Patent ID: 7187004

Claim:
An electronic circuit, comprising: a first capacitive element including a first electrode and a second electrode; a first transistor including a first terminal, a second terminal, a first channel region formed between the first terminal and the second terminal, and a first control terminal; a second transistor including a third terminal, a fourth terminal, a second channel region formed between the third terminal and the fourth terminal, and a second control terminal; and a third transistor including a fifth terminal, a sixth terminal, a third channel region formed between the fifth terminal and the sixth terminal, and a third control terminal, the fifth terminal being connected to the second electrode, the second transistor being connected between the first electrode and a predetermined voltage, a potential level of the first electrode being set to a first voltage level during a first period, the first electrode being electrically connected to the predetermined voltage through the second transistor during at least a part of the first period, the fourth terminal being set at the predetermined voltage during the first period, a voltage level of the first control terminal being set by a capacitance coupling that occurs at the capacitive element by changing the potential level of the first electrode from the first voltage level to a second voltage level during a second period, and a conduction state of the first transistor being set according to the second voltage level.