Patent ID: 8836633
Filing Date: 2014-09-16
Classification: G09G

Abstract:
1. A display driving circuit formed on a thin film transistor array substrate, the display driving circuit comprising: a plurality of shift registers, odd-stage shift registers thereof cascaded and even-stage shift registers thereof cascaded, the shift registers supporting dual direction shifting, each of the shift registers comprising: a first transistor, a second transistor, a third transistor and a fourth transistor, wherein the first transistor is coupled to a forward scan start signal outputted from a third transistor of a former second-stage shift register, coupled to an output signal of the former second-stage shift register, and coupled to a node; the second transistor is coupled to a reverse scan start signal outputted from a fourth transistor of a next second-stage shift register, coupled to an output signal outputted from the next second-stage shift register, and coupled to the node; the third transistor is coupled to a forward operation voltage and the node, and outputs a forward scan start signal; and the fourth transistor is coupled to a reverse operation voltage and the node, and outputs a reverse scan start signal.