| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: a video having a color different from the color to be desirably displayed in a liquid crystal panel in fact is displayed because the linearity collapses due to a temperature condition. SOLUTION: The driving circuit 7 for liquid crystal panel is provided with a video signal production part 20 in which a digital data is D/A-converted, a voltage level is shifted, thereafter, voltage amplification is performed and, thereby, an analog video signal is produced, and further is provided with an adjustment part 30 which adjusts a voltage shift amount and voltage amplification factor of the video signal generating part 20. The adjustment part 30 is provided with: a reference data output circuit 36 which outputs a reference digital data; a reference voltage generating circuit 31 which generates a reference voltage; a comparator 32 which compares a voltage outputted from the video signal generating part 20 when inputting the reference digital data to the video signal generating part 20 with the reference voltage; and an adjustment circuit 33 which adjusts the voltage shift amount and the voltage amplification factor of the video signal generating part 20 in accordance with the comparison results of the comparator 32. COPYRIGHT: (C)2008,JPO&INPIT
|
