JPH04318522A - Thin film transistor type liquid crystal display device - Google Patents

Thin film transistor type liquid crystal display device

Info

Publication number
JPH04318522A
JPH04318522A JP8553591A JP8553591A JPH04318522A JP H04318522 A JPH04318522 A JP H04318522A JP 8553591 A JP8553591 A JP 8553591A JP 8553591 A JP8553591 A JP 8553591A JP H04318522 A JPH04318522 A JP H04318522A
Authority
JP
Japan
Prior art keywords
liquid crystal
electrode
thin film
film transistor
crystal display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8553591A
Other languages
Japanese (ja)
Inventor
Shigeki Ogura
Tamahiko Nishiki
Yoshiyo Yoshizawa
Original Assignee
Oki Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oki Electric Ind Co Ltd filed Critical Oki Electric Ind Co Ltd
Priority to JP8553591A priority Critical patent/JPH04318522A/en
Publication of JPH04318522A publication Critical patent/JPH04318522A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136218Shield electrodes

Abstract

PURPOSE: To prevent the light leak and deterioration of liquid crystal of a thin film transistor(TFT) type liquid crystal display by eliminating a DC component between a drain electrode and a counter electrode.
CONSTITUTION: A shield electrode 7 is formed on the drain electrode 2 of a TFT across an insulating film. The shield electrode 7 is connected electrically to the counter electrode. Consequently, the shield electrode 7 and counter electrode are disconnected electrically by the shield electrode 6, so no DC component is generated between them. The liquid crystal on the drain electrode, therefore, does not turn ON so no light leak is caused. Further, no DC component is impressed to the liquid crystal, so the liquid crystal does not deteriorates.
COPYRIGHT: (C)1992,JPO&Japio
JP8553591A 1991-04-17 1991-04-17 Thin film transistor type liquid crystal display device Pending JPH04318522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8553591A JPH04318522A (en) 1991-04-17 1991-04-17 Thin film transistor type liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8553591A JPH04318522A (en) 1991-04-17 1991-04-17 Thin film transistor type liquid crystal display device

Publications (1)

Publication Number Publication Date
JPH04318522A true JPH04318522A (en) 1992-11-10

Family

ID=13861577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8553591A Pending JPH04318522A (en) 1991-04-17 1991-04-17 Thin film transistor type liquid crystal display device

Country Status (1)

Country Link
JP (1) JPH04318522A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1008896A1 (en) * 1997-04-11 2000-06-14 Hitachi, Ltd. Liquid crystal display device
US6246453B1 (en) 1996-06-25 2001-06-12 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device
US6590623B2 (en) 1995-07-25 2003-07-08 Hitachi, Ltd. Fabrication method of liquid crystal display device having a reduced number of process steps
US6969643B2 (en) 1995-12-29 2005-11-29 Samsung Electronics Co., Ltd. Thin film transistor array panel used for a liquid crystal display and a manufacturing method thereof
US6975295B2 (en) 2000-11-27 2005-12-13 Hitachi, Ltd. Liquid crystal display device
JP2006209135A (en) * 2005-01-26 2006-08-10 Samsung Electronics Co Ltd Liquid crystal display apparatus
US7110068B2 (en) 2002-07-30 2006-09-19 Hitachi Displays, Ltd. Liquid crystal display device
JP2007193371A (en) * 2007-04-26 2007-08-02 Advanced Display Inc Liquid crystal display device
USRE39798E1 (en) 1993-12-21 2007-08-28 Hitachi, Ltd. Active matrix LCD device with image signal lines having a multilayered structure
JP2011070103A (en) * 2009-09-28 2011-04-07 Casio Computer Co Ltd Liquid crystal display element
CN102169256A (en) * 2011-05-09 2011-08-31 深圳市华星光电技术有限公司 Liquid crystal display, colorful optical filter substrate, thin film transistor substrate and manufacture method thereof

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE39798E1 (en) 1993-12-21 2007-08-28 Hitachi, Ltd. Active matrix LCD device with image signal lines having a multilayered structure
US6590623B2 (en) 1995-07-25 2003-07-08 Hitachi, Ltd. Fabrication method of liquid crystal display device having a reduced number of process steps
US6667778B1 (en) 1995-07-25 2003-12-23 Hitachi, Ltd. Liquid crystal display device having a transparent conductive film formed on an insulating film
US6839106B2 (en) 1995-07-25 2005-01-04 Hitachi, Ltd. Liquid crystal display device and method of making same
US7271870B2 (en) 1995-07-25 2007-09-18 Hitachi, Ltd. Liquid crystal display device and method of making same
US6969643B2 (en) 1995-12-29 2005-11-29 Samsung Electronics Co., Ltd. Thin film transistor array panel used for a liquid crystal display and a manufacturing method thereof
US8023057B2 (en) 1995-12-29 2011-09-20 Samsung Electronics Co., Ltd. Thin film transistor array panel used for liquid crystal display and a manufacturing method thereof
US7623193B2 (en) 1995-12-29 2009-11-24 Samsung Electronics Co., Ltd. Thin film transistor array panel used for a liquid crystal display and a manufacturing method thereof
US6914260B2 (en) 1996-06-25 2005-07-05 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device
US6246453B1 (en) 1996-06-25 2001-06-12 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device
US7821607B2 (en) 1997-04-11 2010-10-26 Hitachi, Ltd. Liquid crystal display device
EP1008896A4 (en) * 1997-04-11 2005-05-18 Hitachi Ltd Liquid crystal display device
EP1008896A1 (en) * 1997-04-11 2000-06-14 Hitachi, Ltd. Liquid crystal display device
US7339564B2 (en) 2000-11-27 2008-03-04 Hitachi, Ltd. Liquid crystal display device
US7986289B2 (en) 2000-11-27 2011-07-26 Hitachi, Ltd. Liquid crystal display device
US6975295B2 (en) 2000-11-27 2005-12-13 Hitachi, Ltd. Liquid crystal display device
US7110068B2 (en) 2002-07-30 2006-09-19 Hitachi Displays, Ltd. Liquid crystal display device
JP2006209135A (en) * 2005-01-26 2006-08-10 Samsung Electronics Co Ltd Liquid crystal display apparatus
US9618803B2 (en) 2005-01-26 2017-04-11 Samsung Display Co., Ltd. Liquid crystal display
US8941789B2 (en) 2005-01-26 2015-01-27 Samsung Display Co., Ltd. Liquid crystal display
JP2007193371A (en) * 2007-04-26 2007-08-02 Advanced Display Inc Liquid crystal display device
JP2011070103A (en) * 2009-09-28 2011-04-07 Casio Computer Co Ltd Liquid crystal display element
CN102169256A (en) * 2011-05-09 2011-08-31 深圳市华星光电技术有限公司 Liquid crystal display, colorful optical filter substrate, thin film transistor substrate and manufacture method thereof
WO2012151792A1 (en) * 2011-05-09 2012-11-15 深圳市华星光电技术有限公司 Liquid crystal display, colorful filter substrate, thin film transistor substrate and manufacturing method thereof

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Legal Events

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Effective date: 19991130