IP Library Granted Patent US 8,749,739
Granted Patent B2
US 8,749,739 · App. 13/792,498 · Granted Jun 10, 2014

Liquid crystal display device

Inventors: Takahiro Ochiai (Chiba, JP); Tohru Sasaki (Mobara, JP); Osamu Ito (Hitachi, JP)
Assignees: Japan Display Inc.; Panasonic Liquid Crystal Display Co., Ltd.
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Quick Facts
Patent No.
US 8,749,739
App. No.
13/792,498
Granted
Jun 10, 2014
Kind
B2
Abstract

A display device includes first and second substrates, first and second, red, green and blue color filters, disposed between the first and second substrates, and arranged in a first direction, a first light blocking film disposed between the first red and the green color filters, a second light blocking film disposed between the green and the blue color filters, and a third light blocking film disposed between the blue and the second red color filters, and signal lines, thin film transistors, and pixel electrodes formed on the first substrate. The first, second, and third light blocking films are overlapped with the signal lines. A width of a part of the second light blocking film disposed between the pixel electrodes in the first direction is larger than a width of a part of the first light blocking film disposed between the pixel electrodes in the first direction.

Claims (18)

1. A display device comprising:

a first substrate and a second substrate;

a first red color filter, a green color filter, a blue color filter, and a second red color filter disposed between the first substrate and the second substrate, and arranged in a first direction;

a first light blocking film disposed between the first red color filter and the green color filter, a second light blocking film disposed between the green color filter and the blue color filter, and a third light blocking film disposed between the blue color filter and the second red color filter; and

signal lines, thin film transistors, and pixel electrodes formed on the first substrate;

wherein drain electrodes of the thin film transistors are connected to the signal lines;

wherein the first, second, and third light blocking films are overlapped with the signal lines; and

wherein a width of a part of the second light blocking film disposed between the pixel electrodes in the first direction is larger than a width of a part of the first light blocking film disposed between the pixel electrodes in the first direction.

2. A display device according to claim 1 ,

wherein a width of a part of the third light blocking film disposed between the pixel electrodes in the first direction is larger than the width of the part of the first light blocking film disposed between the pixel electrodes in the first direction.

3. A display device according to claim 2 ,

wherein the width of the part of the third light blocking film disposed between the pixel electrodes in the first direction is larger than the width of the part of the second light blocking film disposed between the pixel electrodes in the first direction.

4. A display device according to claim 1 ,

wherein the first red color filter, the green color filter, the blue color filter, and the second red color filter, and the first light blocking film, the second light blocking film, and the third light blocking film are formed on the second substrate.

5. A display device according to claim 4 ,

wherein a width of a part of the third light blocking film disposed between the pixel electrodes in the first direction is larger than the width of the part of the first light blocking film disposed between the pixel electrodes in the first direction.

6. A display device according to claim 5 ,

wherein the width of the part of the third light blocking film disposed between the pixel electrodes in the first direction is larger than the width of the part of the second light blocking film disposed between the pixel electrodes in the first direction.

Assignments (2)
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 →
Priority Claims (1)
JP 2008-171954 · Jul 1, 2008 · national
Continuity (3)
Continuation 13605195 · Sep 6, 2012
Continuation 12495910 · Jul 1, 2009
Related Publication 20130194531A1 · Aug 1, 2013