1 February 2008 Common voltage control technology for highly reliable active matrix liquid crystal displays
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Abstract
The relationship between flicker and a common voltage (Vcom), which directly affects the image sticking problem of liquid crystal displays, is explained. A simple symmetry of flicker with respect to Vcom is introduced. A new circuit utilizing a digital interface to generate Vcom is proposed. The circuit easily controls Vcom through the digital interface, enabling automation of the Vcom optimization. The development of an automatic Vcom-tuning system plus the Vcom optimization algorithms using the symmetry of flicker is presented. The total tuning time was 0.35 seconds regardless of screen size.
© (2008) Society of Photo-Optical Instrumentation Engineers (SPIE)
Seung-Woo Lee, "Common voltage control technology for highly reliable active matrix liquid crystal displays," Optical Engineering 47(2), 024001 (1 February 2008). https://doi.org/10.1117/1.2824378 . Submission:
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