LAUSR

Abstract On account of the limitation of the fabrication technique for the total integrated light guide plate (LGP) we developed earlier with a reflective film coated on the bottom surface of LGP, is not compatible with the mature technique of coating reflective film in industry currently, in this paper, we propose a partial integrated backlight module (BLM) that the reflective film is separated from the LGP. Firstly, we optimize the unit structures on the top surface and the bottom one of the key component partial integrated LGP (ILGP), which are the aspheric semi-cylindrical micro-concentrator structure and the micro-prism respectively. Secondly, we establish the expressions that connect micro-prism distribution with the size of the partial ILGP. By using this set of expressions, a micro-prism distribution to make the luminance uniformity of the partial integrated BLM higher can be obtained. Finally, we apply the optimized micro-structures and the expressions to design a 5.0 inch partial integrated BLM. Simulation results show that the luminance uniformity reaches 91.14%, the energy efficiency, average illuminance and average luminance are 1.62, 1.63 and 1.29 times of those in the typical one respectively. The performance of the partial integrated BLM is greater than that of the typical one, which indicates that the partial integrated BLM proposed in this paper is feasible, and the micro-prism distribution expressions have important application value.