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发明公开
CN104575409A 液晶显示器及其双向移位暂存装置 有权

液晶显示器及其双向移位暂存装置
摘要：
一种液晶显示器及其双向移位暂存装置。双向移位暂存装置包括N级的移位寄存器。第i级移位寄存器包括预充电单元、上拉单元与下拉单元。当i大于等于3且小于等于N-2，预充电单元接收第(i-2)级与第(i+2)级移位寄存器的输出。当i等于1或2，预充电单元接收第一起始信号与第(i+2)级移位寄存器的输出。当i等于(N-1)或N，预充电单元接收第二起始信号与第(i-2)级移位寄存器的输出。预充电单元输出预充电信号。上拉单元接收预充电信号与预设时钟信号，并据以输出扫描信号。下接收预充电信号以控制扫描信号的电平。
摘要（英）：

The invention discloses a liquid crystal display and a bidirectional shift register thereof. The bidirectional shift register comprises N levels of shift registers, wherein an i-level shift register comprises a precharging unit, a pull-up unit and a pull-down unit; when i is larger than or equal to 3 and smaller than or equal to (N-2), the precharging unit receives output from a (i-2)-level shift register to a (i+2)-level shift register; when i is equal to 1 or 2, the precharging unit receives a first initiating signal and output of the (i+2)-level shift register; when i is equal to(N-1) or N, the precharging unit receives a second initiating signal and output of the (i-2)-level shift register; the precharging unit outputs a precharging signal; the pull-up unit receives the precharging signal and a preset clock signal and outputs a scanning signal; the pull-down unit receives the precharging signal to control the level of the scanning signal.

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