JPS6444993A - Aging of active matrix type liquid crystal display device - Google Patents

Aging of active matrix type liquid crystal display device

Info

Publication number
JPS6444993A
JPS6444993A JP62200874A JP20087487A JPS6444993A JP S6444993 A JPS6444993 A JP S6444993A JP 62200874 A JP62200874 A JP 62200874A JP 20087487 A JP20087487 A JP 20087487A JP S6444993 A JPS6444993 A JP S6444993A
Authority
JP
Japan
Prior art keywords
voltage
ageing
tft1
threshold voltage
duty
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
JP62200874A
Other languages
Japanese (ja)
Inventor
Kazuhiro Takahara
Shintarou Kisumi
Takayuki Hoshiya
Kenichi Oki
Tetsuya Hamada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62200874A priority Critical patent/JPS6444993A/en
Publication of JPS6444993A publication Critical patent/JPS6444993A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the quality of display by impressing an ageing voltage of which polarity, peak value and duty are selected correspodingly to the threshold voltage of a thin film field effect transistor(TFT). CONSTITUTION: An ageing voltage selecting at least one of polarity, a peak value and duty is selected correspondingly to the threshold voltage of the TFT1 is impressed from a power supply 4 to a node between the gate G and drain D of the TFT1 and the ageing voltage is also impressed in each group of a scanning bus line 2 divided into plural groups. Ageing voltage between groups is selected so as to generate a difference corresponding to the selected polarity, peak value or duty and the impression time of impression repeating frequency of the ageing voltage is selected so as to uniform the threshold voltage of the TFT1 to execute ageing. Thereby the threshold voltage of the TFT1 can be uniformed and required ageing voltage can be obtained between both scanning bus line groups. Consequently, the quality of display can be improved.
JP62200874A 1987-08-13 1987-08-13 Aging of active matrix type liquid crystal display device Pending JPS6444993A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62200874A JPS6444993A (en) 1987-08-13 1987-08-13 Aging of active matrix type liquid crystal display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62200874A JPS6444993A (en) 1987-08-13 1987-08-13 Aging of active matrix type liquid crystal display device

Publications (1)

Publication Number Publication Date
JPS6444993A true JPS6444993A (en) 1989-02-17

Family

ID=16431671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62200874A Pending JPS6444993A (en) 1987-08-13 1987-08-13 Aging of active matrix type liquid crystal display device

Country Status (1)

Country Link
JP (1) JPS6444993A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005043882A (en) * 2003-07-10 2005-02-17 Semiconductor Energy Lab Co Ltd Display device and its driving method
JP2010153126A (en) * 2008-12-24 2010-07-08 Kyocera Corp Method for manufacturing organic el display

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005043882A (en) * 2003-07-10 2005-02-17 Semiconductor Energy Lab Co Ltd Display device and its driving method
JP2010153126A (en) * 2008-12-24 2010-07-08 Kyocera Corp Method for manufacturing organic el display

Similar Documents

Publication Publication Date Title
US4455576A (en) Picture display device
DE69507289D1 (en) ELECTROCHEMICAL DENATUSING OF DOUBLE-STRANDED NUCLEIC ACID
KR950019867A (en) Liquid crystal display device
KR930008706A (en) Display method of electro-optical device
KR980003691A (en) Display
DE69314921T2 (en) Liquid crystal display device
DE69225199D1 (en) Liquid crystal display device
KR880700589A (en) Liquid crystal display
JPS6463995A (en) Electroluminescent display system and reduction in residual dc voltage working on pixel thereby
DE3886838T2 (en) Display device and method for controlling such a display device.
JPS54155795A (en) Electro-optical display unit
JPS54108595A (en) Driving method of matrix type liquid-crystal display unit
JPS55137583A (en) Liquid crystal display unit drive system
JPH04136893A (en) Addressing of matrix type lcd panel
ATE151190T1 (en) LIQUID CRYSTAL DEVICE AND METHOD FOR CONTROLLING SAME DEVICE
JPS6444993A (en) Aging of active matrix type liquid crystal display device
KR960038725A (en) Liquid crystal driving device
DE69120564D1 (en) Method for driving a ferroelectric liquid crystal element and ferroelectric liquid crystal display
JPS6452128A (en) Active device
DE69219644T2 (en) Liquid crystal display device
JPS6433534A (en) Display device and driving thereof
KR910008634A (en) Display control device
TW334552B (en) Method for driving of nematic liquid crystal
CH628200B (en) POWER SUPPLY AND CONTROL PROCESS OF ELECTROCHROMIC DISPLAY CELLS.
KR960025304A (en) Driving method of display device