Display device

Patent metadata

Field	Value
Publication number	US-12461405-B2
Application number	US-202218280306-A
Country	US
Kind code	B2
Filing date	Nov 23, 2022
Priority date	Nov 23, 2022
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A display device is provided, and the display device includes a display panel and a light adjusting portion. The light adjusting portion is stacked with the display panel, the light adjusting portion includes a first substrate, a refractive index variable material layer, an electrode structure, and a second substrate stacked with each other, and the refractive index variable material layer and the electrode structure are between the first substrate and the second substrate. The light adjusting portion further includes a plurality of signal lines, and the electrode structure and the plurality of signal lines are on the first substrate; the electrode structure includes a first electrode structure and a second electrode structure, the first electrode structure includes a plurality of first electrodes insulated from each other, the first substrate includes a plurality of regions, and first electrodes in different regions are configured to be electrically connected to different signal lines.

First claim

The invention claimed is:

1 . A display device, comprising:
a display panel; a light adjusting portion, stacked with the display panel, wherein the light adjusting portion comprises a first substrate, a refractive index variable material layer, an electrode structure, and a second substrate stacked with each other, and the refractive index variable material layer and the electrode structure are between the first substrate and the second substrate; the light adjusting portion further comprises a plurality of signal lines, and the electrode structure and the plurality of signal lines are on the first substrate; and the electrode structure comprises a first electrode structure and a second electrode structure, the first electrode structure comprises a plurality of first electrodes insulated from each other, the first substrate comprises a plurality of regions, and first electrodes in different regions are configured to be electrically connected to different signal lines to achieve partition control of the light adjusting portion; the display panel comprises a plurality of sub-pixels, a ratio of a total number of the plurality of sub-pixels to a total number of the plurality of regions is N, and N is not greater than 10.

2 . The display device according to claim 1 , wherein the light adjusting portion further comprises a plurality of switch structures on the first substrate, each of the plurality of regions is provided with at least one switch structure, the plurality of signal lines comprise a plurality of first signal lines arranged along a first direction, a first electrode of each of the plurality of switch structures is electrically connected to a corresponding first signal line, and a second electrode of each of the plurality of switch structures is electrically connected to a corresponding first electrode.

3 . The display device according to claim 2 , wherein the plurality of signal lines further comprise a plurality of second signal lines arranged along a second direction, the switch structure comprises a switch transistor, a gate electrode of the switch transistor is electrically connected to a corresponding second signal line, the first direction intersects with the second direction, and the plurality of first signal lines and the plurality of second signal lines are intersected to form the plurality of regions.

4 . The display device according to claim 3 , wherein at least one second signal line of the plurality of second signal lines comprises a bent signal line.

5 . The display device according to claim 3 , wherein at least one first electrode of the plurality of first electrodes comprises a plurality of sub-electrodes electrically connected to each other, an included angle between an extension direction of at least one sub-electrode and an extension direction of at least one first signal line is not greater than 15 degrees, and the plurality of sub-electrodes are arranged along the first direction.

6 . The display device according to claim 5 , wherein the display panel further comprises a plurality of data lines arranged along the first direction and a plurality of gate lines arranged along the second direction, and an extension direction of the data line is same as an extension direction of the sub-electrode.

7 . The display device according to claim 3 , wherein the second electrode structure comprises a connection electrode provided crosswise and a plurality of second electrodes connected to the connection electrode, and an included angle between an extension direction of at least one second electrode and an extension direction of at least one first signal line is not greater than 10 degrees; and
in at least one region, the first electrode comprises a plurality of sub-electrodes, an extension direction of each sub-electrode is same as an extension direction of each second electrode, and the plurality of sub-electrodes and the plurality of second electrodes are arranged alternately along the first direction.

8 . The display device according to claim 7 , wherein the connection electrode comprises a plurality of first connection electrodes extending along an extension direction of the plurality of first signal lines and a plurality of second connection electrodes extending along an extension direction of the plurality of second signal lines, the plurality of first connection electrodes and the plurality of first signal lines are provided alternately, and the plurality of second connection electrodes and the plurality of second signal lines are provided alternately.

9 . The display device according to claim 3 , wherein the display panel further comprises a plurality of data lines arranged along the first direction and a plurality of gate lines arranged along the second direction, an extension direction of the data line is different from an extension direction of at least partial position of the first signal line, and an extension direction of the gate line is different from an extension direction of at least partial position of the second signal line.

10 . The display device according to claim 3 , wherein the display panel further comprises a plurality of data lines arranged along the first direction and a plurality of gate lines arranged along the second direction, and an orthographic projection of at least one data line on the first substrate overlaps with an orthographic projection of the first signal line on the first substrate.

11 . The display device according to claim 3 , wherein each sub-pixel comprises a thin film transistor, and a channel width-to-length ratio of the thin film transistor is not greater than a channel width-to-length ratio of the switch transistor.

12 . The display device according to claim 3 , wherein the light adjusting portion further comprises a black matrix, and an orthographic projection of the black matrix on the first substrate covers at least part of orthographic projections of the plurality of first signal lines and the plurality of second signal lines on the first substrate.

13 . The display device according to claim 1 , wherein the first electrode structure and the second electrode structure are provided in a same layer; or the first electrode structure is between the second electrode structure and the first substrate.

14 . The display device according to claim 1 , wherein portions of the plurality of signal lines are electrically connected to the plurality of first electrodes in one-to-one correspondence;
the first electrode structure and the second electrode structure are in different layers, and at least one of the plurality of signal lines is electrically connected to the second electrode structure.

15 . The display device according to claim 14 , wherein the first electrode comprises a plurality of sub-electrodes arranged along a first direction, the second electrode structure comprises a plurality of second electrodes arranged along the first direction, and the plurality of sub-electrodes and the plurality of second electrodes are provided alternately along the first direction;
the first electrode further comprises a first sub-connection portion electrically connected to the plurality of sub-electrodes, and the second electrode structure further comprises a second sub-connection portion electrically connected to the plurality of second electrodes.

16 . The display device according to claim 14 , wherein a shape of at least one signal line at a partial position overlapping with the first electrode in a direction perpendicular to the first substrate is straight or bent.

17 . The display device according to

Assignees

• Hefei Boe Optoelectronics Tech
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Wang Yijun
• Wang Sheng
• Wang Hui
• Zang Yuansheng
• Zhang Jun
• Zhou Ru
• Xu Xufei
• Ma Juncai
• Zhang Qianqian
• Wu Bingbing
• Liu Yuqi
• Liu Zhaofan
• Yang Yue

Classifications

• G02F1/1368 Primary

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/1345

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/13629

  Multilayer wirings · CPC title

• G02F1/1343

  Electrodes {(reflective electrodes G02F1/133553)} · CPC title