PARALLAX BARRIER PANEL AND DISPLAY DEVICE USING PARALLAX BARRIER PANEL

• US 20170219836A1
• Filed: 12/27/2016
• Published: 08/03/2017
• Est. Priority Date: 02/03/2016
• Status: Abandoned Application

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: HYODO, Yosuke, OKA, Shinichiro
• Application Number:
  US15/391,446
• Publication Number:
  US 20170219836A1
• Time in Patent Office: Days
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/31 involving active parallax barriers involving directional light or back-light sources G02B30/33
• CPC Class Codes: G02F 1/13306 Circuit arrangements or driving methods for the control of single liquid crystal cells G02F1/132, G02F1/133382 take precedence
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/13471 in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells G02F1/13475 takes precedence
• CPC Class Codes: G02F 1/29 for the control of the position or the direction of light beams, i.e. deflection
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/376 for tracking left-right translational head movements, i.e. lateral movements

Abstract

A parallax barrier panel including a first substrate, a second substrate opposing the first substrate, a liquid crystal layer between the first substrate and the second substrate, a plurality of first electrodes arranged between the first substrate and the liquid crystal layer, the plurality of first electrodes extending in a first direction, a plurality of second electrodes arranged between the plurality of first electrodes and the liquid crystal layer, the plurality of second electrodes extending in the first direction and arranged alternating with the plurality of first electrodes in a planar view, and an opposing electrode opposing the plurality of first electrodes and the plurality of second electrodes, wherein the second electrode is insulated from the first electrode, and a width of the second electrode in the second direction intersecting the first direction is smaller than a width of the first electrode in the second direction.

Claims

1. A parallax barrier panel comprising:

a first substrate;

a second substrate opposing the first substrate;

a liquid crystal layer between the first substrate and the second substrate;

a plurality of first electrodes arranged between the first substrate and the liquid crystal layer, the plurality of first electrodes extending in a first direction;

a plurality of second electrodes arranged between the plurality of first electrodes and the liquid crystal layer, the plurality of second electrodes extending in the first direction and arranged alternating with the plurality of first electrodes in a plan view; and

an opposing electrode opposing the plurality of first electrodes and the plurality of second electrodes;

wherein

the second electrode is insulated from the first electrode, and a width of the second electrode in the second direction intersecting the first direction is smaller than a width of the first electrode in the second direction.

2. The parallax barrier panel according to claim 1, wherein the plurality of first electrodes and the plurality of second electrodes are each supplied with a different voltage respectively.

3. The parallax barrier panel according to claim 1, wherein a difference in a width of the first electrode in the second direction and a width of the second electrode in the second direction is 1.5 μ

m or more and 4.5 μ

m or less.

4. The parallax barrier panel according to claim 1, wherein the first electrode and the second electrode partially overlap in a planar view.

5. The parallax barrier panel according to claim 1, wherein both ends of the second electrode in the second direction are closer to the liquid crystal layer compared to a center section of the second electrode in the second direction.

6. The parallax barrier panel according to claim 1, further comprising:

a plurality of third electrodes arranged between the plurality of second electrodes and the liquid crystal layer, the plurality of third electrodes extending in the first direction and arranged alternating with the plurality of first electrodes and the plurality of second electrodes in a plan view;

wherein

the third electrode is insulated from the second electrode, and a width of the third electrode in the second direction is smaller than a width of the second electrode in the second direction.

11. The parallax barrier panel according to claim 1, wherein a long axis of a liquid crystal molecule included in the liquid crystal layer is arranged in a perpendicular direction to the first substrate when a driving voltage is applied, and a total of the number of adjacent first electrodes applied with the driving voltage among the plurality of first electrodes and adjacent second electrodes applied with the driving voltage among the plurality of second electrodes is an even number in the case of forming a parallax barrier.

12. The parallax barrier panel according to claim 11, wherein the even number is 4 or more.

13. A display device using a parallax barrier panel comprising:

the parallax barrier panel according to claim 1; and

a display panel arranged opposing the parallax barrier panel, the display panel including a plurality of pixels.

14. The parallax barrier panel according to claim 2, wherein a difference in a width of the first electrode in the second direction and a width of the second electrode in the second direction is 1.5 μ

m or more and 4.5 μ

m or less.

15. The parallax barrier panel according to claim 2, wherein the first electrode and the second electrode partially overlap in a planar view.

16. The parallax barrier panel according to claim 3, wherein the first electrode and the second electrode partially overlap in a planar view.

7. A parallax barrier panel comprising:

a first substrate;

a second substrate opposing the first substrate;

a liquid crystal layer between the first substrate and the second substrate;

a plurality of first electrodes arranged between the first substrate and the liquid crystal layer, the plurality of first electrodes extending in a first direction;

a plurality of second electrodes arranged between the plurality of first electrodes and the liquid crystal layer, the plurality of second electrodes extending in the first direction and arranged alternating with the plurality of first electrodes in a planar view; and

an opposing electrode opposing the plurality of first electrodes and the plurality of second electrodes;

wherein

the second electrode is insulated from the first electrode, and is supplied with a smaller voltage than the first electrode.

8. The parallax barrier panel according to claim 7, wherein the first electrode and the second electrode partially overlap in a planar view.

9. The parallax barrier panel according to claim 7, wherein both ends of the second electrode in the second direction intersecting the first direction are closer to the liquid crystal layer compared to a center section of the second electrode in the second direction.

10. The parallax barrier panel according to claim 7, further comprising:

a plurality of third electrodes arranged between the plurality of second electrodes and the liquid crystal layer, the plurality of third electrodes extending in the first direction and arranged alternating with the plurality of first electrodes and the plurality of second electrodes in a plan view;

wherein

the third electrode is insulated from the second electrode, and is supplied with a smaller voltage than the second electrode.

17. The parallax barrier panel according to claim 8, wherein both ends of the second electrode in the second direction intersecting the first direction are closer to the liquid crystal layer compared to a center section of the second electrode in the second direction.

18. The parallax barrier panel according to claim 8, further comprising:

a plurality of third electrodes arranged between the plurality of second electrodes and the liquid crystal layer, the plurality of third electrodes extending in the first direction and arranged alternating with the plurality of first electrodes and the plurality of second electrodes in a plan view;

wherein

the third electrode is insulated from the second electrode, and is supplied with a smaller voltage than the second electrode.

19. The parallax barrier panel according to claim 9, further comprising:

a plurality of third electrodes arranged between the plurality of second electrodes and the liquid crystal layer, the plurality of third electrodes extending in the first direction and arranged alternating with the plurality of first electrodes and the plurality of second electrodes in a plan view;

wherein

the third electrode is insulated from the second electrode, and is supplied with a smaller voltage than the second electrode.

20. The parallax barrier panel according to claim 7, wherein a long axis of a liquid crystal molecule included in the liquid crystal layer is arranged in a perpendicular direction to the first substrate when a driving voltage is applied, and a total of the number of adjacent first electrodes applied with the driving voltage among the plurality of first electrodes and adjacent second electrodes applied with the driving voltage among the plurality of second electrodes is an even number in the case of forming a parallax barrier.