Screen protection film and electronic equipment

Abstract

The embodiment of the invention provides a screen protection film and electronic equipment. The screen protection film is used for being attached to the display screen module. An ultrasonic fingerprint module is arranged on the side, away from the screen protection film, of the display screen module. The screen protection film can transmit ultrasonic waves emitted by the ultrasonic fingerprint module; the screen protection film is provided with a base body layer. The thickness of the base body layer is equal to the sum of integer multiples of the half wavelength of the ultrasonic waves in thebase body layer and a preset threshold value. The wavelength of the ultrasonic wave in the base body layer is equal to the ratio of the propagation speed of the ultrasonic wave in the base body layerto the sound wave frequency of the ultrasonic wave. Incident waves and reflected waves can be superposed to generate resonance when the ultrasonic waves penetrate through the base body layer, the propagation strength of the ultrasonic waves is enhanced, the ultrasonic fingerprint identification effect is ensured, and therefore the screen protection film does not need to compress the thickness to reduce ultrasonic attenuation and can give consideration to the ultrasonic wave penetrability, the attaching performance and the mechanical performance.

Description

technical field [0001] The application relates to the technical field of screen protection films, in particular to a screen protection film and electronic equipment. Background technique [0002] At present, mobile phones are usually attached with a screen protector to prevent the screen of the mobile phone from being scratched. Some mobile phones are equipped with ultrasonic fingerprint recognition devices. The ultrasonic waves emitted by ultrasonic fingerprint recognition devices are mechanical waves. The above-mentioned ultrasonic waves are easy to attenuate in the screen protective film. Usually, the thickness of the screen protective film needs to be reduced as much as possible to minimize the loss of ultrasonic waves. However, it will lead to a decline in the overall performance of the screen protector and weaken the protective function of the screen. Contents of the invention [0003] The embodiment of the present application provides a screen protection film, the ...

AI Technical Summary

Problems solved by technology

Some mobile phones are equipped with ultrasonic fingerprint recognition devices. The ultrasonic waves emitted by ultrasonic fingerprint recognition devices are mechanical waves. The above-mentioned ultrasonic waves are easy to attenuate in the screen protective film. Usually, the thickness of the screen protective film needs to be reduced as much as possible to minimize the loss of ultrasonic waves. However, it will lead to a decline in the overall performance of the screen protector and weaken the protection of the screen.

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