Patent ID: 7652653

Claim:
A display device comprising: a plurality of pixels; and a drive circuit which drives the plurality of pixels, wherein the drive circuit includes a shift register, the shift register includes n(n≧2) pieces of basic circuits which are connected vertically in multiple rows, the basic circuit includes: a first transistor of a first conductive type having a first electrode to which a clock is applied; a second transistor of a second conductive type different from the first transistor of the first conductive type in a conductive type and has a second electrode thereof connected to a second electrode of the first transistor and has a second power source voltage applied to a first electrode thereof, a third transistor of the first conductive type in which a first power source voltage different from the second power source voltage source is applied to the first electrode; a fourth transistor of the second conductive type which has a second electrode thereof connected to a second electrode of the third transistor, a control electrode thereof connected to the second electrode of the first transistor, and the second power source voltage applied to a first electrode thereof; a fifth transistor of the first conductive type which has the first power source voltage applied to a first electrode thereof and has a second electrode thereof connected to a control electrode of the third transistor; and a sixth transistor of the second conductive type which has a second electrode thereof connected to the second electrode of the fifth transistor and has the second power source voltage applied to a first electrode thereof; wherein: an input signal is applied to a control electrode of the first transistor, a control electrode of the second transistor, a control electrode of the fifth transistor, the second electrode of the first transistor is connected to a scanning circuit output terminal, a reset signal is applied to a control electrode of the sixth transistor, and a second electrode of the third transistor is connected to a transfer output terminal.