IP Library › Granted Patent US 11,721,280
Granted Patent B2
US 11,721,280 · App. 17/274,805 · Granted Aug 8, 2023

Display device and electronic equipment

Inventor: Tao Chen (Hubei, CN)
Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
G09G3/3225H01L27/3276H01L51/5281G09G2300/0426G09G2300/0452G09G2300/0861G09G2310/08H01L27/3216
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Quick Facts
Patent No.
US 11,721,280
App. No.
17/274,805
Granted
Aug 8, 2023
Kind
B2
Abstract

A display device and an electronic equipment provided by the present application make a reflectance of a transition display region close to a reflectance of a main display region by disposing a metal reflective portion in gaps between a plurality of second pixel driving circuits in the transition display region, preventing an obvious boundary from occurring between the main display region and the transition display region when they are in a screen-off state and are under a condition of being irradiated by strong light.

Claims (24)

1. A display device, comprising a main display region, a light-transmitting display region, and a transition display region disposed between the main display region and the light-transmitting display region;

wherein the display device further comprises:

a plurality of first display pixels disposed in the main display region;

a plurality of second display pixels disposed in the transition display region and the light-transmitting display region;

a plurality of first pixel driving circuits arranged in an array in the main display region and configured to drive the first display pixels;

a plurality of second pixel driving circuits disposed in the transition display region and configured to drive the second display pixels; and

a metal reflective portion disposed in the transition display region and at least positioned in gaps between the second pixel driving circuits.

2. The display device according to claim 1 , wherein the metal reflective portion comprises at least a hollow portion, the first pixel driving circuits comprise a plurality of low-reflectance stacking portions, and at least one hollow portion is arranged side by side with part of the low-reflectance stacking portions.

3. The display device according to claim 1 , wherein the metal reflective portion comprises a plurality of hollow portions, the first pixel driving circuits comprise a plurality of low-reflectance stacking portions, and positions of the hollow portions in the metal reflective portion correspond to positions of part of the low-reflectance stacking portions in the first pixel driving circuits.

4. The display device according to claim 2 , wherein in the hollow portion and one of the low-reflectance stacking portions, which are arranged side by side, a shape of an orthographic projection of the one of the low-reflectance stacking portions on a substrate of the display device is same as or similar to a shape of an orthographic projection of the hollow portion on the substrate of the display device.

5. The display device according to claim 2 , wherein in the hollow portion and one of the low-reflectance stacking portions, which are arranged side by side, an area of an orthographic projection of the hollow portion on a substrate of the display device is equal to an area of an orthographic projection of the one of the low-reflectance stacking portions on the substrate of the display device.

6. The display device according to claim 2 , wherein a shape of an orthographic projection of the hollow portion on a substrate of the display device comprises at least one of rectangular, trapezoidal, or irregular-shaped.

7. The display device according to claim 2 , wherein the hollow portion comprises a plurality of first hollow portions, a plurality of second hollow portions, and a plurality of third hollow portions arranged at intervals, an area of each of the first hollow portions is greater than an area of each of the second hollow portions, and the area of each of the second hollow portions is greater than an area of each of the third hollow portions;

the low-reflectance stacking portion of the first pixel driving circuits comprises a plurality of first low-reflectance stacking portions, a plurality of second low-reflectance stacking portions, and a plurality of third low-reflectance stacking portions, an area of an orthographic projection of a blank stacking portion in each of the first low-reflectance stacking portions on a substrate of the display device is greater than an area of an orthographic projection of a blank stacking portion in each of the second low-reflectance stacking portions on the substrate of the display device, and the area of the orthographic projection of the blank stacking portion in each of the second low-reflectance stacking portions on the substrate of the display device is greater than an area of an orthographic projection of a blank stacking portion in each of the third low-reflectance stacking portions on the substrate of the display device; and

the first hollow portions and the first low-reflectance stacking portions are arranged side by side, the second hollow portions and the second low-reflectance stacking portions are arranged side by side, the third hollow portions and the third low-reflectance stacking portions are arranged side by side, and an area of an orthographic projection of metal in the blank stacking portions on the substrate is equal to zero.

8. The display device according to claim 1 , wherein the second pixel driving circuits compose a plurality of pixel driving circuit islands, the pixel driving circuit islands surround the light-transmitting display region, part of the metal reflective portion surrounds the pixel driving circuit islands and is disposed between the pixel driving circuit islands and the main display region, part of the metal reflective portion is disposed between the pixel driving circuit islands and the light-transmitting display region, and part of the metal reflective portion is disposed between two adjacent pixel driving circuit islands.

9. The display device according to claim 1 , wherein a boundary of the metal reflective portion adjacent to the light-transmitting display region comprises an arc-shaped boundary, and a boundary of the metal reflective portion adjacent to the main display region comprises a staged boundary.

10. The display device according to claim 1 , wherein the metal reflective portion transmits a direct current (DC) voltage signal, and the DC voltage signal comprises one of an initialization signal or a power signal.

11. The display device according to claim 10 , wherein the DC voltage signal is a power signal input to the first pixel driving circuits and/or the second pixel driving circuits.

12. The display device according to claim 1 , further comprising metal grids, wherein the metal grids are disposed in a same layer as the metal reflective portion and are connected with the metal reflective portion, part of the metal grids is arranged corresponding to the second pixel driving circuits, part of the metal grids is disposed in the main display region, and the metal grids are configured to transmit a direct current (DC) power signal.

13. The display device according to claim 1 , wherein a proportion of an orthographic projection of metal in the metal reflective portion on a substrate of the display device in a unit area is A 1 , a proportion of an orthographic projection of metal in the first pixel driving circuits on the substrate of the display device in a unit area is A 2 , and an absolute value of a difference between A 1 and A 2 is greater than or equal to 0% and less than or equal to 6%.

14. The display device according to claim 1 , wherein the first display pixels and the second display pixels comprise a plurality of organic light-emitting diodes, the metal reflective portion is disposed in a same layer as anodes of the organic light-emitting diodes, the metal reflective portion is insulated from the anodes of the organic light-emitting diodes, and a distance between the metal reflective portion and the anodes of the organic light-emitting diodes is greater than or equal to 3 microns.

15. The display device according to claim 1 , wherein material of the metal reflective portion comprises at least one of molybdenum, aluminum, titanium, or copper.

16. An electronic equipment, comprising the display device according to claim 1 and an image sensor, wherein the image sensor corresponds to the light-transmitting display region of the display device.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2021
From: CHEN, TAO
To: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Reel/Frame 055616/0637 →
Priority Claims (1)
CN 202011225327.0 · Nov 5, 2020 · national
Continuity (1)
Related Publication 20220310005A1 · Sep 29, 2022
Cited By (1)
US 12,527,178