Display module

Abstract

A display module includes an optical sensor including a flexible plastic substrate and a device layer positioned on the flexible plastic substrate; A self-luminescent display panel located above the optical sensor; A point light source located on one side of the self-luminescent display panel and the optical sensor; A protective cover plate positioned above the point light source and the self-luminescence display panel; The surface of the protective cover plate opposite to the self-luminescent display panel is a sensing surface, and the light generated by the point-shaped light source is obliquely projected onto the protective cover plate and transmitted to the sensing surface, thereby forming reflected light with fingerprint information on the sensing surface; An optical sensor is used toacquire reflected light to obtain a fingerprint image. Through the use of flexible plastic substrate, on the premise of ensuring the manufacturing yield of the display module, the thickness of the optical sensor is reduced, so as to achieve the purpose of reducing the thickness of the display module, so as to better achieve both the manufacturing yield and the module thinning.

Description

technical field [0001] The invention relates to the field of optical fingerprint identification, in particular to a display module. Background technique [0002] Fingerprint imaging recognition technology is to collect the fingerprint image of the human body through the fingerprint sensor, and then compare it with the existing fingerprint imaging information in the system to judge whether it is correct or not, and then realize the technology of identity recognition. Due to its ease of use and the uniqueness of human fingerprints, fingerprint recognition technology has been widely used in various fields. For example, security inspection areas such as public security bureaus and customs, building access control systems, and consumer products such as personal computers and mobile phones, etc. [0003] The realization of fingerprint imaging recognition technology includes optical imaging, capacitive imaging, ultrasonic imaging and other technologies. Relatively speaking, the o...

AI Technical Summary

Problems solved by technology

[0005] However, the thickness of the display module with fingerprint recognition function is often relatively large, and the existing thinning process will cause a high yield loss in the manufacturing process of the display module, and it is difficult to ensure the production yield of the display module.

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