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P‐56: Automatic Delay Compensation for a CCFL Backlight System
Author(s) -
Nam Hyoungsik,
Oh Kwan Young,
Shin ByungHyuk,
Kim Seon Ki,
Kim Nam Deog,
Berkeley Brian H.,
Kim Sang Soo
Publication year - 2009
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3256536
Subject(s) - backlight , compensation (psychology) , capacitance , computer science , liquid crystal display , parasitic capacitance , electronic engineering , electrode , engineering , physics , psychology , quantum mechanics , psychoanalysis , operating system
Abstract Recently, a single phase driving method has been adopted for driving CCFL lamps to provide a low cost implementation. However, high voltage driving signals are coupled to pixel electrodes through parasitic capacitance between the lamps and panel electrodes, generating artifacts in the display. This paper describes the analysis results of this phenomenon and the proposed automatic delay compensation scheme eliminates the artifacts caused by the coupling effect.