首页> 外国专利> FINGERPRINT RECOGNITION DRIVING CIRCUIT, FINGERPRINT RECOGNITION MODULE, TOUCH SCREEN, DISPLAY DEVICE AND FINGERPRINT RECOGNITION DRIVING METHOD

FINGERPRINT RECOGNITION DRIVING CIRCUIT, FINGERPRINT RECOGNITION MODULE, TOUCH SCREEN, DISPLAY DEVICE AND FINGERPRINT RECOGNITION DRIVING METHOD

机译:指纹识别驱动电路,指纹识别模块,触摸屏,显示装置和指纹识别驱动方法

摘要

Fingerprint recognition driving circuit and method, fingerprint recognition module and touch screen are provided. The circuit includes: a first charge storing sub-circuit, a data acquiring sub-circuit configured to write output voltage of an ultrasonic sensor into a first end of the first charge storing sub-circuit, a driving sub-circuit including a driving transistor, a second charge storing sub-circuit, a circuit compensating sub-circuit configured to charge the second charge storing sub-circuit through the first charge storing sub-circuit and the driving transistor ill potential at a first end of the second charge storing sub-circuit equals the sum of output voltage of the ultrasonic sensor and threshold voltage of the driving transistor, and an output controlling sub-circuit configured to transmit a current signal output by the driving transistor to a signal reading circuit.
机译:提供指纹识别驱动电路和方法,指纹识别模块和触摸屏。 该电路包括:第一电荷存储子电路,数据获取子电路被配置为将超声波传感器的输出电压写入第一电荷存储子电路的第一端,包括驱动晶体管的驱动子电路, 第二电荷存储子电路,电路补偿子电路被配置为将第二电荷存储子电路充电通过第一电荷存储子电路和第二电荷存储子电路的第一端的驱动晶体管不存在电位 等于超声波传感器的输出电压和驱动晶体管的阈值电压,以及输出控制子电路,被配置为将由驱动晶体管输出的电流信号传输到信号读取电路。

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