The Research On Random Distribution And Vector Property Of LGP Pattern

Light guide plate (LGP) is an important part in medium and small-sized backlight unit (BLU). The pattern design is the most difficult part in LGP design. So we work on the distribution and the structure of the pattern in this paper.Since random dot can reduce the Morie interference effect noticeably. We did some research on the advanced random dot generation method—the molecular dynamics method (MD). We used Sobol sequence as the initial distribution of MD method to optimize the non-uniform phenomena. In order to create the random short line pattern for the vector LGP, elliptical force field was taken in stead of circular force field. Finally, the randomicity and vector was integrated successfully. Besides, we improved the single area MD to multi-areas one. We also got a conclusion that with the same density distribution and similar luminance, the LGP with random dots has no Morie interference.We used the optical simulation software named Light Tools to model a vector LGP, in which we testify that Vector LGP can improve the luminance obviously. Then we changed the pattern shape to search the relationship between changes and the luminance. Furthermore, the base angle, the maximum density as well as the size of the prism dots whose cross-section is right triangle was tried to get the best parameters.