Touch key press and fingerprint identification implementation device and method, and terminal device

The invention discloses a touch key press and fingerprint identification implementation device and method, and a terminal device. A fingerprint identification sensor comprises a plurality of sub-sensors and is used for transmitting signals generated through detection of the sub-sensors to a fingerprint identification circuit when an all-in-one switch is turned off, and when the all-in-one switch is turned on, the signals generated through detection of the sub-sensors are combined into a touch signal to be transmitted to a touch key press circuit through the all-in-one switch, the fingerprint identification circuit is used for processing the signals generated through detection of the sub-sensors, and the touch key press circuit is used for judging whether touch operation is generated or not according to the touch signal obtained through combination. According to the touch key-press and fingerprint identification implementation device and method, and the terminal device, the common fingerprint identification sensor can be used for achieving the function of fingerprint identification and touch key press, external parts of the function of fingerprint identification and touch key press are integrated into one part, the integration degree of an electronic device is improved, and convenience of operation of a user is improved.