Display device

Patent metadata

Field	Value
Publication number	US-12029083-B2
Application number	US-201817276419-A
Country	US
Kind code	B2
Filing date	Sep 21, 2018
Priority date	Sep 21, 2018
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A first metal layer that is formed by a first metal film is provided in an island shape along a pair of third wiring lines that is adjacent to each other. The first metal layer overlaps a region that is surrounded by a pair of first wiring lines, among several first wiring lines extending parallel to each other and formed by a first metal film, that is adjacent to each other, and the pair of third wiring lines, among several third wiring lines extending parallel to each other and in a direction intersecting each of the several first wiring lines.

First claim

The invention claimed is:

1. A display device comprising:
a base substrate;
a thin-film transistor (TFT) layer provided on the base substrate and formed by sequentially layering a first inorganic insulating film, a first metal film, a second inorganic insulating film, a second metal film, a third inorganic insulating film, and a third metal film;
a light-emitting element provided on the TFT layer and included in a display region;
a plurality of first wiring lines provided by the first metal film and extending parallel to each other in the display region;
a plurality of second wiring lines provided by the second metal film and extending parallel to each other in an extending direction of each of the plurality of first wiring lines in the display region;
a plurality of third wiring lines provided by the third metal film and extending parallel to each other in a direction intersecting each of the plurality of first wiring lines in the display region;
a frame region provided around the display region;
a sealing film provided covering the light-emitting element and in which a first inorganic film, an organic film, and a second inorganic film are sequentially layered;
a first dam wall provided surrounding the display region in the frame region and overlapping a circumferential end portion of the organic film;
a second dam wall provided surrounding the first dam wall in the frame region;
a first frame wiring line provided in the frame region, formed by the third metal film, and to which a high power supply voltage is input; and
a second frame wiring line provided in the frame region, formed by the third metal film, and to which a low power supply voltage is input,
wherein a first metal layer that is formed by the first metal film is provided in an island shape along a pair of third wiring lines, among the plurality of third wiring lines, that is adjacent to each other,
the first metal layer overlaps a region that is surrounded by the pair of third wiring lines adjacent to each other and a pair of first wiring lines, among the plurality of first wiring lines, that is adjacent to each other,
the first frame wiring line and the second frame wiring line are provided adjacent to each other between the first dam wall and the second dam wall, and
between the first frame wiring line and the second frame wiring line that are adjacent to each other, a third metal layer that is formed by the first metal film is provided in an island shape along the first frame wiring line and the second frame wiring line.

2. The display device according to claim 1 ,
wherein a side end portion of each of the plurality of third wiring lines is provided overlapping inclined portions of the second inorganic insulating film that is formed to cover an end portion of the first metal layer, and overlapping inclined portions of the third inorganic insulating film.

3. The display device according to claim 1 ,
wherein in the first metal layer, an opening extending through the first metal layer overlaps each of the plurality of second wiring lines.

4. The display device according to claim 3 ,
wherein the opening includes a cut out portion at the circumferential end of the first metal layer.

5. The display device according to claim 1 ,
wherein the first metal layer is divided into a plurality of portions in the region that is surrounded by the pair of third wiring lines adjacent to each other and the pair of first wiring lines adjacent to each other.

6. The display device according to claim 1 ,
wherein a second metal layer that is formed by the second metal film is provided in an island shape along the pair of third wiring lines adjacent to each other, and the second metal layer overlaps a region that is surrounded by the pair of third wiring lines adjacent to each other and a pair of second wiring lines, among the plurality of second wiring lines, that is adjacent to each other, and
the first metal layer and the second metal layer overlap each other via the second inorganic insulating film.

7. The display device according to claim 6 ,
wherein a side end portion of each of the plurality of third wiring lines overlaps an inclined portion of the third inorganic insulating film that is formed to cover an end portion of the second metal layer.

8. The display device according to claim 7 ,
wherein the second metal layer is divided into a plurality of portions in the region that is surrounded by the pair of third wiring lines adjacent to each other and the pair of second wiring lines adjacent to each other.

9. The display device according to claim 6 ,
wherein in the second metal layer, an opening extending through the second metal layer overlaps each of the plurality of first wiring lines.

10. A display device comprising:
a base substrate;
a thin-film transistor (TFT) layer provided on the base substrate and formed by sequentially layering a first inorganic insulating film, a first metal film, a second inorganic insulating film, a second metal film, a third inorganic insulating film, and a third metal film;
a light-emitting element provided on the TFT layer and included in a display region;
a plurality of first wiring lines provided by the first metal film and extending parallel to each other in the display region;
a plurality of second wiring lines provided by the second metal film and extending parallel to each other in an extending direction of each of the plurality of first wiring lines in the display region;
a plurality of third wiring lines provided by the third metal film and extending parallel to each other in a direction intersecting each of the plurality of first wiring lines in the display region;
a frame region provided around the display region;
a sealing film provided covering the light-emitting element and in which a first inorganic film, an organic film, and a second inorganic film are sequentially layered;
a first dam wall provided surrounding the display region in the frame region and overlapping a circumferential end portion of the organic film;
a second dam wall provided surrounding the first dam wall in the frame region;
a first frame wiring line provided in the frame region, formed by the third metal film, and to which a high power supply voltage is input; and
a second frame wiring line provided in the frame region, formed by the third metal film, and to which a low power supply voltage is input,
wherein a second metal layer that is formed by the second metal film is provided in an island shape along a pair of third wiring lines, among the plurality of third wiring lines, that is adjacent to each other,
the second metal layer overlaps a region that is surrounded by the pair of third wiring lines adjacent to each other and a pair of second wiring lines, among the plurality of second wiring lines, that is adjacent to each other,
the first frame wiring line and the second frame wiring line are provided adjacent to each other between the first dam wall and the second dam wall, and
between the first frame wiring line and the second frame wiring line that are adjacent to each other, a third metal layer that is formed by the first metal film is provided in an island shape along the first frame wiring line and the second frame wiring line.

11. The display device according to claim 10 ,
wherein a side end portion of each of the plurality of third wiring lines overlaps an inclined portion of the third inorganic insulating film that is formed to cover an end portion of the second metal layer.

12. The display device according to claim 10 ,
wherein the second metal layer is divided into a plurality of portions in the region that is surrounded by the pair of th

Assignees

• Sharp Kk

Inventors

• Saitoh Takao
• Miwa Masahiko
• Yamanaka Masaki
• Kanzaki Yohsuke
• Kaneko Seiji
• Sun Yi

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10D86/441 Primary

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title