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A driving method and equipment of a fingerprint identification device

A technology of fingerprint identification and driving method, which is applied in the directions of character and pattern recognition, acquisition/organization of fingerprints/palmprints, instruments, etc., and can solve the problems of reducing the effect of fingerprint recognition and inaccurate fingerprints

Active Publication Date: 2019-04-05
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the fingerprint identification device collects fingerprints, due to the characteristics of the photosensitive element, afterimages will occur, which will lead to inaccurate fingerprints collected and reduce the fingerprint identification effect.

Method used

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  • A driving method and equipment of a fingerprint identification device
  • A driving method and equipment of a fingerprint identification device
  • A driving method and equipment of a fingerprint identification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] During specific implementation, the fingerprint entry stage can have multiple fingerprint collection cycles. Wherein, the number of fingerprint collection cycles can be designed and determined according to the actual application environment, and is not limited here.

[0116] In the embodiment of the present invention, the same photosensitive element receives the light in the afterimage area and the light in the image area at least at least a preset afterimage elimination period, which may specifically include:

[0117] Control the point light sources of the same light-emitting sequence in two adjacent fingerprint collection periods to emit light at least at a preset time interval for afterimage elimination, so that the same photosensitive element receives the light in the afterimage area and the light in the image area in two adjacent fingerprint collection periods. There is a condition that there is at least a preset afterimage removal duration between them.

[0118] In...

Embodiment 2

[0182] The structural schematic diagram of the display panel corresponding to this embodiment is as follows Figure 7a and Figure 16 As shown, it is modified for the implementation of the fingerprint collection period in the first embodiment. The following only describes the differences between this embodiment and the first embodiment, and the similarities will not be repeated here.

[0183] During specific implementation, in the embodiment of the present invention, the invalid area corresponding to each point light source that emits light in the nth fingerprint collection frame of the next fingerprint collection cycle can be made to cover the nth fingerprint collection frame of the previous fingerprint collection cycle The afterimage area corresponding to each point light source that emits light. In this way, the influence of the afterimage area on the accuracy of the collected fingerprints can be further avoided.

[0184] Taking the fingerprint collection cycle including...

Embodiment 3

[0186] The structural schematic diagram of the display panel corresponding to this embodiment is as follows Figure 17 As shown, it is modified for the implementation of the fingerprint identification period in the first embodiment. The following only describes the differences between this embodiment and the first embodiment, and the similarities will not be repeated here.

[0187] During specific implementation, in the embodiment of the present invention, the fingerprint recognition period may be divided into at least two consecutive fingerprint recognition frames. Wherein, two adjacent fingerprint identification frames are used as an identification frame group, and at least two continuous fingerprint identification frames are divided into continuous X identification frame groups; wherein, in the same identification frame group, the next fingerprint identification frame The invalid area corresponding to the luminous point light source covers the afterimage area corresponding...

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Abstract

The invention discloses a driving method and equipment for a fingerprint recognition device, and the method comprises the steps: controlling the same photosensitive element to receive light of a ghostimage area and light of an image receiving area at least at intervals for a preset ghost image elimination duration in a fingerprint input stage; Therefore, the photosensitive element generates a ghost image after receiving the light in the ghost image area; According to the embodiment of the invention, the residual image can be dissipated to the error acceptable range through the preset residualimage elimination duration, so that the photosensitive element can be regarded as that the residual image is eliminated when receiving the light in the image region, the accuracy of the electric signal generated by the photosensitive element is improved, the accuracy of the collected fingerprint is further improved, and the fingerprint identification effect is improved.

Description

technical field [0001] The invention relates to the technical field of driving, in particular to a driving method and equipment for a fingerprint identification device. Background technique [0002] With the rapid development of technology, mobile products with biometric functions have gradually entered people's lives. Since the fingerprint is an innate and unique feature of the human body that can be distinguished from others, it is composed of a series of valleys and ridges on the surface of the fingertip skin. Details such as ends, arches, tent-like arches, left-handed, right-handed, helical or double-handed, etc., determine the unique characteristics of the fingerprint and thus receive a lot of attention. At present, people combine a photosensitive element with a fingerprint identification device to realize a fingerprint identification function. However, when the fingerprint identification device collects fingerprints, due to the characteristics of the photosensitive e...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1318G06V40/1306G06V40/1347G06V40/1365G06V40/50
Inventor 李昌峰王海生王雷刘英明丁小梁李亚鹏马媛媛王亚薇
Owner BOE TECH GRP CO LTD
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