Investigation of starburst phenomenon using ray tracing for touch screen panels

•We examine the effect of metal meshes on the starburst phenomenon of touch panels.•The gentle slope of the patterned edges generates the starburst patterns.•The starburst patterns were suppressed substantially by a light-absorbing material.•A random metal grid shows many but weakened threadlike bea...

Full description

Saved in:
Bibliographic Details
Published in:Displays 2014-07, Vol.35 (3), p.141-146
Main Authors: Shin, Dong-Kyun, Park, Jongwoon
Format: Article
Language:English
Subjects:
Applied sciences
Display
Electronics
Exact sciences and technology
Metal mesh
Ray tracing
Starburst
Touch screen panel (TSP)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•We examine the effect of metal meshes on the starburst phenomenon of touch panels.•The gentle slope of the patterned edges generates the starburst patterns.•The starburst patterns were suppressed substantially by a light-absorbing material.•A random metal grid shows many but weakened threadlike beams. We investigate the effect of the metal pattern shape (i.e., square, hexagonal, and random grids) on the starburst phenomenon of touch screen panels (TSPs) based on opaque metallic grids. It is demonstrated that a standalone random metal grid can suppress the starburst phenomenon to a great extent. By way of ray tracing simulation, we have found that specular reflection of light on the gentle slope of the patterned edges of metallic grids contributes to the generation of starburst patterns. It is also addressed that employing a light-absorbing material and increasing metal grid spacing can reduce the intensity of starburst patterns.
ISSN:0141-9382
1872-7387
DOI:10.1016/j.displa.2014.05.004