CPC G06V 40/1318 (2022.01) [G06F 3/042 (2013.01); G06F 3/0412 (2013.01); G06F 21/32 (2013.01)] | 19 Claims |
1. A fingerprint sensing device, comprising:
a plurality of pixel blocks, arranged in an array, and each of the pixel blocks comprising a conversion gain, wherein at least two of the conversion gains are different, and the pixel block located in a central location of the array has a minimum conversion gain,
wherein each of the pixel blocks comprises a plurality of pixel circuits, and each of the pixel circuits comprises the same conversion gain,
each of the pixel circuits comprises a floating node, and the same conversion gain of each of the pixel circuits is determined according to a capacitance value at the floating node.
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