IP Library Granted Patent US 8,319,719
Granted Patent B2
US 8,319,719 · App. 12/370,931 · Granted Nov 27, 2012

Liquid crystal display device

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 8,319,719
App. No.
12/370,931
Granted
Nov 27, 2012
Kind
B2
Abstract

A liquid crystal display device comprising a liquid crystal display panel 21 having pixels each disposed on an intersection between plural scan lines and plural signal lines, a flexible wiring substrate having mounted thereon a drive IC 24 electrical connected to the liquid crystal display panel 21 for supplying video signals via video signal lines, to one video signal line of which N number of the signal lines are allocated, wherein N is an integer of two or more, an analog switch circuit switch-connected to a signal line selected from the N number of the signal lines in each of the video signal lines, and the control lines 26 formed across a region in which the drive IC 24 has been mounted on the flexible wiring substrate 23 and drawn from a center of the flexible wiring substrate 23 onto the liquid crystal display panel 21 for supplying at least a power source for driving the analog switch circuit or a control signal.

Claims (9)

1. A liquid crystal display device comprising:

a liquid crystal display panel having pixels disposed on intersections between a plurality of scan lines and signal lines;

a flexible wiring substrate having mounted thereon a drive IC electrically connected to the liquid crystal display panel, the drive IC being mounted on the flexible wiring substrate by means of chip-on-film technology and supplying video signals to one of N number of the signal lines allocated to the drive IC, wherein N is an integer of two or more;

an analog switch circuit switch-connected to the one of the N number of the signal lines; and

control lines formed across a region in which the drive IC has been mounted on the flexible wiring substrate, the control lines being insulated from the drive IC and drawn from a center of the flexible wiring substrate onto the liquid crystal display panel for supplying control signal for driving the analog switch circuit,

wherein the control lines comprise two lines, the two lines:

extending in opposite directions from a portion of the liquid crystal display panel corresponding to a central portion of the drive IC, and

ending at opposite end portions of the liquid crystal display panel.

2. A liquid crystal display device according to claim 1 , further comprising scan-line driving circuit lines disposed at opposite sides of the liquid crystal display panel and at opposite sides of the flexible wiring substrate.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 24, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072209/0001 →
MERGER AND CHANGE OF NAME Recorded Jul 2, 2025
From: JAPAN DISPLAY EAST INC.; JAPAN DISPLAY CENTRAL INC.
To: JAPAN DISPLAY INC.
Reel/Frame 071787/0434 →
CHANGE OF NAME Recorded Nov 26, 2012
From: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
To: TOSHIBA MOBILE DISPLAY CO., LTD.
Reel/Frame 029351/0701 →
CHANGE OF NAME Recorded Nov 26, 2012
From: TOSHIBA MOBILE DISPLAY CO., LTD.
To: JAPAN DISPLAY CENTRAL INC.
Reel/Frame 029351/0722 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 30, 2009
From: MATSUMOTO, TOMOHIRO; TSUKAMOTO, TAKAYOSHI
To: TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD.
Reel/Frame 022618/0551 →