Power supply circuit, LCD driver IC and liquid crystal...

Details Power supply circuit, LCD driver IC and liquid crystal... Power supply circuit, LCD driver IC and liquid crystal...

2011-04-19

2011-04-19

Wang, Quan-Zhen (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

Reexamination Certificate

active

07928973

ABSTRACT:
A power supply circuit is provided with a temperature gradient variable circuit that produces a gradient voltage whose voltage level varies with a temperature gradient commensurate with the ambient temperature and a temperature gradient setting circuit that produces an output voltage (and hence a drive voltage of an LCD panel) by adjusting the temperature gradient and the voltage level of the gradient voltage. With this configuration, it is possible to supply the optimal drive voltage despite variations in the ambient temperature or variations in characteristics of LCD panels.

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