Fingerprint imaging module and electronic equipment
A technology for imaging modules and electronic equipment, which is applied in the directions of acquiring/arranging fingerprints/palmprints, printing image collection, character and pattern recognition, etc. It can solve problems such as difficulty in obtaining fingerprint images and poor stability of fingerprint imaging modules, and achieve reduction Film damage phenomenon, increase hardness, improve wear resistance effect
Inactive Publication Date: 2018-08-14
SHANGHAI OXI TECH
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Problems solved by technology
[0004] However, the fingerprint imaging module of the prior art has poor stability, and it is prone to the problem that it is difficult to obtain fingerprint images during long-term use
Method used
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Embodiment Construction
[0030] It can be seen from the background art that the fingerprint imaging module in the prior art has the problem of poor stability. Now combine the structure of the fingerprint imaging module to analyze the reasons for its poor stability:
[0031] The optical fingerprint imaging module mainly includes: protective cover, optical sensor, integrated chip (IC), flexible circuit board (FPC) and electronic devices on the flexible circuit board (including light source LED), light guide plate, upper protective shell and Lower protective shell and other main components. Among them, the optical sensor is made on a glass substrate by using semiconductor technology such as amorphous silicon thin film transistor (a-Si TFT), low temperature polysilicon thin film transistor (LTPS TFT) or oxide semiconductor thin film transistor (OS TFT); after cutting , dispensing, bonding and other processes to achieve packaging.
[0032] refer to figure 1 , shows a schematic cross-sectional structure ...
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Abstract
The invention discloses a fingerprint imaging module and electronic equipment. The fingerprint imaging module comprises a light source, a sensing surface and an image sensor, wherein the light sourceis used for generating incident light; the incident light is reflected by the sensing surface to form reflected light carrying fingerprint information, the surface of the sensing surface is covered with a crystal protection layer, and the hardness of the crystal protection layer is higher than the hardness of aluminium oxide; and the image sensor is used for collecting the reflected light to obtain a fingerprint image. Through the technical scheme, the wear resistance of the crystal protection layer can be effectively improved, it is beneficial for reducing the phenomenon that a film is damaged after being used for a long term, and the stability of the fingerprint imaging module can be improved beneficially.
Description
technical field [0001] The invention relates to the field of fingerprint imaging, in particular to a fingerprint imaging module and electronic equipment. Background technique [0002] The fingerprint identification technology collects the fingerprint image of the human body through the fingerprint imaging module, and then compares it with the existing fingerprint imaging information in the fingerprint identification system to realize identity identification. Due to the convenience of use and the uniqueness of human fingerprints, fingerprint recognition technology has been widely used in various fields, such as: public security bureaus, customs and other security inspection fields, building access control systems, and consumer products such as personal computers and mobile phones, etc. [0003] The imaging methods of the imaging module used in the fingerprint identification technology include optical, capacitive, ultrasonic and other technologies. One of them is to collect t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G06K9/00
CPCG06V40/1329G06V40/1318
Inventor 曲志刚朱虹
Owner SHANGHAI OXI TECH