IP Library Granted Patent US 6,882,397
Granted Patent B2
US 6,882,397 · App. 10/621,457 · Granted Apr 19, 2005

Liquid crystal display device

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Quick Facts
Patent No.
US 6,882,397
App. No.
10/621,457
Granted
Apr 19, 2005
Kind
B2
Abstract

The present invention provides a liquid crystal display device which can obviate cutting off of a peripheral region of the liquid crystal display device which is provided with an inspection circuit and can surely perform the inspection of an image display even when the peripheral region is narrowed. On a substrate of the liquid crystal display device, a pixel region which is comprised of a plurality of gate lines and a plurality of drain lines and a peripheral region which surrounds the pixel region are formed. A turn-on inspection terminal of the liquid crystal display device are formed on the peripheral region and a semiconductor chip for driving liquid crystal is formed on the inspection terminal. The semiconductor chip is electrically insulated from the inspection terminal.

Claims (10)

1. A liquid crystal display device comprising a first substrate on which a plurality of gate lines, a plurality of drain lines and a plurality of pixel electrodes are formed, a second substrate which is arranged to face the first substrate in an opposed manner, and a liquid crystal layer disposed between the first substrate and the second substrate, wherein

the first substrate includes a pixel region on which the pixel electrodes are formed and a peripheral region which surrounds the pixel region, and

an inspection terminal is formed on the peripheral region, and a semiconductor chip for driving the liquid crystal is arranged over the inspection terminal such that the semiconductor chip is electrically insulated from the inspection terminal.

2. A liquid crystal display device according to claim 1 , wherein the semiconductor chip is comprised of two semiconductor chips consisting of a drain driver and a gate driver, and the drain driver is arranged over the inspection terminal.

3. A liquid crystal display device according to claim 1 , wherein the inspection terminal includes a drain-line inspection terminal and a gate-line inspection terminal.

4. A liquid crystal display device including a liquid crystal layer between a first substrate and a second substrate, wherein

the first substrate includes a pixel region having pixel electrodes and a peripheral region which surrounds the pixel region,

three drain-line inspection terminals and four gate-line inspection terminals are arranged in the peripheral region, and a semiconductor chip is arranged over the three drain-line inspection terminals and the four gate-line inspection terminals.

5. A liquid crystal display device according to claim 4 , wherein the drain-line inspection terminals include a drain-line inspection terminal for red, a drain-line inspection terminal for green and a drain-line inspection terminal for blue.

6. A liquid crystal display device according to claim 4 , wherein neighboring gate lines are connected to different gate-line inspection terminals.

Assignments (5)
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 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS AND PATENT APPLICATIONS Recorded Dec 12, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027362/0532 →
MERGER/CHANGE OF NAME Recorded Dec 12, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027363/0282 →
MERGER Recorded Jun 23, 2011
From: HITACHI DEVICE ENGINEERING CO., LTD.
To: HITACHI DISPLAYS, LTD.
Reel/Frame 026481/0032 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2003
From: HAYATA, HIROKO; ISHIGE, NOBUYUKI; KOMENO, HITOSHI
To: HITACHI DISPLAYS, LTD.; HITACHI DEVICE ENGINEERING CO., LTD.
Reel/Frame 014306/0399 →