A blasphemy....I know....

The question is not whether three RGB lights with variable intensity and backlight can produce yellow. They obviously can. The question is whether or not adding a fourth light in the way Sharp does produces a better picture. The newest large-screen RBG LCD TVs look better than the first RPTVs which came out but it is still the same RBG. The goal is a better perceived picture, not satisfying purists' theoretic ideals.

Anyone who has ever painted knows that you can use the three basic colors and white to get to everything, but I have known any number of painters over the years and none of them starts a painting with only four tubes of paint in the box.

Typical logic had me believing that the additional yellow would produce an Enhanced RGB. Printing CMYK, whether on press or some digital output device is commonly augmented with special colors to enhance areas where the standard 4-colors go flat.

Generally, I see reflective color (printing/painting) as very lossy in color purity. Additive color (light) can exist in a much more loss-less environment. I have a lamp that use 4 halogen "guns", three are dichroic filtered to produce pure RGB and the fourth unfiltered White light. Each of the RGB and White can be individually intensity controlled. To cut to the chase, if I added a Yellow lamp to the RGB mix, the colors produced would be altered or pushed in a direction. I am assuming I could readjust the RGB mix to repeat the original color prior to the addition of yellow. So theoretically, I am not necessarily improving the color, just changing the hue.

In the case of RGBY in a matrix, I think the fields of color can be positively enhanced at the glass. The processing would be more complex to properly incorporate the yellow push, but the addition of a specialized color could theoretically improve the richness of hues.

I look forward to seeing RGBY.

So whats this do to HDMI? And will it carry full 1080P?

05-05-10: Chadnliz
So whats this do to HDMI? And will it carry full 1080P?

It probably wouldn't change the requirements for HDMI transmission. It receives a standard digital RGB via HDMI and remaps the incoming 3-color signal into a 4-color array to assign colors to the pixels in the display.

Just as Dolby ProLogic could matrix out 5.1 surround from 2-channel, the RGBY TV probably extrapolates the yellow signal from within the RGB transmission received. Another illustration of the principle is the various tricks applied to 16/44.1 KHz digital to increase playback resolution via upconverting and bitmapping.

Everyone will think I'm crazy if they see the RGBY under the conditions I saw it at Best Buys. Usually they do a decent job, (OK at the Louisville, KY store).
But I took a friend in, and the sets were set up poorly, with color adjustments varying wildly.
At HH Gregg, the sets were all perfectly adjusted, moreover they were set 'the same' as one another, making heads up comparison easy.

FWIW.
Larry