IP Library Granted Patent US 9,595,570
Granted Patent B2
US 9,595,570 · App. 15/172,242 · Granted Mar 14, 2017

Display device

Inventors: Hsiang Lun Hsu (Tokyo, JP); Toshihiro Sato (Tokyo, JP)
Assignee: Japan Display Inc.
H01L27/3211H01L25/048H01L27/1214H01L27/322H01L27/3202H01L27/3244H01L51/5212H01L51/5218H01L51/5246H01L51/56H01L27/3246H01L2227/323
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Quick Facts
Patent No.
US 9,595,570
App. No.
15/172,242
Granted
Mar 14, 2017
Kind
B2
Abstract

A display device includes a reflection electrode located on a first substrate; a pixel electrode located above the reflection electrode; a common electrode located above the pixel electrode; a light emitting layer located between the pixel electrode and the common electrode; a first color filter located above the common electrode, the first color filter being green or red; and a second color filter located at a position overlapping the first color filter as seen in a plan view, the second color filter being yellow.

Claims (48)

1. A display device, comprising:

a reflection electrode located on a first substrate;

a pixel electrode located above the reflection electrode;

a common electrode located above the pixel electrode;

a light emitting layer located between the pixel electrode and the common electrode;

a first color filter located above the common electrode, the first color filter being green or red; and

a second color filter located at a position overlapping the first color filter as seen in a plan view, the second filter color being yellow.

2. The display device according to claim 1 , wherein the second color filter is located in contact with the first color filter.

3. The display device according to claim 1 , further comprising:

a second substrate located to face the first substrate; and

a filler located above the common electrode and held between the first substrate and the second substrate;

wherein the first color filter is located between the filler and the second substrate.

4. The display device according to claim 3 , wherein the second color filter is located between the filler and the second substrate.

5. The display device according to claim 3 , wherein the second color filter is located continuously in a first sub pixel including the first color filter of green and a second sub pixel adjacent to the first sub pixel, the second sub pixel including the first color filter of red.

6. The display device according to claim 1 , wherein the second color filter is located between the reflection electrode and the pixel electrode.

7. The display device according to claim 1 , wherein the light emitting layer emits white light.

8. The display device according to claim 1 , wherein the light emitting layer includes a first light emitting layer emitting blue light and a second light emitting layer emitting yellow light.

9. A display device, comprising:

a reflection electrode located on a first substrate;

a pixel electrode located above the reflection electrode;

a common electrode located above the pixel electrode;

a light emitting layer located between the pixel electrode and the common electrode;

a first color filter located above the common electrode; and

a second color filter located between the pixel electrode and the reflection electrode, the second color filter having a color different from a color of the first color filter.

10. The display device according to claim 9 , wherein the first color filter is green or red, and the second color filter is yellow.

11. The display device according to claim 9 , wherein the light emitting layer emits white light.

12. The display device according to claim 9 , wherein the light emitting layer includes a first light emitting layer emitting blue light and a second light emitting layer emitting yellow light.

13. The display device according to claim 9 , further comprising:

a second substrate located to face the first substrate; and

a filler located above the common electrode and held between the first substrate and the second substrate;

wherein the first color filter is located between the filler and the second substrate.

14. The display device according to claim 9 , wherein:

the reflection electrode has a recessed portion on the side of the second substrate; and

the second color filter is located in the recessed portion.

15. The display device according to claim 9 , wherein the second color filter has a recessed and protruding pattern.

16. The display device according to claim 9 , wherein the first color filter has a region overlapping the second color filter as seen in a plan view.

17. The display device according to claim 9 , comprising a plurality of sub pixels each including the reflection electrode, the pixel electrode, the common electrode and the light emitting layer;

wherein the plurality of sub pixels include:

a first sub pixel including the first color filter and the second color filter; and

a second sub pixel including a third color filter located above the common electrode, the third color filter having a color different from a color of each of the first color filter and the second color filter; and

the second sub pixel does not include the second color filter.

18. The display device according to claim 17 , wherein:

the first color filter is green or red;

the second color filter is yellow; and

the third color filter is blue.

19. The display device according to claim 17 , wherein:

a wavelength range of light transmitted through the first color filter and a wavelength range of light transmitted through the second color filter have an overlapping region; and

a wavelength range of light transmitted through the third color filter and the wavelength range of the light transmitted through the second color filter do not overlap each other.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
CORRECTIVE ASSIGNMENT TO CORRECT THE LACK OF THE CERTIFICATION OF THE TRANSLATION PREVIOUSLY RECORDED ON REEL 038916 FRAME 0171. ASSIGNOR(S) HEREBY CONFIRMS THE CERTIFICATION OF TRANSLATION. Recorded Nov 23, 2016
From: HSU, HSIANG LUN; SATO, TOSHIHIRO
To: JAPAN DISPLAY INC.
Reel/Frame 041022/0806 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 15, 2016
From: HSU, HSIANG LUN; SATO, TOSHIHIRO
To: JAPAN DISPLAY INC.
Reel/Frame 038916/0171 →
Priority Claims (1)
JP 2015-117296 · Jun 10, 2015 · national
Continuity (1)
Related Publication 20160365390A1 · Dec 15, 2016