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A variable resolution fingerprint collection unit array and its collection method

A technology of fingerprint collection and cell array, which is applied in the field of semiconductor fingerprint collection, can solve the problem of large amount of fingerprint sensor data, achieve low resolution, and improve the image quality

Active Publication Date: 2019-11-12
JIANGSU BRMICO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in practical applications, the data volume of the 2000ppi fingerprint sensor is too large, which is more than 4 times that of the conventional 500ppi, and the resolution of 2000ppi is not required in many application fields

Method used

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  • A variable resolution fingerprint collection unit array and its collection method
  • A variable resolution fingerprint collection unit array and its collection method
  • A variable resolution fingerprint collection unit array and its collection method

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Embodiment

[0028] To achieve the resolution can be configured as figure 2 As shown, that is, the signal of each signal plate must be collected and output. exist figure 2 Among them, 200 is a fingerprint collection pixel with a resolution of 500ppi, and 200 is composed of 201, 202, 203, and 204, wherein 201, 202, 203, and 204 respectively represent a three-dimensional view of a fingerprint collection unit with a resolution of 200ppi. In actual design, it is generally required that 201, 202, 203, and 204 are all the same in size, that is, the W (width) represented by 205 corresponding to 201, 202, 203, and 204, and the L (length) represented by 206 must be equal. The distance between 11 represented by 203 and 13 represented by 204 (ie D1 represented by 207 ) is equal to the distance between 13 represented by 203 and 14 represented by 204 (ie D2 represented by 208 ). The H indicated by 215 is the thickness of the metal plate of the fingerprint sensor, which is related to the specific se...

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Abstract

The invention discloses a fingerprint collection unit array with variable resolution, including a metal pole plate of the fingerprint collection array, a 4×4 500ppi fingerprint collection array is arranged on the metal pole plate of the fingerprint collection array, and the 500ppi fingerprint collection array is The acquisition array includes four acquisition pixels with a resolution of 500ppi, and each of the acquisition pixels with a resolution of 500ppi includes four unit pixels. Through the above method, the variable resolution fingerprint collection unit array and the collection method thereof of the present invention can realize the fingerprint collection method with variable resolution through the segmentation and gate processing of the polar plate, aiming at different fingerprint collection resolutions Requirements can be realized by using a collection principle or a chip. In applications that require live detection, it can meet the requirements of high resolution. In applications that do not require high resolution, low resolution can be used to improve the image quality.

Description

technical field [0001] The invention belongs to the technical field of semiconductor fingerprint collection and relates to a fingerprint collection unit, in particular to a collection unit array with variable resolution and a collection method thereof. Background technique [0002] With the advancement of science and technology, people are becoming more and more aware of the security of their own information. With the introduction of a finger with fingerprint recognition on Iphone5S, people have seen the convenience brought by fingerprint recognition technology. In terms of technical maturity, fingerprint is the most mature identification technology at present. Fingerprint identification technology has been recognized as a biometric identification technology that is cheap, miniaturizable, and mass-produced. Biometric technology is different from traditional password and key identification technology. It has the advantages of uniqueness, not easy to copy, high recognition rat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/13
Inventor 张飞飞肖建辉
Owner JIANGSU BRMICO ELECTRONICS
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