摘要：【中文】本发明公开了一种指纹识别电路及其工作方法、显示面板和显示装置，属于显示技术领域，指纹识别电路包括指纹识别单元、对比单元、选择单元，选择单元提供指纹电流信号至指纹电流输出端，还提供基准电流信号至基准电流输出端；根据指纹电流信号与基准电流信号的差值读取指纹识别信号。指纹识别电路的工作方法包括：信号重置阶段、信号检测阶段、信号读取阶段。显示面板包括上述指纹识别电路。显示装置包括上述显示面板。本发明在同一时间同时输出干扰信号和指纹信号，再做扣除，避免不同时间点读取指纹信号可能还会引入其他变量的情况发生，进而可以提升指纹识别信号的信噪比，增强抗干扰能力，有利于提高指纹识别效果。 【EN】The invention discloses a fingerprint identification circuit and a working method thereof, a display panel and a display device, belonging to the technical field of display, wherein the fingerprint identification circuit comprises a fingerprint identification unit, a comparison unit and a selection unit, wherein the selection unit provides a fingerprint current signal to a fingerprint current output end and also provides a reference current signal to a reference current output end; and reading the fingerprint identification signal according to the difference value of the fingerprint current signal and the reference current signal. The working method of the fingerprint identification circuit comprises the following steps: signal reset phase, signal detection phase and signal reading phase. The display panel comprises the fingerprint identification circuit. The display device comprises the display panel. The invention simultaneously outputs the interference signal and the fingerprint signal at the same time, and then deducts the interference signal and the fingerprint signal, thereby avoiding the situation that other variables are possibly introduced when the fingerprint signal is read at different time points, further improving the signal-to-noise ratio of the fingerprint identification signal, enhancing the anti-interference capability and being beneficial to improving the fingerprint identification effect.