Optical fingerprint sensor and display screen

A sensor and display technology, applied in the direction of acquiring/arranging fingerprints/palmprints, instruments, characters and pattern recognition, etc., can solve problems such as limitations, fingerprint sensing area, fingerprint sensor thickness, etc., to avoid Limitation, the effect of expanding the area

Active Publication Date: 2019-10-18
HKC CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of this application is to propose an optical fingerprint sensor, which aims to solve the problem that the sensing area of ​​the fingerprint in the prior art is limited by the thickness of the fingerprint sensor

Method used

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  • Optical fingerprint sensor and display screen
  • Optical fingerprint sensor and display screen
  • Optical fingerprint sensor and display screen

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relationship between the components in a certain posture (as shown in the drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions involving "...

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PUM

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Abstract

The invention discloses an optical fingerprint sensor. The optical fingerprint sensor comprises a first substrate; a plurality of sensor units arranged on the first substrate. Each sensor unit comprises a photosensitive diode and a thin film transistor electrically connected with the photosensitive diode. The sensor comprises a first optical layer arranged on the plurality of sensor units. The first optical layer comprises a plurality of convex lenses which are arranged opposite to the photosensitive diodes so as to focus light to the photosensitive diodes. The invention further discloses a display screen. According to the optical fingerprint sensor provided by the invention, areas can be infinitely enlarged on the premise of not increasing the thickness, and the limitation of a fingerprint sensing area caused by the influence of the thickness of the optical fingerprint sensor is avoided.

Description

technical field [0001] The present application relates to the technical field of fingerprint sensing, in particular to an optical fingerprint sensor and a display screen. Background technique [0002] With the development of fingerprint sensing technology, more and more electronic devices use fingerprint recognition to verify identity for operation. In general electronic devices, most of the fingerprint sensors used are capacitive sensors, resistive sensors or ultrasonic sensors. The above-mentioned fingerprint sensors cannot directly collect fingerprints through the display screen of the electronic device for fingerprint recognition, which does not conform to the development trend of full-screen electronic devices. For electronic devices using optical fingerprint recognition technology, the general practice is to make a fingerprint sensor chip and paste it inside the electronic device, and a lens combination needs to be set under the display screen to focus the collected fi...

Claims

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Application Information

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IPC IPC(8): G06K9/00G09F9/33
CPCG09F9/33G06V40/1318
Inventor 卓恩宗丁洁许哲豪
Owner HKC CORP LTD
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