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Thermally adaptive response‐time compensation for LCDs
Author(s) -
Lee KiChan,
Moon SeungHwan,
Kim NamDeog,
Berkeley Brian H.,
Kim Sang Soo
Publication year - 2008
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2896319
Subject(s) - liquid crystal display , response time , compensation (psychology) , linearity , materials science , sensitivity (control systems) , signal (programming language) , lookup table , controller (irrigation) , reliability (semiconductor) , computer science , thermal , layer (electronics) , signal conditioning , fabrication , electronic engineering , optoelectronics , engineering , power (physics) , computer graphics (images) , psychoanalysis , biology , psychology , quantum mechanics , agronomy , programming language , physics , meteorology , alternative medicine , pathology , composite material , medicine
Abstract— This paper presents thermally adaptive driving (TAD) technology for response‐time compensation (RTC) of an LCD with an integrated sensor. The TAD system is comprised of an analog sensor, an analog sensor signal conditioning, and a digital feedback algorithm. The integrated thermal sensor provides accurate temperature measurement of the liquid‐crystal layer. The TAD controller has an eight‐step look‐up‐table (LUT) and compensates response time based on the panel temperature. The TAD system reduces response time by nearly 34% over the temperature range 0–60°C. This paper also presents a thermal sensor which has been integrated onto an LCD. The sensor uses metal (Mo/Al) film as a temperature detection layer, and its fabrication requires no manufacturing process changes. The sensor shows very good linearity, sensitivity, and reliability.