Patent ID: 8605028
Filing Date: 2013-12-10
Classification: G09G,G11C

Abstract:
1. A scanning signal line drive circuit of a display device that drives a plurality of scanning signal lines provided for a display unit, the scanning signal line drive circuit comprising: a shift register that includes a plurality of bistable circuits connected in series to each other, each having a first state and a second state, the bistable circuits being sequentially turned to the first state based on clock signals of three phases including a first clock signal, a second clock signal, and a third clock signal that are externally inputted and whose potentials are cyclically turned between a high level and a low level, wherein each bistable circuit includes: a duty ratio indicating a ratio of a period, in which a high level potential is maintained, to a cycle, in which the clock signals of the three phases repeat a high level potential and a low level potential, is one third, and the phases of the first clock signal, the second clock signal, and the third clock signal are different from each other by one third of one cycle, and in each bistable circuit,