Fingerprint detection device and mobile terminal

A fingerprint detection and fingerprint technology, which is applied in the acquisition/organization of fingerprints/palmprints, character and pattern recognition, instruments, etc., can solve the problems of high manufacturing and application costs, low manufacturing and application costs, and immature design and production technologies. , to achieve the effect of low production and application costs, lower application costs, and improved technology integration

Active Publication Date: 2014-04-23
SHENZHEN GOODIX TECH CO LTD
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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 capa...

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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-control chip electrically connected with the capacitive fingerprint sensor. The capacitive fingerprint sensor is used for acquiring fingerprint information and converting the fingerprint information into an analog signal; the capacitive touch-control chip is used for converting the analog signal into a digital signal and generating fingerprint image information according to the digital signal. Compared with special-purpose control chip of a fingerprint detection device in the prior art, design and production technologies of the capacitive touch-control chip are more mature and production and application costs are lower. Especially when the fingerprint detection device is applied to a capacitive touch-control terminal, a capacitive touch-control chip of the capacitive touch-control terminal can be reused to realize fingerprint detection and identification so that technology integration degree is improved significantly and application cost is reduced.

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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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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