Design of mosaic-form LED backlight module

Yen Hsing Lu*, Chung-Hao Tien

*Corresponding author for this work

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


A quadratic light-guide with micro-prismatic bump structures for illumination of the liquid crystal display (LCD) system has been developed. The functional light-guide combining with a side-emitting light-emitting-diode (LED) and a concentric prism sheet (CPS) is able to illuminate a uniformly square distribution over the LC panel. Through the assembly of these kinds of optical elements, the mosaic-form LED backlight module can be applied to any dimension of a panel associated with relational parameters with proportional quantities. According to our simulation, the proposed system can increase the output efficiency from roughly 50% (without any optical elements) to 75% and maintain the brightness uniformity of 88.3% as well.

Original languageEnglish
Title of host publicationAD'07 - Proceedings of Asia Display 2007
Number of pages5
StatePublished - Mar 2007
EventAsia Display 2007, AD'07 - Shanghai, China
Duration: 12 Mar 200716 Mar 2007

Publication series

NameAD'07 - Proceedings of Asia Display 2007


ConferenceAsia Display 2007, AD'07


  • LED backlight
  • Micro-prismatic bump structure
  • Mosaic-form


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