Two Companies Promise Better Handheld Screens

by Reads (13,113)

Two Japan-based companies have separately announced technologies that could bring brighter, clearer displays to handhelds, smart phones, and other portable devices.

From Sharp Minds Come Sharp Screens

Sharp Corporation announced today the development of a new TFT liquid crystal display technology for mobile devices.

According to Sharp, the displays achieve excellent visibility in any lighting situation, while offering a wide viewing angle, high contrast ratio, and superior color reproduction.

The new displays are produced using Sharp’s proprietary Amorphous silicon and CG-Silicon manufacturing processes. They range in size from 1.5-inch to 6.5-inches, and feature color purity within a viewing cone of 160 degrees vertically and horizontally. With a symmetric viewing cone, the displays can be used in portrait mode for graphics and landscape mode for video, enabling viewing even when held in the hand or laid flat on the table. This technology is compatible with a range of products that will be offered in VGA and QVGA resolutions. The displays feature a 25ms response rate, and 300:1 contrast ratio.

The displays are slated for sampling in December of 2003, with volume production to begin next spring.

More information is available in Sharp’s press release.

Better Screens with Nanotechnology

Omron Corporation has announced a manufacturing technology that it says is capable of making brighter, clearer liquid display screens for handhelds while reducing power consumption.

The Kyoto, Japan-based company says its frontlight manufacturing technique, which applies nanotechnology, achieves a three-fold improvement in contrast ratio compared to frontlights manufactured by other companies, and screen brightness rivaling that of notebook computers (100cd/m2) through highly efficient light control.

Previous reflective screens with frontlights have offered low power consumption but with blurred pictures, while backlight methods have had sharp images but with high power consumption. Omron has developed the world’s first hybrid integration technology combining a nano prism array with a micro prism array into a frontlight, which it says offers low power consumption and a bright, sharp liquid crystal display screen.

More details are available on the Omron press release.

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