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Optoelectronics/Displays??

TFT-LCDs offer 'slimmest' border, 'highest' contrast ratio

Posted: 31 Jul 2007 ?? ?Print Version ?Bookmark and Share

Keywords:slim transflective panel? mobile device TFT-LCD? high quality resolution?

AUO AMVA display

AU Optronics Corp. claims two breakthrough technologies for mobile device applicationsa 2.2-inch transflective panel featuring the world's slimmest border of 0.9mm, and a 2.7-inch panel with the world's highest contrast ratio of 2,100:1.

Due to the growing need for high contrast ratio and wide viewing angle, the border width for small-sized panel is becoming increasingly vital. AUO's 2.2-inch mobile device TFT-LCD has the world's slimmest border of 0.9mm on both the right and left sides. This is a half size smaller than current products on the market today. The upper side border width can also be reduced to merely 1.2mm. With this slimmer border design, AUO's 2.2-inch mobile device TFT-LCD can increase the active area, while maintaining the same high quality resolution and excellent display quality performance.

As multimedia playing functions in portable electronic devices are becoming more popular, high contrast ratio and wide viewing angle are becoming essential features for small-sized displays. By using novel domains-forming technology along with specific pixel structure design, AUO's AMVA-mobile technology is able to maintain stable liquid crystal molecular directions and provide higher transmittance.

By utilizing leading multidomain vertical alignment design, the AMVA-mobile technology effectively restrains dark state light leakage and increases the aperture ratio, resulting in a contrast ratio of up to 2,100:1. The AUO AMVA-mobile technology has been successfully applied on 2.7-inch mobile QVGA resolution mobile displays to enable video calls and playing on mobile devices.

"The arrival of the 3G era accelerates mobile handsets to become lighter, thinner, brighter, more elegant and more interactive human-interfaced. To enhance contrast ratio and improve motion blur is also crucial for mobile devices displays," said CT Liu, AUO vice president and general manager of consumer product display operations, AUO. "Thus, AUO has successfully implemented large-sized TFT-LCD technologies to small- and medium-sized displays, including AMVA-mobile technology, ASPD-mobile technology and APE-mobile technology.

AUO AMVA-mobile technology provides features of high contrast ratio and wide viewing angle, offering clear image quality on GPS. ASPD-mobile technology can improve response time to 4ms gray-to-gray for the enjoyment of playing handheld video games. APE-mobile technology can enhance the image contrast and reduce system power up to 50 percent and maintain image luminance.




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