IP Library › Granted Patent US 11,411,207
Granted Patent B2
US 11,411,207 · App. 16/753,850 · Granted Aug 9, 2022

Display panel and method of manufacturing same

Inventor: Junjie Wu (Wuhan, CN)
Assignee: Wuhan China Star Optoelectronics Semiconduetor Display Technology Co., Ltd.
H01L51/56H01L27/3211H01L27/3246H01L51/0011H01L51/0012H01L2227/323
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Quick Facts
Patent No.
US 11,411,207
App. No.
16/753,850
Granted
Aug 9, 2022
Kind
B2
Abstract

A display panel and a method of manufacturing the display panel are provided. The display panel includes an array substrate, a pixel definition layer, and spacers. Each of spacers includes a bottom surface and a top surface. A cross-sectional area of the top surface is less than a cross-sectional area of the bottom surface. A horizontal distance from a center to a side of the spacer gradually increases from the top surface to the bottom surface. Moreover, holes of the mask plate corresponding to positions of the spacers are defined, which ensures accuracy of photolithography and display effect of the display panel.

Claims (13)

1. A method of manufacturing a display panel, comprising following steps:

S 100 , fabricating a base substrate, an array substrate, and a pixel definition layer of the display panel;

S 101 , fabricating a plurality of spacers on the pixel definition layer;

S 102 , forming a plurality of holes on a mask plate corresponding to positions of the spacers by a fine metal mask plate evaporation technology, wherein the holes of the mask plate corresponding to positions of the spacers comprise through holes and blind holes; and

S 103 , aligning the mask plate with the spacers and performing a vapor deposition process.

2. The method of manufacturing the display panel according to claim 1 , wherein the step S 100 further comprises forming a plurality of openings in a pixel effective region of the pixel definition layer by a photolithography process.

3. The method of manufacturing the display panel according to claim 1 , wherein a cross-sectional shape of the spacers includes circular.

4. The method of manufacturing the display panel according to claim 1 , wherein a cross-sectional shape of the spacers includes square.

5. The method of manufacturing the display panel according to claim 1 , wherein a side of each of the spacers has a slope.

6. The method of manufacturing the display panel according to claim 1 , wherein the holes of the mask plate comprise through holes or blind holes in the step S 102 .

7. The method of manufacturing the display panel according to claim 6 , wherein a diameter of the holes of the mask plate is less than 12 um.

8. The method of manufacturing the display panel according to claim 1 , wherein a height of the spacers corresponding to the through holes is greater than a height of the spacers corresponding to the blind holes.

9. The method of manufacturing the display panel according to claim 1 , wherein after an alignment of the mask plate and the spacers is completed in the step S 103 , red pixels, blue pixels, and green pixels are vapor-deposited through the mask plate, respectively.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 6, 2020
From: WU, JUNJIE
To: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Reel/Frame 052578/0651 →
Priority Claims (1)
CN 201911157302.9 · Nov 22, 2019 · national
Continuity (1)
Related Publication 20210408506A1 · Dec 30, 2021