| 摘要 |
PROBLEM TO BE SOLVED: To provide a voltage supply circuit which can supply a stable driving voltage while suppressing increase in power consumption. SOLUTION: The voltage supply circuit comprises: a boosting means 60 to output a boosted voltage obtained by boosting a power source voltage; a voltage divider (R6, R7) to divide the boosting voltage and to produce a monitoring voltage for detecting a drop in the boosted voltage; driving voltage output means (66A to 66E) to output predetermined driving voltages for driving a display apparatus; and a current control means 65 to control a current quantity of operating current for operating the driving voltage output means (66A to 66E) based on the voltage of the monitoring voltage. The driving voltage output means (66A to 66E) change the response characteristics according to the current quantity of the operating current. COPYRIGHT: (C)2007,JPO&INPIT
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