On January 5, the information showed that on January 4, Beijing Xiaomi Mobile Software Co., Ltd. obtained the patent authorization of "a full-screen fingerprint recognition device, display device and terminal".
The abstract shows that the full-screen fingerprint recognition device includes a controller, a fingerprint recognition component, and a fingerprint light source. The device adopts a direct infrared LED method, which changes the identification light source of the full-screen fingerprint to infrared light, which is separated from the original display light source, and the fingerprint recognition sensor only receives infrared light. In addition, when fingerprinting is performed, the infrared LEDs in the fingerprint area can be turned on only, and the surrounding infrared LEDs can be turned off.
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