IP Library Granted Patent US 8,451,409
Granted Patent B2
US 8,451,409 · App. 13/592,973 · Granted May 28, 2013

Liquid crystal display device and manufacturing method for same

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,451,409
App. No.
13/592,973
Granted
May 28, 2013
Kind
B2
Abstract

A liquid crystal display device includes a first substrate, a second substrate, liquid crystal disposed between the first substrate and the second substrate, an electrode formed over the first substrate, and an alignment film disposed between the electrode and the liquid crystal. The electrode has a pad portion that protrudes from at least part of a side of the electrode and electrically leads out onto the first substrate through a conductive material that is located between the second substrate and the first substrate, and a direction in which at least one side of the pad portion which protrudes from the electrode is set to angle of 15° or more and 35° or less relative to a side of the first substrate which crosses the extended line of the at least one side of the pad portion.

Claims (20)

1. A liquid crystal display device comprising:

a first substrate and a second substrate that is positioned to face the first substrate with liquid crystal therebetween;

pixel electrodes that are formed in an image display region, and a first alignment film that is formed over the pixel electrodes; and

a counter electrode that is formed on the second substrate, and a second alignment film that is formed over the counter electrode;

wherein the counter electrode is provided with a pad portion that protrudes from at least part of a side of the counter electrode and electrically leads out onto one of the first substrate and the second substrate through a conductive material that is located between the second substrate and the first substrate; and

wherein a direction in which two sides of the pad portion which protrudes from the counter electrode extend is set to angle of 15° or more and 35° or less relative to a side of the second substrate which crosses an extended line of one of the two sides of the pad portion.

2. The liquid crystal display device according to claim 1 , wherein the pad portion of the counter electrode is formed in a corner of the counter electrode.

3. The liquid crystal display device according to claim 2 , wherein a pair of the pad portions is formed at diagonally opposite corners of the counter electrode.

4. The liquid crystal display device according to claim 1 , wherein the counter electrode and the pad portion are formed of a transparent conductive film.

5. A liquid crystal display device comprising:

a first substrate;

a second substrate;

liquid crystal disposed between the first substrate and the second substrate;

an electrode formed over the first substrate; and

an alignment film disposed between the electrode and the liquid crystal;

wherein the electrode has a pad portion that protrudes from at least part of a side of the electrode and electrically leads out onto the first substrate through a conductive material that is located between the second substrate and the first substrate; and

wherein a direction in which at least one side of the pad portion which protrudes from the electrode is set to angle of 15° or more and 35° or less relative to a side of the first substrate which crosses the extended line of the at least one side of the pad portion.

6. The liquid crystal display device according to claim 5 , wherein the pad portion of the electrode is formed in a corner of the electrode.

7. The liquid crystal display device according to claim 6 , wherein a pair of the pad portions is formed at diagonally opposite corners of the electrode.

8. The liquid crystal display device according to claim 5 , wherein the electrode and the pad portion are formed of a transparent conductive film.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2025
From: JAPAN DISPLAY INC
To: MAGNOLIA PURPLE CORPORATION
Reel/Frame 071890/0202 →
CHANGE OF NAME Recorded Nov 17, 2023
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST, INC.
Reel/Frame 065614/0223 →
CHANGE OF NAME Recorded Nov 17, 2023
From: JAPAN DISPLAY EAST, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065614/0644 →
CHANGE OF ADDRESS Recorded Nov 17, 2023
From: JAPAN DISPLAY, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065654/0250 →
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 →