DISPLAY DEVICE, ELECTRONIC APPARATUS, AND METHOD OF MANUFACTURING DISPLAY DEVICE

• US 20130100388A1
• Filed: 10/18/2012
• Published: 04/25/2013
• Est. Priority Date: 10/25/2011
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Inventors: Matsushima, Toshiharu
• Granted Patent: US 9,298,051 B2
• Time in Patent Office: Days
• US Class Current: 349/123
• CPC Class Codes: G02F 1/134318 having a patterned common electrode
• 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 1/134372 for fringe field switching [FFS] where the common electrode is not patterned

Abstract

A display device includes an electrode layer and a liquid crystal layer. The electrode layer has a first electrode and a second electrode. The second electrode is opposed to the first electrode and having a plurality of openings extending in a same extending direction. The liquid crystal layer is disposed on the electrode layer. The liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, are rotated in opposite directions from each other and aligned.

Claims

1. A display device comprising:

an electrode layer including a first electrode and a second electrode, the second electrode being opposed to the first electrode and having a plurality of openings extending in a same extending direction; and

a liquid crystal layer disposed on the electrode layer, liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, being rotated in opposite directions from each other and aligned.

2. The display device according to claim 1,

wherein the openings have an electric field control section, and liquid crystal molecules from an end of the opening to the electric field control section in the extending direction are rotated in a same rotation direction.

3. The display device according to claim 2,

wherein the openings have an extended-width part in the width direction of the openings, and the electric field control section is a corner part disposed at a point of intersection of the opening and the extended-width part.

4. The display device according to claim 3,

wherein the extended-width part is a communicating extended-width part for making the openings adjacent to each other in the width direction communicate with each other.

5. The display device according to claim 4,

wherein an upper side part and a lower side part of the opening are displaced from each other in the width direction and arranged in a staggered form with the communicating extended-width part interposed between the upper side part and the lower side part of the opening.

6. The display device according to claim 1,

wherein an alignment film is disposed between the electrode layer and the liquid crystal layer, and

the alignment film has been subjected to a rubbing process in a direction parallel to the extending direction.

7. The display device according to claim 1,

wherein an alignment film is disposed between the electrode layer and the liquid crystal layer, the alignment film having been subjected to a rubbing process in a predetermined direction parallel to the extending direction, and

the openings have an extended-width part at a position closer to an end part in a direction opposite from the predetermined direction than an end part in the predetermined direction.

8. The display device according to claim 7,

wherein the extended-width part is a communicating extended-width part for making the openings adjacent to each other in the width direction communicate with each other.

9. The display device according to claim 8,

wherein the openings are divided into a first opening and a second opening in the extending direction with the communicating extended-width part as a boundary, and the first opening and the second opening are disposed so as to be displaced from each other in the width direction.

10. The display device according to claim 1,

wherein the openings adjacent to each other in the extending direction are displaced from each other in the width direction and arranged in a staggered form.

11. The display device according to claim 1,

wherein the openings have a rectangular shape.

12. The display device according to claim 1,

wherein the openings have a substantially rhombic shape.

13. The display device according to claim 1,

wherein a dielectric film is disposed between the first electrode and the second electrode.

14. An electronic apparatus comprising:

a display device;

wherein the display device includes

an electrode layer including a first electrode and a second electrode, the second electrode being opposed to the first electrode and having a plurality of openings extending in a same extending direction, and

a liquid crystal layer disposed on the electrode layer, liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of the opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, being rotated in opposite directions from each other and aligned.

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

forming an electrode layer including a first electrode and a second electrode, the second electrode being opposed to the first electrode and having a plurality of openings extending in a same extending direction; and

forming a liquid crystal layer on the electrode layer after performing alignment treatment so that liquid crystal molecules of the liquid crystal layer in a region in proximity to one side of an opening and liquid crystal molecules of the liquid crystal layer in a region in proximity to another side of the opening, the sides of the opening being opposed to each other in a width direction of the opening, are rotated in opposite directions from each other and aligned.