JPS5474330A - Dynamic driving method for liquid crystal - Google Patents
Dynamic driving method for liquid crystalInfo
- Publication number
- JPS5474330A JPS5474330A JP14297277A JP14297277A JPS5474330A JP S5474330 A JPS5474330 A JP S5474330A JP 14297277 A JP14297277 A JP 14297277A JP 14297277 A JP14297277 A JP 14297277A JP S5474330 A JPS5474330 A JP S5474330A
- Authority
- JP
- Japan
- Prior art keywords
- interval
- signal
- counter
- apply
- liquid
- 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
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
PURPOSE: To make it possible to vary and apply an effective voltage corresponding to characteristics of a liquid-crystal plate, by providing a zero bias interval as long as any interval within the one period of the driving waveform of liquid crystal.
CONSTITUTION: Counter 1 counts clock pulse CP to make an interval of 1/4T, and its contents are applied to digital comparator 2. Form when the contents set by preset circuit 3 agree with those of counter 1 until when counter 1 completes the counting for an interval of 1/4T. digital comparator 2 outputs a signal to digit driver circuit 4 and segment driver circuit 5, which apply driving voltages equivalent to digital signal SD and segment signal SS to each electrode of liquid-crystal display board 6, and apply voltages as a zero bias interval to each electrode when comparator 2 outputs no signal.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14297277A JPS5474330A (en) | 1977-11-25 | 1977-11-25 | Dynamic driving method for liquid crystal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14297277A JPS5474330A (en) | 1977-11-25 | 1977-11-25 | Dynamic driving method for liquid crystal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5474330A true JPS5474330A (en) | 1979-06-14 |
Family
ID=15327931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14297277A Pending JPS5474330A (en) | 1977-11-25 | 1977-11-25 | Dynamic driving method for liquid crystal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5474330A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0315023A (en) * | 1989-06-13 | 1991-01-23 | Sharp Corp | Liquid crystal driving circuit |
-
1977
- 1977-11-25 JP JP14297277A patent/JPS5474330A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0315023A (en) * | 1989-06-13 | 1991-01-23 | Sharp Corp | Liquid crystal driving circuit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1017838A (en) | Matrix-addressed liquid crystal display | |
CA995470A (en) | Electronic watch with display signal level converters | |
JPS5474330A (en) | Dynamic driving method for liquid crystal | |
AU5043679A (en) | Circuit for oscilloscope liquid crystal display screen | |
WO1979000676A1 (en) | Circuit for driving electro-optical display unit | |
JPS542096A (en) | Drive unit for liquid crystal matrix panel | |
JPS5433056A (en) | Display device | |
JPS51117893A (en) | Liquid crystal display device | |
JPS5424538A (en) | Liquid crystal type tablet | |
JPS53143194A (en) | Liquid crystal display device | |
JPS5274296A (en) | Liquid crystal driving circuit | |
JPS5320796A (en) | Liquid crystal display unit | |
JPS54121097A (en) | Liquid crystal display unit | |
JPS5240996A (en) | Liquid crystal display equipment | |
JPS5462726A (en) | Time-division driving system of liquid-crystal display unit | |
JPS5366332A (en) | Liquid crystal driving system | |
JPS5334496A (en) | Multi color liquid crystal display | |
JPS52123195A (en) | Driving system of matrix type liquid crystal element | |
JPS5333598A (en) | Driving system of display device | |
JPS5332696A (en) | Driving method of liquid crystal matrix display device | |
JPS5978939U (en) | liquid container | |
JPS5433054A (en) | Display device | |
JPS5342772A (en) | Electronic watch | |
JPS5222432A (en) | Method of driving display unit | |
JPS53101295A (en) | Driving system for liquid crystal display unit |