light emitted by the display device is reflected when passing through the first side wall or the second side wall and can be uniformly emitted from the cover plate after being converted into oblique or vertical light, and the utilization efficiency of the light emitted by the display device is improved.)

1. The color film substrate is characterized by comprising a cover plate and a blocking unit arranged on the cover plate, wherein the blocking unit comprises a blocking wall and a limiting part arranged between the blocking wall and the cover plate, and the optical density of the limiting part is greater than that of the blocking wall;

and, in a direction parallel to the cover plate, the blocking wall has a first sidewall and a second sidewall opposite to each other; the distance between the first side wall and the second side wall is gradually increased along the direction of the cover plate pointing to the blocking wall.

2. The color film substrate according to claim 1, wherein an included angle between the first sidewall and the cover plate is in a range of 30 degrees to 85 degrees; and/or

The included angle between the second side wall and the cover plate ranges from 30 degrees to 85 degrees; and/or

The optical density value of the defined portion is greater than 3.

3. The color filter substrate according to claim 1, wherein the plurality of blocking units are included, the color filter substrate further comprises a color conversion layer disposed on the cover plate, the color conversion layer comprises a plurality of color conversion units, at least some of the color conversion units are filled between adjacent blocking units, and the color conversion units are configured to convert incident light into target light.

4. The color filter substrate according to claim 3, wherein the thickness of the blocking unit is greater than that of the color conversion unit along a direction in which the cover plate points to the color conversion layer.

5. The color filter substrate according to claim 1, wherein the barrier wall is made of a reflective material; or

The first side wall and/or the second side wall are coated with a reflective material.

6. A display panel, comprising a display module and the color film substrate according to any one of claims 1 to 5;

the display assembly comprises a driving substrate and a plurality of display devices arranged on the driving substrate;

the color film substrate and the display assembly are covered, and at least part of the barrier wall extends into the space between two adjacent display devices.

7. The display panel of claim 6, wherein the display assembly further comprises a shielding layer for blocking light from entering the driving substrate, the shielding layer comprises a shielding portion formed on the driving substrate, and the shielding portion extends between two adjacent display devices;

preferably, the shielding portion is a reflecting portion or a light absorbing portion.

8. The display panel according to claim 7, wherein a height of a top surface of the display device away from the driving substrate in a direction in which the driving substrate points to the color filter substrate is greater than or equal to a height of a top surface of the reflective layer away from the driving substrate.

9. The display panel according to claim 6, further comprising an encapsulation layer surrounding and covering a side of the color filter substrate facing the display assembly.

10. A manufacturing method of a display panel is characterized by comprising the following steps:

arraying a plurality of display devices on a driving substrate;

sequentially laminating a limiting part and a barrier wall on the cover plate, wherein the optical density of the limiting part is greater than that of the barrier wall; and, in a direction parallel to the cover plate, the blocking wall has a first sidewall and a second sidewall opposite to each other; the distance between the first side wall and the second side wall is gradually increased along the direction of the cover plate pointing to the blocking wall;

the cover plate and the driving substrate are buckled, so that the barrier wall extends into a space between any two adjacent display devices;

preferably, the method further comprises the following steps after the plurality of display devices are arrayed on the driving substrate:

a shielding portion is formed on the driving substrate between any two adjacent display devices.

Technical Field

The invention relates to the technical field of display, in particular to a color film substrate, a display panel and a manufacturing method thereof.

Background

Micro LEDs are also called Micro light emitting diodes, and refer to high-density integrated LED arrays, the distance between LED pixel points in the arrays is 10 microns, and each LED pixel can self-emit light. The technology miniaturizes the traditional inorganic LED array, and each LED pixel point with the size of 10 micrometers can be independently positioned and lightened.

That is, the size of the original small pitch LED can be further reduced to the order of 10 microns. The Micro LED has a direct display mode, and the LED chips with the size of 10 microns are connected to the driving substrate, so that the light emitting brightness of each chip is accurately controlled, and image display is realized. However, since the light emission angle of the LED is large, crosstalk of light between adjacent pixels is easily caused.

Disclosure of Invention

Accordingly, there is a need for a color filter substrate, a display panel and a method for manufacturing the same to avoid optical crosstalk between pixels in the display panel.

A color film substrate comprises a cover plate and a blocking unit arranged on the cover plate, wherein the blocking unit comprises a blocking wall and a limiting part arranged between the blocking wall and the cover plate, and the optical density of the limiting part is greater than that of the blocking wall;

and, in a direction parallel to the cover plate, the blocking wall has a first sidewall and a second sidewall opposite to each other; the distance between the first side wall and the second side wall is gradually increased along the direction of the cover plate pointing to the blocking wall.

The color film substrate can be covered with the display assembly to form a display panel, the blocking wall can be located between two adjacent display devices in the display assembly, at least part of lateral light emitted by the display devices is blocked by the blocking wall, the lateral light is prevented from being emitted to the adjacent display devices, and light crosstalk between the adjacent display devices is reduced. And the distance between the first side wall and the second side wall is gradually increased along the direction of the cover plate pointing to the blocking wall. Therefore, the width of the barrier wall tends to be reduced from bottom to top (the direction of the driving substrate pointing to the cover plate), so that the first side wall and/or the second side wall of the barrier wall are obliquely arranged from bottom to top in the direction away from the display device, lateral light emitted by the display device is reflected when passing through the first side wall or the second side wall and can be uniformly emitted from the cover plate after being converted into oblique or vertical light, and the utilization efficiency of the light emitted by the display device is improved.

In one embodiment, the included angle between the first side wall and the cover plate ranges from 30 degrees to 85 degrees; and/or

The included angle between the second side wall and the cover plate ranges from 30 degrees to 85 degrees; and/or

The optical density value of the defined portion is greater than 3.

In one embodiment, the blocking units include a plurality of blocking units, the color film substrate further includes a color conversion layer disposed on the cover plate, the color conversion layer includes a plurality of color conversion units, the color conversion units are filled between at least some adjacent blocking units, and the color conversion units are used for converting incident light into target light;

in one embodiment, the thickness of the blocking unit is larger than that of the color conversion unit along the direction in which the cover plate points to the color conversion layer.

In one embodiment, the barrier walls are made of a reflective material; or

The first side wall and/or the second side wall are coated with a reflective material.

A display panel comprises a display assembly and the color film substrate;

the display assembly comprises a driving substrate and a plurality of display devices arranged on the driving substrate;

the color film substrate and the display assembly are covered, and at least part of the barrier wall extends into the space between two adjacent display devices.

In one embodiment, the display module further comprises a shielding layer for blocking light from entering the driving substrate, wherein the shielding layer comprises a shielding part formed on the driving substrate, and the shielding part extends between two adjacent display devices;

optionally, the blocking portion is a reflecting portion or a light absorbing portion.

In one embodiment, along a direction in which the driving substrate points to the color filter substrate, a height of a top surface of the display device away from the driving substrate is greater than or equal to a height of a top surface of the reflection layer away from the driving substrate.

In one embodiment, the display module further comprises an encapsulation layer, and the encapsulation layer surrounds and covers one side, facing the display module, of the cover plate layer color film substrate.

A manufacturing method of a display panel comprises the following steps:

arraying a plurality of display devices on a driving substrate;

sequentially laminating a limiting part and a barrier wall on the cover plate, wherein the optical density of the limiting part is greater than that of the barrier wall; and, in a direction parallel to the cover plate, the blocking wall has a first sidewall and a second sidewall opposite to each other; the distance between the first side wall and the second side wall is gradually increased along the direction of the cover plate pointing to the blocking wall;

the cover plate and the driving substrate are buckled, so that the barrier wall extends into a space between any two adjacent display devices;

optionally, the method further includes the following steps after the plurality of display devices are arrayed on the driving substrate:

a shielding portion is formed on the driving substrate between any two adjacent display devices.

Drawings

FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a display panel according to yet another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a display panel according to another embodiment of the invention.

100. A display panel; 10. a drive substrate; 20. a display component; 30. a display device; 40. a color film substrate; 42. a packaging layer; 50. a color conversion layer; 52. a color conversion unit; 54. a light filter portion; 60. a barrier wall; 62. a blocking unit; 61. a first side wall; 72. a light exit channel; 63. a second side wall; 70. a cover plate; 80. a limiting part; 82. a light outlet; 90. a shielding portion.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As described in the background art, in the display panel provided with the micro light emitting diodes, since a part of light emitted by the micro light emitting diodes is transmitted laterally (i.e. in any direction parallel to the display panel), lateral light is formed, and when the lateral light is transmitted to the adjacent micro light emitting diodes, the light emitting effect of the micro light emitting diodes is affected, i.e. optical crosstalk exists. The display panel has a poor display effect due to optical crosstalk from the micro light emitting diodes to the surrounding micro light emitting diodes.

In view of the above problems, embodiments of the present invention provide a display panel, in which a blocking wall is disposed between two adjacent micro light emitting diodes, and the blocking wall can be used to block lateral light of the micro light emitting diodes from being transmitted to the surrounding micro light emitting diodes, so that optical crosstalk between the micro light emitting diodes can be reduced, and the display effect of the display panel can be improved. The following explains the display panel, the display device and the method for manufacturing the display panel according to the embodiment of the present invention with reference to fig. 1 to 4.

Fig. 1 is a schematic structural diagram of a display panel 100 according to an embodiment of the present invention. Referring to fig. 1, the display panel 100 includes a display module 20 and a color film substrate 40, the display module 20 includes a driving substrate 10 and a display unit (not shown) disposed on the driving substrate 10, the color film substrate 40 includes a cover plate 70 and a color conversion layer 50 disposed on the cover plate 70, the display unit is disposed between the driving substrate 10 and the color conversion layer 50, light emitted by the display unit is emitted to the outside after passing through the color conversion layer 50, and light emitted by the display unit can be converted into light of different colors by conversion of the color conversion layer 50, so that light of three colors of red, green and blue can be obtained by conversion, thereby realizing image display.

Further, the display unit includes a plurality of display devices 30, the plurality of display devices 30 are disposed on the driving substrate 10, and a control circuit is formed in the driving substrate 10 for controlling the plurality of display devices 30 to emit light; the color conversion layer 50 is located on a side of the display device 30 opposite to the driving substrate 10, and is used for converting colors of light emitted by the display device 30, and light of three colors of red, green and blue can be obtained through conversion. Specifically in the present embodiment, the display device 30 is a Micro light emitting diode (Micro LED), which as used herein means a Micro LED that may have a size of 1 micron to 100 microns. In some embodiments, the micro light emitting diodes may have a maximum width of 20 microns, 10 microns, or 5 microns. In some embodiments, the micro light emitting diodes may have a maximum height of less than 20 microns, 10 microns, or 5 microns. It should be understood, however, that embodiments of the present invention are not necessarily limited thereto, as some embodiments may be applicable to larger and perhaps smaller dimensions.

Further, the color conversion layer 50 includes a plurality of color conversion units 52, and the color conversion units 52 are used for converting incident light into target light. Specifically, each color conversion unit 52 faces one display device 30, and light emitted from the display device 30 can be converted into a target color by the corresponding color conversion layer 50. For example, the display device 30 is a micro light emitting diode emitting blue light, the blue light emitted by one part of the display devices 30 in the plurality of display devices 30 is converted into red light by a red light conversion unit, the red light conversion unit is filled with a red light conversion material (quantum dot material), the blue light emitted by the other part of the display devices 30 is converted into green light by a green light conversion unit, the green light conversion unit is filled with a green light conversion material (quantum dot material), the blue light emitted by the remaining part of the display devices 30 can keep the color unchanged by the blue light conversion unit, the blue light conversion unit is filled with transparent photoresist or transparent glue, and a scattering body is added in the transparent material to realize the same light distribution as red and green.

Optionally, quantum dot material is added in the color conversion layer 50.

In particular, quantum dot materials have the property of converting short wavelength light into long wavelength light. The quantum dot material has an absorption peak wavelength range and a luminescence peak wavelength range, and can convert color light corresponding to the absorption peak wavelength range into color light corresponding to the luminescence peak wavelength range. Conversion of light of different colors can thus be achieved by selecting different quantum dot materials. A quantum dot material may correspond to a range of absorption peak wavelengths.

When the light of the first color and the light of the second color are both monochromatic light, the color conversion layer 50 may include a quantum dot material having an absorption peak wavelength range corresponding to a wavelength range of the light of the first color and a light emission peak wavelength range corresponding to a wavelength range of the light of the second color. Illustratively, when the light of the first color is blue light and the light of the second color is red light, the color conversion layer 50 includes a quantum dot material having an absorption peak wavelength range that is a wavelength range of the blue light and an emission peak wavelength range that is a wavelength range of the red light, thereby achieving conversion of the blue light into the red light.

It should be noted that the kind of the quantum dot material included in the color conversion layer 50 is merely an example, and is not limited. In other embodiments, the color conversion layer 50 may include a greater variety of quantum dot materials. Also, the amount of light that the color conversion layer 50 converts the light of the first color into the light of the second color may be adjusted by adjusting the doping ratio of the quantum dot material in the color conversion layer 50.

Illustratively, the quantum dot material may comprise a perovskite quantum dot material or a carbon quantum dot material. The perovskite quantum dot material or the carbon quantum dot material can respectively perform conversion among light of multiple colors, and when the color conversion layer 50 comprises the perovskite quantum dot material or the carbon quantum dot material, the color conversion layer 50 can realize conversion of multiple colors, so that color cast requirements of various colors of the display panel 100 can be better met. For example, the perovskite quantum dot material includes green perovskite quantum dots, which may convert blue light to green light. Thus, a color conversion layer 50 formed of quantum dots of at least one color may enable conversion of light of a first color to light of a second color.

In addition, there are generally two ways of realizing three-color display by the Micro LED, one way is to realize three-color display by combining the LED structure with the color conversion layer 50 having quantum dots or fluorescence as described in the above embodiments; another method adopts a batch transfer technique to transfer three LEDs emitting red, green and blue light to a driving substrate, and three-color display can be realized without providing a color conversion layer 50, so it can be understood that in other embodiments, the color conversion layer 50 may be omitted.

Referring to fig. 1 again, the color filter substrate 20 further includes a blocking unit 62 disposed on the cover plate 70, when the color filter substrate 20 and the display module 40 are covered, the blocking unit 62 is located on one side of the driving substrate 10 where the display devices 30 are disposed, a first orthographic projection of the blocking unit 62 facing the driving substrate 10 is located between two second orthographic projections of two adjacent display devices 30 facing the driving substrate 10, that is, the blocking unit 62 is located between two adjacent display devices 30, and at least a portion of lateral light emitted by the display devices 30 is blocked by the blocking unit 62, so as to prevent the lateral light from being emitted to the adjacent display devices 30, and reduce optical crosstalk between the adjacent display devices 30.

Specifically, the blocking unit 62 includes a blocking wall 60, when the color filter substrate 40 and the display assembly 20 are covered, the blocking wall 60 at least partially extends between two adjacent display devices 30, and at least a portion of lateral light emitted by the display devices 30 is blocked by the blocking unit 62, so as to prevent the lateral light from being emitted to the adjacent display devices 30, and reduce optical crosstalk between the adjacent display devices 30.

Wherein the blocking wall 60 has a first side wall 61 and a second side wall 63 opposite to each other in a direction parallel to the cover plate 70; and, the distance between the first and second sidewalls 61 and 63 is gradually increased in a direction in which the cover plate 70 is directed to the blocking wall 60. Thus, the width of the barrier wall 60 tends to decrease from bottom to top (the direction of the driving substrate 10 pointing to the cover plate 70) (i.e., the sectional area of the barrier wall 60 is in an inverted trapezoid shape in the direction of the cover plate 70 pointing to the barrier unit 62), so that the first sidewall 61 and/or the second sidewall 63 of the barrier wall 60 are disposed to be inclined from bottom to top in the direction away from the display device 30, and the side light emitted from the display device 30 is reflected when passing through the first sidewall 61 or the second sidewall 63 and is uniformly emitted from the cover plate 40 after being converted into the inclined or vertical light, thereby improving the utilization efficiency of the light emitted from the display device 30.

Optionally, the included angle between the first sidewall 61 and the cover plate 70 is in a range of 30 degrees to 85 degrees, and/or the included angle between the second sidewall 63 and the cover plate 70 is in a range of 30 degrees to 85 degrees, so that the light utilization rate can be preferably improved.

In addition, the blocking wall 60 is made of a reflective material, for example, an organic material having a reflective function or a metal material having a reflective function, and can reflect the lateral light emitted from the display device 30 through the blocking wall 60, thereby improving the light utilization rate. Alternatively, the first sidewall 61 and/or the second sidewall 63 may be coated with a reflective material, which may also be used to reflect the side light emitted from the display device 30, thereby improving the light utilization.

In some embodiments, the blocking unit 62 further includes a limiting portion 80 disposed between the blocking wall 60 and the cover plate 70, the optical density of the limiting portion 80 is greater than that of the blocking wall 60, when the light emitted from one display device 30 is transmitted to the corresponding limiting portion 80, because the light density of the limiting portion 80 is high, the light cannot be emitted to the light emitting path of another adjacent display device 30 through the limiting portion 80, and the color mixture of the adjacent light is prevented, so as to improve the display effect of the display panel.

Alternatively, the optical density value of the defining portion 80 is greater than 3, and may be made of a black organic material with high optical density, having a good light-shielding capability; the thickness of the limiting portion 80 is less than 3 um.

Specifically, in this embodiment, the blocking units 62 include a plurality of blocking units 62, a light emitting channel 72 is formed between any two adjacent blocking walls 60 in the plurality of blocking units 62, one end of the display device 30, which is away from the driving substrate 10, extends into the light emitting channel 72, light emitted by the display device 30 is emitted to the outside through the light emitting channel 72, and the light emitting channel 72 limits a propagation path of the light emitted by the display device 30, so as to prevent optical crosstalk between adjacent display devices 30. Moreover, one end of the display device 30, which is away from the driving substrate 10, extends into the light-emitting channel 72, light emitted by the display device 30 can be directly transmitted in the light-emitting channel 72, and the light-emitting channel 72 can effectively guide the light to be transmitted, so that the situation that one end of the display device 30, which is away from the driving substrate 10, is located outside the light-emitting channel 72 is avoided, and light crosstalk is prevented from being generated because part of the light cannot enter the light-emitting channel 72. In addition, one end of the display device 30 extends into the light-emitting channel 72, so that the thickness of the whole display panel 100 can be reduced.

In addition, a light outlet 82 is formed between two adjacent limiting portions 80 in the plurality of blocking units 62, and the orthographic projection of the light outlet 82 towards the driving substrate 10 at least partially overlaps with the orthographic projection of the light outlet channel 72 towards the driving substrate 10. The light emitted by the display device 30 passes through the light-emitting channel 72 and then exits from the light-emitting port 82, and the light-emitting port 82 is surrounded by the limiting portion 80 with low light transmittance, so that the light cannot be transmitted to the light-emitting path of the adjacent display device 30 when finally exiting, and the adjacent light is prevented from being mixed.

Further, a plurality of color conversion cells 52 respectively corresponding to the display devices 30 are disposed on the cover plate 40, and a blocking unit 62 is filled between at least some of the adjacent color conversion cells 52. In addition, along the direction in which the color film substrate 40 points to the display module 20, the thickness of the blocking unit 62 is greater than that of the color conversion unit 52, so that a light exit channel 72 is formed between the color conversion unit 52 and two adjacent blocking walls 60, which is equivalent to the light exit channel 72 formed in the color film substrate 40, when the color film substrate 40 and the display module 20 are fastened, the display device 30 is aligned and assembled in the light exit channel 72, one side of the display device 30, which is away from the driving substrate 10, faces the color conversion unit 52, so that light color conversion can be realized, the side surface of the display device 20 is the blocking wall 60, and lateral light emitted by the display device 30 can be reflected, thereby avoiding light crosstalk.

Exemplarily, fig. 2 is a schematic structural diagram of another display panel 100 according to an embodiment of the present invention. Referring to fig. 2, the display panel 100 is different from the above embodiment in that the display module 20 further includes a shielding layer for blocking light from entering the driving substrate 10, and the shielding layer includes a shielding portion 90 formed on the driving substrate 10, and the shielding portion 90 extends between two adjacent display devices 30 to shield an exposed portion of the driving substrate 10 where no display device 30 is disposed, so as to prevent light emitted from the color conversion layer 50 from being emitted toward the driving substrate 10 and then being emitted out.

Further, along the direction in which the driving substrate 10 points to the color filter substrate 40, the height of the top surface of the display device 30 away from the driving substrate 10 is greater than or equal to the height of the top surface of the shielding portion 90 away from the driving substrate 10, so that the height of the shielding portion 90 relative to the driving substrate 10 is less than or equal to the height of the display device 30 relative to the driving substrate 10, and the shielding portion 90 does not interfere with the light exit path of the display device 30 toward the cover plate 70.

Alternatively, the shielding portion 90 is a reflection portion, and light emitted toward the driving substrate 10 reaches the reflection portion and is reflected, so that the light does not pass through the driving substrate 10 to cause the driving substrate 10 to emit light. The reflecting part may be a metal, such as a light reflecting material of aluminum, silver or other alloys, or may be an organic material with light reflection.

Optionally, the shielding portion 90 is a light absorbing portion, and light emitted toward the driving substrate 10 meets the light absorbing portion and is absorbed by the light absorbing portion, and does not continuously transmit to the driving substrate 10, so as to avoid the driving substrate 10 from emitting light. Meanwhile, the light absorbing part is located between two adjacent display devices 30, and can absorb light rays of various colors emitted towards the driving substrate 10, and prevent the light rays of various colors from being reflected to adjacent light emitting paths after passing through the driving substrate 10, so that the light crosstalk between the display devices 30 can be reduced while the driving substrate 10 is prevented from emitting light through the light absorbing part; wherein, the light absorption part can be made of organic material added with black dye or black carbon.

Exemplarily, fig. 3 is a schematic structural diagram of another display panel 100 according to an embodiment of the present invention. Referring to fig. 3, the display panel 100 is different from the above-mentioned embodiment in that the display panel 100 further includes a filter layer including a plurality of filter portions 54, the filter portion 54 is disposed between each color conversion unit 52 and the cover plate 70, and the filter portion 54 filters interference light and allows only light of a target color to pass therethrough. For example, a red light filter is disposed between the red light converter and the cover plate 70 to filter out light of other colors and only allow red light to pass through; a green filter is disposed between the green converter and the cover plate 70 to filter out light of other colors and allow only green light to pass; set up the blue light filter house between blue light converter and apron 70, filter the light of other colours, only allow the blue light to pass through to further improve the light-emitting effect.

It is understood that the light emission luminance can be adjusted by changing the thickness of the optical filter portion 54. For example, when the filter portion 54 is thick, the light emission luminance is small; when the thickness of the filter part is thin, the luminance is large.

Exemplarily, fig. 4 is a schematic structural diagram of another display panel 100 according to an embodiment of the present invention. Referring to fig. 3, the display panel 100 is different from the foregoing embodiment in that the display panel 100 further includes an encapsulation layer 42, and the encapsulation layer 42 surrounds and covers a side of the color filter substrate 40 facing the display assembly 20 to encapsulate the color filter substrate 40, so as to block moisture and oxygen, prevent performance degradation of a quantum dot material in a color conversion layer, and improve reliability of the display panel 100. The encapsulation layer 42 may be silicon nitride, or silicon oxide, or a stacked structure of these two materials.

Based on the same inventive concept, in an embodiment of the present invention, a color filter substrate 40 according to any of the above embodiments is further provided.

Based on the same inventive concept, in an embodiment of the present invention, a method for manufacturing the display panel 100 is further provided, including the following steps:

step S100 of arraying a plurality of display devices 30 on the driving substrate 10 at intervals; specifically, the display device 30 is formed on the driving substrate 10 through a flip-chip bonding process, and the electrical connection of the display device 30 and the driving circuit in the driving substrate 10 is achieved.

In step S200, the shielding portion 90 between any two adjacent display devices 30 is formed on the driving substrate 10.

Optionally, coating a photoresist outside the display device 30, exposing a portion where the shielding portion 90 needs to be disposed, then performing metal plating to obtain the shielding portion 90, and finally removing the photoresist; or, covering a black light absorbing layer on the side of the driving substrate 10 where the display devices 30 are disposed by a yellow light process, and then removing the black light absorbing layer in the corresponding region of the display devices 30 by a plasma radio frequency (rf) technique, so as to obtain a plurality of shielding portions 90 located between two adjacent display devices 30; or, a black light absorbing material is filled between two adjacent display devices 30 by a dispensing process, so as to obtain the shielding portion 90.

Step S300, sequentially laminating a limiting part and a blocking wall 60 on the cover plate 70; wherein the optical density of the defining portion 80 is greater than that of the barrier wall 60; and, in the direction parallel to the cover plate 70, the blocking wall 60 has a first side wall 61 and a second side wall 63 opposite to each other; the distance between the first and second side walls 61 and 63 is gradually increased in a direction in which the cover plate 70 is directed toward the blocking wall 60.

Further, step S300 further includes molding the color conversion layer 50 on the cover plate 70. Specifically, the limiting portion 80 is first fabricated on the cover plate 40, then a plurality of color conversion units 52, such as a red light converter, a green light converter and a blue light converter, are formed on two sides of the limiting portion 80 along a direction parallel to the cover plate 40, finally the blocking walls 60 stacked on the limiting portion 60 are formed between the adjacent color conversion units 52 through a yellow light process, and the blocking walls 60 are higher than the color conversion units 52 relative to the cover plate 70, so that the light exit channels 72 are formed between the color conversion units 52 and the two adjacent blocking walls 60.

Step S500, the cover plate 70 and the driving substrate 10 are fastened to make the blocking wall 60 extend between two adjacent display devices 30, and the blocking wall 60 blocks the lateral light of the display devices 30 to prevent the optical crosstalk.

And, along the direction that the cover plate 70 points to the barrier wall 60, the distance between the first sidewall 61 and the second sidewall 63 of the barrier wall 60 is gradually increased, so that the width of the barrier wall 60 tends to be reduced from bottom to top (the direction that the driving substrate 10 points to the cover plate 70), thereby the first sidewall 61 and/or the second sidewall 63 of the barrier wall 60 are obliquely arranged from bottom to top in the direction away from the display device 30, and the side light emitted by the display device 30 is reflected when passing through the first sidewall 61 or the second sidewall 63 and is uniformly emitted from the cover plate 40 after being converted into the oblique or vertical light, thereby improving the utilization efficiency of the light emitted by the display device 30.

Meanwhile, the optical density of the limiting portion 80 is greater than that of the blocking wall 60, and when the light emitted from one display device 30 is transmitted to the corresponding limiting portion 80, because the optical density of the limiting portion 80 is high, the light cannot be emitted to the light emitting path of another adjacent display device 30 through the limiting portion 80, thereby preventing the adjacent light from being mixed, and improving the display effect of the display panel.

In addition, when the color film substrate 40 and the display assembly 20 in the above embodiments are fastened, the color film substrate 40 and the display assembly 20 are bonded by using the adhesive layer, and the overall height of the display panel 100 after bonding is controlled by controlling the bonding pressure in the bonding process. Alternatively, silicon balls are formed on the driving substrate 10, and the cover plate 70 is supported by the silicon balls, thereby ensuring the bonding height.

In the above-mentioned method for manufacturing a display panel, the blocking wall 60 is formed on one surface of the cover plate 70 facing the driving substrate 10, and the blocking wall 60 is formed on the cover plate 70. And, a plurality of color conversion units 52 in the color conversion layer 50 are formed at intervals on the side of the cover plate 70 facing the driving substrate 10, each color conversion unit 52 is located between two adjacent barrier walls 60, so that the color conversion layer 50 is also formed on the cover plate 70. When the display panel 100 is manufactured, the color conversion layer 50 and the barrier wall 60 are molded on the cover plate 70 to form the color film substrate 40; a plurality of display devices 30 are arrayed on the driving substrate 10 to form a display assembly 20, and finally the color film substrate 40 and the display assembly 20 are covered, the color display units in the color film substrate 40 are correspondingly positioned on the side of the display devices 30 departing from the driving substrate 10, and the barrier wall 60 is inserted between two adjacent display devices 30, so that the display panel 100 can be obtained. In this way, in the manufacturing process, the blocking wall 60 does not need to be formed on the driving substrate 10, the manufacturing difficulty is reduced, the color conversion layer 50 and the display device 30 are mutually independent, a certain gap can be reserved between the color conversion layer 50 and the display device 30, the influence on the mutual structure caused by the direct contact of the color conversion layer 50 and the display device 30 is avoided, and the precision of each part in the display panel 100 is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.