A kind of optical device under the screen and the detection method of display screen film

Abstract

Embodiments of the present application provide an under-display optical device and a detection method for a display screen film. The under-display optical device is suitable for a terminal device with a display screen. The under-display optical device includes an optical sensor module. The sensor module is used to be arranged under the display screen to realize optical image acquisition under the screen; the optical sensor module includes: an optical sensor, which includes an optical sensing array with a plurality of photosensitive pixels, and is used to receive and detect light emitted by a light source. The detection light is reflected or scattered by the target object above the display screen to form a detection light signal, and the received detection light signal is converted into an electrical signal; wherein the electrical signal is used to detect the detection The size of the light spot formed by the optical signal on the optical sensor. In the embodiment of the present application, it can be judged whether there is a film on the display screen, and algorithm optimization is performed on the optical image acquisition or processing according to the result of the film detection.

Description

technical field [0001] The present application relates to the technical field of optical detection, in particular to an optical device under a screen and a detection method for a display screen film. Background technique [0002] With the diversification of consumer needs, the functions of terminal equipment are becoming more and more abundant, and the application of optical devices under the screen in terminal equipment is becoming more and more extensive. The under-screen optical device is applied under the display screen of the terminal device, which can realize various functions without affecting the display of the display device, such as under-screen optical fingerprint recognition, under-screen camera, etc. [0003] The optical device under the screen mainly obtains the optical signal from the light-emitting surface side of the display screen, and the stability of the optical signal determines the stability of the optical image information collected by the optical devi...

AI Technical Summary

Problems solved by technology

Generally speaking, the under-screen optical device has a preset image information acquisition algorithm before leaving the factory. The existence of the protective film makes the optical path of the light signal on the light-emitting surface of the display screen change when it reaches the under-screen optical device. The established image information collection algorithm may not be able to obtain accurate image information, which may affect the performance of the device under the screen

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