| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving circuit for a liquid crystal display device that is inexpensive and has high driving capabilities. SOLUTION: The driving circuit for a liquid crystal display device comprises: an operational amplifier having an inverting input, a non-inverting input, and a first output in which the inverting input and the first output are connected to each other; a first PMOS transistor in which the node of the non-inverting input of the operational amplifier is connected to the gate, and the node of the output of the operational amplifier is connected to the source; a first NMOS transistor in which the drain of the first PMOS transistor is connected to the gate, the node of the output of the operational output is connected to the drain, and the source is grounded; and a second NMOS transistor in which a predetermined first voltage is applied to the gate, the drain is connected to the drain of the first PMOS transistor and the source is grounded. COPYRIGHT: (C)2008,JPO&INPIT
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