DISPLAY DEVICE AND METHOD OF MANUFACTURING DISPLAY DEVICE

• US 20190324333A1
• Filed: 04/01/2019
• Published: 10/24/2019
• Est. Priority Date: 04/18/2018
• Status: Abandoned Application

• Current Assignee: Trivale Technologies, LLC (Vector Capital Corporation)
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: TANAHARA, Manabu
• Application Number:
  US16/371,151
• Publication Number:
  US 20190324333A1
• Time in Patent Office: Days
• CPC Class Codes: G02B 30/30 involving parallax barriers
• CPC Class Codes: G02F 1/1326 Liquid crystal optical waveguides or liquid crystal cells specially adapted for gating or modulating between optical waveguides
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• 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 1/136204 Arrangements to prevent high voltage or static electricity failures
• CPC Class Codes: G02F 1/136218 Shield electrodes
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence

Abstract

According to the present invention, a display device includes a display panel, and a parallax barrier shutter panel. The parallax barrier shutter panel is provided to be opposed to the display panel. The parallax barrier shutter panel includes a plurality of first transparent electrodes, a drive IC, and an FPC. The plurality of first transparent electrodes are provided at regular intervals. The drive IC is configured to control a voltage to be applied to each of the plurality of first transparent electrodes. The FPC includes an FPC terminal electrically connected to an input terminal of the drive IC. At least one of each of the plurality of first transparent electrodes, an output terminal of the drive IC, and the FPC terminal is electrically connected to a short ring.

Claims

1. A display device comprising:

a display panel; and

a parallax barrier shutter panel provided to be opposed to the display panel, wherein

the parallax barrier shutter panel comprises;

a plurality of transparent electrodes provided at regular intervals;

a drive IC configured to control a voltage to be applied to each of the plurality of transparent electrodes; and

an FPC including an FPC terminal electrically connected to an input terminal of the drive IC, and

at least one of each of the plurality of transparent electrodes, an output terminal of the drive IC, and the FPC terminal is electrically connected to a short ring.

2. The display device according to claim 1, wherein

the parallax barrier shutter panel further comprises a high-resistance element between the short ring and at least one of each of the plurality of transparent electrodes, the output terminal of the drive IC, and the FPC terminal.

3. The display device according to claim 2, wherein

the high-resistance element is also provided between the plurality of transparent electrodes.

4. The display device according to claim 2, wherein

the drive IC comprises a plurality of the output terminals electrically connected to the plurality of transparent electrodes, and a plurality of the input terminals,

the FPC comprises a plurality of the FPC terminals electrically connected to the respective plurality of the input terminals, and

the high-resistance element is provided in a position of at least one of between the plurality of the output terminals and between the plurality of the FPC terminals.

5. The display device according to claim 1, wherein

the parallax barrier shutter panel further comprises a spark gap between the short ring and at least one of each of the plurality of transparent electrodes, the output terminal of the drive IC, and the FPC terminal.

6. The display device according to claim 5, wherein

the spark gap is also provided between the plurality of transparent electrodes.

7. The display device according to claim 5, wherein

the drive IC comprises a plurality of the output terminals electrically connected to the plurality of transparent electrodes, and a plurality of the input terminals,

the FPC comprises a plurality of the FPC terminals electrically connected to the respective plurality of the input terminals, and

the spark gap is provided in a position of at least one of between the plurality of the output terminals and between the plurality of the FPC terminals.

8. The display device according to claim 1, wherein

the parallax barrier shutter panel further comprises a capacitor between the short ring and at least one of each of the plurality of transparent electrodes, the output terminal of the drive IC, and the FPC terminal.

9. The display device according to claim 8, wherein

the capacitor is also provided between the plurality of transparent electrodes.

10. The display device according to claim 8, wherein

the drive IC comprises a plurality of the output terminals electrically connected to the plurality of transparent electrodes, and a plurality of the input terminals,

the FPC comprises a plurality of the FPC terminals electrically connected to the respective plurality of the input terminals, and

the capacitor is provided in a position of at least one of between the plurality of the output terminals and between the plurality of the FPC terminals.

11. The display device according to claim 1, wherein

the parallax barrier shutter panel further comprises a non-linear element between the short ring and at least one of each of the plurality of transparent electrodes, the output terminal of the drive IC, and the FPC terminal.

12. The display device according to claim 11, wherein

the non-linear element is also provided between the plurality of transparent electrodes.

13. The display device according to claim 11, wherein

the drive IC comprises a plurality of the output terminals electrically connected to the plurality of transparent electrodes, and a plurality of the input terminals,

the FPC comprises a plurality of the FPC terminals electrically connected to the respective plurality of the input terminals, and

the non-linear element is provided in a position of at least one of between the plurality of the output terminals and between the plurality of the FPC terminals.

14. The display device according to claim 1, wherein

the short ring is provided inside the parallax barrier shutter panel.

15. The display device according to claim 1, wherein

a plurality of the parallax barrier shutter panels are provided on one substrate, and

the short ring is provided to be shared by each the plurality of the parallax barrier shutter panels on the substrate outside the plurality of the parallax barrier shutter panels.

16. A display device comprising:

a display panel; and

a parallax barrier shutter panel provided to be opposed to the display panel, wherein

the parallax barrier shutter panel comprises;

a transparent substrate;

an electric-field shield electrode provided on the transparent substrate;

an insulation layer provided to cover the electric-field shield electrode; and

a plurality of transparent electrodes provided on the insulation layer at regular intervals.

17. A display device comprising:

a display panel; and

a parallax barrier shutter panel provided to be opposed to the display panel, wherein

the parallax barrier shutter panel comprises;

a plurality of transparent electrodes provided at regular intervals;

a drive IC configured to control a voltage to be applied to each of the plurality of transparent electrodes; and

an FPC including an FPC terminal electrically connected to an input terminal of the drive IC,

the drive IC comprises a plurality of the output terminals electrically connected to the plurality of transparent electrodes, and a plurality of the input terminals,

the FPC comprises a plurality of the FPC terminals electrically connected to the respective plurality of the input terminals, and

the parallax barrier shutter panel further comprises a high-resistance element between the plurality of transparent electrodes, the plurality of the output terminals, and the plurality of the FPC terminals.

18. The display device according to claim 17, wherein

the parallax barrier shutter panel further comprises a converter between the plurality of transparent electrodes and the plurality of the output terminals, and

the high-resistance element is provided between the plurality of transparent electrodes on a side opposed to the converter with respect to the plurality of transparent electrodes.

19. The display device according to claim 17, wherein

the parallax barrier shutter panel comprises a spark gap, a capacitor, or a non-linear element, instead of the high-resistance element.

20. A method of manufacturing a display device, the method comprising:

(a) preparing a display panel; and

(b) providing a parallax barrier shutter panel to be opposed to the display panel, wherein

the step (b) further comprises;

(c) forming a plurality of transparent electrodes on a transparent substrate at regular intervals;

(d) forming an input terminal and an output terminal of a drive IC on the transparent substrate, the drive IC being configured to control a voltage to be applied to each of the plurality of transparent electrodes;

(e) forming an FPC terminal on the transparent substrate, the FPC terminal being electrically connected to the input terminal of the drive IC;

(f) electrically connecting a short ring formed on the transparent substrate outside the parallax barrier shutter panel and at least one of each of the plurality of transparent electrodes, the output terminal of the drive IC, and the FPC terminal; and

(g) cutting off the electrical connection made in the step (f), and removing the parallax barrier shutter panel from the transparent substrate.

21. The method of manufacturing a display device according to claim 20, wherein

the step (b) further comprises (h) forming a non-linear element between the short ring and at least one of each of the plurality of transparent electrodes, the output terminal of the drive IC, and the FPC terminal.

22. The method of manufacturing a display device according to claim 21, wherein

in the step (h), the non-linear element is processed to be a semiconductor, and each of the plurality of transparent electrodes is processed to be a conductor.

23. The method of manufacturing a display device according to claim 20, wherein

before the step (c), the step (b) further comprises:

(i) forming an electric-field shield electrode on the transparent substrate; and

(j) forming an insulation layer to cover the electric-field shield electrode,

in the step (c), the plurality of transparent electrodes are formed on the insulation layer,

in the step (d), the input terminal and the output terminal are formed on the insulation layer, and

the electric-field shield electrode is electrically connected to the FPC terminal or the output terminal.

24. A method of manufacturing a display device, the method comprising:

(a) preparing a display panel; and

(b) providing a parallax barrier shutter panel to be opposed to the display panel, wherein

the step (b) further comprises;

(c) forming a plurality of transparent electrodes on a first transparent substrate at regular intervals;

(d) forming an input terminal and an output terminal of a drive IC on the first transparent substrate, the drive IC being configured to control a voltage to be applied to each of the plurality of transparent electrodes;

(e) forming an FPC terminal on the first transparent substrate, the FPC terminal being electrically connected to the input terminal of the drive IC;

(f) forming a second transparent electrode on a second transparent substrate opposed to the first transparent substrate;

(g) electrically connecting the second transparent electrode and at least one of the input terminal of the drive IC, the output terminal of the drive IC, and the FPC terminal; and

(h) cutting off the electrical connection made in the step (g), and removing the parallax barrier shutter panel from the first transparent substrate and the second transparent substrate.