Taking a new path, Huawei publishes patents related to "ultrasonic fingerprint"

Thanks to netizens Chang Gexiao, Soft Media New Friends 1984342, Soft Media New Friends 1931880, Rock, Paper, Scissors, Feng Jianhuiyi, Soft Media New Friends 2053114, kinja, and 7someone for their clue submissions! According to news on March 10, the State Intellectual Property Office showed that Huawei Technologies Co., Ltd. recently disclosed an "ultrasonic fingerprint" patent. The patent number is CN117058725A, and the application date is July 4, 2023.

The patent summary shows that this is "an ultrasonic fingerprint identification module, system and electronic device", which is claimed to "can improve the accuracy of identifying fingerprint information". It has been noted that many mobile phone manufacturers currently use Goodix Technology solutions for ultrasonic fingerprint recognition, but related ultrasonic fingerprint identification solutions cannot bypass Qualcomm's patents. This new "ultrasonic fingerprint" patent announced by Huawei is expected to create a new type of ultrasonic fingerprint recognition solution. own new path. The summary of the patent is organized as follows:

The embodiment of this application provides an ultrasonic fingerprint identification module, system and electronic device. Among them, an ultrasonic fingerprint recognition module includes: a stacked common electrode, a piezoelectric layer and a circuit substrate. The side of the circuit substrate close to the piezoelectric layer includes multiple pixel electrode units arranged in an array, each The pixel electrode unit corresponds to one pixel, and each pixel electrode unit includes N first pixel electrodes and M second pixel electrodes; one side of the piezoelectric layer is electrically connected to the common electrode, and the other side of the piezoelectric layer is electrically connected to multiple The pixel electrode units are electrically connected; when the ultrasonic fingerprint recognition module is in the transmitting mode, the N first pixel electrodes are in a connected state, and the M second pixel electrodes are in a floating state; when the ultrasonic fingerprint recognition module is in the receiving mode In the case of , the N first pixel electrodes and the M second pixel electrodes are all connected. Implementing the embodiments of this application can improve the accuracy of identifying fingerprint information.

▲ Source: State Intellectual Property Office official website

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