| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit for driving a display device which is provided with the specific means for easily detecting defects of an output circuit, and is permitted to self-repair the defect when the defect is detected in the output circuit. SOLUTION: The semiconductor integrated circuit 10 for driving liquid crystal is provided with: an output terminal connected to a display panel; an output circuit block including a DAC circuit 8 which can be connected to the output terminal; and an auxiliary output circuit block including a DAC circuit 28 which can be connected to the output terminal. The semiconductor integrated circuit is also provided with: an operation amplifier 1 which compares an output signal output from the DAC circuit 8 with an output signal output from the DAC circuit 28; a determination circuit 3 which determines whether the DAC circuit 8 is failure or not, based on the comparison results obtained from the operation amplifier 1; and switches 2c, 2d, which connect the DAC circuit 28 as a substitute for the DAC circuit 8, to the output terminal, when the determination result obtained from the determination circuit 3 indicates failure of the output circuit. COPYRIGHT: (C)2009,JPO&INPIT
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