Design of multilayer light guide films for multifunctional keypad

Xiaohong Zhou; Zongbao Fang; Heng Zhang; Linsen Chen

doi:10.1117/12.870617

15 November 2010 Design of multilayer light guide films for multifunctional keypad

Xiaohong Zhou, Zongbao Fang, Heng Zhang, Linsen Chen

Proceedings Volume 7852, LED and Display Technologies; 785204 (2010) https://doi.org/10.1117/12.870617
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Multilayer light guide films(MLGF) with LED lighting for multifunctional display has been proposed. Based on the MLGF technology, keys can be illuminated separately on different mode. The fabrication process similar to LIGA technology including laser etching, electroforming and hot nanoimprinting is developed. The depth of the light guide dots can be controlled by laser pulse numbers and the influence of dots depth to the luminance uniformity is simulated. The MLGF sample composed of 2 layers is designed and fabricated, the total thickness the module is about 0.4mm and the depth of light guide dots ranges from 0.5 um to 10um.The optical performances testing results are given. MLGF provides an ultrathin solution for multifunctional keypad and the fabrication process is high throughput, low cost for large area light guide films.

Citation Download Citation

Xiaohong Zhou, Zongbao Fang, Heng Zhang, and Linsen Chen "Design of multilayer light guide films for multifunctional keypad", Proc. SPIE 7852, LED and Display Technologies, 785204 (15 November 2010); https://doi.org/10.1117/12.870617

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