Product category:
Light Emitting Diodes (LEDs)
News Release from: Philips Lumileds Lighting | Subject: Luxeon LEDs
Edited by the Electronicstalk Editorial
Team on 31 August 2004
High-power LEDs provide brighter TV
backlights
High-power Luxeon LEDs are being used in the world's first LED backlight for LCD home televisions.
High-power Luxeon LEDs are being used in the world's first LED backlight for LCD home televisions The Luxeon lit system delivers the most vivid colours ever seen on a television - expanding the gamut of reproducible hues by as much as 45% - offering realism never before possible with conventional technologies
This article was originally published on Electronicstalk on 21 Jul 2006 at 8.00am (UK)
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Bright showing from long-life LEDs
The Luxeon III is a new high-power 100kh-life LED that generates typical light output of 65 and 80 lumen from a single emitter at 700 and 1000mA operation, respectively.
The Luxeon light source is integrated in Sony's 40 and 46in Qualia series televisions.
This light source was jointly developed and optimised for Sony's television application.
"Sony's Qualia 005 and the Triluminos backlight are the latest examples of never before possible applications enabled by Luxeon", said Menko de Roos, Executive Vice President of New Business Development at Lumileds.
Further reading
RGB LED backlight is ready to use
The Luxeon DCC is billed as the first fully assembled LED-based RGB light source for use as an alternative to cold cathode fluorescent lamps in LCD backlights.
High-power LEDs claim new standards
Lumileds Lighting is expanding its Luxeon high-power LED family with new emitters claimed to set industry-wide performance standards.
"Consumer expectations will forever be changed by Sony's implementation of Luxeon LEDs and the on-screen performance that viewers are treated to".
"We are pleased to have worked with Sony on this groundbreaking technology".
The unique colour attributes of Luxeon LEDs enable significantly improved performance and expand the achievable colour gamut.
The display system in the Qualia 005 televisions delivers a colour gamut that is 105% of the NTSC colour space.
By comparison, conventional technologies can only reproduce 65-75% of the NTSC colour space.
There are significantly more hues and tones available in a wider colour gamut allowing for finer and more exact colour definition.
For the viewer, this means that on-screen colour is virtually lifelike.
Everything from skin tones to foliage to the sky appear true to our visual senses.
No conventionally lit displays or televisions can offer similar performance.
Additionally, Luxeon significantly improves both sRGB and Adobe RGB colour performance.
Qualia 005 is measured at 150% of sRGB.
Luxeon can also be used to match Adobe RGB colour space ensuring that on-screen representation matches printed output.
The use of Luxeon also allows for full control of the backlight system so that the white-point, colour and brightness can be optimised for every application.
The settings for movies, electronic games, photo images and home video can be controlled and customised for optimum viewing effect.
Lumileds' provided the Luxeon reference design, prototypes and its knowledge-base in solid-state light sources for backlight applications.
Sony provided its experience in quality television designs and systems engineering to ensure that the final product offered the ultimate quality and experience for users.
The Triluminos backlight, developed in months, takes full advantage of the high-power Luxeon LEDs and the nature of solid-state technology.
Luxeon LEDs are mercury free making them much safer for the environment.
Because the lifetime of the backlight system is significantly extended, less waste material will be produced.
Additionally, there is no UV radiation in the light from Luxeon nor is there any forward heat.
This allows for greater flexibility in system design and a wider variety of applications.
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