Patent ID: 7148884

Claim:
An electronic circuit having a circuit section, comprising: a first transistor; a capacitor element that stores an electrical signal supplied by said first transistor as an amount of electrical charge; a second transistor having a conductive state that is controlled on the basis of the amount of electrical charge stored in said capacitor element; and an electronic element to which an electrical current having a current level corresponding to said conductive state is supplied, wherein there are provided a first device that supplies a first driving voltage to said circuit section, the first device being a first switching element; and a second device that supplies a second driving voltage to said circuit section, the second device being a second switching element, the first driving voltage and the second driving voltage being supplied to one electrode of the capacitor element, said first driving voltage being higher than said second driving voltage, said first device supplying said first driving voltage at least in a period in which the electrical signal is supplied to the capacitor element by said first transistor, and said second device supplying said second driving voltage at least in a period in which the amount of electrical current corresponding to the conductive state is supplied to said electronic element via said second transistor.