JPS6410298A - Liquid crystal driving circuit - Google Patents
Liquid crystal driving circuitInfo
- Publication number
- JPS6410298A JPS6410298A JP16630687A JP16630687A JPS6410298A JP S6410298 A JPS6410298 A JP S6410298A JP 16630687 A JP16630687 A JP 16630687A JP 16630687 A JP16630687 A JP 16630687A JP S6410298 A JPS6410298 A JP S6410298A
- Authority
- JP
- Japan
- Prior art keywords
- sample holding
- pulse width
- decoders
- width modulation
- switches
- 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 easily constitute a driver without using a D/A converter which has a high-speed settling time by providing plural switches which are provided between a reference voltage generating circuit and a capacitive element and opened and closed under the control of outputs of corresponding decoders in a decoder group. CONSTITUTION: This circuit has decoders 121, 122... for pulse width modulation, a sample holding circuit consisting of sample holding capacitors 41, 42... and sample holding switches 51, 52..., and output buffers 31 and 32.... In this case, the sample holding switches 51, 52... are closed only when output waveforms generated by the pulse width modulation of the decoders 121, 122... for pulse width modulation are high-level outputs, and only voltages which are proportional to the pulse width are charged in the sample holding capacitors 41, 42... and outputted by output buffer amplifiers 31, 32.... Consequently, the driver can be constituted without using a D/A converter which has a high-speed settling time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16630687A JPS6410298A (en) | 1987-07-02 | 1987-07-02 | Liquid crystal driving circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16630687A JPS6410298A (en) | 1987-07-02 | 1987-07-02 | Liquid crystal driving circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6410298A true JPS6410298A (en) | 1989-01-13 |
Family
ID=15828895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16630687A Pending JPS6410298A (en) | 1987-07-02 | 1987-07-02 | Liquid crystal driving circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6410298A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04177321A (en) * | 1990-11-13 | 1992-06-24 | Nec Corp | Driving method of liquid crystal display panel |
KR100760685B1 (en) * | 2006-08-21 | 2007-09-20 | 쌍용자동차 주식회사 | Wiring protector |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63107380A (en) * | 1986-10-24 | 1988-05-12 | Hitachi Ltd | Driving circuit for liquid crystal display device |
-
1987
- 1987-07-02 JP JP16630687A patent/JPS6410298A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63107380A (en) * | 1986-10-24 | 1988-05-12 | Hitachi Ltd | Driving circuit for liquid crystal display device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04177321A (en) * | 1990-11-13 | 1992-06-24 | Nec Corp | Driving method of liquid crystal display panel |
KR100760685B1 (en) * | 2006-08-21 | 2007-09-20 | 쌍용자동차 주식회사 | Wiring protector |
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