Light adjusting structure, light adjusting module and light adjusting device

Patent metadata

Field	Value
Publication number	US-12449702-B2
Application number	US-202318686386-A
Country	US
Kind code	B2
Filing date	Feb 13, 2023
Priority date	Feb 13, 2023
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

There is provided a light adjusting structure, a light adjusting module and a light adjusting device, the light adjusting structure includes one or two light adjusting functional layers stacked, each light adjusting functional layer includes functional sub-layers in different regions, first substrates and/or second substrates of the functional sub-layers constitute a full-layer planar substrate, one of first electrodes or second electrodes of the functional sub-layers are disposed at an interval, and the other one of the first electrodes or the second electrodes are disposed at an interval or constitute a full-layer planar electrode; dye liquid crystal layers of the functional sub-layers each include a sealant between the first alignment layer and the second alignment layer, and dye molecules and liquid crystal molecules in a space surrounded by the sealant; sealants of the functional sub-layers are disposed at an interval, and spaces surrounded by the sealants are isolated.

First claim

The invention claimed is:

1. A light adjusting structure, comprising one or two light adjusting functional layers stacked, wherein each light adjusting functional layer comprises a plurality of functional sub-layers distributed in different regions, each functional sub-layer comprises a first substrate and a second substrate disposed opposite to each other, a first electrode and a second electrode respectively disposed on sides of the first substrate and the second substrate facing each other, a first alignment layer and a second alignment layer respectively disposed on sides of the first electrode and the second electrode facing each other, and a dye liquid crystal layer between the first alignment layer and the second alignment layer;
at least one of first substrates or second substrates of the functional sub-layers constitute a full-layer planar substrate, one of first electrodes or second electrodes of the functional sub-layers are disposed at an interval, and the other one of the first electrodes or the second electrodes of the functional sub-layers are disposed at an interval or constitute a full-layer planar electrode, dye liquid crystal layers of the functional sub-layers each comprise a sealant disposed between the first alignment layer and the second alignment layer in a surrounding mode, and dye molecules and liquid crystal molecules disposed in a space surrounded by the sealant, sealants of the functional sub-layers are disposed at an interval, and spaces surrounded by the sealants of the functional sub-layers are isolated from each other,
wherein each of the first electrodes and the second electrodes of the functional sub-layers are provided with at least one bonding part, outside a transmittance adjusting region in which the electrodes are located, for bonding with a flexible circuit board,
wherein each light adjusting functional layer comprises three functional sub-layers, and at least one of the first electrodes or the second electrodes of the functional sub-layers are disposed at an interval, and comprises a first electrode region, a second electrode region and a third electrode region, and the first electrode region and the second electrode region are disposed on a same side of the third electrode region,
one bonding part is provided, and is disposed on a side of the first electrode region and the second electrode region away from the third electrode region, the third electrode region is provided with an extension part, and an end of the extension part passes through the interval between the first electrode region and the second electrode region and extends to the side where the bonding part is located,
the bonding part comprises three bonding sub-parts which are spaced apart from each other, the first electrode region and the second electrode region, and the extension part are bonded with the flexible circuit board through the three bonding sub-parts respectively.

2. The light adjusting structure of claim 1 , wherein, for two light adjusting functional layers stacked on top of each other, alignment directions of the first alignment layer and the second alignment layer of each functional sub-layer in one light adjusting functional layer are respectively a first direction and a second direction parallel to each other, alignment directions of the first alignment layer and the second alignment layer of each functional sub-layer in another light adjusting functional layer are respectively a third direction and a fourth direction parallel to each other.

3. The light adjusting structure of claim 2 , wherein the first direction and the second direction are perpendicular to the third direction and the fourth direction.

4. The light adjusting structure of claim 1 , wherein first alignment layers of the functional sub-layers are disposed at an interval, and the second alignment layers of the functional sub-layers are disposed at an interval,
wherein an interval between one of the first electrodes or the second electrodes of the functional sub-layers is greater than or equal to 2 mm and less than or equal to 4 mm,
an interval between the sealants of the functional sub-layers is greater than or equal to 2 mm and less than or equal to 4 mm,
an interval between the first alignment layers of the functional sub-layers is greater than or equal to 2 mm and less than or equal to 4 mm, and an interval between the second alignment layers of the functional sub-layers is greater than or equal to 2 mm and less than or equal to 4 mm.

5. The light adjusting structure of claim 1 , wherein a transparent insulating colloid is disposed in an interval between one of the first electrodes or the second electrodes of the functional sub-layers, and in an interval between the sealants of the functional sub-layers.

6. The light adjusting structure of claim 1 , wherein the bonding part provided for the first electrodes of the functional sub-layers is a first electrode bonding part, the bonding part provided for the second electrode of the functional sub-layers is a second electrode bonding part,
the second electrode bonding part is disposed opposite to the first electrode bonding part, the flexible circuit board has a contact part disposed between the first electrode bonding part and the second electrode bonding part, the contact part comprises a first contact surface and a second contact surface facing away from each other, the first contact surface faces the first electrode bonding part, and the second contact surface faces the second electrode bonding part,
at least one first bonding terminal electrically contacting the first electrode bonding part is disposed on the first contact surface, and the first electrode of at least one of the functional sub-layers is electrically conducted with the flexible circuit board through at least one first bonding terminal, the second contact surface is provided with at least one second bonding terminal electrically contacting the second electrode bonding part, and the second electrode of at least one of the functional sub-layers is electrically conducted to the flexible circuit board through at least one second bonding terminal.

7. The light adjusting structure of claim 6 , wherein a protective colloid is provided at an interface between the contact part and the first electrode bonding part, the second electrode bonding part.

8. The light adjusting structure of claim 1 , wherein an interval between the extension part and each of the electrode regions that the extension part passes therethrough is greater than or equal to 40 μm and less than or equal to 80 μm.

9. A light adjusting module, comprising the light adjusting structure of claim 1 , and a first protective layer and a second protective layer disposed opposite to each other, and the light adjusting structure is between the first protective layer and the second protective layer.

10. The light adjusting module of claim 9 , wherein the light adjusting structure is fixed to the first protective layer and the second protective layer by two first transparent adhesive layers respectively, or,
the light adjusting structure is fixed to the first protective layer through a first transparent adhesive layer, and the light adjusting structure and the second protective layer are disposed at an interval,
the first transparent adhesive layer is a full-layer planar adhesive layer,
wherein for two light adjusting functional layers stacked, the two light adjusting functional layers are fixed by a second transparent adhesive layer,
the second transparent adhesive layer is a full-layer planar adhesive layer.

11. The light adjusting module of claim 9 , wherein the first electrodes of the functional sub-layers are disposed at an interval, and th

Assignees

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

Inventors

• Zhai Deshen
• Wang Chunlei
• Zhang Sikai
• Ju Xiaoqian
• Li Zhan
• Pang Jing
• Yang Kun

Classifications

• G02F1/134309 Primary

  characterised by their geometrical arrangement · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/13475

  in which at least one liquid crystal cell or layer is doped with a pleochroic dye, e.g. GH-LC cell (G02F1/13476 takes precedence) · CPC title

• G02F1/13725

  based on guest-host interaction (G02F1/13762, G02F1/13737, take precedence) · CPC title

• G02F1/13452 Primary

  Conductors connecting driver circuitry and terminals of panels · CPC title