Reference voltage generating circuit for liquid crystal display

Details Reference voltage generating circuit for liquid crystal display Reference voltage generating circuit for liquid crystal display

2005-01-18

2005-01-18

Tokar, Michael (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C345S089000

Reexamination Certificate

active

06844839

ABSTRACT:
Disclosed is a reference voltage generating circuit for a liquid crystal display liquid crystal display. The reference voltage generating circuit comprising: an analog voltage generating means for pre-storing a synchronizing signal and digital data signals inputted from outside in response to a write-enable signal, and converting the stored digital data signals into multiple sets of analog voltage signal pairs in response to an output-enable signal; a plurality of variable reference voltage generating means for voltage-distributing corresponding analog voltage signal pairs from among the analog voltage signal pairs generated by the analog voltage generating means, and outputting a plurality of variable reference voltage signals, respectively; a plurality of fixed reference voltage generating means for voltage-distributing a boosted source voltage, so as to output a plurality of fixed reference voltage signals respectively; and a source-driver integrated circuit for receiving the variable reference voltage signals and the fixed reference voltage signals.

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