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a display panel

A display panel and substrate substrate technology, applied in the direction of diodes, semiconductor devices, electrical components, etc., can solve the problems of lower yield rate of color filter functional layers, reduce high reflection, reduce the number of masks, and increase the area ratio Effect

Active Publication Date: 2022-07-29
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present application provides a display panel, which can solve the problem of the yield reduction of the color filter functional layer caused by multiple wet etching processes

Method used

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Experimental program
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Effect test

Embodiment 1

[0035] Please refer to figure 1 As shown, the display panel of the present application includes: a base substrate 10, which may be a glass substrate or a flexible substrate; a thin film transistor array layer 20, located on the base substrate 10; a light-emitting device layer 30, located on the thin film transistor array layer 20; thin film encapsulation layer 40, located on the light emitting device layer 30; light shielding layer 50, located on the thin film encapsulation layer 40, the light shielding layer 50 corresponding to the light emitting device layer An opening 501 is provided at the position of the light-emitting area of ​​30 ; an organic protective layer 60 is located on the light shielding layer 50 , which can be flattened and has a certain hardness to protect the display panel. In addition, an anti-reflection coating (not shown) may also be provided on the organic protective layer 60, which is not limited here.

[0036] The thin film transistor array layer 20 in...

Embodiment 2

[0045] Please refer to Figures 2 to 3 , the structure of the display panel of this embodiment is the same / similar to the display panel of the above-mentioned first embodiment, the only difference is: the display panel of this embodiment is on the side of the cathode 303 close to the light-emitting layer 302 and / or the A light absorption medium layer 90 is disposed on the side of the cathode 303 away from the light emitting layer 302 , and the light absorption range of the light absorption medium layer 90 is between 300 nm and 800 nm.

[0046] Generally, the metal device layer (such as cathode and anode) inside the display panel has a reflective function. Most of the external light or OLED self-luminescence entering the display panel will be reflected by the metal device layer and return to the external environment again, thereby affecting the display effect. In the present application, since the light absorbing medium layer 90 has a certain light absorbing function, it can ha...

Embodiment 3

[0053] Please refer to Figure 4 , the structure of the display panel of this embodiment is the same / similar to the display panel of the above-mentioned second embodiment, the only difference is that the light absorbing medium layer 90 of the display panel of this embodiment is located on the thin film encapsulation layer 40 and corresponds to The light shielding layer 50 is provided at the opening 501 .

[0054] Specifically, the light absorbing medium layer 90 may be located on any film layer of the inorganic layer 401 or the organic layer 402 in the thin film encapsulation layer 40 . The beneficial effects produced by this embodiment are the same as those of the above-mentioned second embodiment, which will not be repeated here.

[0055] Further, the surface of the light absorbing medium layer 90 is provided with a diffuse reflection structure 100 , and the present application does not limit the shape and size of the diffuse reflection structure 100 . The design can reduc...

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Abstract

The present application provides a display panel, comprising: a base substrate; a thin film transistor array layer on the base substrate; a light emitting device layer on the thin film transistor array layer; a light shielding layer on the light emitting device layer, the light shielding layer corresponding to the light emitting device The position of the light-emitting region of the layer is provided with an opening; the organic protective layer is located on the light-shielding layer; wherein, the opening of the light-shielding layer is filled with an organic protective layer, and the organic protective layer is a transparent material. In this application, by removing the traditional red, green and blue resists covering the light-emitting area of ​​the display panel, the area ratio of the light-shielding layer is increased, thereby reducing the number of masks for the photolithography depolarizer technology, and solving the problem of excessive color filter functional layers. In the secondary wet etching process, the yield rate of the color filter functional layer is reduced.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to a display panel. Background technique [0002] Polarizer (POL) can effectively reduce the reflectivity of the panel under strong light, but it loses nearly 58% of the light output, which greatly increases its life burden for OLED; on the other hand, the thickness of the polarizer is large, The material is brittle, which is not conducive to the development of dynamic bending products. The use of color filter (Color Filter) instead of polarizer (POL) is classified as POL-less technology. The basic structure of color filter includes red (R), green (G), blue (B) color resistance and black matrix (BM); Based on the self-luminous characteristics of OLED, the color resistance needs to correspond to the red, green and blue sub-pixel units of OLED respectively to form a color filter functional layer. However, the color filter functional layer needs to undergo multiple li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/38H10K59/126H10K50/856H10K50/84H10K71/00H10K59/8792H10K59/1201H10K59/873H10K50/865H10K59/12
Inventor 陈泽升赵勇鲜于文旭
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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