Dimming substrate, manufacturing method thereof, dimming structure and dimming module

Patent metadata

Field	Value
Publication number	US-11828965-B2
Application number	US-202117483623-A
Country	US
Kind code	B2
Filing date	Sep 23, 2021
Priority date	Jan 18, 2021
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

The present disclosure provides a dimming substrate, a manufacturing method of the dimming substrate, a dimming structure and a dimming module, and relates to the technical field of display. According to the present disclosure, a bonding layer, a flexible base plate, an electrode layer and an orientation layer are sequentially arranged on a rigid carrier plate, and the bonding layer includes one or more adhesive layers. By removing flexible base films from the bonding layer, the bonding layer only includes one or more adhesive layers, such that the dimming substrate includes less flexible base films.

First claim

The invention claimed is:

1. A dimming substrate, comprising: a rigid carrier plate, a bonding layer, a flexible base plate, an electrode layer and an orientation layer which are sequentially arranged in layer configuration;
wherein the bonding layer comprises one or more adhesive layers;
wherein the dimming substrate further comprises a stress buffer layer arranged between the rigid carrier plate and the bonding layer,
wherein the stress buffer layer is configured to, during a process of cooling from an expansion state in a high-temperature environment of the dimming substrate, recover to a flat state corresponding to a low temperature from a high-temperature phase shape corresponding to the high-temperature environment, so as to generate an applied force opposite to a deformation direction of the flexible base plate;
wherein the stress buffer layer is made from a two-way memory alloy.

2. The dimming substrate according to claim 1 , wherein the bonding layer comprises a plurality of adhesive layers, and foaming materials are doped in the adhesive layers, close to the flexible base plate, in the bonding layer.

3. The dimming substrate according to claim 1 , wherein a thermal shrinkage rate of the flexible base plate in a first direction is less than or equal to 0.01%, and a thermal shrinkage rate of the flexible base plate in a second direction is also less than or equal to 0.01%,
wherein the first direction and the second direction are perpendicular to each other, and are both parallel to a plane where the flexible base plate is located.

4. The dimming substrate according to claim 1 , wherein the flexible base plate has a smaller size than the rigid carrier plate in a first direction, and also has a smaller size than the rigid carrier plate in a second direction;
wherein the first direction and the second direction are perpendicular to each other, and are both parallel to a plane where the flexible base plate is located.

5. The dimming substrate according to claim 1 , wherein the rigid carrier plate has a thickness of 0.5 mm to 1.1 mm.

6. The dimming substrate according to claim 1 , wherein the rigid carrier plate has a Young's modulus greater than 80 Pa.

7. The dimming substrate according to claim 1 , wherein the rigid carrier plate comprises a metal carrier plate and a glass carrier plate arranged on a same layer; the metal carrier plate is provided with a perforative opening; the glass carrier plate is arranged in the opening;
wherein the metal carrier plate has a larger rigidity than the glass carrier plate.

8. The dimming substrate according to claim 1 , wherein the stress buffer layer is of a netlike structure.

9. The dimming substrate according to claim 8 , wherein the netlike structure includes a plurality of grids, each grid includes a plurality of wires and a hollow area, the wires are connected end to end in sequence; and
the hollow area is hexagon.

Assignees

• Beijing Boe Sensor Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Wang Changyin
• Chen Juan
• Liang Peng
• Wang Chunlei
• Yu Jing

Classifications

• G02B5/3016 Primary

  involving passive liquid crystal elements (optical properties of liquid crystals G02F1/0063; polarising elements associated with active liquid crystal devices G02F1/133528) · CPC title

• B60J3/04

  adjustable in transparency · CPC title

• G02B27/281

  used for attenuating light intensity, e.g. comprising rotatable polarising elements · CPC title

• B60J1/00

  Windows; Windscreens; Accessories therefor (B60J10/00 takes precedence; air curtains instead of windows B60J9/04 {; sealing strips for windshields B60J10/70; sealing sash guides for sliding window panes B60J10/74; glass partitions inside vehicles to protect occupants against personal attack B60R21/12}) · CPC title

• C09K2323/05

  Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer · CPC title