Display component and display device

Patent metadata

Field	Value
Publication number	US-10025141-B2
Application number	US-201414914052-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Sep 26, 2013
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

An array board includes a glass substrate including a display area and a non-display area, an organic insulation film disposed over a range of the display area and the non-display area, an array board side alignment film disposed on the organic insulation film, a film forming area restricting portion disposed in the non-display area and recessed in a part of the surface of the organic insulation film, and an alignment film material storing portion disposed closer to the display area than the film forming area restricting portion in the non-display area and recessed in a part of the organic insulation film. An angle formed by at least a part of a surface of the alignment film material storing portion and a normal line of the glass substrate is greater than an angle formed by a side surface of the film forming area restricting portion and the normal line.

First claim

The invention claimed is:

1. A display component comprising:
a substrate including a display area and a non-display area surrounding the display area;
an insulation film disposed on the substrate over a range of the display area and the non-display area;
an alignment film disposed on a surface of the insulation film over a range of the display area and the non-display area;
a film forming area restricting portion disposed in the non-display area and recessed in a part of the surface of the insulation film and having a side surface; and
an alignment film material storing portion disposed closer to the display area than the film forming area restricting portion in the non-display area and recessed in a part of the insulation film and having a side surface, wherein
an angle formed by at least a part of the surface of the alignment film material storing portion and a normal line of a plate surface of the substrate is greater than an angle formed by the side surface of the film forming area restricting portion and the normal line.

2. The display component according to claim 1 , wherein the alignment film material storing portion has a width greater than that of the film forming area restricting portion.

3. The display component according to claim 1 , wherein
the insulation film has a multilayered structure including an inorganic insulation film having a relatively small thickness and an organic insulation film having a relatively great thickness, and
the alignment film material storing portion is recessed at least in the organic insulation film.

4. The display component according to claim 1 , wherein the alignment film material storing portion is disposed to surround an entire periphery of the display area.

5. The display component according to claim 1 , wherein a minimum value of the angle formed by the at least a part of the side surface of the alignment film material storing portion and the normal line is greater than an angle formed by a portion of the side surface of the film forming area restricting portion holding a material for the alignment film and the normal line.

6. The display component according to claim 5 , wherein the minimum value of the angle formed by the at least a part of the side surface of the alignment film material storing portion and the normal line is from 60 degrees to 80 degrees.

7. The display component according to claim 6 , wherein the minimum value of the angle formed by the at least a part of the side surface of the alignment film material storing portion and the normal line is from 70 degrees to 80 degrees.

8. The display component according to claim 1 , wherein a minimum value of the angle formed by the side surface of the film forming area restricting portion and the normal line is smaller than a minimum value of the angle formed by the at least a part of the side surface of the alignment film material storing portion and the normal line.

9. The display component according to claim 8 , wherein the minimum value of the angle formed by the side surface of the film forming area restricting portion and the normal line is 50 degrees or smaller.

10. The display component according to claim 1 , a minimum value of the angle formed by an entire area of the side surface of the alignment film material storing portion and the normal line is greater than an angle formed by a portion of the side surface of the film forming area restricting portion holding a material for the alignment film and the normal line.

11. The display component according to claim 1 , wherein
the alignment film material storing portion has a plan view shape including a corner portion, the plan view shape is seen in a direction along the normal line, and
a minimum value of an angle formed by a side surface of the corner portion and the normal line is greater than an angle formed by a portion of the side surface of the film forming area restricting portion holding a material for the alignment film and the normal line.

12. A display device comprising:
the display component according to claim 1 ;
an opposed display component attached to the display component with a distance therebetween to be opposed to the display component;
liquid crystals sandwiched between the display component and the opposed display component; and
a sealing member surrounding the liquid crystals and disposed between the display component and the opposed display component to enclose the liquid crystals, wherein
the film forming area restricting portion is disposed closer to the display area than the sealing member and surrounds an entire periphery of the display area.

13. The display device according to claim 12 , further comprising:
a display element disposed on the display component or the opposed display component to face the liquid crystals; and
a semiconductor film included in the display element and formed of oxide semiconductor.

14. The display device according to claim 13 , wherein the oxide semiconductor includes indium (In), gallium (Ga), zinc (Zn), and oxide (O).

15. A display component comprising:
a substrate including a display area and a non-display area surrounding the display area;
an insulation film disposed on the substrate over a range of the display area and the non-display area;
an alignment film disposed on a surface of the insulation film over a range of the display area and the non-display area;
a film forming area restricting portion disposed in the non-display area and projecting from the surface of the insulation film; and
an alignment film material storing portion disposed closer to the display area than the film forming area restricting portion in the non-display area and recessed in a part of the insulation film.

16. A display device comprising:
the display component according to claim 15 ;
an opposed display component attached to the display component with a distance therebetween to be opposed to the display component;
liquid crystals sandwiched between the display component and the opposed display component; and
a sealing member surrounding the liquid crystals and disposed between the display component and the opposed display component to enclose the liquid crystals, wherein
the film forming area restricting portion is disposed closer to the display area than the sealing member and surrounds an entire periphery of the display area.

17. The display device according to claim 16 , further comprising:
a display element disposed on the display component or the opposed display component to face the liquid crystals; and
a semiconductor film included in the display element and formed of oxide semiconductor.

18. The display device according to claim 17 , wherein the oxide semiconductor includes indium (In), gallium (Ga), zinc (Zn), and oxide (O).

Assignees

• Sharp Kk

Inventors

• Imai Akihiro
• Kanbe Makoto
• FUKAYAMA Motoaki
• Ueda Ryoh
• Tanaka Shigeki

Classifications

• G02F1/133345 Primary

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/1337 Primary

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G02F1/133711

  by organic films, e.g. polymeric films · CPC title

• G02F2001/133388

  Physics · mapped topic