阅读说明：本技术 显示面板及显示面板制作方法 (Display panel and manufacturing method thereof ) 是由 刘凤翔 于 2019-04-24 设计创作，主要内容包括：本发明提供一种显示面板,包括基板,所述基板上定义有多个呈矩阵排列的像素区域,每个所述像素区域包括多个子像素区域；所述显示面板还包括设置于所述基板上的多个发光二极管,每个所述子像素区域上对应设置有一个所述发光二极管；同一所述像素区域上的发光二极管中,至少一个发光二极管与所述像素区域中另一个发光二极管或者与相邻像素区域中的至少一个发光二极管属于同一个发光单元,同一个所述发光单元中的各个发光二极管来自同一晶圆,具有一共同基底。本发明提供的显示面板,有利于提高显示面板的制作效率。本发明还提供所述显示面板的制作方法。(The invention provides a display panel, which comprises a substrate, wherein a plurality of pixel regions arranged in a matrix manner are defined on the substrate, and each pixel region comprises a plurality of sub-pixel regions; the display panel also comprises a plurality of light-emitting diodes arranged on the substrate, and each sub-pixel region is correspondingly provided with one light-emitting diode; and among the light emitting diodes in the same pixel region, at least one light emitting diode and another light emitting diode in the pixel region or at least one light emitting diode in an adjacent pixel region belong to the same light emitting unit, and each light emitting diode in the same light emitting unit is from the same wafer and has a common substrate. The display panel provided by the invention is beneficial to improving the manufacturing efficiency of the display panel. The invention also provides a manufacturing method of the display panel.)

1. A display panel comprises a substrate, wherein a plurality of pixel regions arranged in a matrix are defined on the substrate, and each pixel region comprises a plurality of sub-pixel regions; the method is characterized in that:

the display panel also comprises a plurality of light-emitting diodes arranged on the substrate, and each sub-pixel region is correspondingly provided with one light-emitting diode;

and among the light emitting diodes in the same pixel region, at least one light emitting diode and another light emitting diode in the pixel region or at least one light emitting diode in an adjacent pixel region belong to the same light emitting unit, and each light emitting diode in the same light emitting unit is from the same wafer and has a common substrate.

2. The display panel of claim 1, wherein in at least some of the light-emitting units, each of the light-emitting diodes in the same light-emitting unit is configured to emit a different color light.

3. The display panel according to claim 2, wherein the number of light emitting diodes for emitting light of each color is the same in the same light emitting unit.

4. The display panel according to claim 2, wherein at least two light emitting diodes for emitting each color light are provided in the same light emitting unit.

5. The display panel according to claim 2, wherein the same light emitting unit is used to emit two or three colors of light.

6. The display panel of claim 1, wherein each of the light emitting diodes belongs to the same light emitting unit as another light emitting diode in the pixel region where the light emitting diode is located or as at least one light emitting diode in an adjacent pixel region, and all the light emitting diodes in at least one light emitting unit emit light of the same color.

7. The display panel of claim 1, wherein each of the light emitting diodes belongs to the same light emitting unit as another light emitting diode in the pixel region where the light emitting diode is located or as at least one light emitting diode in an adjacent pixel region, and at least some of the light emitting units include the same number of light emitting diodes.

8. The display panel of claim 1, wherein the sub-pixel regions occupied by the light emitting diodes in the same light emitting unit are included in the same pixel region.

9. The display panel of claim 1, further comprising a self-contained light emitting diode disposed on the substrate occupying one of the sub-pixel regions.

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

providing a substrate, wherein a plurality of pixel regions arranged in a matrix are defined on the substrate, and each pixel region comprises a plurality of sub-pixel regions;

and transferring a plurality of light emitting diodes to the substrate so that each sub-pixel region is correspondingly provided with one light emitting diode, at least one light emitting diode in the same pixel region and another light emitting diode in the pixel region or at least one light emitting diode in an adjacent pixel region belong to the same light emitting unit, each light emitting diode in the same light emitting unit is from the same wafer, has a common substrate and is simultaneously transferred to the substrate, and the same light emitting units are simultaneously transferred to the substrate.

Technical Field

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

Background

In the related art, a Micro-light-emitting diode (Micro-LED) display panel includes a plurality of pixels, wherein each pixel includes a plurality of sub-pixel regions. When the Micro-LED display panel is manufactured, one way is to transfer and mount a plurality of Micro-LEDs emitting light of different colors to corresponding sub-pixel regions on the substrate, so as to achieve the full color effect of the Micro-LED display panel. In one mode, a plurality of Micro-LEDs emitting the same color light are transferred to the substrate at one time, and the transfer is required for how many times when the Micro-LEDs emitting different colors light exist. In this manner, the Micro-LEDs of different sub-pixel regions in any one pixel are mounted on the substrate via different transfer steps. Since the size of one Micro-LED is small, the transfer of the Micro-LED is difficult, and in the above manner, each Micro-LED needs to be transferred into a corresponding sub-pixel region, and in the case of a large number of Micro-LEDs, the above operation manner is time-consuming and labor-consuming; on the other hand, as the number of times of transfer increases, the product yield decreases.

Disclosure of Invention

The invention provides a display panel, which comprises a substrate, a plurality of pixel regions and a plurality of pixel electrodes, wherein the pixel regions are defined on the substrate and arranged in a matrix;

the display panel also comprises a plurality of light-emitting diodes arranged on the substrate, and each sub-pixel region is correspondingly provided with one light-emitting diode;

and among the light emitting diodes in the same pixel region, at least one light emitting diode and another light emitting diode in the pixel region or at least one light emitting diode in an adjacent pixel region belong to the same light emitting unit, and each light emitting diode in the same light emitting unit is from the same wafer and has a common substrate.

Another aspect of the present invention provides a method for manufacturing a display panel, including:

providing a substrate, wherein a plurality of pixel regions arranged in a matrix are defined on the substrate, and each pixel region comprises a plurality of sub-pixel regions;

and transferring a plurality of light emitting diodes to the substrate so that each sub-pixel region is correspondingly provided with one light emitting diode, at least one light emitting diode in the same pixel region and another light emitting diode in the pixel region or at least one light emitting diode in an adjacent pixel region belong to the same light emitting unit, each light emitting diode in the same light emitting unit is from the same wafer, has a common substrate and is simultaneously transferred to the substrate, and the same light emitting units are simultaneously transferred to the substrate.

The display panel provided by the embodiment of the invention comprises a substrate and a plurality of light-emitting units arranged on the substrate, wherein a plurality of sub-pixel regions are defined on the substrate, one light-emitting unit comprises at least two light-emitting diodes, the light-emitting diodes are required to be transferred to the substrate in a one-to-one correspondence manner with the sub-pixel regions in the manufacturing process of the display panel, and each light-emitting diode in the same light-emitting unit is from the same wafer, so that the at least two light-emitting diodes can be simultaneously cut from the wafer, and the form of the combined light-emitting units is transferred at one time. The one-time transfer operation can simultaneously transfer at least two light emitting diodes, which is beneficial to improving the manufacturing efficiency of the display panel and reducing the manufacturing complexity of the display panel.

Drawings

Fig. 1 is a schematic plan view of a Micro-LED display panel according to an embodiment.

Fig. 2 is a schematic view of a wafer structure for growing a light emitting diode.

Fig. 3 is a schematic plan view of a Micro-LED display panel provided in the second embodiment.

Fig. 4 is a schematic plan view of a Micro-LED display panel provided in the second embodiment.

Fig. 5 is another schematic plan view of the Micro-LED display panel according to the third embodiment.

Fig. 6 is a schematic plane structure diagram of a Micro-LED display panel according to an alternative embodiment of the invention.

Fig. 7 is a schematic plane structure diagram of a Micro-LED display panel according to another modified embodiment of the present invention.

Fig. 8 is a schematic flow chart of a method for manufacturing a Micro-LED display panel according to the third embodiment.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

Micro-LEDs as used herein refers to LEDs having a size of less than 100 microns, and more particularly to LEDs having a size of less than 100 microns and greater than 10 microns.