P‐56: A Micro‐LED Based Pixel‐Level Optical System: Design and Integration

A nano‐imprinted lens array for sub‐pixel level light collection is designed and demonstrated with a micro‐LED display backplane. In order to gather the light emission of micro‐LED display to the maximum extend, an even aspheric lens structure is refined considering both LED chip and the encapsulation. The optimized lens design is applied in a Micro‐LED display module which serves as picture generation unit of a head‐up display system. The display module shows luminance over 90,000 nits, with light collection contribution of 2.9 times in the desired direction.