Thursday, May 2025

05:00 PM - 08:00 PM

Room: 220A

Session: Interactive Display and Sensors Posters

Full-Screen Fingerprint Display with Embedded Sensor Pixels Capable of Adjusting Light-Receiving Angle

Description:

In this paper, we developed an OPD sensor panel that improved the quality of the fingerprint sensor using the multi-BM optical structure. Differentiated from the optical system of the OPD panel using a conventional color filter (CF) and black matrix (BM) structure, the distance between the OPD pixel and the BM hole was increased to narrow the light receiving angle to the OPD pixel area, and the sensor image quality was enhanced by reducing the light receiving area per pixel. In order words, under the window thickness increse, the capturing width can be minimized to reduces the difference in reflection luminance gap of the ridge and valley caused by the difference in thickness of the cover layer for each product when applied to various products. Consequently, we made the novel optical structure that could secure constant sensor performance even under various cover window conditions directly to the sensor panel in various product lines such as watch, smartphones, and display for automobiles.