发明名称 LIQUID CRYSTAL DISPLAY DEVICE
摘要 PROBLEM TO BE SOLVED: To reduce a circuit area and costs by configuring an alternated signal generating circuit to vary the inversion cycle of the alternated signal according to analog voltages inputted to the circuit. SOLUTION: An alternating circuit 30 is comprised of an alternated signal generating circuit 31, and resisters R1, R2 connected in series across operating voltages VA of the alternated signal generating circuit 31. The connection point of the resisters R1, R2 is connected with the terminal P of the alternated signal generating circuit 31. An analog voltage is a voltage obtained by dividing the operating voltage VA by the resisters R1 and R2. The alternated signal generating circuit 31 inverts an alternated signal M outputted from a terminal TM when clocks CL1 are counted from a terminal TCL1 and the count value reaches a count value corresponding to the analog voltage inputted to a terminal P. At the same time such an operation is repeated as the counted value of the clocks CL1 is reset to restart counting the clocks CL1.
申请公布号 JP2000200062(A) 申请公布日期 2000.07.18
申请号 JP19990057143 申请日期 1999.03.04
申请人 SHARP CORP 发明人 SHIBUYA MUNENORI
分类号 G09G3/20;(IPC1-7):G09G3/20 主分类号 G09G3/20
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