http://www.hdtvsolutions.com/CES_2009_Report.htm
What is more appealing to me is placing the LEDs behind the panel in an array of lights. Then LEDs in darker areas of the picture can be dimmed, which increases contrast. This year, panel manufacturers like LG Display are introducing new LCD screens with more LED backlight arrays, which will allow more accurate local dimming and even better picture quality.
Of course with the LEDs behind the panel instead of along the edge, the TV can't be as skinny. Though LG's LED backlit LHX 55" LCD TV is less than one-inch thick at its thinnest. But if I have to choose, I'll take picture quality over a razor thin profile any day.
While we are on the topic, the rush to crush HDTVs thinner than crepes continues. Everyone seems to be showing off their Twiggy-like TVs, some measured in millimeters at the narrowest part of the frame. Models such as
Sharp's Limited Edition XS1U-S and Sony's KLV-40ZX1M loosen their belt buckles a bit at the base of the screen to accommodate power cords and audio video connections.
I admire the technological prowess it takes to roll out a display this slender. But after the initial neck bending gawk to marvel at the wispy contour, I turn my attention to the quality of the image on the screen. Happily both the Sharp and Sony deliver the eye popping performance that you would expect from these flagship TVs.
LED-based edge lighting for illumination of flat-panel displays
Video Imaging DesignLine
(03/08/2007 0:17 PM EST)
http://www.videsignline.com/showArt...N2JVN?articleID=197801247&queryText=+edge+lit
Brecksville, OH, -- According to Global Lighting Technologies (GLT), modular edge lighting utilizing patented MicroLens light extraction technology from GLT
provides the most efficient
LED-based edge lighting technology available for today's flat panel displays.
The MicroLens concept brings molded-in optics, higher brightness (more output/watt), thinner construction and a scalable design to illumination of LCDs from <1" to >50" diagonal, using high-brightness LEDs (
HBLEDs) as the light source. GLT's MicroLens molded light guides enable outstanding edge-lit backlighting performance, and they can reduce the high cost, thickness, and power consumption associated with traditional direct backlighting methods that use an LED array under the display.
MicroLens edge lights, according to GLT, provide exceptional output and uniformity and can be used with a wide range of LED light sources, including RGB and white phosphor LEDs.
MicroLens' proprietary "transition area" and "lens arrays" help to spread the light uniformly, reducing the number of LEDs required, while its micro-optical elements precisely extract light for optimal performance.
"Compared to other edge-lighting technologies, MicroLens enables more dramatic improvements in color mixing and visual appearance," said David DeAgazio, GLT's Director of Sales Worldwide. "With up to 180,000 unique optical features per square inch (or 2,800 per cm2), MicroLens provides superior control over output and uniformity. In addition, it provides scalability to large sizes in an ultra-thin form factor, and offers the obvious cost advantages of a smaller form factor with fewer components."
MicroLens light guides can be designed for applications requiring extreme thinness, and are currently being developed in sizes under 0.5 mm thick. GLT provides fully integrated edge-lighting modules with LEDs, films, flex circuit or PCB with connector, and MicroLensTM light guide. With mechanical holding features that can be designed into the backlight, or onto a custom-designed backlight frame, MicroLens edge-lighting modules are designed for easy integration into the host application.
Applications include LCD and keypad backlights for mobile phones, MP3 players, camcorders, digital cameras, PDAs, GPS devices, handheld games, portable DVD players, scanners, automotive interior displays, programmable touch screen thermostats, home security system controllers, fish finders, instrumentation and control displays, handheld, notebook and desktop computers,
and LCD TVs.
GLT's three Far East production facilities make it possible for the company to offer these edge lighting modules in production quantities with quick delivery; and the extensive design and engineering capabilities at its Brecksville, Ohio, USA headquarters provide full custom design, prototyping, test & measurement, and optical modeling/simulation.
Pricing for GLT's MicroLens edge-lighting modules depends upon application, size, and volume, with single-LED edge lights available for well under $1.00 each. For details, contact Global Lighting Technologies with your application.
For more information, contact Global Lighting Technologies, Inc., on the web at:
www.glthome.com.
The clearest and brightest screen that Sharp has ever produced, the XS1 incorporates a
new RGB-LED backlight system, offering extremely fine
brightness and colour control when compared to conventional fluorescent backlights.
http://www.newswire.ca/en/releases/archive/November2008/11/c6150.html
Sharp Corporation will introduce into the Japanese market two new models in the AQUOS X Series of LCD TVs. The 65V- and 52V-inch*2 TVs feature Sharp’s newly developed, next-generation MegaASV LCD, a cumulation of Sharp’s one-of-a-kind LCD technologies.
By incorporating Sharp’s original one-of-a-kind LCD technologies into its
cutting-edge ASV LCD, Sharp has brought about the next-generation MegaASV LCD, which offers overwhelmingly superb picture quality, an innovative thin-profile design, and outstanding environmental performance. The new LCD boasts “mega-contrast ”—that is, a TV contrast of more than 1,000,000:1*3—to deliver deep, rich blacks never before possible. Plus, it expands the reproducible color gamut to 150%*4 of the NTSC color space to deliver the ultimate in color reproduction—almost any color can be reproduced.
http://www.eedigest.com/ecn/Sharp-to-Introduce-Two-New-X-Series-AQUOS-LCD-TVs/
ma cosa devo risponderti??? io non ero al CES!!!! ho riportato solo una notizia di una rivista specializzata e sono 3 le volte che lo ripeto...adesso la notizia sarà vera o inventata a me non me ne frega nulla!!! di quale sistema led usino a me basta che dalle recensioni ne esca bene
