Display module and display apparatus

Patent metadata

Field	Value
Publication number	US-11960163-B2
Application number	US-202117800574-A
Country	US
Kind code	B2
Filing date	Oct 20, 2021
Priority date	Nov 25, 2020
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A light control panel includes a first substrate and a second substrate oppositely disposed, and a first liquid crystal layer therebetween; the first substrate includes: a first base substrate; and a signal transmission line on a side of the first base substrate close to the first liquid crystal layer and in the peripheral area, the second substrate includes: a second base substrate; and a first black matrix layer on a side of the second base substrate close to the first liquid crystal layer and in the dimming area and the peripheral area; the first black matrix layer has a slot in the peripheral area, and an orthographic projection of at least a part of the slot on the first base substrate is on a side of an orthographic projection of the signal transmission line on the first base substrate, close to the dimming area.

First claim

What is claimed is:

1. A display module, comprising a display panel and a light control panel which are stacked together, wherein the light control panel is provided with a dimming area and a peripheral area surrounding the dimming area; the light control panel comprises a first substrate and a second substrate opposite to each other, and a first liquid crystal layer between the first substrate and the second substrate,
wherein the first substrate comprises:
a first base substrate; and
a signal transmission line, which is on a side of the first base substrate close to the first liquid crystal layer and is in the peripheral area,
the second substrate comprises:
a second base substrate; and
a first black matrix layer, which is on a side of the second base substrate close to the first liquid crystal layer and is in the dimming area and the peripheral area,
wherein the first black matrix layer is provided with a slot in the peripheral area, and an orthographic projection of at least a part of the slot on the first base substrate is on a side of an orthographic projection of the signal transmission line on the first base substrate, close to the dimming area,
wherein the first substrate further comprises a signal connecting line on the first base substrate; the signal connecting line comprises a first signal sub-line and a second signal sub-line which are electrically connected together and in different layers; a connecting position between the first signal sub-line and the second signal sub-line is in the peripheral area; and the slot at a position corresponding to the connecting position between the first signal sub-line and the second signal sub-line is formed with a protrusion, so that an orthographic projection of the slot on the first base substrate does not overlap an orthographic projection of the connecting position between the first signal sub-line and the second signal sub-line on the first base substrate.

2. The display module according to claim 1 , wherein the slot comprises a continuous pattern surrounding the dimming area.

3. The display module according to claim 2 , wherein the first black matrix layer is provided with at least one of the slot, the signal transmission line is around the dimming area,
the dimming area comprises a first side and a second side opposite to each other in a first direction, and a third side and a fourth side opposite to each other in a second direction;
each of the at least one slot comprises a first slot part and a second slot part opposite to each other in the first direction, and a third slot part and a fourth slot part opposite to each other in the second direction;
a distance between the first slot part of a slot of the at least one slot closest to the dimming area and the first side of the dimming area is equal to a distance between the second slot part of the slot closest to the dimming area and the second side of the dimming area, and the distance is d1;
a minimum distance between the first slot part of the slot closest to the dimming area and the signal transmission line is equal to a minimum distance between the second slot part of the slot closest to the dimming area and the signal transmission line, and the minimum distance is d2;
a distance between the third slot part of the slot closest to the dimming area and the third side of the dimming area is equal to a distance between the fourth slot part of the slot closest to the dimming area and the fourth side of the dimming area, and the distance is d3; and
a minimum distance between the third slot part of the slot closest to the dimming area and the signal transmission line is equal to a minimum distance between the fourth slot part of the slot closest to the dimming area and the signal transmission line, and the minimum distance is d4;
wherein d1:d2=kd3:d4, and k is greater than 0.8 and less than 1.2.

4. The display module according to claim 3 , wherein d1:d2 is in a range from 4:1 to 6:1.

5. The display module according to claim 1 , wherein the first signal sub-line comprises a first common electrode line, and the second signal sub-line comprises a first common voltage lead-in line; one end of the first common voltage lead-in line is connected to the first common electrode line, and the other end of the first common voltage lead-in line is connected to a first common electrode; and
an orthographic projection of the protrusion on the first base substrate overlaps an orthographic projection of the first common electrode line on the first base substrate.

6. The display module according to claim 1 , wherein the signal transmission line comprises a first common electrode line.

7. The display module according to claim 6 , wherein the first substrate further comprises:
a plurality of dimming units and a plurality of redundant dimming units, both of which are on a side of the first base substrate close to the first liquid crystal layer, wherein the plurality of dimming units are in the dimming area, and the plurality of redundant dimming units are in the peripheral area; each of the plurality of dimming units and the plurality of redundant dimming units comprises a first thin film transistor, a dimming electrode, and a first common electrode, which are on the first base substrate; and
the dimming electrode of the redundant dimming unit is electrically connected to the first common electrode.

8. The display module according to claim 7 , wherein an orthographic projection of the slot on the first base substrate overlaps an orthographic projection of the redundant dimming unit on the first base substrate.

9. The display module according to claim 7 , wherein the plurality of dimming units and the plurality of redundant dimming units are arranged side by side in a second direction to form a plurality of first dimming unit groups, the dimming units and the redundant dimming units in each of the plurality of first dimming unit groups are arranged in a first direction; the plurality of dimming units and the plurality of redundant dimming units are arranged side by side in a first direction to form a plurality of second dimming unit groups, and the dimming units and the redundant dimming units in each of the plurality of second dimming unit groups are arranged in the second direction; gates of the first thin film transistors of the dimming units and the redundant dimming units in a same first dimming unit group are connected to a same first gate line; the dimming units and the redundant dimming units in a same second dimming unit group are provided with data voltages through two first data lines, and sources of two adjacent first thin film transistors are connected to the two first data lines, respectively;
the first substrate further comprises:
a first transparent conductive layer on a side of the first base substrate close to the first liquid crystal layer, wherein the first transparent conductive layer comprises the dimming electrode; the dimming electrode comprises a plurality of first openings arranged side by side in the second direction, and each of the plurality of first openings extends in the first direction;
a first metal conductive layer on a side of the first base substrate close to the first liquid crystal layer, wherein the first metal conductive layer comprises a plurality of first gate lines arranged side by side in the second direction, the gates of the first thin film transistors and the first common electrode line, each of the plurality of first gate lines extends in the first direction, and each of an orthographic projection of each of the plurality of first gate lines on the first base substrate and an orthographic projection of the gate of the first thin film transistor on the first base substrate is within an orthograph

Assignees

• Hefei Boe Display Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Jiang Xiaoting
• Dai Ke
• Yang Haipeng
• Zhang Chunxu
• Cheng Min
• Rui Zhou

Classifications

• G02F1/133512 Primary

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

• G02F1/133388

  with constructional differences between the display region and the peripheral region · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/1347 Primary

  Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells · CPC title

• G02F1/136227

  Through-hole connection of the pixel electrode to the active element through an insulation layer · CPC title