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Optical fingerprint detection device and display equipment

A fingerprint detection and optical technology, applied in the field of optical recognition, can solve the problems of poor resistance and high sensitivity requirements

Active Publication Date: 2015-12-23
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the energy of the diffusely reflected light is weak and the difference between the valley and ridge signals of the fingerprint is small, this method has high requirements for the light transmittance of the part through which the diffusely reflected light passes and the sensitivity of the sensor, and for the interference of other light poor resistance

Method used

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  • Optical fingerprint detection device and display equipment
  • Optical fingerprint detection device and display equipment
  • Optical fingerprint detection device and display equipment

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Embodiment Construction

[0031] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0032] According to the general concept of the present invention, there is provided an optical fingerprint detection device, comprising: a light source for emitting light beams; a transparent touch panel, the touch panel has a first surface and at least one second surface adjacent to the first surface , the first surface is provided with at least one touch area for fingers or toes to touch, and the second surface is used to receive the light beam...

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Abstract

An embodiment of the invention provides an optical fingerprint detection device and display equipment. The optical fingerprint detection device includes a light source, a touch panel and a detection device. The touch panel has a first surface and at least one second surface adjacent to the first surface, the first surface is provided with at least one touch area, the second surface is used for receiving a light beam emitted from a light source and forms an included angle of smaller than 90 degrees with the first surface, so as to guide the light beam which enters the touch panel through the second surface towards the touch area of the first surface, and the touch area is such arranged that when the touch area is not touched by a finger or a toe, one side of the light beam, which is towards the touch panel and opposite to the first surface, is totally reflected; and the detection device is located outside one side of the touch panel which is opposite to the first surface, and is used for receiving the light beam reflected by the touch area and emitted from the touch panel and detecting intensity distribution of the received light beam.

Description

technical field [0001] The invention relates to the field of optical identification, in particular to an optical fingerprint detection device and a display device. Background technique [0002] With the development of fingerprint identification technology, it has been widely used in many fields, such as mobile phones, tablet computers and TVs in electronic equipment terminals; access control and safes in security protection systems. The realization methods of fingerprint collection mainly include optical, capacitive and ultrasonic imaging technologies, among which the optical fingerprint recognition technology has a relatively large recognition range and relatively low cost. [0003] At present, for example, in LCD displays, fingerprint recognition is mostly performed by using a backlight plate and an optical imaging device to perform diffuse reflection fingerprint imaging. For example, after a finger is illuminated with a backlight as a light source, the light is diffusely...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1318G06F2203/04109G02F1/13338G06F3/0421G02F1/133512G02F1/133514G02F1/133528G02F1/1368
Inventor 高健刘英明陈小川牛小辰卢鹏程
Owner BOE TECH GRP CO LTD
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