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A fingerprint identification display device, its manufacturing method and driving method

A display device, fingerprint recognition technology, applied in static indicators, character and pattern recognition, acquisition/organization of fingerprints/palmprints, etc. question

Active Publication Date: 2018-07-17
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, fingerprint recognition display panels generally adopt capacitive structure to realize the function of fingerprint recognition. For example, in-cell fingerprint recognition display Fingerprint identification components are easy to generate parasitic capacitance with the components inside the display panel, which makes the fingerprint identification detection signal and display signal interfere with each other, thus affecting the quality of fingerprint identification

Method used

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  • A fingerprint identification display device, its manufacturing method and driving method
  • A fingerprint identification display device, its manufacturing method and driving method
  • A fingerprint identification display device, its manufacturing method and driving method

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Embodiment Construction

[0037] The specific implementation of the fingerprint identification display device provided by the embodiment of the present invention, its manufacturing method and driving method will be described in detail below in conjunction with the accompanying drawings.

[0038] An embodiment of the present invention provides a fingerprint identification display device, such as figure 1 As shown, it includes: a plurality of photosensitive sensing units 100 arranged in an array arranged inside the display device, a plurality of identification scanning lines Finger 1 to n, and a plurality of identification output lines Read 1 and 2; wherein,

[0039] Each photosensitive unit 100 includes: a photodiode 101 for sensing a change in light intensity when a fingerprint is pressed, and a control switch transistor 102 for controlling the photodiode 101 to convert the light intensity change into a different potential output;

[0040] Each identification scanning line Finger 1 to n is in one-to-on...

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Abstract

The invention discloses a fingerprint identification display device, a manufacturing method and a driving method thereof. A plurality of photosensitive units are arranged inside the display device, and each photosensitive unit includes: a photosensitive unit for sensing changes in light intensity when a fingerprint is pressed. Diodes, and control switch transistors used to control the photodiode to convert light intensity changes into different potential outputs; the display device also has a component that emits light that can be sensed by the photodiode. When the user's finger is close to the surface of the display device, due to the uneven ridges and valleys on the skin surface of the finger, the photodiode emitted by the display device can sense the light intensity of the light irradiated on the ridges and valleys of the finger and reflected to the photodiode of the photosensitive unit Differently, the light intensity difference is converted into the current signal difference to realize the fingerprint detection. The photosensitive unit detects the fingerprint based on the photosensitive effect, which is not easy to interfere with the internal components of the display device, and it is easy to realize high-quality fingerprint detection.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a fingerprint identification display device, a manufacturing method and a driving method thereof. Background technique [0002] With the rapid development of display technology, display panels with a fingerprint recognition function have gradually spread in people's lives. At present, fingerprint recognition display panels generally adopt capacitive structure to realize the function of fingerprint recognition. For example, in-cell fingerprint recognition display The fingerprint identification component is likely to generate parasitic capacitance with the components inside the display panel, so that the fingerprint identification detection signal and the display signal interfere with each other, thereby affecting the quality of fingerprint identification. Contents of the invention [0003] In view of this, the embodiments of the present invention provide a fingerprint identifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G09G3/36
CPCG09G3/36G06V40/1318G06V40/1306G06F3/041G09G2310/0278H01L31/02024
Inventor 刘英明董学薛海林陈小川王海生丁小梁杨盛际许睿李昌峰王磊刘伟王鹏鹏
Owner BOE TECH GRP CO LTD
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