JPH02127618A - Liquid crystal display circuit - Google Patents

Liquid crystal display circuit

Info

Publication number
JPH02127618A
JPH02127618A JP28202388A JP28202388A JPH02127618A JP H02127618 A JPH02127618 A JP H02127618A JP 28202388 A JP28202388 A JP 28202388A JP 28202388 A JP28202388 A JP 28202388A JP H02127618 A JPH02127618 A JP H02127618A
Authority
JP
Japan
Prior art keywords
display
liquid crystal
crystal display
frames
circuit
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.)
Granted
Application number
JP28202388A
Other languages
Japanese (ja)
Other versions
JP2734570B2 (en
Inventor
Makoto Kaneko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Corp
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP63282023A priority Critical patent/JP2734570B2/en
Publication of JPH02127618A publication Critical patent/JPH02127618A/en
Application granted granted Critical
Publication of JP2734570B2 publication Critical patent/JP2734570B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a flicker based upon frame time control and to make a gradational display by making the gradational display under both voltage control wherein a driving voltage is varied, frame by frame, and frame time control.
CONSTITUTION: A liquid crystal display device 3 is driven by the liquid crystal display circuit composed of a gradation control circuit 1 and an electrode driving circuit 2. A gradation control circuit 1 controls gradations by varying a voltage VS applied to the electrode driving circuit 2 in three stages (Va1-Va3). Further, the display is made in units of three frames and when the display density is small, only one or two frames are displayed. Consequently, the gradation control is carried out by both the number of display frames and the driving voltage. Consequently, the gradational display is made nearly without generating any flicker.
COPYRIGHT: (C)1990,JPO&Japio
JP63282023A 1988-11-08 1988-11-08 Liquid crystal display circuit Expired - Fee Related JP2734570B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63282023A JP2734570B2 (en) 1988-11-08 1988-11-08 Liquid crystal display circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63282023A JP2734570B2 (en) 1988-11-08 1988-11-08 Liquid crystal display circuit

Publications (2)

Publication Number Publication Date
JPH02127618A true JPH02127618A (en) 1990-05-16
JP2734570B2 JP2734570B2 (en) 1998-03-30

Family

ID=17647160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63282023A Expired - Fee Related JP2734570B2 (en) 1988-11-08 1988-11-08 Liquid crystal display circuit

Country Status (1)

Country Link
JP (1) JP2734570B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020052738A (en) * 2000-12-26 2002-07-04 이구택 Roller stand assembly for preventing the wear of the roller
KR100337406B1 (en) * 1996-10-16 2002-09-18 오끼 덴끼 고오교 가부시끼가이샤 Gray-scale signal generating circuit and liquid crystal display
KR100507668B1 (en) * 2000-12-27 2005-08-10 주식회사 포스코 Roller stand having flowing force
JP2006512609A (en) * 2002-12-27 2006-04-13 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Gradation voltage output device
US7068292B2 (en) 2002-02-14 2006-06-27 Seiko Epson Corporation Display driver circuit, display panel, display device, and display drive method
US8279152B2 (en) 2005-03-23 2012-10-02 Seiko Epson Corporation Electro-optical device and circuit for driving electro-optical device to represent gray scale levels

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453922A (en) * 1977-10-07 1979-04-27 Hitachi Ltd Luminance modulation system of video display unit
JPS63113426A (en) * 1986-09-20 1988-05-18 Emi Plc Thorn Operation of display device and display device itself

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5453922A (en) * 1977-10-07 1979-04-27 Hitachi Ltd Luminance modulation system of video display unit
JPS63113426A (en) * 1986-09-20 1988-05-18 Emi Plc Thorn Operation of display device and display device itself

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100337406B1 (en) * 1996-10-16 2002-09-18 오끼 덴끼 고오교 가부시끼가이샤 Gray-scale signal generating circuit and liquid crystal display
KR20020052738A (en) * 2000-12-26 2002-07-04 이구택 Roller stand assembly for preventing the wear of the roller
KR100507668B1 (en) * 2000-12-27 2005-08-10 주식회사 포스코 Roller stand having flowing force
US7068292B2 (en) 2002-02-14 2006-06-27 Seiko Epson Corporation Display driver circuit, display panel, display device, and display drive method
JP2006512609A (en) * 2002-12-27 2006-04-13 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Gradation voltage output device
US8279152B2 (en) 2005-03-23 2012-10-02 Seiko Epson Corporation Electro-optical device and circuit for driving electro-optical device to represent gray scale levels

Also Published As

Publication number Publication date
JP2734570B2 (en) 1998-03-30

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees