Detection device of fingerprint sensor, fingerprint sensor, and electronic device
A fingerprint sensor and detection device technology, applied in the direction of acquiring/arranging fingerprints/palmprints, instruments, characters and pattern recognition, etc., can solve the problems of low detection efficiency and inconvenience, achieve high quality and improve detection efficiency
Pending Publication Date: 2017-07-21
柳州梓博科技有限公司
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Problems solved by technology
[0004] However, the current detection of fingerprint sensors needs to apply fingers or other conductive materials (such as conductive glue) on the fingerprint sensor, and then detect the sensing signal of each sensor electrode to judge whether it meets the requirements, which is very inconvenient and the detection efficiency is low.
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[0084] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
[0085] The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0086] Furthermore, the described features and structures may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or with other structures, components, and the like. In other instances, well-known stru...
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The invention discloses a detection device used for detecting a fingerprint sensor. The fingerprint sensor comprises electrodes, and the electrodes comprise sensor electrodes and conductive protection elements around the sensor electrodes. The detection device comprises a driving module connected with the conductive protection elements and used for providing driving signals for the conductive protection elements; a receiving module connected with the sensor electrodes and used for receiving sensing signals output by the sensor electrodes; and a determination module connected with the receiving module and used for determining whether the sensor electrodes have defects according to the sensing signals of the receiving module. According to the detection device, when it is detected whether the fingerprint sensor has defects, the detection can be conducted without applying a finger or a conductor to the fingerprint sensor, and the detection efficiency is improved. The invention also provides a fingerprint sensor with high quality and an electronic device.
Description
technical field [0001] The invention relates to the field of fingerprint sensors, in particular to a detection method and detection device for detecting a fingerprint sensor, a fingerprint sensor and electronic equipment. Background technique [0002] A self-capacitive fingerprint sensor includes a detection circuit and sensor electrodes arranged in a two-dimensional array. When in use, the detection circuit applies a driving signal to each sensor electrode and detects the induction signal of each sensor electrode, and each sensor electrode constitutes a pixel of the fingerprint sensor. In this way, when the finger acts on the fingerprint sensor, each sensor electrode can detect the voltage change caused by the corresponding point of the fingerprint, so that the depth of the corresponding point of the fingerprint can be described, and the pattern of the entire fingerprint can be described together with other sensor electrodes (pixels), forming fingerprint image. [0003] H...
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IPC IPC(8): G06K9/00
CPCG06V40/1306
Inventor 田浦延
Owner 柳州梓博科技有限公司