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EE Times-India > Optoelectronics/Displays

Solve flickering in TFTs

Posted: 09 Dec 2008     Print Version  Bookmark and Share

Keywords:Flickering  TFT 

Flickering is the opposing changes in intensity of luminosity periodically that can be observed by human eyes. This is usually caused by flashing, or contrast patterns that oscillate at a frequency which makes viewers believe the image is moving or changing. In TFT module design, there are different causes for this issue and can be avoided with various techniques in TFT panel and driver IC design. Here are some critical areas that may lead to flickering: Unstable power supply; unmatched gamma in Positive and Negative frame; low refresh rate; and unoptimised Vcom level .

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