IP Library Granted Patent US 10,254,611
Granted Patent B2
US 10,254,611 · App. 15/616,372 · Granted Apr 9, 2019

Display device

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Quick Facts
Patent No.
US 10,254,611
App. No.
15/616,372
Granted
Apr 9, 2019
Kind
B2
Abstract

The present invention is intended to control the color temperature of white exhibited by a liquid crystal display device. White is produced when light waves emitted through pixels associated with three colors of red, green, and blue have maximum intensities. The amounts of light emitted through the respective pixels are controlled by differentiating the shapes of the pixel electrodes disposed at the respective pixels from one another. Thus, the color temperature of white is controlled. Otherwise, the shapes of interceptive films disposed at the respective pixels are differentiated from one another in order to control light waves emitted through the respective pixels. Thus, the color temperature of white is controlled. The interceptive film may be shaped like the pixel electrode. Otherwise, the interceptive film may be realized with an interceptive pattern other than that of the pixel electrode or one of openings bored in a black matrix.

Claims (23)

1. A liquid crystal display panel comprising:

a TFT substrate, a color filter substrate and a liquid crystal material therebetween,

the TFT substrate comprising:

a plurality of image signal lines extending in a first direction, and a plurality of gate signal lines extending in a second direction;

a plurality of pixel regions arranged in a matrix, each one of pixel regions being surrounded by the image signal lines and the gate signal lines, each one of pixel regions including a pixel electrode; and

a common electrode opposite to the pixel electrode;

wherein the plurality of pixel regions includes subgroups of pixel regions, each subgroup having at least two of pixel regions positioned adjacent each other in the second direction including a first pixel region and a second pixel region,

a plurality of slits is formed in the pixel electrode of each pixel region,

a number of the plurality of slits formed in the pixel electrode of the first pixel region is larger than a number of the plurality of slits formed in the pixel electrode of the second pixel region, wherein the first pixel region is a green pixel region and the second pixel region is a red pixel region,

the plurality of slits in the pixel electrode of the first pixel region includes a first slit,

the plurality of slits in the pixel electrode of the second pixel region includes a second slit, and

both of the first slit and the second slit are inclined from the second direction.

2. The liquid crystal display panel of claim 1 , wherein

an angle of the plurality of slits in the pixel electrode of the first pixel region is larger than an angle of the plurality of slits in the pixel electrode of the second pixel region.

3. The liquid crystal display panel of claim 1 , wherein

at least one of the plurality of slits in the pixel electrode has one end merged into the edge of the pixel electrode and left open.

4. The liquid crystal display panel of claim 1 , wherein

both of the first slit and the second slit are inclined from the first direction.

5. The liquid crystal display panel of claim 1 , wherein

the first slit extends in a third direction, the third direction being different from both of the first direction and the second direction, and

the second slit extends in the third direction.

6. The liquid crystal display panel of claim 3 , wherein

the one end is left open toward one of the plurality of signal image lines.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2025
From: JAPAN DISPLAY INC
To: MAGNOLIA PURPLE CORPORATION
Reel/Frame 071890/0202 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 17, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 065615/0327 →
MERGER AND CHANGE OF NAME Recorded Feb 10, 2019
From: IPS ALPHA SUPPORT CO., LTD.; PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 048286/0835 →
CHANGE OF NAME Recorded Feb 10, 2019
From: JAPAN DISPLAY EAST INC.
To: JAPAN DISPLAY INC.
Reel/Frame 048293/0418 →
CHANGE OF NAME Recorded Feb 10, 2019
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST INC.
Reel/Frame 048293/0478 →