IP Library Granted Patent US 9,389,471
Granted Patent B2
US 9,389,471 · App. 14/694,345 · Granted Jul 12, 2016

Liquid crystal display device

Inventors: Kenji Anjo (Oamishirasato, JP); Takahiro Nagami (Mobara, JP); Kenichi Hatakeyama (Mobara, JP)
Assignees: Japan Display Inc.; Panasonic Liquid Crystal Display Co., LTD.
G02F1/134336G02F1/1339G02F1/1345G02F1/1368G02F1/13306G02F1/13439G02F1/133345G02F1/133512G02F1/134363G02F1/136209G02F1/136286G02F2001/13456G02F2001/134372G02F2001/136218
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Quick Facts
Patent No.
US 9,389,471
App. No.
14/694,345
Granted
Jul 12, 2016
Kind
B2
Abstract

A liquid crystal display device includes a TFT substrate having a display region with first and second electrodes, TFTs, scanning signal lines connected to the TFTs, a counter substrate, a liquid crystal layer sandwiched between the TFT substrate and counter substrates, and sealed by a sealant, scanning line leads connected to the scanning signal lines and formed outside of the display region, video signal line leads connected to the video signal lines and formed outside of the display region and a shield electrode formed on the TFT substrate covering the scanning line leads but not the video signal line leads. The second electrode is connected to a TFT, and liquid crystal molecules of the liquid crystal layer are driven by an electric field, which is generated between the first and second electrodes. The shield electrode is electrically connected to the first electrode and overlapped with the sealant in plan view.

Claims (10)

1. A display device comprising:

a first substrate;

a second substrate opposite the first substrate, the second substrate including a first electrode having a planar shape, a second electrode over the first electrode, an insulative film between the first electrode and the second electrode, and a display region in which pixels formed with a TFT are arranged in a matrix;

first lines extending in a first direction and arranged in a second direction;

second lines extending in the second direction and arranged in the first direction in the display region;

first line leads configured to connect the first lines with a first line driving circuit outside the display region; and

a third electrode coplanar with the first electrode, the third electrode having a portion extending below a sealant at a periphery of the first substrate and the second substrate and over the first line leads,

wherein

the insulative film is between the third electrode and the sealant, and

the third electrode is arranged such that if a potential is applied to the first electrode, an identical potential is applied to the third electrode.

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 2008-116981 · Apr 28, 2008 · national
Continuity (5)
Continuation 14491416 · Sep 19, 2014
Continuation 14145321 · Dec 31, 2013
Continuation 13569484 · Aug 8, 2012
Continuation 12430973 · Apr 28, 2009
Related Publication 20150227010A1 · Aug 13, 2015