JPS54106193A - Driving method for matrix type liquid crystal display unit - Google Patents

Driving method for matrix type liquid crystal display unit

Info

Publication number
JPS54106193A
JPS54106193A JP1376678A JP1376678A JPS54106193A JP S54106193 A JPS54106193 A JP S54106193A JP 1376678 A JP1376678 A JP 1376678A JP 1376678 A JP1376678 A JP 1376678A JP S54106193 A JPS54106193 A JP S54106193A
Authority
JP
Japan
Prior art keywords
positive
negative
liquid crystal
source
voltage
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
JP1376678A
Other languages
Japanese (ja)
Other versions
JPS6051119B2 (en
Inventor
Hirosaku Nonomura
Keiichiro Shimizu
Kohei Kishi
Hisashi Kamiide
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP53013766A priority Critical patent/JPS6051119B2/en
Priority to GB7904352A priority patent/GB2016780B/en
Priority to GB8101865A priority patent/GB2064194B/en
Priority to DE2904596A priority patent/DE2904596C2/en
Priority to DE2953769A priority patent/DE2953769C2/en
Publication of JPS54106193A publication Critical patent/JPS54106193A/en
Priority to US06/229,846 priority patent/US4386352A/en
Publication of JPS6051119B2 publication Critical patent/JPS6051119B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To improve the contrast of display by converting the source voltage applied from the source electrode to the positive and negative pulses with the specified rate of pulse width.
CONSTITUTION: Liquid crystal is activated at esch intersection of source electrode line S1, S2, ... and gate electrode line G1, G2,.... In the unit which forms floating capacity 5 with thin membrane transistor TFT3, source voltage Vsi consisting of a pair of positive and negative pulses is applied to the source line located at i. Ratio of positive width to negative width of pulse width is set in such a way that when TFT is off, charging and discharging is made in the positive and negative directions until the effective voltage becomes O electric potential, thus correcting the difference of characteristics on the positive and negative sides of TFT. When the pulses of gate voltage VGj, VGj+1, VGj+2,... are applied to the gate lines from j to j+2 in conformity with the pulse width of source voltage applied to the liquid crystal, the picture elements from ij to ij+2 are written and the picture element of ij+1 is not written. In such a case, the voltage from other written picture element is not applied to the unwritten picture element, thus improving the contrast of display.
COPYRIGHT: (C)1979,JPO&Japio
JP53013766A 1978-02-08 1978-02-08 Driving method of matrix type liquid crystal display device Expired JPS6051119B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP53013766A JPS6051119B2 (en) 1978-02-08 1978-02-08 Driving method of matrix type liquid crystal display device
GB7904352A GB2016780B (en) 1978-02-08 1979-02-07 Type liquid crystal display
GB8101865A GB2064194B (en) 1978-02-08 1979-02-07 Matrix type liquid crystal display device
DE2904596A DE2904596C2 (en) 1978-02-08 1979-02-07 Liquid crystal display matrix
DE2953769A DE2953769C2 (en) 1978-02-08 1979-02-07 Liquid crystal display matrix with thin film transistor arrangement
US06/229,846 US4386352A (en) 1978-02-08 1981-01-30 Matrix type liquid crystal display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53013766A JPS6051119B2 (en) 1978-02-08 1978-02-08 Driving method of matrix type liquid crystal display device

Publications (2)

Publication Number Publication Date
JPS54106193A true JPS54106193A (en) 1979-08-20
JPS6051119B2 JPS6051119B2 (en) 1985-11-12

Family

ID=11842368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53013766A Expired JPS6051119B2 (en) 1978-02-08 1978-02-08 Driving method of matrix type liquid crystal display device

Country Status (1)

Country Link
JP (1) JPS6051119B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5621193A (en) * 1979-07-30 1981-02-27 Sharp Kk Drive method of liquid crystal display unit
JPS5821863A (en) * 1981-07-31 1983-02-08 Seiko Epson Corp Active matrix substrate
JPS60151615A (en) * 1984-01-19 1985-08-09 Matsushita Electric Ind Co Ltd Driving method of liquid-crystal display device
JPS6156327A (en) * 1984-08-28 1986-03-22 Canon Inc Driving method of display panel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01289719A (en) * 1988-05-17 1989-11-21 Kinugawa Rubber Ind Co Ltd Weather strip
JPH02105019U (en) * 1989-02-06 1990-08-21

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5621193A (en) * 1979-07-30 1981-02-27 Sharp Kk Drive method of liquid crystal display unit
JPS5821863A (en) * 1981-07-31 1983-02-08 Seiko Epson Corp Active matrix substrate
JPH0330308B2 (en) * 1981-07-31 1991-04-26
JPS60151615A (en) * 1984-01-19 1985-08-09 Matsushita Electric Ind Co Ltd Driving method of liquid-crystal display device
JPS6156327A (en) * 1984-08-28 1986-03-22 Canon Inc Driving method of display panel

Also Published As

Publication number Publication date
JPS6051119B2 (en) 1985-11-12

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