Subjects stared into a light box containing light-emitting diodes (LEDs) for 60 minutes in each experiment.
Light-emitting diodes--semiconductors that emit light when electricity passes through them--have been around since the 1960s.
Made by Dutch electronics giant Philips, the bulb swaps filaments for light-emitting diodes to provide illumination.
But to an electronics engineer, an amplifier is really just two diodes connected face to face.
The use of organic light-emitting diodes allows screens to be made thinner and more flexible than before.
The maker of light emitting diodes, or LED, drivers, issued a second-quarter warning, lowering its revenue projection.
Light emitting diodes, or LEDs, could work nicely as replacements for incandescent and compact fluorescent light bulbs.
It uses rows of light-emitting diodes that cost only 3 cents each to stimulate the fluorescent tags.
The inventors state that this could be used in flexible and efficient solar cells and light emitting diodes.
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Light-emitting diodes have progressed from simple red indicators on electronic products to become torches, streetlights and car headlights.
By 1930, such vacuum-tube diodes had all but replaced the quirkier crystal detector.
Korean electronics firm Samsung has hit back in a patent dispute with Osram, a rival maker of light emitting diodes (LEDs).
Diodes are essential in radios to turn rapidly oscillating radio waves into a smoother direct-current signal that can power a speaker.
The chaos is compounded by picky engineers, who like to design in their favorite diodes rather than standardize around a single version.
Researchers are working on a new generation of white light-emitting diodes (LEDs) that would be much more efficient than existing light bulbs.
This printing process is already used in organic solar cells and organic light-emitting diodes (OLEDs) that form the displays of mobile phones.
But high-power light-emitting diodes (LEDs) promise a brighter future in outdoor illumination.
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Microvision's current pico projection engine uses red and blue laser diodes and a frequency-doubled "synthetic" green laser to create a full color image.
Using different types of light bulb can also help reduce energy usage and makers of light emitting diodes (LEDs) have seen demand surge.
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In addition a ring of IR light emitting diodes (LEDs) are used to illuminate the hand and determine the position of the user's fingertips.
Earlier this month, Dr. Bruchas and his colleagues made public their development of light-emitting diodes thousands of times smaller than those currently available commercially.
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Strips of eco-friendly, light-emitting diodes, known as LED lighting, are flexible and can be used to illuminate architectural details in a rainbow of colors.
Since this device is already commonly employed to cool laser diodes, adapting it to control the new switches in bulk should be a cinch.
Goeken's PolyBrite International of Naperville, Ill. looks to leapfrog the little fluorescents with energy-saving bulbs that rely on light-emitting diodes, which are glowing semiconductor chips.
Richardson expects that transparent Organic Light-Emitting Diodes (OLEDs) will be embedded in structural glass, so that flat clear panels will provide a plethora of lighting options.
LEDs, semiconductor diodes that light up when current runs through them, are 10 to 20 times as expensive as incandescents, too high for use at home.
Transphorm plans to sell transistors separately, but it also plans to sell a more complete power conversion module that will contain both diodes and transistors.
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Although the fibre in question could not conduct electricity, the same technique should work with conductive molecules, which could serve as minute diodes and other circuit components.
As a result devices that use them need fewer LEDs (light-emitting diodes) to provide backlighting, allowing the screen to take up less room and use less power.
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Light emitting diodes (LEDs) have some of the same advantages.
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