Title: Deriving device IC, electric optical appliance and electronic apparatus
Application Number: 200410076936 Application Date: 2000.11.04
Publication Number: 1584968 Publication Date: 2005.02.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G02F1/133,G09G3/20,G09G3/36
Applicant(s) Name: Seiko Epson Corp. Address:
Inventor(s) Name:
Attorney & Agent: wang zhongzhong
Abstract:
     A liquid crystal driver IC comprising: a power circuit; an electric volume for varying an output voltage from the power circuit; a temperature detector; and a correction table for storing an electric volume control value corresponding to a temperature detected by the temperature detector. The power circuit includes: a first power circuit having a first temperature-voltage characteristic; a second power circuit having a second temperature-voltage characteristic; and a temperature gradient selection circuit for outputting a voltage conforming with a desired temperature gradient characteristic based on output voltages from the first and second power circuits. The temperature detector detects an actual temperature based on the first and second temperature-voltage characteristics. The output voltages from the first and second power circuits are adjusted at the electric volume according to the electric volume control value in the correction table and are output, when the electrical volume control value corresponds to an actual temperature detected by the temperature detector.
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