Curved display device

Patent metadata

Field	Value
Publication number	US-2016274409-A1
Application number	US-201615013479-A
Country	US
Kind code	A1
Filing date	Feb 2, 2016
Priority date	Mar 18, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

A curved display device includes a first substrate curved along a first direction and comprising pixel areas defined therein, a second substrate coupled to the first substrate and curved together with the first substrate, a liquid crystal layer interposed between the first substrate and the second substrate and comprising liquid crystal molecules, and a light blocking member disposed on the first substrate or the second substrate to block a light, where domains are defined in each of the pixel areas and arranged in a second direction crossing the first direction, the domains are arranged in a matrix form in the pixel areas, and the light blocking member includes a first light blocking layer having a first width and a second light blocking layer having a second width greater than the first width.

First claim

What is claimed is:

1 . A curved display device comprising:
a first substrate curved along a first direction and comprising a plurality of pixel areas defined therein; a second substrate coupled to the first substrate and curved together with the first substrate; a liquid crystal layer interposed between the first substrate and the second substrate and comprising liquid crystal molecules; and a light blocking member which is disposed on the first substrate or the second substrate and blocks a light, wherein a plurality of domains is defined in each of the plurality of pixel areas and arranged in a second direction crossing the first direction, the plurality of domains is arranged in a matrix form in the plurality of pixel areas, and the light blocking member comprises:
a first light blocking layer having a first width and disposed between two domains of the plurality of domains sequentially arranged in a row direction of the matrix and aligning the liquid crystal molecules in a same direction; and
a second light blocking layer having a second width greater than the first width and disposed between two domains of the plurality of domains sequentially arranged in the row direction of the matrix and aligning the liquid crystal molecules in different directions from each other.

2 . The curved display device of claim 1 , wherein each of the first and second light blocking layers extends between two domains of the plurality of domains arranged in the row direction of the matrix.

3 . The curved display device of claim 2 , wherein the row direction of the matrix is substantially parallel to the first direction and a column direction of the matrix is substantially parallel to the second direction.

4 . The curved display device of claim 1 , further comprising:
a pixel electrode which is disposed on the first substrate and corresponds to each pixel area; and a common electrode which is disposed on the second substrate and generates an electric field in cooperation with the pixel electrode, wherein the pixel electrode comprises a plurality of branch portions extending in a direction inclined with respect to the first and second directions when viewed in a plan view.

5 . The curved display device of claim 4 , wherein m first domains and m second domains of the plurality of domains are sequentially arranged in an n-th row of the matrix, where m and n are natural numbers.

6 . The curved display device of claim 5 , wherein the second light blocking layer is disposed between the m first domains and the m second domains.

7 . The curved display device of claim 5 , wherein the first light blocking layer is disposed between two adjacent first domains of the m first domains and the first light blocking layer is disposed between two adjacent second domains of the m second domains.

8 . The curved display device of claim 4 , wherein each of the plurality of pixel areas comprises a first sub-pixel area and a second sub-pixel area, which are arranged in the second direction, and the pixel electrode comprises a first sub-pixel electrode disposed in the first sub-pixel area and a second sub-pixel electrode disposed in the second sub-pixel area.

9 . The curved display device of claim 8 , wherein the first substrate further comprises:
a first data line applying a first data signal; a first thin film transistor which is electrically connected to the first sub-pixel electrode and the first data line, and switches the first data signal applied to the first sub-pixel electrode; a second data line applying a second data signal; and a second thin film transistor which is electrically connected to the second sub-pixel electrode and the second data line, and switches the second data signal applied to the second sub-pixel electrode.

10 . The curved display device of claim 8 , wherein a first domain, a second domain, a third domain, and a fourth domain of the plurality of domains are defined in each of the first and second sub-pixel areas, and alignment directions of the liquid crystal molecules in the first to fourth domains are different from each other.

11 . The curved display device of claim 10 , wherein each of the first and second sub-pixel electrodes comprises:
first branch portions of the plurality of branch portions disposed in the first domain and extending in a direction inclined with respect to the first and second directions when viewed in a plan view; second branch portions of the plurality of branch portions disposed in the second domain and extending in a direction inclined with respect to the first and second directions when viewed in a plan view; third branch portions of the plurality of branch portions disposed in the third domain and extending in a direction inclined with respect to the first and second directions when viewed in a plan view; and fourth branch portions of the plurality of branch portions disposed in the fourth domain and extending in a direction inclined with respect to the first and second directions when viewed in a plan view.

12 . The curved display device of claim 1 , wherein the first substrate and the second substrate comprises a display area curved in the first direction.

13 . The curved display device of claim 12 , wherein the display area comprises a first side area, a center area, and a second side area sequentially arranged along the first direction, a center point of the display area is disposed in the center area, and a width of the second light blocking layer increases as a distance from the first and second side areas decreases.

14 . The curved display device of claim 1 , wherein the light blocking layer comprises a light blocking material.

15 . The curved display device of claim 1 , wherein the light blocking layer comprises a shielding electrode which is disposed on the first substrate and generates an equipotential with the common electrode.

16 . The curved display device of claim 1 , wherein long sides of each of the pixel areas are substantially parallel to the second direction.

17 . The curved display device of claim 1 , wherein long sides of each of the pixel areas are substantially parallel to the first direction.

18 . A curved display device comprising:
a first substrate curved along a first direction and comprising a plurality of pixel areas defined therein; a second substrate coupled to the first substrate and curved together with the first substrate; a liquid crystal layer interposed between the first substrate and the second substrate and comprising liquid crystal molecules; and a light blocking member which is disposed on the first substrate or the second substrate and blocks a light and disposed between two adjacent pixel areas arranged in the first direction of the plurality of pixel areas, wherein each of the plurality of pixel areas comprises a unit domain group defined therein, the unit domain group comprises a plurality of domains arranged in a second direction crossing the first direction, the plurality of domains is arranged in a matrix form in the plurality of pixel areas, and the light blocking member comprises:
a first light blocking layer having a first width and extending between two same unit domain groups of the unit domain groups; and
a second light blocking layer having a second width greater than the first width and extending between two different unit domain groups of the unit domain groups.

19 . The curved display device of claim 18 , wherein the domains defined in the unit domain group align the liquid crystal molecul

Assignees

• Samsung Display Co Ltd

Inventors

• Kang Hyun-Ho
• Seo Osung
• Yu Seungjun
• Yu Hawon
• Youk Kikyung
• Yoon Yeogeon
• Lee Sang-Myoung
• Yim Taekyung

Classifications

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F2001/136218

  Physics · mapped topic

• G02F1/134336

  Matrix · CPC title

• G02F1/13624

  having more than one switching element per pixel · CPC title