Design of a hybrid light guiding plate with high luminance for backlight system application

Jui-Wen Pan, Ya Wen Hu

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We proposed a novel backlight system, which consisted of a hybrid light guide plate (LGP) and one diffuser sheet. The hybrid LGP contains a flat plate without any microstructures and one layer of optically patterned film (OPF). Comparing with the conventional edge-lit backlight system, the on-axis luminance could be improved to 6.1\times by using the novel backlight system and the half-luminance angle decreased from 21 deg to 10 deg in vertical direction, and decreased from 21 deg to 6 deg in horizontal direction. At the same time, this design also achieved a uniformity of illumination of 89%. The design can predigest the fabrication and reduce the number of components. Moreover, since the microstructures arrangement was periodical, user could use light-emitting diodes (LEDs) on the both sides. When user turned on both side LEDs, the on-axis luminance were improved 1.7\times comparing with turning on single side LEDs.

Original languageEnglish
Article number6576145
Pages (from-to)965-971
Number of pages7
JournalIEEE/OSA Journal of Display Technology
Volume9
Issue number12
DOIs
StatePublished - 4 Dec 2013

Keywords

  • Illumination design
  • light-emitting diodes (LEDs)
  • micro-optics
  • microstructure fabrication
  • optical systems design

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