Generating random and nonoverlapping dot patterns for liquid-crystal display backlight light guides using molecular-dynamics method

Jee Gong Chang, Ming Horng Su, Cheng Tai Lee, Chi Chuan Hwang

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

This paper employs the molecular-dynamics method to generate random-dot patterns for light guides designed for backlight systems. The proposed approach combines various numerical techniques and is designed to optimize the dot-density distribution in order to satisfy the uniform luminance requirements demanded by liquid-crystal displays. In the proposed algorithm, the total domain is divided into a prescribed number of cells whose dot densities can be individually adjusted in order to fine tune the luminance conditions in accordance with the light source position and type. In addition, a variable truncation distance is implemented in each cell according to the dot density of that cell. This variable r -cut technique localizes the repulsive force effects acting within each cell in order that a high-dot-density gradient can be achieved in the overall dot distribution. Finally, an average force control technique is developed to ensure the uniformity of the dot distribution as it passes across the cell boundaries. Several illustrative examples are provided to demonstrate the robustness of the proposed molecular-dynamics dot-generation algorithm.

Original languageEnglish
Article number114910
JournalJournal of Applied Physics
Volume98
Issue number11
DOIs
Publication statusPublished - 2005 Dec 27

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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