Display device

Patent metadata

Field	Value
Publication number	US-2018212004-A1
Application number	US-201615743159-A
Country	US
Kind code	A1
Filing date	Apr 20, 2016
Priority date	Jul 10, 2015
Publication date	Jul 26, 2018
Grant date	—

Abstract

A display device capable of suppressing rapid degradation of a lifespan. The display device ( 1 ) includes a light emitting region 2 and a non-light emitting region 3 formed above a substrate ( 11 ). The display device ( 1 ) includes: a first electrode ( 13 ) provided above the substrate ( 11 ); a second insulating film ( 14 ) that includes an opening ( 14 a ) exposing the first electrode ( 13 ) of the light emitting region ( 2 ) and is formed in the non-light emitting region ( 3 ) above the substrate ( 11 ); an organic EL layer ( 15 ) provided above the first electrode ( 13 ) via the opening ( 14 a ); and a second electrode ( 16 ) provided above the second insulating film ( 14 ) and the organic EL layer ( 15 ). A plurality of holes ( 16 a ) dotted throughout the non-light emitting region ( 3 ) are formed in the second electrode ( 16 ).

First claim

1 . A display device comprising:
a substrate above which a light emitting region and a non-light emitting region are provided; a first electrode above the substrate; an insulating film including an opening exposing the first electrode in the light emitting region, the insulating film being provided in the non-light emitting region; an organic EL layer above the first electrode; and a second electrode above the insulating film and the organic EL layer, wherein holes dotted throughout the non-light emitting region are provided in the second electrode.

2 . The display device according to claim 1 , further comprising a protrusion protruding from the insulating film exposed by the hole,
wherein a height of the protrusion is greater than a thickness of the second electrode and an area of a top surface of the protrusion is greater than an area of a bottom surface of the protrusion.

3 . A display device comprising:
a substrate above which a light emitting region and a non-light emitting region are provided; a first electrode above the substrate; an insulating film including an opening exposing the first electrode in the light emitting region, the insulating film being provided in the non-light emitting region; an organic EL layer above the first electrode and the insulating film; and a second electrode above the organic EL layer, wherein holes dotted throughout the non-light emitting region are provided in the second electrode and the organic EL layer.

4 . The display device according to claim 3 , further comprising a protrusion protruding from the insulating film exposed by the hole,
wherein a height of the protrusion is greater than a total thickness of the second electrode and the organic EL layer and an area of a top surface of the protrusion is greater than an area of a bottom surface of the protrusion.

5 . The display device according to claim 2 ,
wherein a distance between the light emitting region and the protrusion is equal to or greater than 5 μm in a plan view.

6 . The display device according to claim 1 ,
wherein a distance between the adjacent holes is equal to or less than 4000 μm in a plan view.

7 . The display device according to claim 1 ,
wherein a distance between the light emitting region and the holes is equal to or greater than 5 μm in a plan view.

8 . The display device according to claim 1 ,
wherein the display device is a segment type organic EL display.

9 . The display device according to claim 1 ,
wherein the display device is an active matrix organic EL display.

10 . The display device according to claim 8 , further comprising partition walls above the substrate,
wherein the light emitting region and the non-light emitting region are surrounded by the partition walls.

11 . The display device according to claim 10 ,
wherein the partition walls includes:
a pair of first partition walls extended in parallel with a first direction; and
a pair of second partition walls extended in parallel with a second direction, the second direction being perpendicular to the first direction,
wherein each of the first partition walls includes one continuous bank, and wherein each of the first partition walls includes a plurality of banks.

12 . The display device according to claim 4 ,
wherein a distance between the light emitting region and the protrusion is equal to or greater than 5 μm in a plan view.

13 . The display device according to claim 3 ,
wherein a distance between the adjacent holes is equal to or less than 4000 μm in a plan view.

14 . The display device according to claim 3 ,
wherein a distance between the light emitting region and the holes is equal to or greater than 5 μm in a plan view.

15 . The display device according to claim 3 ,
wherein the display device is a segment type organic EL display.

16 . The display device according to claim 3 ,
wherein the display device is an active matrix organic EL display.

17 . The display device according to claim 15 , further comprising partition walls above the substrate,
wherein the light emitting region and the non-light emitting region are surrounded by the partition walls.

18 . The display device according to claim 17 ,
wherein the partition walls includes:
a pair of first partition walls extended in parallel with a first direction; and
a pair of second partition walls extended in parallel with a second direction, the second direction being perpendicular to the first direction,
wherein each of the first partition walls includes one continuous bank, and wherein each of the first partition walls includes a plurality of banks.

Assignees

• Futaba Denshi Kogyo Kk

Inventors

• Hirota Yuki
• Nonaka Akihiro
• Hieda Manabu

Classifications

• G09F9/302

  characterised by the form or geometrical disposition of the individual elements · CPC title

• H01L2251/5338

  Electricity · mapped topic

• H01L51/5225

  Electricity · mapped topic

• H01L2251/558

  Electricity · mapped topic

• H01L51/5012

  Electricity · mapped topic