SHIFT REGISTER AND DRIVING METHOD THEREOF, SHIFT SCANNING CIRCUIT AND DISPLAY APPARATUS

摘要

Provided are a shift register and a driving method thereof, a shift scanning circuit, and a display apparatus. The shift register comprises an input switch unit, an inverting unit, an output switch unit, and a first node voltage maintaining unit. The input switch unit has an output terminal (O) connected to a first node (N1). The first node voltage maintaining unit has a voltage stabilizing terminal connected to the first node (N1), and is adapted to record a level at the first node (N1) when the input switch unit is turned on, and to maintain the recorded level at an input terminal (I) of the inverting unit when the input switch unit is turned off. The inverting unit has an output terminal (O) connected to a second node (N2). The output switch unit has a control terminal (CON) connected to the second node (N2), and is turned on according to a state of a level at the second node. The shift register provided by the solution can adopt a PMOS structure to realize shifting positive-logic scanning signals and outputting positive-logic scanning signals, so that the PMOS structure can be used for the scan driving of the LTPS AMOLED.

主权项

1. A shift register comprising an input switch unit, an inverting unit, an output switch unit and a first node voltage maintaining unit, wherein
the input switch unit has an output terminal connected to a first node, and is turned on according to a control signal applied on its control terminal; the first node voltage maintaining unit has a voltage stabilizing terminal connected to the first node, and is adapted to record a level at the first node when the input switch unit is turned on, and to maintain the recorded level at an input terminal of the inverting unit when the input switch unit is turned off; the inverting unit has an output terminal connected to a second node, and is adapted to make the level at the first node inverted and output to the second node, in response to the control signal input at its control terminal; the output switch unit has a control terminal connected to the second node, and is turned on according to a state of a level at the second node.