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发明授权
CN107591136B 一种栅极扫描驱动电路及液晶显示装置 失效 - 权利终止 转让

一种栅极扫描驱动电路及液晶显示装置
摘要：
本发明公开了一种栅极扫描驱动电路，包括级联的多个驱动电路单元，第n级(N≥n≥1，且n为整数)驱动电路单元包括正反扫控制模块、维持模块以及上拉模块；正反扫控制模块包括正反扫上拉控制模块和下拉清空模块；正反扫上拉控制模块、下拉清空模块、维持模块以及上拉模块连接于上拉控制节点，维持模块、上拉模块连接于本级扫描信号线；正反扫上拉控制模块的通路端输入高电平，正反扫上拉控制模块的控制端输入前级驱动电路单元的扫描信号和后级驱动电路单元的扫描信号；下拉清空模块的控制端输入前级驱动电路单元的时钟信号，下拉清空模块的通路端分别连接上拉控制节点和低电平。
摘要（英）：

A gate drive unit circuit, which is suitable for carrying out multi-level connection to form a gate drive circuit and which comprises a forward and reverse scan control module, a maintenance module 04 and a pull-up module 03; the forward and reverse scan control module comprises a forward and reverse scan pull-up control module 01, which is used for receiving a scan signal Gn-2 of a front-stage gate drive unit circuit and a scan signal Gn+2 of a back-stage gate drive unit circuit and which is used for starting the circuit under the control of the scan signals Gn-2 and Gn+2 to achieve forward and backward scanning. The gate drive unit circuit achieves a forward and reverse scan function for the circuit by using timing control, reduces the number of control signals, and may alleviate the problem wherein circuit failure is caused by the negative drift of the threshold voltage of a device that controls forward and reverse scanning in the circuit.

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