发明名称 |
Shift register |
摘要 |
A shift register is discussed in which a pull-up switching device is turned off positively in a period in which no scan pulse is forwarded for securing drive stability and prevents a picture quality from becoming poor. The shift register in one embodiment includes stages having any one of first and second start pulses, and any one of first to fourth clock pulses to forward a scan pulse in succession, wherein the first and second start pulses are in gate high voltage states for two horizontal periods, with the second start pulse forwarded with a delay of one horizontal period than the first start pulse. The first to fourth clock pulses are in gate high voltages for two horizontal periods, with one horizontal period delay to one another. |
申请公布号 |
US8792609(B2) |
申请公布日期 |
2014.07.29 |
申请号 |
US201313942088 |
申请日期 |
2013.07.15 |
申请人 |
LG Display Co., Ltd. |
发明人 |
Ahn Jung-Eun;Jung Bo-Young;Chae Ji-Eun |
分类号 |
G11C19/00 |
主分类号 |
G11C19/00 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A shift register comprising:
a plurality of stages having any one of first and second start pulses, and any one of first to fourth clock pulses provided thereto to forward a scan pulse in succession, wherein the first and second start pulses are in gate high voltage states for two horizontal periods, with the second start pulse forwarded with a delay of one horizontal period than the first start pulse, the first to fourth clock pulses are in the gate high voltage states for two horizontal periods, with one horizontal period delay to one another, and rest of the stages except the first and second stages are initialized in response to the second start pulse. |
地址 |
Seoul KR |