| 摘要 |
PROBLEM TO BE SOLVED: To provide a gamma voltage generating circuit that can decrease failure in picture quality caused by a difference in kickback voltages between different gradations and can be obtained in a relatively simple circuit configuration. SOLUTION: The gamma voltage generating circuit includes a resistor string part, a first resistor part and a second resistor part. A first power voltage is applied to one terminal of a plurality of resistors connected in series in the resistor string part, while a second power voltage is applied to the other terminal of the string part. The resistor string part outputs a plurality of gamma voltages from nodes between resistors. The first resistor part preferably includes a first switching element and a first resistor and is connected in series between the first power terminal and one terminal of the resistor string part. The second resistor part includes a second switching element and a second resistor connected in parallel and is connected in series between the second power terminal and the other terminal of the resistance string part. Thereby, the circuit can be simplified, which can reduce manufacturing costs. COPYRIGHT: (C)2009,JPO&INPIT
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