IP Library Granted Patent US 8,373,636
Granted Patent B2
US 8,373,636 · App. 13/596,659 · Granted Feb 12, 2013

Driving method for display device

Inventors: Yoshihiro Imajo (Mobara, JP); Tetsuro Izawa (Mobara, JP); Kimitoshi Ohgiichi (Mobara, JP); Hiroshi Okawara (Mobara, JP); Shiro Ueda (Chiba, JP); Nobuyuki Ishige (Shirako, JP); Tetsuya Kawamura (Mobara, JP); Hisashi Ishino (Ohamishirasato, JP); Fumiaki Komori (Ohhara, JP)
Assignees: Hitachi Displays, Ltd.; Panasonic Liquid Crystal Display Co., Ltd.
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Quick Facts
Patent No.
US 8,373,636
App. No.
13/596,659
Granted
Feb 12, 2013
Kind
B2
Abstract

A liquid crystal display includes pixels each having an switching element, drain drivers and gate drivers for operating the switching elements and the pixels, and drain lines and gate lines supplying signals from the drain drivers and the gate drivers to the switching elements being formed on one of a pair of substrates sandwiching a liquid crystal layer. Wiring lines are formed on the one of a pair of substrates for transferring display data signals and a clock signal to the gate drivers.

Claims (36)

1. A liquid crystal display device comprising:

a liquid crystal panel assembled by bonding one of substrates having pixels each being arranged at an intersection between each of a plurality of drain lines and each of a plurality of gate lines intersecting said drain lines, to the other of said substrates having color filters;

a plurality of drain drivers directly mounted to a periphery of said one substrate in an extending direction of said gate lines, for applying gray scale voltage signals to said pixels so arranged as to correspond to predetermined groups of said plurality of drain lines on the basis of display data signals;

a plurality of gate drivers directly mounted to a periphery of said one substrate in an extending direction of said drain lines, for applying scanning voltage signals to said pixels arranged along said drain lines;

drain data lines directly formed on said one substrate, for serially transferring in series said display data signals, said gray scale voltage signals and various high-speed and low-speed clock signals inclusive of pixel clock signals between said drain drivers;

gate data lines directly formed directly on said one substrate, for serially transferring in series said scanning voltage signals and said scanning clock signals between said gate driver, and gate driver power supply lines; and

a flexible printed substrate formed of a drain driver power supply line section and an interface wiring section,

wherein said drain driver power supply line section has only drain driver power supply lines formed thereon along an outer periphery of said drain drivers on said one substrate, and said interface wiring section is arranged at an end of said drain driver power supply line section close to an area at which said gate drivers are arranged and has an extension of said drain driver power supply lines, drain data connecting lines connected to said drain data lines, gate data connecting lines connected to said gate data lines and gate driver power supply connecting lines connected to said gate driver power supply lines.

2. A liquid crystal display device comprising:

a liquid crystal panel assembled by bonding one of substrates having pixels each being arranged at an intersection between each of a plurality of drain lines and each of a plurality of gate lines intersecting said drain lines, to the other of said substrates having color filters;

a plurality of drain drivers directly mounted to a periphery of said one substrate in an extending direction of said gate lines, for applying gray scale voltage signals to said pixels so arranged as to correspond to predetermined groups of said plurality of drain lines on the basis of display data signals;

a plurality of gate drivers directly mounted to a periphery of said one substrate in an extending direction of said drain lines, for applying scanning voltage signals to said pixels arranged along said drain lines;

drain data lines directly formed on said one substrate, for serially transferring in series said display data signals, said gray scale voltage signals and various high-speed and low-speed clock signals inclusive of pixel clock signals between said drain drivers;

gate data lines directly formed directly on said one substrate, for serially transferring in series said scanning voltage signals and said scanning clock signals between said gate drivers, and gate driver power supply lines;

a flexible printed substrate having only drain driver power supply lines formed thereon along the outer periphery of said drain drivers of said one substrate;

drain data connecting lines connected to said drain data lines;

a drain driver power supply relay line formed on said substrate, and having one of the ends thereof connected to said drain diver power supply connecting lines; and

a flexible printed substrate for interface wiring, provided at a side of said one substrate on which said drain drivers are arranged and near to an end thereof for mounting said gate drivers thereon, and having formed thereon drain driver power supply connecting lines connected to another end of said drain driver power supply relay line, gate data connecting lines connected to said gate data lines and a gate driver power supply connecting line connected to said gate driver power supply line.

3. A liquid crystal display device comprising:

a liquid crystal panel assembled by bonding one of substrates having pixels each being arranged at an intersection between each of a plurality of drain lines and each of a plurality of gate lines intersecting said drain lines, to the other of said substrates having color filters;

a plurality of drain drivers directly mounted to a periphery of said one substrate in an extending direction of said gate lines, for applying gray scale voltage signals to said pixels so arranged as to correspond to predetermined groups of said plurality of drain lines on the basis of display data signals;

a plurality of gate drivers directly mounted to a periphery of said one substrate in an extending direction of said drain lines, for applying scanning voltage signals to said pixels arranged along said drain lines;

drain data lines directly formed on said one substrate, for serially transferring in series said display data signals, said gray scale voltage signals and various high-speed and low-speed clock signals inclusive of pixel clock signals between said drain drivers;

gate data lines directly formed directly on said one substrate, for serially transferring in series said scanning voltage signals and said scanning clock signals between said gate drivers, and gate driver power supply lines;

a flexible printed substrate having only drain driver power supply lines formed thereon along an outer periphery of said drain drivers of said one substrate;

drain data connecting lines connected to said drain data lines;

a drain driver power supply relay line formed on said substrate, and having one of the ends thereof connected to said drain diver power supply connecting lines; and

a flexible printed substrate for interface wiring, provided at a side of said substrates on which said gate drivers are arranged and near to an end thereof for mounting said gate drivers thereon, and having formed thereon drain driver power supply connecting lines connected to another end of said drain driver power supply relay line, gate data connecting lines connected to said gate data lines and a gate driver power supply connecting line connected to said gate driver power supply line.

4. A liquid crystal display device comprising:

a liquid crystal panel assembled by bonding one of substrates having pixels each being arranged at an intersection between each of a plurality of drain lines and each of a plurality of gate lines intersecting said drain lines, to the other of said substrates having color filters;

a plurality of drain drivers directly mounted to a periphery of said one substrate in an extending direction of said gate lines, for applying gray scale voltage signals to said pixels so arranged as to correspond to predetermined groups of said plurality of drain lines on the basis of display data signals;

a plurality of gate drivers directly mounted to a periphery of said one substrate in an extending direction of said drain lines, for applying scanning voltage signals to said pixels arranged along said drain lines;

drain data lines directly formed on said one substrate, for serially transferring in series said display data signals, said gray scale voltage signals and various high-speed and low-speed clock signals inclusive of pixel clock signals between said drain drivers;

gate data lines directly formed directly on said one substrate, for serially transferring in series said scanning voltage signals and said scanning clock signals between said gate drivers, and gate driver power supply lines;

a flexible printed substrate having only drain driver power supply lines formed thereon along an outer periphery of said drain drivers of said one substrate; and

a flexible printed substrate for interface wiring, provided at a side of said gate driver of said one substrate, and having formed thereon drain data connecting lines connected to said drain data lines, gate data connecting lines connected to said gate data lines and a gate driver power supply connecting line connected to said gate driver power supply line.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 28, 2012
From: IMAJO, YOSHIHIRO; IZAWA, TETSURO; OHGIICHI, KIMITOSHI; OKAWARA, HIROSHI; UEDA, SHIRO; ISHIGE, NOBUYUKI; KAWAMURA, TETSUYA; ISHINO, HISASHI; KOMORI, FUMIAKI
To: HITACHI, LTD.; HITACHI DEVICE ENGINEERING CO., LTD.
Reel/Frame 028861/0664 →
MERGER Recorded Aug 28, 2012
From: HITACHI DEVICE ENGINEERING CO., LTD.
To: HITACHI DISPLAYS, LTD.
Reel/Frame 028861/0749 →
MERGER Recorded Aug 28, 2012
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 028861/0936 →
COMPANY SPLIT DOCUMENTS Recorded Aug 28, 2012
From: HITACHI, LTD.
To: HITACHI DISPLAYS, LTD.
Reel/Frame 028864/0173 →
COMPANY SPLIT DOCUMENTS WHICH CONVEY 50% OWNERSHIP TO EACH OF THE RECEIVING PARTIES Recorded Aug 28, 2012
From: HITACHI DISPLAYS, LTD.
To: HITACHI DISPLAYS, LTD.; IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 028864/0192 →
Priority Claims (2)
JP 2000-040992 · Feb 18, 2000 · national
JP 2000-141263 · May 15, 2000 · national
Continuity (6)
Continuation 13444122 · Apr 11, 2012
Continuation 12078522 · Apr 1, 2008
Continuation 11283766 · Nov 22, 2005
Continuation 10747450 · Dec 30, 2003
Continuation 09791172 · Feb 13, 2001
Related Publication 20130002734A1 · Jan 3, 2013