IP Library Granted Patent US 11,705,478
Granted Patent B2
US 11,705,478 · App. 17/179,906 · Granted Jul 18, 2023

Display device

Inventors: Jong Chan Lee (Yongin-si, KR); Jeong Nyun Kim (Yongin-si, KR); Jung Gun Nam (Yongin-si, KR); Sung Geun Bae (Yongin-si, KR); Sung Jin Lee (Yongin-si, KR); Tae Hee Lee (Yongin-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H01L27/156H01L25/0753H01L33/38H01L33/58
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Quick Facts
Patent No.
US 11,705,478
App. No.
17/179,906
Granted
Jul 18, 2023
Kind
B2
Abstract

A display device includes a first pixel including a first light emitting area in which first light emitting elements are arranged, a second pixel including a second light emitting area in which second light emitting elements are arranged, a light blocking pattern disposed on the first and second pixels to overlap a peripheral area of the first and second light emitting areas and including a first opening corresponding to the first light emitting area and a second opening corresponding to the second light emitting area, and a color filter including a first color filter pattern disposed in the first opening and a second color filter pattern disposed in the second opening. The second pixel includes a greater number of second light emitting elements than a number of the first light emitting elements. The second opening has an area smaller than an area of the first opening.

Claims (45)

1. A display device comprising:

at least one first pixel each including a first light emitting area in which first light emitting elements are arranged;

at least one second pixel each including a second light emitting area in which second light emitting elements are arranged;

a light blocking pattern disposed on the at least one first pixel and the at least one second pixel to overlap a peripheral area of the first light emitting area and the second light emitting area, the light blocking pattern including:

a first opening corresponding to the first light emitting area of the at least one first pixel; and

a second opening corresponding to the second light emitting area of the at least one second pixel; and

a color filter including:

a first color filter pattern disposed in the first opening of the light blocking pattern; and

a second color filter pattern disposed in the second opening of the light blocking pattern, wherein

the at least one second pixel includes a greater number of the second light emitting elements than a number of the first light emitting elements of the at least one first pixel, and

the second opening of the light blocking pattern has an area smaller than an area of the first opening of the light blocking pattern.

2. The display device according to claim 1 , wherein

each of the first opening and the second opening of the light blocking pattern has a shape extending along a first direction, and

the second opening of the light blocking pattern has a length shorter than a length of the first opening of the light blocking pattern in the first direction.

3. The display device according to claim 2 , wherein

the first color filter pattern and the second color filter pattern have a same color and have a shape extending along the first direction, and

the second color filter pattern has a length shorter than a length of the first color filter pattern in the first direction.

4. The display device according to claim 1 , wherein the second color filter pattern has an area smaller than an area of the first color filter pattern.

5. The display device according to claim 1 , wherein the first light emitting elements and the second light emitting elements emit light of a same color.

6. The display device according to claim 5 , further comprising:

a first color conversion pattern layer disposed on the at least one first pixel and the at least one second pixel and including first color conversion particles that convert light emitted from the first light emitting elements and the second light emitting elements into light of a first color.

7. The display device according to claim 1 , wherein

the at least one first pixel includes a plurality of first pixels including first light emitting elements arranged in each first light emitting area of the plurality of first pixels; and

the at least one second pixel includes a plurality of second pixels including second light emitting elements arranged in each second light emitting area of the plurality of second pixels.

8. The display device according to claim 7 , wherein

the plurality of first pixels include at least one first color first pixel, at least one second color first pixel, and at least one third color first pixel, and

the plurality of second pixels include at least one first color second pixel, at least one second color second pixel, and at least one third color second pixel.

9. The display device according to claim 8 , wherein

the first color second pixel includes second light emitting elements of a greater number than a number of first light emitting elements arranged in the first color first pixel, and

the light blocking pattern includes an opening of a smaller area on the first color second pixel than an opening of an area on the first color first pixel.

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

at least one pixel block including a plurality of pixels arranged along a second direction,

wherein the at least one pixel block includes:

first pixels disposed at ends of the at least one pixel block; and

second pixels disposed between the first pixels disposed at the ends of the at least one pixel block in the second direction.

11. The display device according to claim 10 , wherein

the at least one pixel block includes a plurality of pixel blocks, and

the display device comprises a display area in which the plurality of pixel blocks are arranged.

12. The display device according to claim 10 , wherein the light blocking pattern comprises:

first openings disposed on each of the first pixels; and

second openings disposed on each of the second pixels and having an area smaller than an area of each of the first openings of the light blocking pattern.

13. The display device according to claim 10 , wherein the color filter comprises:

a first color first color filter pattern disposed on a first color first pixel among the first pixels; and

a first color second color filter pattern disposed on a first color second pixel among the second pixels.

14. The display device according to claim 13 , wherein the first color second color filter pattern has an area smaller than an area of the first color first color filter pattern.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 19, 2021
From: LEE, JONG CHAN; KIM, JEONG NYUN; NAM, JUNG GUN; BAE, SUNG GEUN; LEE, SUNG JIN; LEE, TAE HEE
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 055346/0150 →
Priority Claims (1)
KR 10-2020-0080592 · Jun 30, 2020 · national
Continuity (1)
Related Publication 20210408104A1 · Dec 30, 2021