Liquid crystal driving power supply circuit and liquid crystal display device including the same

摘要

The object of the present invention is to provide a liquid crystal display power supply circuit having low power consumption and a liquid crystal display device having the same. In order to achieve the above purpose, the liquid crystal driving power supply circuit of the present invention comprises a plurality of liquid crystals from a voltage divided portion (R1, R2, R3, R4) that generates a plurality of voltages by dividing at least the first and second reference voltages (VSH, VSL) and a voltage generated by the partial pressure A plurality of operational amplifiers (OP1 and op2) for generating a driving voltage and a circuit (1) for generating a plurality of power supply voltages having different voltages, respectively, and a first power supply voltage (voph) is supplied to one of the OP AMP (OP1) and lower than the first power supply voltage The second power supply voltage (vopl) is supplied to another one (op2) of the operational amplifier.