IP Library › Granted Patent US 10,923,538
Granted Patent B2
US 10,923,538 · App. 16/741,599 · Granted Feb 16, 2021

Display device

Inventors: Young Hee Lee (Suwon-si, KR); Hyun Shik Lee (Incheon, KR); Seung Wook Chang (Suwon-si, KR); Byoung Seong Jeong (Suwon-si, KR); Sang Woo Pyo (Seongnam-si, KR); Jae Hoon Hwang (Seoul, KR); Ji Hwan Yoon (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
H01L27/322H01L51/502H01L51/5206H01L51/5234H01L51/5237
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Quick Facts
Patent No.
US 10,923,538
App. No.
16/741,599
Granted
Feb 16, 2021
Kind
B2
Abstract

A display device includes a first base member having a first light-emitting area, a second light-emitting area, and a non-light-emitting area between the first and second light-emitting areas; a second base member on the first base member; a first color filter on a first surface of the second base member that faces the first base member and overlapping with the first light-emitting area; a second color filter on the first surface of the second base member and overlapping with the second light-emitting area; a color pattern on the first surface of the second base member, between the first and second color filters, and overlapping with the non-light-emitting area; a light-shielding member on the color pattern and overlapping with the non-light-emitting area; and a first wavelength conversion pattern on the second color filter and including a first wavelength shifter.

Claims (102)

1. A display device comprising:

a first base member having a first light-emitting area, a second light-emitting area, and a non-light-emitting area between the first and second light-emitting areas;

a first anode electrode on the first base member and located in the first light-emitting area;

a second anode electrode on the first base member and located in the second light-emitting area;

light-emitting layers on the first and second anode electrodes;

a cathode electrode on the light-emitting layers;

a second base member on the cathode electrode, the second base member having a first surface facing the first base member;

a first color filter on the first surface of the second base member and overlapping with the first light-emitting area;

a second color filter on the first surface of the second base member and overlapping with the second light-emitting area;

a color pattern on the first surface of the second base member, the color pattern being between the first and second color filters, and overlapping with the non-light-emitting area;

a light-shielding member on the color pattern and overlapping with the non-light-emitting area; and

a first wavelength conversion pattern on the second color filter and comprising a first wavelength shifter,

wherein

the light-emitting layers comprise first, second, and third light-emitting layers overlapping with one another,

the first, second, and third light-emitting layers are to emit light having a peak wavelength of about 440 nm to about 610 nm,

one of the first, second, and third light-emitting layers is to emit light of a first peak wavelength, and

another one of the first, second, and third light-emitting layers is to emit light of a second peak wavelength different from the first peak wavelength.

2. The display device of claim 1 , wherein

the first peak wavelength ranges from 440 nm to 480 nm, and

the second peak wavelength ranges from 510 nm to 550 nm.

3. The display device of claim 1 , wherein

the first peak wavelength ranges from 440 nm to 480 nm, and

the second peak wavelength ranges from 460 nm to 480 nm.

4. The display device of claim 1 , wherein

the light-emitting layers further comprise a fourth light-emitting layer overlapping with the first, second, and third light-emitting layers, and

the fourth light-emitting layer is to emit light having a peak wavelength of 440 nm to 610 nm.

5. The display device of claim 1 , wherein

the first color filter and the color pattern comprise a blue colorant, and

the second color filter comprises another colorant different from the blue colorant.

6. The display device of claim 5 , wherein a thickness of the first color filter is substantially the same as a thickness of the color pattern.

7. The display device of claim 1 , further comprising:

a light-transmitting pattern on the first color filter,

wherein the light-transmitting pattern comprises a base resin and a scatterer in the base resin.

8. The display device of claim 7 , further comprising:

a first capping layer on the first surface of the second base member and covering the first color filter, the second color filter, the color pattern, and the light-shielding member,

wherein

the first capping layer comprises an inorganic material, and

the light-transmitting pattern and the first wavelength conversion pattern are on the first capping layer.

9. The display device of claim 8 , wherein the first capping layer is in direct contact with the light-shielding member.

10. The display device of claim 8 , further comprising:

a second capping layer on the first capping layer and covering the light-transmitting pattern and the first wavelength conversion pattern; and

a color mixing-preventing member on the second capping layer, the color mixing-preventing member being between the light-transmitting pattern and the first wavelength conversion pattern, and comprising a light-shielding material.

11. The display device of claim 8 , further comprising:

a barrier wall between the light-transmitting pattern and the first wavelength conversion pattern; and

a second capping layer on the first capping layer and covering the light-transmitting pattern, the first wavelength conversion pattern, and the barrier wall,

wherein the barrier wall comprises a light-shielding material.

12. The display device of claim 11 , wherein the light-transmitting pattern and the first wavelength conversion pattern are in direct contact with the barrier wall.

13. The display device of claim 1 , further comprising:

a thin-film encapsulation layer on the cathode electrode;

a capping layer on the first wavelength conversion pattern; and

a filler member between the thin-film encapsulation layer and the capping layer,

wherein the capping layer is in direct contact with the filler member.

14. The display device of claim 13 , further comprising:

a panel light-shielding member on the thin-film encapsulation layer, the panel light-shielding member being between the thin-film encapsulation layer and the filler member,

wherein the panel light-shielding member is located in the non-light-emitting area.

15. The display device of claim 1 , further comprising:

a third anode electrode on the first base member and located in a third light-emitting area, wherein the third light-emitting area is further defined on the first base member;

a third color filter on the first surface of the second base member and overlapping with the third light-emitting area; and

a second wavelength conversion pattern on the third color filter and comprising a second wavelength shifter,

wherein

the light-emitting layers are further located on the third anode electrode, and

the third color filter comprises a different colorant from the first and second color filters.

16. The display device of claim 15 , wherein

the color pattern is on the second base member and is further between the second and third color filters, and

the light-shielding member is further located on part of the color pattern located between the second and third color filters.

17. The display device of claim 16 , wherein

the first color filter and the color pattern comprise a blue colorant,

one of the second and third color filters comprises a red colorant, and

one of the second and third color filters comprises a green colorant.

18. The display device of claim 15 , wherein the first and second wavelength shifters comprise quantum dots.

19. A display device comprising:

a base member having a first light-emitting area, a second light-emitting area, and a non-light-emitting area between the first and second light-emitting areas;

a first anode electrode on the base member and located in the first light-emitting area;

a second anode electrode on the base member and located in the second light-emitting area;

light-emitting layers on the first and second anode electrodes;

a cathode electrode on the light-emitting layers;

a thin-film encapsulation layer on the cathode electrode;

a first color filter on the thin-film encapsulation layer and overlapping with the first light-emitting area;

a second color filter on the thin-film encapsulation layer and overlapping with the second light-emitting area;

a color pattern on the thin-film encapsulation layer, the color pattern being between the first and second color filters, and overlapping with the non-light-emitting area;

a light-shielding member on the color pattern and overlapping with the non-light-emitting area;

a light-transmitting pattern between the first color filter and the thin-film encapsulation layer; and

a wavelength conversion pattern between the second color filter and the thin-film encapsulation layer and comprising a wavelength shifter,

wherein

the light-emitting layers comprise first, second, and third light-emitting layers overlapping with one another,

the first, second, and third light-emitting layers are to emit light having a peak wavelength of about 440 nm to about 610 nm,

one of the first, second, and third light-emitting layers is to emit light of a first peak wavelength, and

another one of the first, second, and third light-emitting layers is to emit light of a second peak wavelength different from the first peak wavelength.

20. The display device of claim 19 , wherein the first color filter and the color pattern comprise the same colorant.

21. The display device of claim 19 , further comprising:

a capping layer covering the light-transmitting pattern and the wavelength conversion pattern; and

a color mixing-preventing member on the capping layer and located in the non-light-emitting area,

wherein

the first and second color filters are on the capping layer, and

the color mixing-preventing member is between the capping layer and the color pattern and is in contact with the color pattern.

22. The display device of claim 21 , further comprising:

a panel light-shielding member between the thin-film encapsulation layer and the color mixing-preventing member and located in the non-light-emitting area.

23. The display device of claim 19 , further comprising:

a barrier wall on the thin-film encapsulation layer, the barrier wall being between the light-transmitting pattern and the wavelength conversion pattern; and

a capping layer covering the light-transmitting pattern, the wavelength conversion pattern, and the barrier wall,

wherein the first and second color filters are on the capping layer.

24. The display device of claim 23 , wherein the barrier wall comprises a light-shielding material.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2020
From: LEE, YOUNG HEE; LEE, HYUN SHIK; CHANG, SEUNG WOOK; JEONG, BYOUNG SEONG; PYO, SANG WOO; HWANG, JAE HOON; YOON, JI HWAN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 051580/0195 →
Priority Claims (1)
KR 10-2019-0043835 · Apr 15, 2019 · national
Continuity (1)
Related Publication 20200328256A1 · Oct 15, 2020
Cited By (7)
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