Shenzhen Goodix Technology Co., Ltd.

Mengping Li

Canhong Du

Songjin Zhong

A fingerprint identification apparatus and an electronic device. The fingerprint identification apparatus includes: a fingerprint sensor; and the fingerprint sensor including an optical sensing array, wherein a spatial period N of the optical sensing array satisfies N&#x3c;M/2K; wherein M is a spatial period of a light-emitting pixel array, and K is a zoom ratio between an image displayed in a sensing area of the fingerprint sensor and an image captured in the sensing area by the fingerprint sensor. By clarifying the relationship between the spatial period of the light-emitting pixel array in the display screen and the spatial period of the optical sensing array in the fingerprint sensor, it can avoid the sensor from generating moir&#xe9; fringes when imaging based on light received by transmitting through the display screen, thereby improving fingerprint identification performance.

Fingerprint identification apparatus and electronic device

A fingerprint identification apparatus and an electronic device applicable to an electronic device having a display screen, including: an optical function layer, disposed between the display screen and a middle frame of the electronic device, wherein the optical function layer includes a quarter-wave plate and a polarizer, and the polarizer is disposed under the quarter-wave plate; and an optical fingerprint module, disposed under the optical function layer, and configured to receive a fingerprint optical signal transmitted through the quarter-wave plate and the polarizer, wherein the fingerprint detecting signal is used for detecting fingerprint information of a finger.

A boost circuit includes: an inductor, a switch module, a capacitor and a control module. The switch module includes at least a first switch and a second switch. The capacitor and the second switch are connected in parallel. A first terminal of the first switch is connected to one terminal of the inductor. A second terminal of the first switch is connected to a first terminal of the second switch. A second terminal of the second switch is grounded. The other terminal of the inductor is configured to connect a power supply. The control module is connected to a control terminal of the switch module. The control module is configured to control states of the switches in the switch module, to enable the first terminal of the second switch to output a voltage signal with a preset frequency and amplitude.

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Shenzhen, China

Mengping Li