DISPLAY DEVICE

• US 20180284516A1
• Filed: 03/30/2018
• Published: 10/04/2018
• Est. Priority Date: 03/31/2017
• Status: Abandoned Application

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: KOBAYASHI, Masahiro
• Application Number:
  US15/941,039
• Publication Number:
  US 20180284516A1
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13396 Spacers having different sizes
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements

Abstract

According to one embodiment, display device includes a first substrate provided with pixels including pixel electrodes, respectively, a second substrate opposed to the first substrate, a liquid crystal layer enclosed between the first substrate and the second substrate, a first spacer and a second spacer on an inner surface of the second substrate opposed to the first substrate, the second spacer differing in height from the first spacer, first array pillars on the first substrate, opposed to the first spacer and the second spacer, respectively, and second array pillars on the first substrate, differing in height from the first array pillars, respectively.

Claims

1. A display device comprising:

a first substrate provided with pixels including pixel electrodes, respectively;

a second substrate opposed to the first substrate;

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

a first spacer and a second spacer on an inner surface of the second substrate opposed to the first substrate, the second spacer differing in height from the first spacer;

first array pillars on the first substrate, opposed to the first spacer and the second spacer, respectively; and

second array pillars on the first substrate, differing in height from the first array pillars, respectively.

2. The display device of claim 1, wherein

the first spacer has a length extending in a first direction,

each of the first array pillars extends in a second direction intersecting the first direction, and

the first spacer abuts one of the first array pillars.

3. The display device of claim 2, wherein

the second spacer extends in the first direction, and is aligned with the first spacer in the first direction, and

the second spacer is formed lower than the first spacer, and opposed to one of the first array pillars with a gap therebetween.

4. The display device of claim 3, wherein

the second array pillars are arranged in the first direction with the first array pillars, and

the second array pillars are formed lower than the first array pillars.

5. The display device of claim 4, wherein

each of the second array pillars extends in the second direction.

6. The display device of claim 3, wherein

the second array pillars are arranged in the first direction with the first array pillars, and

the second array pillars are formed higher than the first array pillars.

7. The display device of claim 6, wherein

each of the second array pillars extends in the second direction.

8. The display device of claim 7, wherein

the second array pillars are disposed on both sides of each of the first array pillars in the first direction, and

each of the second array pillars has both end portions in the second direction, and both the end portions are bent or curved to the first array pillar side.

9. The display device of claim 1, wherein

the first substrate comprises:

a first insulating substrate comprising an inner surface opposed to the second substrate;

a first insulating film on the inner surface of the first insulating substrate;

scanning lines on the first insulating film, each extending in the first direction;

a second insulating film on the first insulating film to overlap the scanning lines;

signal lines on the second insulating film, extending in a second direction intersecting the first direction;

a switching element connected to the signal lines and the scanning lines;

a third insulating film on the second insulating film to overlap the signal lines;

a common electrode on the third insulating film; and

a fourth insulating film on the common electrode, and

the first array pillars are provided on the fourth insulating film.

10. The display device of claim 9, wherein

the second array pillars are formed of projections formed on the third insulating film and overlapping portions of the common electrode and the fourth insulating film, which overlap the projections.

11. The display device of claim 9, wherein

the second array pillars are provided on the fourth insulating film.

12. The display device of claim 1, wherein

the first substrate comprises:

a first insulating substrate comprising an inner surface opposed to the second substrate;

a first insulating film on the inner surface of the first insulating substrate;

scanning lines on the first insulating film, each extending in a first direction;

a second insulating film on the first insulating film to overlap the scanning lines;

signal lines on the second insulating film, extending in a second direction intersecting the first direction;

a switching element connected to the signal lines and the scanning lines;

a third insulating film on the second insulating film to overlap the signal lines;

a common electrode on the third insulating film; and

a fourth insulating film on the common electrode, and

the first array pillars are formed of projections formed on the third insulating film and overlapping portions of the common electrode and the fourth insulating film, which overlap the projections.

13. The display device of claim 12, wherein

the second array pillars are provided on the fourth insulating film.