Curved liquid crystal display panel

Patent metadata

Field	Value
Publication number	US-9964821-B2
Application number	US-201514908541-A
Country	US
Kind code	B2
Filing date	Dec 28, 2015
Priority date	Oct 10, 2015
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

The present invention provides a curved liquid crystal display panel. In the curved liquid crystal display panel of the present invention, a TFT substrate is provided thereon with a black matrix corresponding to a trunk portion of a pixel electrode such that portions of the sub-pixels within two opposite side zones of the curved liquid crystal display panel that generate dark patterns and portions of the sub-pixels within a central zone of the curved liquid crystal display panel having the same width as that of the dark patterns are shielded, whereby through sacrifice of a portion of aperture ratio, the brightness of the curved liquid crystal display panel is made homogenized through all areas thereof thereby preventing brightness difference between the central zone and two opposite side zones of the curved liquid crystal display panel.

First claim

What is claimed is:

1. A curved liquid crystal display panel, which is formed by curving a liquid crystal display panel, the liquid crystal display panel comprising a thin-film transistor (TFT) substrate, a color filter (CF) substrate opposite to the TFT substrate, and a liquid crystal layer arranged between the TFT substrate and the CF substrate;
the TFT substrate comprising a first base plate, a first black matrix formed on the first base plate, a light-shielding metal frame formed on the first base plate and the first black matrix, an insulation layer formed on the first base plate and covering the light-shielding metal frame, and a plurality of data lines, a plurality of gate scan lines, and a pixel electrode layer formed on the insulation layer;
the plurality of data lines and the plurality of gate scan lines circumferentially delimiting and defining a plurality of sub-pixel zones, the light-shielding metal frame being respectively arranged in the plurality of sub-pixel zones, the pixel electrode layer comprising a pixel electrode corresponding to each of the sub-pixel zones, the pixel electrode comprising a multi-domain structure, the multi-domain structure comprising a trunk portion and branch portions, the first black matrix comprising a black light-shielding strip corresponding to each of the sub-pixel zones;
wherein when the liquid crystal display panel is in a planar state, the black light-shielding strip is located under the trunk portion of the pixel electrode and the black light-shielding strip has a width that is less than or equal to a width of the trunk portion;
wherein when the liquid crystal display panel is in a curved state, in two opposite side zones of the curved liquid crystal display panel, the CF substrate is sideways shifted with respect to the TFT substrate such that a dark pattern zone is generated at a location above one side of the trunk portion of the pixel electrode and the black light-shielding strip shields the dark pattern zone; and in a central zone of the curved liquid crystal display panel, the black light-shielding strip shields a portion of a normal zone having the same width as that of the dark pattern zone, whereby brightness of the curved liquid crystal display panel is made homogenized;
the CF substrate comprising a second base plate and a color resist layer formed on the second base plate.

2. The curved liquid crystal display panel as claimed in claim 1 , wherein the light-shielding metal frame comprises a first light-shielding section located under the trunk portion and a second light-shielding section located on a circumference of the sub-pixel zone, the first light-shielding section having a width that is less than the width of the trunk portion.

3. The curved liquid crystal display panel as claimed in claim 2 , wherein the width of the black light-shielding strip is substantially equal to the width of the trunk portion.

4. The curved liquid crystal display panel as claimed in claim 3 , wherein in the planar state, the black light-shielding strip is located exactly under the trunk portion and two opposite ends of the black light-shielding strip are respectively in alignment with two ends of the trunk portion.

5. The curved liquid crystal display panel as claimed in claim 3 , wherein the first base plate comprises a groove formed therein and the first black matrix is arranged in the groove.

6. The curved liquid crystal display panel as claimed in claim 2 , wherein the width of the black light-shielding strip is less than the width of the trunk portion.

7. The curved liquid crystal display panel as claimed in claim 6 , wherein the curved liquid crystal display panel is divided into a left portion and a right portion according to a direction in which the CF substrate shifts with respect to the TFT substrate in the curved state;
wherein in the planar state, in the left portion of the liquid crystal display panel, in a vertical direction, a left end of the black light-shielding strip is in alignment with a left end of the first light-shielding section and a right end of the black light-shielding strip is in alignment with a right end of the trunk portion; and in the right portion of the liquid crystal display panel, in the vertical direction, a right end of the black light-shielding strip is in alignment with a right end of the first light-shielding section and a left end of the black light-shielding strip is in alignment with a left end of the trunk portion; and
wherein in the curved state, in the left portion of the liquid crystal display panel, in the vertical direction, a left side portion of the black light-shielding strip shields the dark pattern zone, and in the right portion of the liquid crystal display panel, in the vertical direction, a right side portion of the black light-shielding strip shields the dark pattern zone.

8. The curved liquid crystal display panel as claimed in claim 6 , wherein the first base plate comprises a groove formed therein and the first black matrix is arranged in the groove.

9. The curved liquid crystal display panel as claimed in claim 1 , wherein the CF substrate further comprises a second black matrix formed on the second base plate and the second black matrix is arranged to correspond to edges of the sub-pixel zone.

10. The curved liquid crystal display panel as claimed in claim 1 , wherein the TFT substrate further comprises a second black matrix formed on the first base plate and the second black matrix and the first black matrix are formed through the same manufacturing process.

11. The curved liquid crystal display panel as claimed in claim 10 , wherein the first base plate comprises grooves formed therein and the first black matrix and the second black matrix are arranged in the grooves.

12. A curved liquid crystal display panel, which is formed by curving a liquid crystal display panel, the liquid crystal display panel comprising a thin-film transistor (TFT) substrate, a color filter (CF) substrate opposite to the TFT substrate, and a liquid crystal layer arranged between the TFT substrate and the CF substrate;
the TFT substrate comprising a first base plate, a first black matrix formed on the first base plate, a light-shielding metal frame formed on the first base plate and the first black matrix, an insulation layer formed on the first base plate and covering the light-shielding metal frame, and a plurality of data lines, a plurality of gate scan lines, and a pixel electrode layer formed on the insulation layer;
the plurality of data lines and the plurality of gate scan lines circumferentially delimiting and defining a plurality of sub-pixel zones, the light-shielding metal frame being respectively arranged in the plurality of sub-pixel zones, the pixel electrode layer comprising a pixel electrode corresponding to each of the sub-pixel zones, the pixel electrode comprising a multi-domain structure, the multi-domain structure comprising a trunk portion and branch portions, the first black matrix comprising a black light-shielding strip corresponding to each of the sub-pixel zones;
wherein when the liquid crystal display panel is in a planar state, the black light-shielding strip is located under the trunk portion of the pixel electrode and the black light-shielding strip has a width that is less than or equal to a width of the trunk portion;
wherein when the liquid crystal display panel is in a curved state, in two opposite side zones of the curved liquid crystal display panel, the CF substrate is sideways shifted with respect to the TFT substrate such that a dark pattern zone is generated at a location above one side of the trunk portion of the pixel electrode and the black light-shielding strip

Assignees

• Shenzhen China Star Optoelect

Inventors

• Wu Chuan

Classifications

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/136286

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

• G02F2001/134345

  Physics · mapped topic

• G02F1/133512 Primary

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

• G02F2201/123

  pixel · CPC title