STEREOSCOPIC IMAGE DISPLAY DEVICE

• US 20110084961A1
• Filed: 09/24/2010
• Published: 04/14/2011
• Est. Priority Date: 10/09/2009
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Im, Heejin, SON, Jungeun
• Granted Patent: US 8,482,597 B2
• Time in Patent Office: Days
• US Class Current: 345/419
• CPC Class Codes: G02B 30/36 using refractive optical elements, e.g. prisms, in the optical path between the images and the observer
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/322 using varifocal lenses or mirrors

Abstract

A stereoscopic image display device comprises a display panel, and a lens panel disposed on one surface of the display panel, wherein the lens panel includes, a lower substrate, a lower electrode layer having electrodes divided in plurality on one surface of the lower substrate, a liquid crystal layer disposed on the lower electrode layer and tilted in a lens form, an upper substrate combined to the lower substrate, and an upper electrode layer disposed on one surface of the upper substrate and having pattern omissions where a part of electrodes is omitted in areas corresponding to a surface of discontinuity of the lens form.

Claims

1. A stereoscopic image display device comprising:

a display panel; and

a lens panel disposed on one surface of the display panel,

wherein the lens panel includes;

a lower substrate;

a lower electrode layer having electrodes divided in plurality on one surface of the lower substrate;

a liquid crystal layer disposed on the lower electrode layer and tilted in a lens form;

an upper substrate combined to the lower substrate; and

an upper electrode layer disposed on one surface of the upper substrate and having pattern omissions where a part of electrodes is omitted in areas corresponding to a surface of discontinuity of the lens form.

2. The stereoscopic image display device of claim 1, wherein the liquid crystal layer is tilted in a Fresnel lens form, and

wherein the pattern omissions are disposed corresponding to the surface of discontinuity of the Fresnel lens form.

3. The stereoscopic image display device of claim 1, wherein the number of the surface of discontinuity of the Fresnel lens form is at least two per pitch of unit lens.

4. The stereoscopic image display device of claim 1, wherein areas of the upper electrode layer correspond to at least transmissive areas of the display panel.

5. The stereoscopic image display device of claim 1, wherein the lower electrode layer comprises:

a first electrode layer having an electrode which is divided in plurality on the lower substrate;

an insulating layer placed on the first electrode layer; and

a second electrode layer having an electrode which is divided in plurality on the insulating layer.

6. The stereoscopic image display device of claim 5, wherein the divided electrodes of the first electrode layer and the divided electrodes of the second electrode layer are positioned in one direction.

7. The stereoscopic image display device of claim 5, wherein the divided electrodes of the first electrode layer and the divided electrodes of the second electrode layer are alternately positioned.

8. The stereoscopic image display device of claim 1, wherein the upper electrode layer is supplied with a voltage equal to a common voltage supplied to the display panel.

9. The stereoscopic image display device of claim 1, wherein at least different voltage is supplied to the lower electrode layer corresponding to each of left and right areas with respect to a central area of the lens form.

10. The stereoscopic image display device of claim 1, wherein the display panel comprises a liquid crystal display panel.

11. The stereoscopic image display device of claim 1, wherein the upper electrode layer has at least two pattern omissions per subpixel.

12. The stereoscopic image display device of claim 1, wherein the upper electrode layer has at least four pattern omissions per subpixel.

13. A stereoscopic image display device comprising:

a display panel; and

a lens panel disposed on one surface of the display panel,

wherein the lens panel includes;

a lower substrate;

a first lower electrode layer having an electrode which is divided in plurality on one surface of the lower substrate;

a second lower electrode layer having an electrode which is divided in plurality on the first electrode layer;

an upper substrate combined to the lower substrate;

an upper electrode layer placed on one surface of the upper substrate and having at least two pattern omissions where a part of electrodes are omitted; and

a liquid crystal layer tilted in a lens form by electric fields generated between the first and second lower electrode layers and the upper electrode layer.

14. The stereoscopic image display device of claim 13, wherein the liquid crystal layer is tilted in a Fresnel lens form having a surface of discontinuity, and

wherein the pattern omissions are disposed corresponding to the surface of discontinuity.

15. The stereoscopic image display device of claim 14, wherein the number of the surface of discontinuity is at least two per pitch of unit lens.

16. The stereoscopic image display device of claim 13, wherein the first lower electrode layer and the second lower electrode layer are partitioned by an insulating layer, and

wherein the divided electrodes of the first lower electrode layer and the divided electrodes of the second lower electrode layer are alternately positioned not to overlap each other.

17. The stereoscopic image display device of claim 13, wherein

the upper electrode layer has four pattern omissions per subpixel.

18. The stereoscopic image display device of claim 13, wherein the upper electrode layer is supplied with a voltage equal to a common voltage supplied to the display panel.

19. The stereoscopic image display device of claim 13, wherein at least different voltage is supplied to the first and second lower electrode layers corresponding to each of left and right areas with respect to a central area of the lens form.