IP Library Granted Patent US 9,482,894
Granted Patent B2
US 9,482,894 · App. 14/289,000 · Granted Nov 1, 2016

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.
G02F1/133514G02F1/133512G02F1/134363G02F2201/52G09G2300/0434G09G2300/0465
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 9,482,894
App. No.
14/289,000
Granted
Nov 1, 2016
Kind
B2
Abstract

A liquid crystal display device includes first and second substrates with liquid crystal sandwiched therebetween. A first blue, a red, a green, and a second blue color filters are disposed between the first substrate and the second substrate, and arranged in a first direction. First to third light blocking films are respectively disposed between the first blue and the red color filters, between the red and the green color filters, and between the green and the second blue color filters. A distance Lr between a first central line of a part of the first light blocking film and a second central line of a width the second light blocking film is larger than a distance Lg between the second central line and a third central line of a width of the third blocking film.

Claims (20)

1. A liquid crystal display device comprising:

a first substrate;

a second substrate;

a liquid crystal layer disposed between the first substrate and the second substrate;

a first red color filter, a green color filter, a blue color filter, and a second red color filter disposed along a first direction;

a first light blocking film disposed on the first red color filter and the green color filter;

a second light blocking film disposed on the green color filter and the blue color filter;

a third light blocking film disposed on the blue color filter and the second red color filter; and

a first drain signal line, a first thin film transistor, and a first pixel electrode formed on the first substrate,

wherein the first light blocking film overlaps the first drain signal line; and

wherein the second light blocking film along the first direction is wider than the first light blocking film along the first direction.

2. The liquid crystal display device according to claim 1 , further comprising a third drain signal line overlapping the third blocking film.

3. The liquid crystal display device according to claim 2 ,

wherein at least a part of the first drain signal line overlaps the first red color filter.

4. The liquid crystal display device according to claim 3 ,

wherein the first blocking film is wider than the first pixel electrode.

5. The liquid crystal display device according to claim 4 ,

wherein the first pixel electrode is disposed in an upper layer compared to the drain line.

6. The liquid crystal display device according to claim 5 , further comprising a common electrode formed on the first substrate.

7. The liquid crystal display device according to claim 6 , further comprising a second drain signal line overlapping the second light blocking film.

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 (4)
Continuation 13792498 · Mar 11, 2013
Continuation 13605195 · Sep 6, 2012
Continuation 12495910 · Jul 1, 2009
Related Publication 20140267963A1 · Sep 18, 2014