IP Library Granted Patent US 7,760,302
Granted Patent B2
US 7,760,302 · App. 11/477,869 · Granted Jul 20, 2010

Display device having common electrode corresponding to a specific pixel electrode in which the area thereof is smaller than the area of other adjoining pixel electrodes and in which that common electrode has a bridging connection

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Quick Facts
Patent No.
US 7,760,302
App. No.
11/477,869
Granted
Jul 20, 2010
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 (15)

1. A liquid crystal display device in which:

first color filters formed in openings bored in a black matrix, second color filters formed in openings bored in the black matrix, and third color filters formed in openings bored in the black matrix are included in a first substrate;

first, second, and third pixel electrodes are formed in association with the respective color filters in a second substrate opposed to the first substrate with a liquid crystal therebetween;

common electrodes are formed on a planar basis to be superimposed on the respective pixel electrodes with an insulating film therebetween;

a plurality of slits is formed in each of the pixel electrodes; and the liquid crystal is controlled with electric fields induced by each of the pixel electrodes and each of the common electrodes in order to produce an image, wherein:

the common electrode corresponding to a specific pixel electrode out of the first, second, and third pixel electrodes is electrically connected to the common electrodes corresponding to respective adjoining pixel electrodes using respective bridging connections; and

the area of the specific pixel electrode defined by the outer margin thereof is smaller than the area of each of the other pixel electrodes defined by the outer margin thereof.

2. A liquid crystal display device in which:

first color filters formed in openings bored in a black matrix, second color filters formed in openings bored in the black matrix, and third color filters formed in openings bored in the black matrix are included in a first substrate;

first, second, and third pixel electrodes are formed in association with the respective color filters in a second substrate opposed to the first substrate with a liquid crystal therebetween;

common electrodes are formed on a planar basis to be superimposed on the respective pixel electrodes with an insulating film therebetween;

a plurality of slits is formed in each of the pixel electrodes;

and the liquid crystal is controlled with electric fields induced by each of the pixel electrodes and each of the common electrodes in order to produce an image, wherein:

the common electrode corresponding to a specific pixel electrode out of the first, second, and third pixel electrodes is electrically connected to the common electrodes corresponding to respective adjoining pixel electrodes using respective bridging connections; and

the common electrode associated with each of the pixel electrodes other than the specific pixel electrode is not connected to the common electrodes corresponding to respective adjoining pixel electrodes using the respective bridging connections.

Assignments (8)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2025
From: JAPAN DISPLAY INC
To: MAGNOLIA PURPLE CORPORATION
Reel/Frame 071890/0202 →
CHANGE OF NAME Recorded Nov 17, 2023
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST, INC.
Reel/Frame 065614/0223 →
CHANGE OF NAME Recorded Nov 17, 2023
From: JAPAN DISPLAY EAST, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065614/0644 →
CHANGE OF ADDRESS Recorded Nov 17, 2023
From: JAPAN DISPLAY, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065654/0250 →
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 Recorded Oct 14, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027063/0139 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS Recorded Oct 14, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027063/0019 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 2, 2006
From: MORI, IKUKO; MOTOOKA, MUNENORI; OKE, RYUTARO; OJIMA, KAZUNORI; ONO, KIKUO
To: HITACHI DISPLAYS LTD.
Reel/Frame 018146/0001 →