Optical density measurement of TFT-LCD by PMT coupled monochrome LED

Fu Ming Tzu, Jung Hua Chou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A fast and innovative method using a monochromatic red LED to measure the optical density of black matrix is developed in this study. The results show that the 3-Watt monochromatic red LED performs better than that of the currently used 100-Watt halogen lamp by reducing the pumping speed by 40% and the 3-sigma standard deviation of the test samples is also superior by 40%. The measurement difference for average OD values is within 1% between both light sources. In addition, using standard glass, the monochromatic red LED demonstrates accuracy within 1.58%. Therefore, the monochromatic red LED can substitute the halogen lamp currently used the TFT-LCD industry to measure the optical density of BM layer.

Original languageEnglish
Title of host publication2008 10th International Conference on Electronic Materials and Packaging, EMAP 2008
Pages65-68
Number of pages4
DOIs
Publication statusPublished - 2008 Dec 1
Event2008 10th International Conference on Electronic Materials and Packaging, EMAP 2008 - Taipei, Taiwan
Duration: 2008 Oct 222008 Oct 24

Publication series

Name2008 10th International Conference on Electronic Materials and Packaging, EMAP 2008

Other

Other2008 10th International Conference on Electronic Materials and Packaging, EMAP 2008
CountryTaiwan
CityTaipei
Period08-10-2208-10-24

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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