IP Library Granted Patent US 9,195,091
Granted Patent B2
US 9,195,091 · App. 13/845,437 · Granted Nov 24, 2015

Liquid crystal display device

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Quick Facts
Patent No.
US 9,195,091
App. No.
13/845,437
Granted
Nov 24, 2015
Kind
B2
Abstract

A liquid crystal display device sandwiching liquid crystal between a TFT substrate having a rectangular plane and an opposing substrate having a rectangular plane, wherein a long side of the TFT substrate is longer than a long side of the opposing substrate, the long side of the opposing substrate is formed with a chamfer, and a light shielding film made of metal is formed on the TFT substrate around a position corresponding to the center of the long side of the opposing substrate. By using the light shielding film, the chipping condition of the opposing substrate near the chamfer can be accurately and rapidly evaluated.

Claims (8)

1. A liquid crystal display device sandwiching liquid crystal between a TFT substrate having a rectangular plane with a TFT and a pixel electrode formed thereon in a matrix form and an opposing substrate having a rectangular plane with a color filter formed thereon,

wherein a long side of the TFT substrate is longer than a long side of the opposing substrate,

the long side of the opposing substrate is chamfered, and

the TFT substrate has a light shielding film made of metal formed thereon around a position corresponding to the center of the long side of the opposing substrate,

wherein in a portion of the opposing substrate corresponding to the light shielding film of the TFT substrate, a size of the light shielding film is between 1.3 mm and 2.6 mm along the long side of the opposing substrate and between 0.1 mm and 0.2 mm along a short side direction of the opposing substrate, and

there is no chip on a top surface of the opposing substrate in a portion formed with the chamfer.

2. The liquid crystal display device according to claim 1 , wherein the light shielding film is covered by sealing material bonding the TFT substrate to the opposing substrate.

3. The liquid crystal display device according to claim 1 , wherein a short side of the opposing substrate is chamfered, and the light shielding film made of metal is formed on the TFT substrate around the position corresponding to the center of the short side of the opposing substrate.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
CHANGE OF NAME Recorded Dec 16, 2014
From: JAPAN DISPLAY EAST INC.
To: JAPAN DISPLAY INC.
Reel/Frame 034642/0290 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 18, 2013
From: TATEMURA, MAKOTO; NAKAMURA, YUICHI; ITAKURA, MASAHARU; OGISHIMA, YOSHITOMO
To: JAPAN DISPLAY EAST INC.
Reel/Frame 030030/0091 →