Display module

A display module and display pixel technology, applied in character and pattern recognition, optics, instruments, etc., can solve problems such as performance improvement, and achieve the effects of maintaining light consistency, improving signal-to-noise ratio, and reducing stray light components

Inactive Publication Date: 2019-03-05
SHANGHAI OXI TECH
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Problems solved by technology

[0005] The structure of the existing display module with integrated fingerprint r

Method used

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Embodiment Construction

[0043] As mentioned in the background, in the prior art, the capacitive fingerprint imaging technology is mostly integrated with the display module of the self-luminous display panel.

[0044] In order to solve the above-mentioned technical problem, the present invention provides a display module, through the use of the photosensitive device integrated in the liquid crystal display panel and the point-shaped image-picking light source, under the premise of ensuring the display effect, a clear image can be obtained. Fingerprint images, so as to better realize the integration of fingerprint recognition and image display functions.

[0045] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] refer to figure 1 , shows a schematic cross-sectional structure diagram of the first embodiment of the...

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Abstract

A display module includes a liquid crystal display panel including a plurality of display pixel units, wherein the display pixel units includes a transmission area and an imtransmission area, and a photosensitive device is arranged in at least partially of the imtransmission areas of the displayg pixel units; a dot-shaped drawing light source located on one side of the liquid crystal display panel; a protective layer located above the liquid crystal display panel and the dot-shaped drawing light source, wherein the surface of the protective layer which is backward to the liquid crystal displaypanel and the surface of the dot pattern light source is a sensing surface, and the light generated by the dot pattern light source is obliquely projected into the protective layer and transmitted tothe sensing surface through the protective layer to form the reflected light carrying the fingerprint information; a photosensitive device that acquires the reflected light to obtain a fingerprint image. Through the use of the photosensitive device integrated in LCD panel and the spot light source, the display module can get clear fingerprint image on the premise of ensuring the display effect, so as to better realize the integration of fingerprint identification and image display function.

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...

Claims

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Application Information

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IPC IPC(8): G06K9/00G02F1/1335
CPCG02F1/133512G02F1/133514G02F1/133528G06V40/1318
Inventor 凌严朱虹
Owner SHANGHAI OXI TECH
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