JPS6440893A - Liquid crystal drive voltage correction circuit - Google Patents
Liquid crystal drive voltage correction circuitInfo
- Publication number
- JPS6440893A JPS6440893A JP19619487A JP19619487A JPS6440893A JP S6440893 A JPS6440893 A JP S6440893A JP 19619487 A JP19619487 A JP 19619487A JP 19619487 A JP19619487 A JP 19619487A JP S6440893 A JPS6440893 A JP S6440893A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- emitter
- signal
- switching element
- amplifier circuit
- 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 (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
PURPOSE: To faithfully reproduce the change of light transmissivity to an input signal by providing a switching element on the side of the emitter of a liquid crystal driving voltage amplifier circuit and changing impedance on the side of emitter before and after the determined threshold. CONSTITUTION: The signal voltage of a red, green or blue primary color signal 1 is amplified with a gain RC/RE by a liquid crystal driving voltage amplifier circuit by representing the collector resistance 6 of a signal amplifying transistor 5 by RC and the emitter resistance by RE, transferred to a liquid crystal driving circuit 10 and drives a liquid crystal panel 11. When the signal voltage becomes large and exceeds the threshold voltage of a threshold power source 9, a switching element 8 is turned on, the emitter resistance 4 of the transistor 5 and the emitter resistance 7 of the switching element 8 are connected in parallel on the AC level, the impedance on the emitter side of the amplifier circuit 2 is changed and the gain is controlled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62196194A JPH0682265B2 (en) | 1987-08-07 | 1987-08-07 | Liquid crystal drive voltage correction circuit and liquid crystal display device using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62196194A JPH0682265B2 (en) | 1987-08-07 | 1987-08-07 | Liquid crystal drive voltage correction circuit and liquid crystal display device using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6440893A true JPS6440893A (en) | 1989-02-13 |
JPH0682265B2 JPH0682265B2 (en) | 1994-10-19 |
Family
ID=16353757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62196194A Expired - Lifetime JPH0682265B2 (en) | 1987-08-07 | 1987-08-07 | Liquid crystal drive voltage correction circuit and liquid crystal display device using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0682265B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7202310B2 (en) | 1997-04-18 | 2007-04-10 | Kaneka Corporation | Polymers, processes for producing the same, and curable compositions produced therefrom |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61141218A (en) * | 1984-12-14 | 1986-06-28 | Sumitomo Electric Ind Ltd | Voltage controlled oscillator |
-
1987
- 1987-08-07 JP JP62196194A patent/JPH0682265B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61141218A (en) * | 1984-12-14 | 1986-06-28 | Sumitomo Electric Ind Ltd | Voltage controlled oscillator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7202310B2 (en) | 1997-04-18 | 2007-04-10 | Kaneka Corporation | Polymers, processes for producing the same, and curable compositions produced therefrom |
Also Published As
Publication number | Publication date |
---|---|
JPH0682265B2 (en) | 1994-10-19 |
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