Liquid crystal grating substrate, liquid crystal grating and stereoscopic display device

Patent metadata

Field	Value
Publication number	US-9664914-B2
Application number	US-201414437068-A
Country	US
Kind code	B2
Filing date	Oct 28, 2014
Priority date	Mar 28, 2014
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

The present invention provides a liquid crystal grating substrate, a liquid crystal grating and a stereoscopic display device The liquid crystal grating substrate, the liquid crystal grating and the stereoscopic display device provided in the present invention can control the voltages of the electrode strips respectively, thereby not only improving the control precision of the liquid crystal grating, but also ensuring diversified control forms to meet various adjustment requirements for the width of the light transmissive area or non-light transmissive area of the liquid crystal grating; meanwhile, the liquid crystal grating is easy to drive and the sizes of the light transmissive areas can be controlled, thus the circuit design difficulty and the production cost are reduced, and the 3D crosstalk problem can be solved.

First claim

The invention claimed is:

1. A liquid crystal grating substrate, comprising a driving area used for forming a grating, wherein the liquid crystal grating substrate is provided with a first electrode structure, the first electrode structure comprises a plurality of electrode strips, and each electrode strip of the plurality of electrode strips comprises:
a plurality of connecting parts arranged outside one side of the driving area, a projection part penetrating through the driving area arranged between every two adjacent connecting parts, and each projection part is provided with two mutually parallel driving parts arranged in the driving area; each of the two mutually parallel driving parts of all the projection parts are mutually parallel; and one end of each of the two mutually parallel driving parts in each projection part is connected with one end of a connecting part adjacent thereto;
wherein one end of each electrode strip of the plurality of electrode strips is a connecting end, the connecting end is used for connecting a driving circuit, and the driving circuit is used for providing a driving voltage for the plurality of electrode strips; and
the projection parts of the plurality of electrode strips have a same projection direction, and the projection parts of the plurality of electrode strips are arranged towards the projection direction of the projection parts according to a sequence such that distances between the two mutually parallel driving parts of the projection parts increase sequentially, and the projection part of one electrode strip of two adjacent electrode strips is arranged inside of the projection part of the other electrode strip of the two adjacent electrode strips.

2. The liquid crystal grating substrate of claim 1 , wherein distances between the projection parts of every two adjacent electrode strips in the plurality of electrode strips are equal.

3. The liquid crystal grating substrate of claim 1 , wherein distances between the center lines of the adjacent projection parts of the plurality of electrode strips are equal.

4. The liquid crystal grating substrate of claim 1 , wherein the connecting parts of all the plurality of electrode strips are arranged on one side of the driving area, or
connecting parts of a part of the plurality of electrode strips are arranged at one side of the driving area, and connecting parts of the rest of the plurality of electrode strips are arranged at the other side of the driving area opposite to the one side.

5. The liquid crystal grating substrate of claim 1 , wherein the driving circuit configures the voltages of the plurality of electrode strips respectively.

6. A liquid crystal grating, comprising a first substrate and a second substrate, which are arranged oppositely, and a liquid crystal layer arranged between the first substrate and the second substrate, wherein the first substrate is a liquid crystal grating substrate, and the liquid crystal grating substrate comprising a driving area used for forming a grating, wherein the liquid crystal grating substrate is provided with a first electrode structure, the first electrode structure comprises a plurality of electrode strips, and each electrode strip of the plurality of electrode strips comprises: a plurality of connecting parts arranged outside one side of the driving area, a projection part penetrating through the driving area arranged between every two adjacent connecting parts, and each projection part is provided with two mutually parallel driving parts arranged in the driving area; each of the two mutually parallel driving parts of all the projection parts are mutually parallel; and one end of each of the two mutually parallel driving parts in each projection part is connected with one end of a connecting part adjacent thereto; wherein one end of each electrode strip of the plurality of electrode strips is a connecting end, the connecting end is used for connecting a driving circuit, and the driving circuit is used for providing a driving voltage for the plurality of electrode strips;
the second substrate comprises a second electrode structure, and an electric field is generated between the second electrode structure and the first electrode structure of the first substrate to drive liquid crystal molecules in the liquid crystal layer to deflect; and
the projection parts of the plurality of electrode strips have a same projection direction, and the projection parts of the plurality of electrode strips are arranged toward the projection direction of the projection parts according to a sequence such that distances between the two mutually parallel driving parts of the projection parts increase sequentially, and the projection part of one electrode strip of two adjacent electrode strips is arranged inside of the projection part of the other electrode strip of the two adjacent electrode strips.

7. The liquid crystal grating of claim 6 , wherein distances between the projection parts of every two adjacent electrode strips in the plurality of electrode strips are equal.

8. The liquid crystal grating of claim 6 , wherein distances between the center lines of the adjacent projection parts of the plurality of electrode strips are equal.

9. The liquid crystal grating of claim 6 , wherein the connecting parts of all the plurality of electrode strips are arranged on one side of the driving area, or
connecting parts of a part of the plurality of electrode strips are arranged at one side of the driving area, and connecting parts of the rest of the plurality of electrode strips are arranged at the other side of the driving area opposite to the one side.

10. The liquid crystal grating of claim 6 , wherein the driving circuit configures the voltages of the plurality of electrode strips respectively.

11. A stereoscopic display device, comprising a display panel, wherein a liquid crystal grating is arranged outside the light output surface of the display panel, and
the liquid crystal grating comprising a first substrate and a second substrate, which are arranged oppositely, and a liquid crystal layer arranged between the first substrate and the second substrate, wherein the first substrate is a liquid crystal grating substrate, and the liquid crystal grating substrate comprising a driving area used for forming a grating, wherein the liquid crystal grating substrate is provided with a first electrode structure, the first electrode structure comprises a plurality of electrode strips, and each electrode strip of the plurality of electrode strips comprises: a plurality of connecting parts arranged outside one side of the driving area, a projection part penetrating through the driving area arranged between every two adjacent connecting parts, and each projection part is provided with two mutually parallel driving parts arranged in the driving area; each of the two mutually parallel driving parts of all the projection parts are mutually parallel; and one end of each of the two mutually parallel driving parts in each projection part is connected with one end of a connecting part adjacent thereto; wherein one end of each electrode strip of the plurality of electrode strips is a connecting end, the connecting end is used for connecting a driving circuit, and the driving circuit is used for providing a driving voltage for the plurality of electrode strips;
the second substrate comprises a second electrode structure, and an electric field is generated between the second electrode structure and the first electrode structure of the first substrate to drive liquid crystal molecules in the liquid crystal layer to deflect; and
the projection parts of the plurality of electrode strips have a same projection direction, and t

Assignees

• Boe Technology Group Co Ltd

Inventors

• Gu Yaohui

Classifications

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• G02F1/29 Primary

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

• G02F1/292

  by controlled diffraction or phased-array beam steering (controlled diffraction for optical switching G02F1/31) · CPC title