Curved display device

Patent metadata

Field	Value
Publication number	US-10254579-B2
Application number	US-201615388423-A
Country	US
Kind code	B2
Filing date	Dec 22, 2016
Priority date	Jul 29, 2016
Publication date	Apr 9, 2019
Grant date	Apr 9, 2019

Abstract

A curved display device includes: first and second substrates having a first panel portion at a center thereof and having second and third panel portions at respective sides of the first panel portion; gate and data lines crossing each other to define a plurality of sub-pixels; a black matrix having a plurality of open portions corresponding to respective ones of the sub-pixels; and first to third color filters between the black matrix and the first substrate. The black matrix between the open portions has first to third black matrix widths in the first to third panel portions, respectively, and the open portion has first to third open portion widths in the first to third panel portions, respectively. Each of the second and third BM widths is equal to or greater than the first black matrix width, and the second and third BM widths are equal to each other.

First claim

What is claimed is:

1. A curved display device, comprising:
first and second substrates facing each other and spaced apart from each other, the first and second substrates having a curved shape, wherein the first and second substrates include a first panel portion at a center thereof, and second and third panel portions at respective sides of the first panel portion;
gate and data lines on an inner surface of the first substrate, the gate and data lines crossing each other to define a plurality of sub-pixels;
a black matrix on an inner surface of the second substrate, the black matrix defining a plurality of openings such that each opening of the plurality of openings corresponds to a respective one of the sub-pixels; and
a plurality of color filters between the black matrix and the first substrate,
wherein the black matrix between respective adjacent openings in the first panel portion has first black matrix widths (BM widths),
wherein the black matrix between respective adjacent openings in the second panel portion has second BM widths,
wherein the black matrix between respective adjacent openings in the third panel portion has third BM widths,
wherein each opening of the plurality of openings in the first panel portion has a first opening width (OP width),
wherein each opening of the plurality of openings in the second panel portion has a second OP width,
wherein each opening of the plurality of openings in the third panel portion has a third OP width,
wherein each of the second and third BM widths is greater than the first BM width,
wherein the second and third BM widths are equal to each other, and
wherein, in the second and third panel portions, a central line of the black matrix between horizontally adjacent openings is disposed closer to the first panel portion than a respective border line between adjacent overlapping ones of the plurality of color filters of different colors.

2. The device of claim 1 , wherein the first to third OP widths are equal to each other.

3. The device of claim 1 , wherein a central line of the black matrix between horizontally adjacent openings coincides with a respective border line between adjacent overlapping ones of the plurality of color filters of different colors in the first panel portion.

4. The device of claim 1 , wherein, in the second and third panel portions, a relative position of the respective central lines with respect to the respective border lines gradually changes in the second and third panel portions.

5. The device of claim 4 , wherein the second panel portion includes first to kth blocks and the third panel portion includes (k+1)th to (n+1)th blocks,
wherein, in the second panel portion, the central line of the black matrix is closer to the first panel portion than the respective border line between the adjacent ones of the plurality of color filters in the first to kth blocks,
wherein the respective central lines of the black matrix in the first to kth blocks become relatively closer to the respective border lines from the first block to the kth block,
wherein, in the third panel portion, the central line of the black matrix is closer to the first panel portion than the respective border line between the adjacent ones of the plurality of color filters in the (k+1)th to (n+1)th blocks, and
wherein the respective central lines of the black matrix in the (k+1)th to (n+1)th blocks become relatively closer to the respective border lines from the (n+1)th block to the (k+1)th block.

6. The device of claim 5 , wherein the second and third panel portions further include a plurality of borders between the first to (n+1)th blocks, and
wherein a width of the black matrix between the openings in each of the plurality of the borders is smaller than a width of the black matrix between the openings in the first to (n+1)th blocks.

7. The device of claim 5 , wherein a number (n+1) of the first to (n+1)th blocks is calculated by determining a value of a maximum shift magnitude between the first and second substrates due to the curved shape divided by a movement magnitude of the relative position of each central line of the black matrix between horizontally adjacent openings with respect to the border line between the adjacent two of the first to third color filters in adjacent two of the first to (n+1)th blocks, as n.

8. The device of claim 5 , wherein each width of the black matrix between horizontally adjacent openings in each of the plurality of borders is determined as a value of a movement magnitude of the relative position of each central line of the black matrix between horizontally adjacent openings with respect to the border line between the adjacent two of the first to third color filters in adjacent two of the first to (n+1)th blocks subtracted from each width of the black matrix between horizontally adjacent openings in the first to (n+1)th blocks.

9. The device of claim 8 , wherein a value of each width of the black matrix between horizontally adjacent openings in the first to (n+1)th blocks divided by each width the black matrix between horizontally adjacent openings in each of the plurality of border portions, is equal to or greater than (0.7/1) and equal to or smaller than (1/0.7).

10. The device of claim 4 , wherein the first and second substrates further include fourth and fifth panel portions on a side of the second and third panel portions, respectively, opposite to the first panel portion,
wherein the black matrix between adjacent openings in the fourth and fifth panel portions has fourth and fifth BM widths, respectively,
wherein each opening in the fourth and fifth panel portions has fourth and fifth OP widths, respectively,
wherein each of the fourth and fifth BM widths is equal to the second BM width, and
wherein the first to fifth OP widths are equal to each other.

11. The device of claim 10 , wherein, in the fourth and fifth panel portions, each central line of the black matrix between horizontally adjacent openings is closer to the first panel portion than a respective border line between the adjacent ones of the plurality of color filters of different colors.

12. The device of claim 1 , wherein the data lines have first to third DL widths in the first to third panel portions, respectively,
wherein each of the second and third DL widths is smaller than the first DL width, and
wherein the second and third DL widths are equal to each other.

13. The device of claim 12 , wherein both sides of each data line coincide with both sides of the black matrix at a location between respective horizontally adjacent openings in the first panel portion, and
wherein one side of each data line coincides with one side of the black matrix at a location between respective horizontally adjacent openings in the second and third panel portions, and
wherein another side of each data line is covered with the black matrix in the second and third panel portions.

14. The device of claim 1 , wherein the first and second substrates have a curved surface of a concave shape toward an upper portion of the second substrate.

15. A curved display device, comprising:
first and second substrates facing each other and spaced apart from each other, the first and second substrates having a curved shape, wherein the first and second substrates include a first panel portion at a center thereof, and second and third panel portions at respective sides of the first panel portion;
gate and data lines on an inner surface of the first substrate, the gate and data lines crossing each other to define a plurality of sub-pixels;
a black matrix on an inner surface of the

Assignees

• Lg Display Co Ltd

Inventors

• Park Jong-Sin
• Park Se-Hong
• Hwang Yi-Yeon

Classifications

• G02F2001/134345

  Physics · mapped topic

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• 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

• G02F2201/56

  Substrates having a particular shape, e.g. non-rectangular · CPC title