| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device in which there is no transistor for generating a common voltage. <P>SOLUTION: A liquid crystal display device includes a first substrate to which a source voltage according to a gradation value of a video signal is supplied, a second substrate disposed so as to face the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a common voltage generating circuit generating a common voltage supplied to the second substrate. The common voltage generating circuit includes an operational amplifier in which an output terminal is connected to an inverted input terminal to constitute a feedback loop and which amplifies in a non-inverting manner an input signal supplied to a non-inverted input terminal, a resistance connected in series between the output terminal and the inverted input terminal of the operational amplifier, and a capacitor connected to the resistance in parallel. <P>COPYRIGHT: (C)2012,JPO&INPIT |
