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LCD modules operate in high ambient light

Posted: 19 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:LCD? TFT LCD? NEC? SR-NLT? display?

TFT LCD module from NEC Electronics

NEC Electronics America Inc. has expanded its portfolio of mobile LCD modules with the addition of two amorphous-silicon TFT LCD modules from NEC LCD Technologies Ltd. The 2.7-inch and 3.5-inch LCD modules feature a balance of high luminance and high reflectivity for portable industrial applications such as portable global positioning terminals and multifunctional information devices that require high-quality color imaging in indoor and outdoor environments with high ambient light.

Featuring NEC LCD Technologies' super-reflective natural light (SR-NLT) TFT technology, the display modules offer a choice of two operating modes: a transmissive mode using a backlight system as the spectral source, and a reflective mode using ambient light as the spectral source. Both modules include a touch panel, timing controller and DC/DC converter that help manufacturers of portable information devices realize lower development costs, shorter lead times and overall miniaturization, said the company. Both devices offer a response time of 30ms and an operating temperature range of -20C to 70C.

The 2.7-inch display module (part number NL2432HC17-04B) offers a reflective ratio of 35 percent via an optimized optical design based on the SR-NLT technology. In transmissive mode, the module has a brightness level of 100cd/m?. This focus on reflection quality, even in direct sunlight, makes this LCD module suitable for portable global positioning terminals.

The optimization also enables the 3.5-inch display module (part number NL2432HC22-41B) to achieve a high luminance level of 200cd/m? and a high reflective ratio of 15 percent. High contrast ratios of 150:1 in transmissive mode and 15:1 in reflective mode also help provide a bright and clear display in any kind of ambient light, making this module suitable for multifunctional portable information devices.

Samples of the 2.7-inch module are expected to begin shipping this month and the 3.5-inch display module is expected to be available Q1 2007.

- Gina Roos

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