扫描电路、驱动电路、触控显示面板、接收切换电路及驱动方法

文档序号:1382581 发布日期:2020-08-14 浏览:9次 >En<

阅读说明:本技术 扫描电路、驱动电路、触控显示面板、接收切换电路及驱动方法 (Scanning circuit, driving circuit, touch display panel, receiving switching circuit and driving method ) 是由 许世峰 谢晓冬 何敏 钟腾飞 张新秀 庞斌 李媛 于 2018-11-30 设计创作,主要内容包括:一种扫描电路、驱动电路、触控显示面板、接收切换电路及驱动方法。该扫描电路(10),包括功能切换电路(100)和多个级联的移位寄存器单元(200)。多个级联的移位寄存器单元(200)的每个包括控制端(CTRL1)和移位扫描输出端(OUT1),且配置为响应于控制端(CTRL1)接收的控制信号在移位扫描输出端(OUT1)输出第一输出信号;功能切换电路(100)包括模式切换输入端(SW)、控制信号输出端(CTRL2)和模式扫描输出端(OUT2),且控制信号输出端(CTRL2)和模式扫描输出端(OUT2)分别与多个级联的移位寄存器单元(200)的控制端(CTRL1)和移位扫描输出端(OUT1)连接。功能切换电路(100)配置为响应于模式切换输入端(SW)接收的模式切换输入信号,在控制信号输出端(CTRL2)输出控制信号至多个级联的移位寄存器单元(200)的控制端(CTRL1),或者在模式扫描输出端(OUT2)输出第二输出信号至多个级联的移位寄存器单元(200)的移位扫描输出端(OUT1)。该扫描电路不需要大量增加驱动指纹识别单元的通道数量,即可实现显示屏内任意位置的指纹识别和触控功能。(A scanning circuit, a driving circuit, a touch display panel, a receiving switching circuit and a driving method are provided. The scanning circuit (10) comprises a function switching circuit (100) and a plurality of cascaded shift register units (200). Each of the plurality of cascaded shift register cells (200) includes a control terminal (CTRL1) and a shift scan output terminal (OUT1), and is configured to output a first output signal at the shift scan output terminal (OUT1) in response to a control signal received by the control terminal (CTRL 1); the function switching circuit (100) comprises a mode switching input terminal (SW), a control signal output terminal (CTRL2) and a mode scanning output terminal (OUT2), and the control signal output terminal (CTRL2) and the mode scanning output terminal (OUT2) are respectively connected with the control terminals (CTRL1) and the shift scanning output terminals (OUT1) of the plurality of cascaded shift register units (200). The function switching circuit (100) is configured to output a control signal at a control signal output (CTRL2) to a control terminal (CTRL1) of the plurality of cascaded shift register cells (200), or to output a second output signal at a mode scan output (OUT2) to a shift scan output (OUT1) of the plurality of cascaded shift register cells (200), in response to a mode switching input signal received at the mode switching input (SW). The scanning circuit can realize the fingerprint identification and touch control functions of any position in the display screen without greatly increasing the number of channels for driving the fingerprint identification unit.)

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