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Fingerprint detection device and mobile terminal

A fingerprint detection and fingerprint technology, applied in the direction of acquiring/organizing fingerprints/palmprints, character and pattern recognition, instruments, etc., can solve the problems of immature design and production technology, high manufacturing and application costs, and low manufacturing and application costs , to achieve the effect of improving technology integration, low production and application costs, and reducing application costs

Active Publication Date: 2017-11-28
SHENZHEN GOODIX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design and production technology of the capacitive touch chip is relatively mature, and the manufacturing and application costs are relatively low; the control chip of the capacitive fingerprint detection device is a special control chip, and the design and production technology is not yet mature, so the manufacturing and application costs are relatively high.

Method used

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  • Fingerprint detection device and mobile terminal
  • Fingerprint detection device and mobile terminal
  • Fingerprint detection device and mobile terminal

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Embodiment Construction

[0047] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] In view of the similar detection and scanning methods of capacitive fingerprint scanning technology and capacitive touch screen detection technology, the present invention uses a capacitive touch chip to replace the special control chip of the existing capacitive fingerprint detection device to achieve the purpose of reducing application costs. The fingerprint identification device of the present invention is especially suitable for capacitive touch terminals, and realizes fingerprint detection and identification by multiplexing the capacitive touch chips of the capacitive touch terminal itself, which has high technical integration and low application cost.

[0049] see figure 1 , figure 2 , the first embodiment of the fingerprint detection device of the present invention is proposed, the fingerprint detectio...

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Abstract

The invention discloses a fingerprint detection device and a mobile terminal. The fingerprint detection device includes a capacitive fingerprint sensor and a capacitive touch chip electrically connected to the capacitive fingerprint sensor, and the capacitive fingerprint sensor is used for collecting fingerprint information , and convert the fingerprint information into an analog signal; the capacitive touch chip is used to convert the analog signal into a digital signal, and generate fingerprint image information according to the digital signal. Compared with the special control chip of the fingerprint detection device in the prior art, the design and production technology of the capacitive touch chip is more mature, and the production and application costs are lower. Especially when applied to a capacitive touch terminal, the capacitive touch chip of the capacitive touch terminal itself can be reused to realize fingerprint detection and identification, which greatly improves the technical integration and reduces the application cost.

Description

technical field [0001] The invention relates to the technical field of fingerprint detection, in particular to a capacitive fingerprint detection device and a mobile terminal with the fingerprint detection device. Background technique [0002] The capacitive fingerprint detection device can be applied to various terminal devices, and has been gradually applied to capacitive touch screen mobile terminals. An existing capacitive fingerprint detection device includes a capacitive fingerprint sensor and a control chip. Electrode pattern of capacitive fingerprint sensor such as figure 1 As shown, it includes a ring-shaped emitting electrode b and a plurality of sensing electrodes a. The distribution pattern of the sensing electrode a is as follows figure 2 As shown, they are arranged in Cm rows and Rn columns, a total of mxn. The control chip needs to have multiple signal channels, and the multiple signal channels are respectively connected to the sensing electrode a and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06F3/044
CPCG06F3/0446G06F3/04166G06V40/1318G06V40/1306G06F1/325H03K17/962G06F3/044
Inventor 冉锐杨孟达王智攀张键洋卓光明钟华
Owner SHENZHEN GOODIX TECH CO LTD
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