| 摘要 |
<P>PROBLEM TO BE SOLVED: To cause a scanning line to be in a high impedance state by using transistors of a single conductivity type to improve rise and fall characteristics of a pulse. <P>SOLUTION: A one-stage shift register includes: a first transistor with a drain electrode connected to a corresponding scanning line and a source electrode connected to a power supply; a second transistor having the same conductivity type as that of the first transistor with a drain electrode connected to a gate electrode of the first transistor, a source electrode connected to the power supply, and a gate electrode connected to a first external control signal line; a third transistor having the same conductivity type as that of the first transistor with a drain electrode connected to the drain electrode of the second transistor, a source electrode connected to the power supply, and a gate electrode connected to a node that uses a bootstrap effect; and a load circuit with one end connected to a second external control signal line and the other end connected to the drain electrode of the second transistor. <P>COPYRIGHT: (C)2011,JPO&INPIT |
