公开(公告)号：US20240420501A1

公开(公告)日：2024-12-19

申请号：US18720749

申请日：2022-12-16

Applicant: FINGERPRINT CARDS ANACATUM IP AB

Inventor： Ju-Chin CHEN ,  Chin Jung KUO

IPC: G06V40/13 ,  G06V10/141 ,  G06V10/143 ,  G06V10/147

Abstract: An optical fingerprint sensor configured to be arranged under an at least partially transparent display panel comprises an array of color controllable light sources. The optical fingerprint sensor comprises an image sensor comprising a photodetector pixel array; an array of microlenses arranged under the color controllable light sources; a color filter layer arranged under the array of microlenses comprising alternating filter element types of different colors for adjacent subsets of pixels in the photodetector pixel array. The color controllable light sources are controllable, in response to a first finger condition, to emit light of uniform color being a mix of the colors of the filter elements, and in response to a second finger condition, to emit a color pattern including the colors of the filter elements, wherein groups of color controllable light sources are controlled to emit light corresponding to a color of the filter elements.