backlight

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backlight

[′bak‚līt]
(graphic arts)
A spotlight that illuminates from behind so that the subject is separated from the background; used in photography.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

backlight

With regard to electronic devices, a backlight is the light source for an LCD screen. The light typically comes from a fluorescent lamp or LED. See LCD, LED TV and CCFL.
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References in periodicals archive ?
The LED backlight driver features a step-up converter with an integrated 40V low side power MOSFET, achieving a peak efficiency of 86 percent.
LED backlight DDICs receive image data and deliver current to activate the pixels on the LCD.
Plus, the market researcher analyzes that persistently diving quotations of LED backlights will also help to speed up development of larger-sized LED-backlit LCD TVs, and therefore foresees that shipment of models with screen sizes of between 50 and 60 inches will steadily increase year by year, with 70-inch models to be targeted at the top-end segment.
This technology contributes to the down-sizing and cost-reduction of LED backlight modules.
Eros Group, the sole distributor of world-renowned brands -- Samsung, Hitachi, Candy, BenQ, Linksys by Cisco, TCL & Taurus -- and one of the leading players in consumer electronics, telecom and allied multi-products in the Middle East, announced the launch of Hitachi's new range of LED Backlight LCD TVs, which put together an ultra slim design, vivid picture quality, and eco-friendly value.
"The LCD market in MEA will grow to over 3.5 million units with Sharp planning to achieve at least 10 per cent market share of LCD TVs in the region, most of it fitted with LED backlight technology."
What differentiates an LCD from an LED is that the latter consumes less energy as opposed to an LCD -- when using LED backlight, the power consumption can be reduced by 50 per cent -- and LED offers a vivid contrast.
While a direct-lit LED backlight will project light forward across the full expanse of the display from the front, edge-lit LEDs emit light from a row of LEDs on the top and bottom of every panel, using less power.
The configurable device comes with a keyboard 92 percent the size of a standard notebook PC keyboard, a 1,024 x 600 resolution display with flush glass and LED backlight, a built-in Web camera and microphone.
One SDIO and one Compact Flash slot provide additional flexibility and the 4-inch VGA TFT, portrait oriented, touch screen, at 480 by 640 resolution with LED backlight, is easy on the eyes.
diagonal 640 x RGB x 480 (VGA) TFr-LCD with white LED backlight is suited to applications that require a high quality TFT display.
In addition, the BlackBerry 7290 features 32 MB flash memory and 4 SRAM, a bright LED backlight, as well as an optimized QWERTY keyboard for easy dialing and typing.