IP Library › Granted Patent US 10,197,861
Granted Patent B1
US 10,197,861 · App. 15/871,447 · Granted Feb 5, 2019

Liquid crystal display

Inventors: Kwang Soo Bae (Suwon-si, KR); Sung Man Kim (Seoul, KR); Jung Suk Bang (Seoul, KR); Min Jeong Oh (Gimpo-si, KR); Bo Ram Lee (Seongnam-si, KR)
Assignee: Samsung Display Co., Ltd.
G02F1/133711G02F1/1343G02F1/133512
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Quick Facts
Patent No.
US 10,197,861
App. No.
15/871,447
Granted
Feb 5, 2019
Kind
B1
Abstract

A liquid crystal display device includes a first substrate (FS) on which pixel regions are defined, a second substrate (SS) facing the FS, an alignment film disposed on a surface of the FS facing the SS, a wavelength conversion layer disposed on a surface of the SS facing the FS, a transmissive layer disposed on the surface of SS, a common electrode disposed on surfaces of the wavelength conversion layer and the transmissive layer facing the FS, a light-blocking member disposed on a surface of the common electrode facing the FS, and a liquid crystal layer between the alignment film and the light-blocking member. Each pixel region among the pixel regions includes: a pixel electrode disposed on the surface of the FS; an opening region in the light-blocking member; and a pixel overlap region outside the opening region, the pixel electrode overlapping the light-blocking member in the pixel overlap region.

Claims (50)

1. A liquid crystal display (LCD) comprising:

a first substrate on which pixel regions are defined;

a second substrate facing the first substrate;

an alignment film disposed on a surface of the first substrate that faces the second substrate;

a wavelength conversion layer disposed on a surface of the second substrate that faces the first substrate;

a transmissive layer disposed on the surface of the second substrate;

a common electrode disposed on surfaces of the wavelength conversion layer and the transmissive layer that face the first substrate;

a light-blocking member disposed on a surface of the common electrode that faces the first substrate; and

a liquid crystal layer disposed between the alignment film and the light-blocking member,

wherein each pixel region among the pixel regions comprises:

a pixel electrode disposed on the surface of the first substrate;

an opening region in the light-blocking member; and

a pixel overlap region outside the opening region, the pixel electrode overlapping the light-blocking member in the pixel overlap region.

2. The LCD of claim 1 , wherein the pixel overlap region is adjacent to a first side of the opening region.

3. The LCD of claim 2 , wherein the pixel electrode comprises:

a surface electrode; and

an edge electrode adjacent to a second side of the opening region, the second side being different from the first side.

4. The LCD of claim 3 , wherein the opening region overlaps a portion of the surface electrode.

5. The LCD of claim 4 , wherein the alignment film is aligned in a direction extending diagonally between the second side and the first side.

6. The LCD of claim 3 , wherein the edge electrode extends along the second side and a third side extending between the first side and the second side.

7. The LCD of claim 3 , wherein a portion of the surface electrode overlaps the light-blocking member in the pixel overlap region.

8. The LCD of claim 3 , wherein a portion of the surface electrode is connected to the edge electrode in the pixel overlap region.

9. The LCD of claim 1 , wherein the light-blocking member protrudes within the liquid crystal layer toward the first substrate.

10. The LCD of claim 9 , wherein side walls of the light-blocking member are slopped with respect to a surface of the first substrate that faces the second substrate.

11. The LCD of claim 1 , wherein a surface of the alignment film is rubbed along an alignment direction.

12. The LCD of claim 1 , wherein the common electrode comprises a slit pattern defining an opening in the common electrode, the slit pattern being adjacent to a head-end of an alignment direction of the alignment film.

13. The LCD of claim 1 , wherein the wavelength conversion layer comprises quantum dots or a phosphor.

14. The LCD of claim 13 , wherein the wavelength conversion layer comprises:

a first wavelength conversion layer configured to convert light of a first wavelength region into light of a second wavelength region different from the first wavelength region; and

a second wavelength conversion layer configured to convert light of the first wavelength region into light of a third wavelength region different from the first wavelength region and the second wavelength region.

15. The LCD of claim 14 , wherein the transmissive layer is configured to transmit light of the first wavelength region.

16. A liquid crystal display (LCD) comprising:

a first substrate on which pixel regions are defined;

a second substrate facing the first substrate;

an alignment film disposed on a surface of the first substrate that faces the second substrate;

a wavelength conversion layer disposed on a surface of the second substrate that faces the first substrate;

a transmissive layer disposed on the surface of the second substrate;

a common electrode disposed on surfaces of the wavelength conversion layer and the transmissive layer that face the first substrate;

a liquid crystal layer disposed between the alignment film and the common electrode; and

a light-blocking member disposed between the first substrate and the second substrate,

wherein each pixel region among the pixel regions comprises:

a pixel electrode disposed on the first substrate; and

an opening region in the light-blocking member, and

wherein the common electrode comprises a slit pattern defining an opening in the common electrode, the slit pattern being adjacent to a first side of the opening region.

17. The LCD of claim 16 , wherein the pixel electrode comprises:

a surface electrode; and

an edge electrode adjacent to a second side of the opening region, the second side being different from the first side.

18. The LCD of claim 17 , the opening region overlaps a portion of the surface electrode.

19. The LCD of claim 18 , wherein the alignment film is aligned in a direction extending diagonally between the second side and the first side.

20. The LCD of claim 16 , wherein the wavelength conversion layer comprises quantum dots or a phosphor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 15, 2018
From: BAE, KWANG SOO; KIM, SUNG MAN; BANG, JUNG SUK; OH, MIN JEONG; LEE, BO RAM
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 044622/0090 →
Priority Claims (1)
KR 10-2017-0094396 · Jul 25, 2017 · national
Cited By (1)
US 12,532,788