This publication describes techniques and apparatuses for the use of a light-guiding structure to route electromagnetic signals emitted by an under-display sensor module to a bezel area of a mobile device for transmission and, likewise, route electromagnetic signals received in a bezel area to an under-display sensor module. In aspects, the light-guiding structure is a light guide plate, a curved light-guiding body, or optical fibers. The techniques and apparatuses provide increased efficiency of under-display sensor modules by avoiding signal loss caused by eliminating the need to transmit and receive electrical signals through the display panel structure of a display panel module.
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Choi, Sangmoo; Kang, Chang Ju (Frank); and Zhang, Yi, "Light-Guiding Structure For Under-Display Sensor Modules", Technical Disclosure Commons, (August 17, 2020)