JPS54108595A - Driving method of matrix type liquid-crystal display unit - Google Patents
Driving method of matrix type liquid-crystal display unitInfo
- Publication number
- JPS54108595A JPS54108595A JP1558378A JP1558378A JPS54108595A JP S54108595 A JPS54108595 A JP S54108595A JP 1558378 A JP1558378 A JP 1558378A JP 1558378 A JP1558378 A JP 1558378A JP S54108595 A JPS54108595 A JP S54108595A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- positive
- zero
- gate
- source
- 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
Links
Abstract
PURPOSE: To obtain an excellent contrast unit with liquid crystal long in life, by applying a voltage, which has positive and negative pulse-zero voltage periods, to a source line and by separately applying a common voltage corresponding to scanning lines of a gate line.
CONSTITUTION: At intersections between several source lines 1 and several gate lines 2, thin-film transistors TFT3 are formed and liquid-crystal bodies 4 are held between striped common electrode 31 and TFTs 3, thereby obtaining a unit using bodies 4 as picture elements. In this unit, when picture element (ij) at the intersection between source line (i) and gate line (j) generates voltage VLCij by source voltage VSi and gate voltage VGj in case of an odd frame and write operation is performed and in case of an even frame, no write operation is done since VSi is zero, but voltage VCj equal in waveform and level to VLCij is applied reversely from common electrode 31. To cover positive and negative asymmetrical characteristics of the TFT, positive and negative pulse widths of voltage SSi are varied and when the TFT is OFF, positive and negative discharge voltages are made zero; and then, AC driving operation containing no DC component is made possible only in one direction with characteristics excellent.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1558378A JPS54108595A (en) | 1978-02-13 | 1978-02-13 | Driving method of matrix type liquid-crystal display unit |
DE2953769A DE2953769C2 (en) | 1978-02-08 | 1979-02-07 | Liquid crystal display matrix with thin film transistor arrangement |
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 |
GB7904352A GB2016780B (en) | 1978-02-08 | 1979-02-07 | Type liquid crystal display |
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 |
---|---|---|---|
JP1558378A JPS54108595A (en) | 1978-02-13 | 1978-02-13 | Driving method of matrix type liquid-crystal display unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54108595A true JPS54108595A (en) | 1979-08-25 |
Family
ID=11892741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1558378A Pending JPS54108595A (en) | 1978-02-08 | 1978-02-13 | Driving method of matrix type liquid-crystal display unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54108595A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54111298A (en) * | 1978-02-20 | 1979-08-31 | Matsushita Electric Ind Co Ltd | Driving circuit of liquid crystal display device |
JPS5621193A (en) * | 1979-07-30 | 1981-02-27 | Sharp Kk | Drive method of liquid crystal display unit |
JPS58186796A (en) * | 1982-04-26 | 1983-10-31 | 社団法人日本電子工業振興協会 | Liquid crystal display unit and driving thereof |
JPS59116685A (en) * | 1982-12-23 | 1984-07-05 | セイコーインスツルメンツ株式会社 | Image display |
JPS59119328A (en) * | 1982-12-27 | 1984-07-10 | Fujitsu Ltd | Driving method of liquid crystal display panel |
JPS61100731A (en) * | 1984-10-23 | 1986-05-19 | Seiko Instr & Electronics Ltd | Liquid crystal display device |
JPS6280626A (en) * | 1985-10-04 | 1987-04-14 | Hosiden Electronics Co Ltd | Liquid crystal display element |
JPS6349530U (en) * | 1986-09-19 | 1988-04-04 | ||
JPH05257163A (en) * | 1991-08-09 | 1993-10-08 | Semiconductor Energy Lab Co Ltd | Composite semiconductor device |
JPH06236997A (en) * | 1993-01-18 | 1994-08-23 | Canon Inc | Semiconductor device |
JPH09120084A (en) * | 1996-08-26 | 1997-05-06 | Seiko Epson Corp | Production of liquid crystal display device |
US5859443A (en) * | 1980-06-30 | 1999-01-12 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
US6355941B1 (en) | 1980-06-30 | 2002-03-12 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
US6900463B1 (en) | 1980-06-30 | 2005-05-31 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
-
1978
- 1978-02-13 JP JP1558378A patent/JPS54108595A/en active Pending
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54111298A (en) * | 1978-02-20 | 1979-08-31 | Matsushita Electric Ind Co Ltd | Driving circuit of liquid crystal display device |
JPS6131876B2 (en) * | 1978-02-20 | 1986-07-23 | Matsushita Electric Ind Co Ltd | |
JPS5621193A (en) * | 1979-07-30 | 1981-02-27 | Sharp Kk | Drive method of liquid crystal display unit |
US5859443A (en) * | 1980-06-30 | 1999-01-12 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
US6355941B1 (en) | 1980-06-30 | 2002-03-12 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
US6900463B1 (en) | 1980-06-30 | 2005-05-31 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
JPS58186796A (en) * | 1982-04-26 | 1983-10-31 | 社団法人日本電子工業振興協会 | Liquid crystal display unit and driving thereof |
JPS59116685A (en) * | 1982-12-23 | 1984-07-05 | セイコーインスツルメンツ株式会社 | Image display |
JPH0561616B2 (en) * | 1982-12-23 | 1993-09-06 | Seiko Instr & Electronics | |
JPH0470611B2 (en) * | 1982-12-27 | 1992-11-11 | Fujitsu Ltd | |
JPS59119328A (en) * | 1982-12-27 | 1984-07-10 | Fujitsu Ltd | Driving method of liquid crystal display panel |
JPS61100731A (en) * | 1984-10-23 | 1986-05-19 | Seiko Instr & Electronics Ltd | Liquid crystal display device |
JPS6280626A (en) * | 1985-10-04 | 1987-04-14 | Hosiden Electronics Co Ltd | Liquid crystal display element |
JPS6349530U (en) * | 1986-09-19 | 1988-04-04 | ||
JPH082655Y2 (en) * | 1986-09-19 | 1996-01-29 | 三洋電機株式会社 | Liquid crystal display |
JPH05257163A (en) * | 1991-08-09 | 1993-10-08 | Semiconductor Energy Lab Co Ltd | Composite semiconductor device |
JPH06236997A (en) * | 1993-01-18 | 1994-08-23 | Canon Inc | Semiconductor device |
JPH09120084A (en) * | 1996-08-26 | 1997-05-06 | Seiko Epson Corp | Production of liquid crystal display device |
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