A novel optical sheet with microstructures design in the LED direct-lit backlight module

Chi Feng Chen, Li Ming Lu, Yung Fang Jhou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

A novel optical sheet with double-layer microstructures is proposed to improve the brightness uniformity and optical efficiency in the LED direct-lit backlight module. By means of 2D ray-tracing program design and commercial optical software simulation, we enhance the brightness uniformity from 45.3% with traditional planar diffuser to 82.7% with new optical sheet, and the average brightness is promoted about 10.9% in the same frame of backlight module which internal thickness is only 13mm. Thus, this novel optical sheet with microstructures design is useful for a slim LED direct-lit backlight module.

Original languageEnglish
Title of host publicationMechanical and Electronics Engineering III
Pages4106-4109
Number of pages4
DOIs
StatePublished - 2012
Event2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011 - Hefei, China
Duration: 23 Sep 201125 Sep 2011

Publication series

NameApplied Mechanics and Materials
Volume130-134
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011
Country/TerritoryChina
CityHefei
Period23/09/1125/09/11

Keywords

  • Diffuser sheet
  • LED direct-lit backlight module
  • Optical microstructures

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