JPS649498A - Driving circuit for liquid crystal display device - Google Patents
Driving circuit for liquid crystal display deviceInfo
- Publication number
- JPS649498A JPS649498A JP16389687A JP16389687A JPS649498A JP S649498 A JPS649498 A JP S649498A JP 16389687 A JP16389687 A JP 16389687A JP 16389687 A JP16389687 A JP 16389687A JP S649498 A JPS649498 A JP S649498A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- circuit
- signal
- clock signal
- polarity
- 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
Links
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
PURPOSE: To improve the display quality of liquid crystal by sampling an analog signal by a sample holding circuit with a clock signal, holding it by a signal holding circuit up to a next cycle, and inverting the polarity by a polarity inverting circuit. CONSTITUTION: Liquid crystal cells are turned on by gate lines G and data lines D by sequential voltage application from a scanning electrode driving circuit 42 and a data electrode driving circuit 41. The analog signal inputted to the sample holding circuit 1 in the circuit 41 is sampled with the clock signal and charged in a capacitor 12 by the data lines, its output is inputted to the signal holding circuit 2 and held by a voltage follower part 32B up to a next half cycle independently of the clock signal, and the polarity inverting circuit 3 inverts the polarity for only the half cycle period through the switching of a switch 31 and outputs the signal to the liquid crystal. Therefore, a voltage for gradational display corresponding to the analog voltage can be applied to the liquid crystal connected to each data line for the one-cycle period of the clock signal for a long time to improve the display quality of the liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62163896A JP2650106B2 (en) | 1987-07-02 | 1987-07-02 | Drive circuit for liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62163896A JP2650106B2 (en) | 1987-07-02 | 1987-07-02 | Drive circuit for liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS649498A true JPS649498A (en) | 1989-01-12 |
| JP2650106B2 JP2650106B2 (en) | 1997-09-03 |
Family
ID=15782869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62163896A Expired - Fee Related JP2650106B2 (en) | 1987-07-02 | 1987-07-02 | Drive circuit for liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2650106B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639591A (en) * | 1979-09-07 | 1981-04-15 | Tokyo Shibaura Electric Co | Matrix type liquid crystal display unit |
| JPS6114697A (en) * | 1984-06-29 | 1986-01-22 | シャープ株式会社 | Driving circuit for color liquid crystal display unit |
| JPS6127185U (en) * | 1984-07-20 | 1986-02-18 | 三洋電機株式会社 | display device |
| JPS62135196U (en) * | 1986-02-19 | 1987-08-25 |
-
1987
- 1987-07-02 JP JP62163896A patent/JP2650106B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639591A (en) * | 1979-09-07 | 1981-04-15 | Tokyo Shibaura Electric Co | Matrix type liquid crystal display unit |
| JPS6114697A (en) * | 1984-06-29 | 1986-01-22 | シャープ株式会社 | Driving circuit for color liquid crystal display unit |
| JPS6127185U (en) * | 1984-07-20 | 1986-02-18 | 三洋電機株式会社 | display device |
| JPS62135196U (en) * | 1986-02-19 | 1987-08-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2650106B2 (en) | 1997-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6486197A (en) | Drive circuit for liquid crystal panel | |
| KR970002830A (en) | Method and apparatus for driving display panel | |
| KR890007112A (en) | Halftone Display | |
| KR940012769A (en) | Switched Capacitor Digital-to-Analog Converter | |
| KR950020069A (en) | Data driver | |
| KR970061481A (en) | An image signal control circuit for controlling an image signal for displaying an image on a multi-gradation liquid crystal display and a control method thereof | |
| GB1471219A (en) | Display arrangement | |
| GB2043341B (en) | Apparatus for switching high voltage pulses with picosecond accuracy | |
| EP0391654A3 (en) | A drive circuit for driving an lcd apparatus | |
| JPS649498A (en) | Driving circuit for liquid crystal display device | |
| JPS5498525A (en) | Driving circuit for liquid crystal display unit | |
| JPS6455913A (en) | Analog-digital signal converter | |
| JPS5611375A (en) | Waveform display unit | |
| GB1472597A (en) | Liquid crystal display device | |
| JPS6410298A (en) | Liquid crystal driving circuit | |
| JPS56119994A (en) | Driving method of charge-transfer device | |
| JPS5433056A (en) | Display device | |
| JPS56160135A (en) | Sampling circuit | |
| RU1791824C (en) | Multiplication-division unit | |
| JPH06149185A (en) | LCD drive circuit | |
| SU1658211A2 (en) | Analog memory device | |
| JPS56114200A (en) | Sample holding circuit | |
| JPS6465928A (en) | Switching comparator | |
| JPS57108775A (en) | A/n radar display system | |
| JPS6476595A (en) | Sample/hold circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |