Display device

Patent metadata

Field	Value
Publication number	US-2023125164-A1
Application number	US-202017801663-A
Country	US
Kind code	A1
Filing date	Mar 11, 2020
Priority date	Mar 11, 2020
Publication date	Apr 27, 2023
Grant date	—

Abstract

In a display device, a first power supply voltage line includes a first trunk wiring line, a plurality of branch wiring lines, and a second power supply voltage line includes a second trunk wiring line. The first trunk wiring line includes a first portion and a second portion. A line width of the first portion is smaller than a line width of the second portion. A frame region in a frame region provided with the first portion includes a first irregular frame edge having an irregular shape.

First claim

1 . A display device comprising:
a pixel electrode formed on a subpixel-by-subpixel basis; a common electrode; a light-emitting layer formed between the pixel electrode and the common electrode; and a first function layer and a second function layer formed between the light-emitting layer and the pixel electrode or between the light-emitting layer and the common electrode, and continuously formed across a plurality of subpixels, wherein the plurality of subpixels include a first subpixel configured to emit a first color light and a second subpixel configured to emit a second color light having a wavelength longer than the first color light, the second function layer overlaps an entirety of the pixel electrode of the second subpixel in a plan view, and the first function layer overlaps an entirety of the pixel electrode of the first subpixel in a plan view, and includes an opening overlapping, in a plan view, an inner side of a peripheral edge portion of the pixel electrode of the second subpixel.

2 . The display device according to claim 1 ,
wherein the plurality of subpixels include a third subpixel configured to emit a third color light having a wavelength longer than a wavelength of the second color light, and the first function layer includes an opening overlapping, in a plan view, an inner side of a peripheral edge portion of the pixel electrode of the third subpixel.

3 . The display device according to claim 1 ,
wherein the plurality of subpixels include a third subpixel configured to emit a third color light having a wavelength longer than a wavelength of the second color light, and the second function layer overlaps an entirety of the pixel electrode of the first subpixel and overlaps the entirety of the pixel electrode of the third subpixel, in a plan view.

4 . The display device according to claim 1 ,
wherein the plurality of subpixels include a third subpixel configured to emit a third color light having a wavelength longer than a wavelength of the second color light, and the second function layer includes an opening overlapping an inner side of a peripheral edge portion of the pixel electrode of the first subpixel and overlap an inner side of a peripheral edge portion of the pixel electrode of the third subpixel, in a plan view.

5 . The display device according to claim 1 ,
wherein the plurality of subpixels include a third subpixel configured to emit a third color light having a wavelength longer than a wavelength of the second color light, and the second function layer overlaps an entirety of the pixel electrode of the first subpixel in a plan view, and includes an opening overlapping, in a plan view, an inner side of a peripheral edge portion of the pixel electrode of the third subpixel.

6 . The display device according to claim 1 ,
wherein the plurality of subpixels include a third subpixel configured to emit a third color light having a wavelength longer than a wavelength of the second color light, and the second function layer overlaps an entirety of the pixel electrode of the third subpixel in a plan view and includes an opening overlapping, in a plan view, an inner side of a peripheral edge portion of the pixel electrode of the first subpixel.

7 . The display device according to claim 1 ,
wherein each of the first function layer and the second function layer is continuously and integrally formed.

8 . The display device according to claim 2 , further comprising
a third function layer formed between the light-emitting layer and the pixel electrode or between the light-emitting layer and the common electrode, and continuously formed across a plurality of the subpixels, wherein the third function layer overlaps an entirety of the pixel electrode of the third subpixel in a plan view.

9 . The display device according to claim 8 ,
wherein the first function layer is adjacent to the second function layer and/or the third function layer.

10 . The display device according to claim 8 ,
wherein the third function layer overlaps an entirety of the pixel electrode of the first subpixel and overlaps an entirety of the pixel electrode of the second subpixel, in a plan view.

11 . The display device according to claim 8 ,
wherein the third function layer includes an opening overlapping an inner side of a peripheral edge portion of the pixel electrode of the first subpixel in a plan view and overlaps an entirety of the pixel electrode of the second subpixel in a plan view.

12 . The display device according to claim 8 ,
wherein the third function layer includes an opening overlapping an inner side of a peripheral edge portion of the pixel electrode of the second subpixel in a plan view and overlaps an entirety of the pixel electrode of the first subpixel in a plan view.

13 . The display device according to claim 8 ,
wherein the third function layer includes an opening overlapping, in a plan view, an inner side of a peripheral edge portion of the pixel electrode of the first subpixel and an inner side of a peripheral edge portion of the pixel electrode of the second subpixel.

14 . (canceled)

15 . (canceled)

16 . The display device according to claim 1 , further comprising:
a fourth function layer formed between the light-emitting layer and the pixel electrode or between the light-emitting layer and the common electrode and on an opposite side from the first function layer with respect to the light-emitting layer, wherein the fourth function layer overlaps an entirety of the pixel electrode of the first subpixel in a plan view and includes an opening overlapping an inner side of a peripheral edge portion of the pixel electrode of the second subpixel in a plan view.

17 . The display device according to claim 16 ,
wherein the first function layer and the second function layer are electron transport layers, and the fourth function layer is a hole transport layer.

18 . (canceled)

19 . (canceled)

20 . (canceled)

21 . (canceled)

22 . The display device according to claim 1 ,
wherein the first function layer overlaps an entire periphery of a peripheral edge portion of the pixel electrode of the second subpixel in a plan view, and the second function layer overlaps an entire periphery of a peripheral edge portion of the pixel electrode of the first subpixel in a plan view.

23 . The display device according to claim 8 ,
wherein the first function layer overlaps an entire periphery of a peripheral edge portion of the pixel electrode of the second subpixel and an entire periphery of a peripheral edge portion of the pixel electrode of the third subpixel in a plan view, the second function layer overlaps an entire periphery of a peripheral edge portion of the pixel electrode of the first subpixel and an entire periphery of a peripheral edge portion of the pixel electrode of the third subpixel, in a plan view, and the third function layer overlaps an entire periphery of a peripheral edge portion of the pixel electrode of the first subpixel and an entire periphery of a peripheral edge portion of the pixel electrode of the second subpixel, in a plan view.

24 . The display device according to claim 2 ,
wherein, in the first function layer, a shape of the opening overlapping the inner side of the peripheral edge portion of the pixel electrode of the second subpixel in a plan view and a shape of the opening overlapping the inner side of the peripheral edge portion of the pi

Assignees

• Sharp Kk

Inventors

• Asaoka Yasushi
• Aomori Shigeru

Classifications

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K50/115 Primary

  comprising active inorganic nanostructures, e.g. luminescent quantum dots · CPC title

• H10K59/352

  the areas of the RGB subpixels being different · CPC title

• H10K50/15

  Hole transporting layers · CPC title

• H10K50/166

  comprising a multilayered structure · CPC title