41–50 of 149 posts
This sounds awesome for future VR gear, when you need small displays with more pixels that is currently possible. 4K virtual monitors, here we come!
Nvidia is both a blessing and a curse in many ways for standardization... =3
This vaguely reminds me of "CCSTN" (Color Coded Super Twisted Nematic) LCD displays, which were used in a few Casio calculators to produce basic colour output without the usual RGB colour filter approach. https://www.youtube.com/watch?v=quB60FmzHKQ https://web.archive.org/web/20240302185148/https://www.zephr...
Hm, thinking about this further, this would need dithering to work properly (which probably works fine, but the perceived quality difference would mean pixel density comparisons aren't apples-to-apples) Presumably, you get to control hue and brightness per-pixel. But that only gives you access to a thin slice of the sRGB gamut (i.e. the parts of HSL where saturation is maxed out), but dithering can solve that. Coming…
Dithering is at worst equivalent to subpixels, which we already use. If you take the "no subpixels" claim out of the article, this technology still seems useful for higher DPI and easier manufacture.
Earlier quoted context omitted.
Yes, it’d be two subpixels instead of the current three. It’s not clear that that’s worth the added complexity of having to control each subpixel across two dimensions (brightness and wavelength) instead of just one (brightness).
Can you produce "white" with just two wavelengths?
[0] https://upload.wikimedia.org/wikipedia/commons/f/f1/1416_Col...
The fundamental problem is that color space is 2D[1] (color + brightness is 3D, hence 3 subpixel on traditional displays), but monochromatic light has only 1 dimension to vary for color.
This vaguely reminds me of "CCSTN" (Color Coded Super Twisted Nematic) LCD displays, which were used in a few Casio calculators to produce basic colour output without the usual RGB colour filter approach. https://www.youtube.com/watch?v=quB60FmzHKQ https://web.archive.org/web/20240302185148/https://www.zephr...
Hm, thinking about this further, this would need dithering to work properly (which probably works fine, but the perceived quality difference would mean pixel density comparisons aren't apples-to-apples) Presumably, you get to control hue and brightness per-pixel. But that only gives you access to a thin slice of the sRGB gamut (i.e. the parts of HSL where saturation is maxed out), but dithering can solve that. Coming…
You really can't think about single wavelength tunable pixels as something except at the edge HSL. I think about it from the CIE "triangle" where wavelength traces the outer edge, or even the Lab (Luminance a-green/red b-yellow/blue) color space since it's more uniform in perceivable SDR color difference (dE). https://luminusdevices.zendesk.com/hc/article_attachments/44... One key realization is that although 1 sub-p…
Hm, thinking about this further, this would need dithering to work properly (which probably works fine, but the perceived quality difference would mean pixel density comparisons aren't apples-to-apples) Presumably, you get to control hue and brightness per-pixel. But that only gives you access to a thin slice of the sRGB gamut (i.e. the parts of HSL where saturation is maxed out), but dithering can solve that. Coming…
Even if these could produce just three wavelengths, if you can pulse them fast enough and accurately, the effect would be that color reproduction is accurate (on average over a short time period)
Some states are not accessible at a given time (voltage can tune which states are available) but my understanding is the number of states is fixed without rearranging the atoms in the material.
