LCD display panel and color filter substrate

Patent metadata

Field	Value
Publication number	US-9733509-B2
Application number	US-201514819951-A
Country	US
Kind code	B2
Filing date	Aug 6, 2015
Priority date	Aug 6, 2015
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

A display panel has an active region, a peripheral region, and includes active device array substrate, color filter substrate, spacers, and display medium. The active device array substrate includes first substrate and active device array layer. The color filter substrate includes second substrate, black matrix layer, overcoat layer, and color filter layer. The color filter layer includes color filter patterns in the active region and dummy color filter patterns in the peripheral region. The color filter patterns and the dummy color filter patterns define blank areas outside areas of the color filter patterns and the dummy color filter patterns arranged in a first direction. The blank areas include first blank areas in the active region and second blank areas in the peripheral region and the first blank area has a width different from at least one of the second blank areas in the first direction.

First claim

What is claimed is:

1. A display panel, having an active region and a peripheral region, comprising:
an active device array substrate, comprising:
a first substrate; and
an active device array layer disposed on the first substrate;
a color filter substrate, comprising:
a second substrate disposed opposite to the first substrate;
a black matrix layer disposed on the second substrate;
an overcoat layer disposed on the black matrix layer; and
a color filter layer located between the black matrix layer and the overcoat layer, the color filter layer comprising a plurality of color filter patterns disposed in the active region and a plurality of dummy color filter patterns disposed in the peripheral region and overlapped with the black matrix layer, wherein the plurality of color filter patterns and the plurality of dummy color filter patterns define a plurality of blank areas outside areas of the plurality of color filter patterns and the plurality of dummy color filter patterns, at least part of the plurality of blank areas is arranged in a first direction, the plurality of blank areas comprises a plurality of first blank areas in the active region and a plurality of second blank areas in the peripheral region, and the plurality of first blank area has a width different from at least one of the plurality of second blank areas in the first direction;
a plurality of spacers disposed on the color filter substrate and a portion of the plurality of spacers propping against the active device array substrate, wherein the plurality of spacers comprises a plurality of first spacers and a plurality of second spacers, and a height of the plurality of first spacers is smaller than a height of the plurality of second spacers, at least part of the plurality of first spacers is located in the active region and at least part of the plurality of first spacers is located in the peripheral region, at least part of the plurality of second spacers is located in the active region and at least part of the plurality of second spacers is located in the peripheral region, the at least part of the plurality of first spacers in the peripheral region is disposed over the plurality of dummy color filter patterns, the at least part of the plurality of second spacers in the peripheral region is disposed within the plurality of second blank areas, and the plurality of first spacers is separated from the plurality of second spacers; and
a display medium located between the active device array substrate and the color filter substrate,
wherein the at least part of the plurality of second spacers in the peripheral region keeps a distance from the active device array layer, the at least part of the plurality of second spacers in the active region contacts the active device array layer, the at least part of the plurality of first spacers in the peripheral region contacts the active device array substrate, and the at least part of the plurality of first spacers in the active region keeps a distance from the active device array substrate.

2. The display panel according to claim 1 , wherein the plurality of color filter patterns and the plurality of dummy color filter patterns define the plurality of blank areas outside areas of the plurality of color filter patterns and the plurality of dummy color filter patterns, at least part of the plurality of blank areas is arranged in a second direction, and the first direction is perpendicular to the second direction.

3. The display panel according to claim 2 , wherein a long side of each of the plurality of color filter patterns is extending along the first direction, a short side of each of the plurality of color filter patterns is extending along the second direction, a long side of each of the plurality of dummy color filter patterns is extending along the first direction, and a short side of each of the plurality of dummy color filter patterns is extending along the second direction.

4. The display panel according to claim 3 , wherein a length of the long side of each of the plurality of color filter patterns is L, a distance between two adjacent color filter patterns along the first direction is D1, and a distance between at least two adjacent dummy color filter patterns in the first direction is equal to L+2D1.

5. The display panel according to claim 3 , wherein a width of the short side of each of the plurality of color filter patterns is W, a distance between two adjacent color filter patterns along the second direction is D2, a distance between at least two adjacent dummy color filter patterns in the second direction is equal to W+2D2, and the first direction is perpendicular to the second direction.

6. The display panel according to claim 1 , wherein the peripheral region is divided into an inner peripheral region and an outer peripheral region, the inner peripheral region is located between the active region and the outer peripheral region, the plurality of dummy color filter patterns is located in the inner peripheral region, and the display panel further comprises a sealant located in the outer peripheral region and located between the first substrate and the second substrate.

7. The display panel according to claim 1 , wherein a top surface of the overcoat layer over the plurality of dummy color filter patterns has a first height from the second substrate, a top surface of the overcoat layer over the plurality of second blank areas has a second height from the second substrate, and the first height is greater than the second height.

8. The display panel according to claim 1 , wherein the at least part of the plurality of first spacers in the peripheral region props against the active device array substrate and the at least part of the plurality of second spacers in the active region props against the active device array substrate.

9. The display panel according to claim 1 , wherein the plurality of dummy color filter patterns is arranged in a checkerboard manner in the peripheral region.

10. The display panel according to claim 1 , wherein the plurality of dummy color filter patterns is arranged in a random manner in the peripheral region.

Assignees

• Chunghwa Picture Tubes Ltd

Inventors

• Yu Tai-Ching

Classifications

• G02F1/133512

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

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F2001/133519

  Physics · mapped topic

• G02F1/167

  by electrophoresis · CPC title