Encapsulation structure and encapsulation method of optical fingerprint chip
A fingerprint chip and packaging structure technology, applied in the direction of acquiring/organizing fingerprints/palmprints, instruments, electrical components, etc., can solve the problem of low fingerprint recognition accuracy, and achieve the effect of improving accuracy and avoiding crosstalk.
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[0075] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0076] At present, when the optical fingerprint chip is packaged, a transparent cover is generally directly arranged on the front side of the optical fingerprint chip, and the photosensitive pixels on the front are packaged and protected. There is a filter between the transparent cover and the photosensitive chip. To filter out stray light. However, this method cannot avoid the problem of crosstalk between different photosensitive pixels...
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