Patent ID: 9064466
Filing Date: 2015-06-23
Classification: G09G,G11C

Abstract:
1. A shift register device, comprising: a plurality of serially connected shift registers, wherein the shift registers sequentially generate a plurality of scan signals, wherein each of the shift registers comprises a forward pre-charge unit, a reverse pre-charge unit, a pull-up unit, and a pull-down unit, the pull-up unit generates an output scan signal, and the pull-down unit determines whether to pull down the output scan signal to a reference potential, wherein each of the shift registers generates one of the scan signals according to a predetermined activating signal and a plurality of clock signals, wherein the shift registers are categorized into a first group, a second group, and a third group, wherein the pull-down unit in the first group of shift registers and the pull-down unit in the second group of shift registers have different circuit structures, wherein the pull-down unit in the second group of shift registers and the pull-down unit in the third group of shift registers have different circuit structures, wherein the pull-down unit in the first group of shift registers and the pull-down unit in the third group of shift registers have different circuit structures.