Design and simulation of the LGP structure for LED backlight

Wei Zhang; Hong Wang; Lingling Ji; Chuanfang Liu

doi:10.1117/12.866740

6 October 2010 Design and simulation of the LGP structure for LED backlight

Wei Zhang, Hong Wang, Lingling Ji, Chuanfang Liu

Proceedings Volume 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 765537 (2010) https://doi.org/10.1117/12.866740
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

The efficiencies and uniformities of the backlight are mostly determined by the light guide plate which is an important component of the edge-lighting LED backlight. The optical properties of the LED for most of LGP (Light Guide Plate) design model had been neglected, and multi-layer optical films had been used. In this paper the trans-mission process of light-beam within edge-lighting LGP has been analysis with an intensity distribution model of multi-LED to derive the rule of netted dots arrangement. A formula of dots arrangement and the design method were obtained. Then the edge-ray theorem was used for micro-prism which is on top surface design. At last the optical simulation software was used for simulation and analysis, we compared with other design methods and the results show that this structure can easily eliminate the phenomenon that the brightness uniformity of the place near the source is not high, at the same time it can effectively reduce the number of prism film in maintaining the brightness of the LED backlight and Simplified the structure.

Citation Download Citation

Wei Zhang, Hong Wang, Lingling Ji, and Chuanfang Liu "Design and simulation of the LGP structure for LED backlight", Proc. SPIE 7655, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 765537 (6 October 2010); https://doi.org/10.1117/12.866740

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