| 摘要 |
A display driver including: a hold circuit; a D/A converter converting display data from the hold circuit; and an output selector receiving a gray scale voltage based on output of the converter into a first input terminal and outputting a drive voltage to a drive voltage output terminal, the hold circuit including first to n-th latch circuits. In normal operations, the hold circuit outputs data latched in the latch circuits to the converter. In test operations, the hold circuit serially outputs data latched in the latch circuits as serial output data from the n-th latch circuit. The output selector has a second input terminal receiving the serial output data, outputs to the drive voltage output terminal the gray scale voltage inputted into the first input terminal in normal operations, and a voltage based on the serial output data from the hold circuit into the second input terminal in test operations.
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