IP Library Granted Patent US 7,561,222
Granted Patent B2
US 7,561,222 · App. 11/298,588 · Granted Jul 14, 2009

Liquid crystal display device and manufacturing method thereof

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Quick Facts
Patent No.
US 7,561,222
App. No.
11/298,588
Granted
Jul 14, 2009
Kind
B2
Abstract

A method to manufacture a liquid crystal display device including the steps of: forming contact holes 400, 401 in signal line-broken end portions 1020, 1021 of a signal line 102 in question with respect to a broken portion 20 lying in the signal line 102 in the condition where a center portion of each contact hole is made to deviate from a center portion of the signal line 102 in the direction of the width thereof; filling the contact holes with tungsten; and forming a tungsten line 50 to cover the tungsten-filled contact holes 500, 501 and the broken portion 20.

Claims (13)

1. A liquid crystal display device, comprising:

a pair of boards;

a liquid crystal material held between the pair of boards;

one of the boards having at least two conductor lines on a primary face thereof;

at least one of the at least two conductor lines having a broken portion between two end portions of the at least one conductor line, and a recessed portion having a two-dimensional shape of a substantial circle in each of said two end portions;

the recessed portion opening to one side of the at least one conductor line in a direction of width thereof, thereby exposing a portion of the at least one conductor line along a periphery of the recessed portion;

an electrical conducting material placed inside the recessed portion and in contact with the exposed portion of the at least one conductor line; and

a conductive bridge member covering the broken portion and an upper end of the electrical conducting material in each of the recessed portions;

wherein a center portion of the recessed portion is located on the at least one conductor line and deviates from a center portion of the at least one conductor line in the direction of the width thereof.

2. The liquid crystal display device of claim 1 , further comprising a plurality of the recessed portions are provided on the conductor line.

3. The liquid crystal display device of claim 1 , wherein the electrical conducting material is tungsten.

4. The liquid crystal display device of claim 1 , wherein a size of the two-dimensional shape of the recessed portion is substantially equal to that of the conductor line in the direction of the width.

5. The liquid crystal display device of claim 1 , wherein the bridge member is made of tungsten.

Assignments (2)
CHANGE OF NAME Recorded Jun 8, 2012
From: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
To: TOSHIBA MOBILE DISPLAY CO., LTD.
Reel/Frame 028339/0273 →
CHANGE OF NAME Recorded Jun 8, 2012
From: TOSHIBA MOBILE DISPLAY CO., LTD.
To: JAPAN DISPLAY CENTRAL INC.
Reel/Frame 028339/0316 →