Capacitive fingerprint sensor and fingerprint imaging module
A fingerprint sensor and capacitive technology, applied in the direction of acquiring/organizing fingerprints/palmprints, instruments, printing image collection, etc., can solve the problems of occupied area, high cost, and increase, so as to reduce device manufacturing cost and process complexity , The effect of reducing the difficulty of the process
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[0064] It can be known from the background art that most of the capacitive fingerprint sensors in the prior art are based on integrated circuits on silicon wafers, which often require a crystalline silicon process, so there are problems of complicated processes and high cost.
[0065] In order to solve the technical problem, the present invention provides a capacitive fingerprint sensor, including:
[0066] a substrate; a pixel unit arranged on the surface of the substrate in an array, the pixel unit includes an amorphous switching device, the amorphous switching device includes a control end, a first end and a second end, the first end and the first end The two terminals are turned on or off under the control of the control terminal; the pixel unit further includes a first plate connected to the first terminal of the amorphous switching device, which is used to form a capacitance structure with the fingerprint, and is also used to When the amorphous switching device is turned...
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