Three-dimensional display module and display device comprising first and second cylinder lens assemblies each having a refractive index different from each other

Patent metadata

Field	Value
Publication number	US-9784983-B1
Application number	US-201615204859-A
Country	US
Kind code	B1
Filing date	Jul 7, 2016
Priority date	Apr 12, 2016
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A three-dimensional (3D) display module and a 3D display device are disclosed. The 3D display module has a first assembly and second lens assemblies respectively having multiple first and second lenses arranged in parallel. The extending directions of the first and second lens assemblies intersect to form a specific angle and the refractive indexes of the first and second cylinder lenses are different. A liquid crystal layer is formed between the first and second cylinder lens assemblies. A first and second electrode layer are respectively formed on two sides of the liquid crystal layer. By a control technique of arranging the cylinder lens and the liquid crystals in a specific angle, a lateral and perpendicular autostereoscopic 3D display effect is accomplished. The 3D display module has advantages of a simple manufacturing and an advantage of thinning since a period and a focal length of the cylinder lens are smaller.

First claim

What is claimed is:

1. A three-dimensional (3D) display module, wherein the characteristic is in that the 3D display module comprises:
a first cylinder lens assembly having multiple first cylinder lenses arranged in parallel;
a second cylinder lens assembly having multiple second cylinder lenses arranged in parallel, wherein an extending direction of the first cylinder lens and an extending direction of the second cylinder lens intersect to form a specific angle, and a refractive index of the first cylinder lens is different from a refractive index of the second cylinder lens;
a liquid crystal layer formed between the first and second cylinder lens assemblies or respectively formed on two sides of the first and second cylinder lens assemblies;
a first electrode layer formed on a side of the liquid crystal layer; and
a second electrode layer formed on another side of the liquid crystal layer;
wherein, multiple liquid crystal molecules of the liquid crystal layer are controlled to deflect by an electric field between the first and second electrode layers, wherein under a first deflection status, an equivalent refractive index of the liquid crystal layer matches a refractive index of the first cylinder lens, but does not match a refractive index of the second cylinder lens; and under a second deflection status, the equivalent refractive index of the liquid crystal layer does not match the refractive index of the first cylinder lens but matches a refractive index of the second cylinder lens.

2. The 3D display module according to claim 1 , wherein the characteristic is in that the liquid crystal molecules of the liquid crystal layer comprises an ordinary refractive index and an extraordinary refractive index, wherein the refractive indexes of the first and second cylinder lenses are between the ordinary and extraordinary refractive indexes.

3. The 3D display module according to claim 1 , wherein the characteristic is in that under the first deflection status, a refractive index difference between the equivalent refractive index of the liquid crystal layer and the refractive index of the first cylinder lens is less than a threshold, a refractive index difference between the equivalent refractive index of the liquid crystal layer and the refractive index of the second cylinder lens is greater than the threshold; and under the second deflection status, the refractive index difference between the equivalent refractive index of the liquid crystal layer and the refractive index of the first cylinder lens is greater than the threshold and the refractive index difference between the equivalent refractive index of the liquid crystal layer and the refractive index of the second cylinder lens is less than the threshold.

4. The 3D display module according to claim 1 , wherein the characteristic is in that the liquid crystal layer is formed between the first and second lens assemblies, wherein the first electrode layer is formed on a side of the first cylinder lens assembly departing from the liquid crystal layer and the second electrode layer is formed on a side of the second cylinder lens assembly departing from the liquid crystal layer.

5. The 3D display module according to claim 1 , wherein the characteristic is in that an extending direction of the first cylinder lens and an extending direction of the second cylinder lens are perpendicular to each other.

6. The 3D display module according to claim 1 , wherein the characteristic is in that the first and second cylinder lenses are respectively convex lens structures or concave lens structures.

7. A 3D display device, wherein the characteristic is in that the 3D display device comprises a display panel and the 3D display module according to claim 1 mounted on the display panel.

8. The 3D display device according to claim 7 , wherein the characteristic is in that the display panel comprises a polarizer formed next to the 3D display module and having previous to light axis, wherein an alignment direction of the liquid crystal layer is parallel to the pervious to light axis of the polarizer.

9. The 3D display device according to claim 7 , wherein the characteristic is in that the an extending direction of the first cylinder lens is parallel to one of the long or short sides of the display panel 31 ; and an extending direction of the second cylinder lens is parallel to the other one of the long or short sides of the display panel, or the extending directions of the first and second cylinder lenses are mounted and inclined to the long and short sides of the 3D display device.

10. The 3D display device according to claim 1 , wherein the characteristic is in that the first cylinder lens is mounted adjacent to the display panel, wherein a focal length of the first cylinder lens under a first deflection status is greater than a focal length of the second cylinder lens under a second deflection status.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd
• Wuhan China Star Optoelectronics Techno0Logy Co Ltd

Inventors

• Zha Guowei

Classifications

• G02F1/1393

  the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells (G02F1/1396, G02F1/141 take precedence) · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/133528

  Polarisers · CPC title

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• G02B27/2214 Primary

  Physics · mapped topic