Movable electrode structure and liquid crystal lens

Patent metadata

Field	Value
Publication number	US-11221510-B2
Application number	US-201916413084-A
Country	US
Kind code	B2
Filing date	May 15, 2019
Priority date	Aug 21, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

Embodiments of the present disclosure relate to a movable electrode structure and a liquid crystal lens. The movable electrode structure includes: a substrate; a support on the substrate; a first beam having elasticity and attached to the support; an electrode attached to the first beam; and an opposing member located on the substrate and at least partially facing the first beam.

First claim

The invention claimed is:

1. A liquid crystal lens, comprising:
a first electrode structure;
a second electrode structure disposed opposite to the first electrode structure; and
a liquid crystal layer between the first electrode structure and the second electrode structure,
wherein the second electrode structure comprises a movable electrode structure,
wherein, the movable electrode structure comprises: a substrate; a support on the substrate; a first beam having elasticity and attached to the support; an electrode attached to the first beam; and an opposing member located on the substrate and at least partially facing the first beam.

2. The liquid crystal lens according to claim 1 , further comprising a control mechanism configured to generate a Coulomb force between the first beam and the opposing member such that the first beam is movable in a direction toward or away from the opposing member under the Coulomb force.

3. The liquid crystal lens according to claim 2 , wherein the second electrode structure comprises two movable electrode structures spaced apart from each other.

4. The liquid crystal lens according to claim 3 , wherein the control mechanism is further configured such that the electrodes of said two movable electrode structures move toward or away from each other.

5. The liquid crystal lens according to claim 4 , wherein the electrodes of said two movable electrode structures are made of a light shielding material.

6. The liquid crystal lens according to claim 1 , wherein the first electrode structure comprises:
a first substrate; and
a first electrode on a side of the first substrate adjacent to the liquid crystal layer,
wherein the liquid crystal lens further comprises:
a first alignment layer on a side of the first electrode adjacent to the liquid crystal layer; and
a second alignment layer on a side of the substrate of the second electrode structure adjacent to the liquid crystal layer.

7. The liquid crystal lens according to claim 1 , wherein the opposing member comprises a support portion on the substrate and a second beam attached to the support portion, the second beam being at least partially opposite to the first beam.

8. The liquid crystal lens according to claim 7 , wherein the support comprises a first support and a second support spaced from each other, the first beam comprising a first beam section attached to the first support and a second beam section attached to the second support.

9. The liquid crystal lens according to claim 8 , wherein the second beam comprises a third beam section and a fourth beam section attached to the support portion, the third beam section being at least partially opposite to the first beam section, the fourth beam section being at least partially opposite to the second beam section.

10. The liquid crystal lens according to claim 9 , wherein the support portion has holes for fixing the third beam section and the fourth beam section.

11. The liquid crystal lens according to claim 10 , wherein one end of the third beam section and one end of the fourth beam section are fixed into the holes, and the other end of the third beam section and the other end of the fourth beam section are free ends.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Zhidong
• Zhou Lijia
• Zhang Junrui
• Yan Rongjian
• Zhou Quanguo
• Tian Li
• Lan Ronghua
• Zhu Xuehui

Classifications

• G02F1/1343 Primary

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

• G02F1/133512

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

• G02F1/29 Primary

  for the control of the position or the direction of light beams, i.e. deflection · CPC title

• G02F1/133526 Primary

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title