IP Library Granted Patent US 8,035,780
Granted Patent B2
US 8,035,780 · App. 13/103,386 · Granted Oct 11, 2011

Liquid crystal display device

Assignee: Hitachi Displays, Ltd.
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Quick Facts
Patent No.
US 8,035,780
App. No.
13/103,386
Granted
Oct 11, 2011
Kind
B2
Abstract

A liquid crystal display device which can prevent the generation of bubbles on an adhesive surface between a liquid crystal display panel and a face plate which protects the liquid crystal display panel is provided. In mounting the face plate on an upper polarizer of the liquid crystal display panel by way of an adhesive material, a picture frame is formed on a periphery of the face plate for enhancing design property. Although the picture frame is formed by printing black ink, a quantity of Si present in the black ink is set to not more than 0.7% and not less than 0.01% thus preventing the generation of bubbles attributed to defective adhesion between the face plate and the adhesive material.

Claims (7)

1. A liquid crystal display device which includes a liquid crystal display panel constituted of a TFT substrate on which pixel electrodes and TFTs which control signals to the pixel electrodes are arranged in a matrix array, and a counter substrate on which color filters corresponding to the pixel electrodes are formed, wherein

an upper polarizer is adhered to the counter substrate, a face plate made of glass is adhered to the upper polarizer, and the upper polarizer and the face plate are adhered to each other using an ultraviolet curing resin, and

a picture-frame-shaped light blocking film is formed on an inner side of the face plate, the light blocking film is formed by printing black ink, and the black ink contains a carbon-hydride-based additive.

2. A liquid crystal display device according to claim 1 , wherein the black ink contains not more than 1.2% and not less than 0.1% of the carbon-hydride-based additive.

3. A liquid crystal display device according to claim 1 , wherein a Si content of the black ink is less than 0.01%.

4. A liquid crystal display device according to claim 1 , wherein the black ink contains carbon black.

5. A liquid crystal display device according to claim 1 , wherein the face plate is made of an acrylic resin.

Assignments (3)
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 2, 2023
From: JAPAN DISPLAY, INC.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA; JAPAN DISPLAY, INC.
Reel/Frame 065437/0733 →
CHANGE OF NAME & ADDRESS Recorded Nov 2, 2023
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY, INC.
Reel/Frame 065518/0001 →
Priority Claims (1)
JP 2008-015181 · Jan 25, 2008 · national
Continuity (2)
Division 12358428 · Jan 23, 2009
Related Publication 20110211136A1 · Sep 1, 2011