Generation of random non-overlapping dot patterns for light guides using molecular dynamics simulations with variable r-cut and reflective boundary techniques

Jee Gong Chang, Cheng Tai Lee, Yu Bin Fang, Chi-Chuan Hwang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This paper presents a molecular dynamics (MD) scheme for the automatic generation of dot patterns for the light guides used in LCD backlight modules. Several MD computational techniques are integrated with the conventional MD scheme to enable the adjustment of the dot density in specific regions of the light guide in order to create a dot distribution with a high dot density variation and a high spatial uniformity. These techniques include the cell division technique, the variable r-cut technique, the boundary smoothing technique and the reflective boundary condition. The reflective boundary condition enables a precise control of the dot density within each cell, and is instrumental in achieving a dot distribution with both a high dot density variation and a high spatial uniformity. The performance of the proposed dot generation scheme is verified by considering the practical example of the dot pattern design of a light guide with a single LED light source located in the lower-right corner. The numerical results confirm the ability of the proposed method to achieve an even luminance condition by establishing a dot pattern whose density increases concentrically with an increasing distance from the light source.

Original languageEnglish
Pages (from-to)851-862
Number of pages12
JournalComputer Physics Communications
Volume177
Issue number11
DOIs
Publication statusPublished - 2007 Dec 1

Fingerprint

Molecular dynamics
molecular dynamics
Light sources
Computer simulation
Boundary conditions
simulation
Liquid crystal displays
light sources
Light emitting diodes
Luminance
boundary conditions
cell division
Cells
luminance
smoothing
light emitting diodes
modules
adjusting
cells

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Physics and Astronomy(all)

Cite this

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abstract = "This paper presents a molecular dynamics (MD) scheme for the automatic generation of dot patterns for the light guides used in LCD backlight modules. Several MD computational techniques are integrated with the conventional MD scheme to enable the adjustment of the dot density in specific regions of the light guide in order to create a dot distribution with a high dot density variation and a high spatial uniformity. These techniques include the cell division technique, the variable r-cut technique, the boundary smoothing technique and the reflective boundary condition. The reflective boundary condition enables a precise control of the dot density within each cell, and is instrumental in achieving a dot distribution with both a high dot density variation and a high spatial uniformity. The performance of the proposed dot generation scheme is verified by considering the practical example of the dot pattern design of a light guide with a single LED light source located in the lower-right corner. The numerical results confirm the ability of the proposed method to achieve an even luminance condition by establishing a dot pattern whose density increases concentrically with an increasing distance from the light source.",
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Generation of random non-overlapping dot patterns for light guides using molecular dynamics simulations with variable r-cut and reflective boundary techniques. / Chang, Jee Gong; Lee, Cheng Tai; Fang, Yu Bin; Hwang, Chi-Chuan.

In: Computer Physics Communications, Vol. 177, No. 11, 01.12.2007, p. 851-862.

Research output: Contribution to journalArticle

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