Omron, of Kyoto, Japan, has announced that its research labs produced a technique--dubbed hybrid-integration technology--that uses very small, or "nano," prism arrays to achieve a threefold improvement in contrast ratio compared to conventional front-lighting methods. The tiny prism array prevents reflection of unnecessary light and produces clear screen images.
The design also allowed a reduction in number of light-emitting diodes(), the screen's light source, and as a a result reduces power consumption, the company said.
Existing front-lighting methods, in which LEDs light up the front of a liquid-crystal display (LCD), offer modest power consumption but low-contrast images. Backlighting methods, which put the LED at the back of the display, produce high-contrast images but consume more power.
The screen brightness produced by the new technology could rival that of notebook computers, the company said.
The growth in, handheld PCs, digital cameras and video-image transmission has generated demand for brighter and clearer LCD screens.