Solution strategy of optimal dot pattern design for light guide using in backlight

Jee-Gong Chang; Yu-Bin Fang; Chi-Feng Lin

doi:10.1117/12.668113

1 February 2006 Solution strategy of optimal dot pattern design for light guide using in backlight

Jee-Gong Chang, Yu-Bin Fang, Chi-Feng Lin

Proceedings Volume 6034, ICO20: Optical Design and Fabrication; 60340T (2006) https://doi.org/10.1117/12.668113
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

This paper proposes a solution strategy for the optimal design of the dot pattern located on light guide plates used to illuminate LCD displays. The proposed dot pattern optimization procedure is based on a geometrical dot area ratio parameter, which is strongly related to the physical luminance properties. Compared to conventional optimization procedures, the use of this parameter minimizes the number of dot pattern parameters which must be considered simultaneously when developing the optimal dot pattern design. The proposed design method utilizes the simple false position method to determine the optimal dot area ratio for each individual section of the light guide. Two regulation methods are then proposed to fine-tune the dot radius and the dot spacing, respectively, in an attempt to achieve uniform-luminance conditions across the complete light guide. The validity of the proposed solution strategy is confirmed through a series of simulations. Compared to other optimization procedures, the proposed solution strategy has the significant advantage of being readily implemented into existing optical commercial programs.

Citation Download Citation

Jee-Gong Chang, Yu-Bin Fang, and Chi-Feng Lin "Solution strategy of optimal dot pattern design for light guide using in backlight", Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 60340T (1 February 2006); https://doi.org/10.1117/12.668113

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