Temperature compensation apparatus for liquid crystal display
US5414441A · kind A · utility
17Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1991 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Jul 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Driving apparatus for a liquid crystal display. The apparatus includes a square wave generator which drives an operational amplifier. The operational amplifier has a pair of parallel feedback paths, one of which is a capacitive feedback path and the other of which is a resistive feedback path. Automatic temperature compensation is provided by incorporating a thermistor in the resistive feedback path. The output signal from the operational amplifier varies in a linear manner with temperature so as to produce an optimal drive for the liquid crystal display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.