Research of an Intelligent Auto-Controlling System for LCD Screen Flicker

Ying Yun Chen, Ko Wen Jwo, Rong Seng Chang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The application of LCD has been very common. One important inspection item for LCD manufacturers is screen flicker, and its optimization has become a crucial task. An automated inspection system that aims to achieve such a goal is presented. It uses photodetector to detect the degree of LCD screen flicker and converts the detected result to digital signal by sampling circuit, acquires the degree of flickering by signal analysis, and applies signal control method to adjust LCD's VCOM voltage which optimize LCD flickering automatically to improve measurement efficiency and meet the product requirements. This translates into an improvement in efficiency by 90%, and the accuracy is also improved.

Original languageEnglish
Article number7353125
Pages (from-to)557-561
Number of pages5
JournalIEEE/OSA Journal of Display Technology
Issue number6
StatePublished - Jun 2016


  • Flicker
  • LCD
  • VCOM voltage
  • photodetector


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