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Optoelectronics/Displays??

System-on-glass LCDs achieve luminance of 200cd/m?

Posted: 21 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:LTPS LCD module? system-on-glass LCD? high contrast bright display? value-integrated TFT?

NEC Electronics America Inc. has introduced a 3.5-inch (8.9cm diagonal) low-temperature polysilicon (LTPS) TFT system-on-glass (SOG) LCD module with VGA resolution. The NL4864HL11-01B module combines NEC LCD Technologies' super-reflective, natural light TFT (SR-NLT) and LTPS technologies to achieve high transmissivity and luminance together with high contrast and high pixel density, enabling users to view bright and clear displays in any kind of ambient light.

With the addition of the LTPS line, NEC has expanded its core offerings to include value-integrated TFT (VIT) technology. By applying its VIT technology, which integrates peripheral circuitry on the glass substrate of the LCD module using LTPS technology, the company achieves a significant reduction in the peripheral wiring of the glass substrate and in the number of connections with external circuits. This results in pixel density that is four times higher than that of conventional 3.5-inch QVGA modules, making the new module suitable for portable devices, including PDAs and navigation devices. The VIT technology on the SOG module also significantly improves pixel aperture ratio and backlight efficiency while yielding an overall higher level of balance among attributes.

"We have seen a rapid increase in market demand for diverse functionality for portable devices that can display vivid color, even under direct sunlight," said Shigehiko Satoh, associate VP and general manager, displays strategic business unit, NEC Electronics America. "Combining our VIT and SR-NLT technologies, we have created a slim module that meets the visibility requirements of these users."

The VIT SOG LCD module offers high luminance of 200cd/m? and has a high density of 200pixel/ inch with a reflective ratio of 10 percent. The module is also equipped with a touch panel, a timing controller and a DC/DC converter.

Sample shipments of the VIT SOG LCD module are available now.




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