3 ms·

Those seem like an excellent replacement to the “billboard tv” you see in various buildings now

carlosjobim 3y ago
For day-time advertising they seem to be superior to anything, including high-quality print. For night-time advertising, the advertisers will want the brightest possible display. A huge amount of insanely bright billboard screens have popped up in my neighbourhood recently, that are so bright as to become traffic dangers. Just waiting for them to be smashed by vandals, honestly. Edit: Here are the new E Ink Spectra 6 displays I was talking about, pardon my Chinese: https://www.youtube.com/watch?v=U7V2EFAcbtU https://www.youtube.com/watch?v=U7V2EFAcbtU
- cubefox 3y ago
  Apparently E Ink managed to move four different types of colored particles (white, cyan, magenta, yellow) through the fluid inside the pixels: https://www.ineltek.com/wp-content/uploads/2017/08/ACeP-How-It-Works.jpg https://www.ineltek.com/wp-content/uploads/2017/08/ACeP-How-... The cyan, magenta and yellow pigments are transparent like in inkjet printers. They are used to subtractively mix red, green, blue and black. The white particles are not transparent, so they block the rest when they are on top. So E Ink is able to create the eight primary colors: https://technewsspace.com/wp-content/uploads/2023/04/1681215995_840_E-Ink-introduced-Spectra-6-color-displays-with-electronic-ink.jpg https://technewsspace.com/wp-content/uploads/2023/04/1681215... I'm not sure whether they are able to create other colors inside a pixel, but these eight are enough to create full color displays with dithering. But the problem seems to be the time required for separating the pigments. 12 seconds is absurdly long for a full refresh. I think the electrophoresis screen technology is fundamentally a dead end here. Moving solid particles in a fluid introduces drag, which will always be slow. I thought the second generation "SMI" Mirasol screen technology by Qualcomm looked a lot more promising. It doesn't require subpixels and probably would have been fast like the first generation. Here is a video from 2014: https://youtube.com/watch?v=VMDaJB2y4vc https://youtube.com/watch?v=VMDaJB2y4vc However, Qualcomm stopped investing in developing the technology shortly after it was shown. It would have worked by moving solids (MEMS) through the air instead of through a fluid, which doesn't introduce the drag problem present in E Ink's electrophoresis displays.

For day-time advertising they seem to be superior to anything, including high-quality print. For night-time advertising, the advertisers will want the brightest possible display. A huge amount of insanely bright billboard screens have popped up in my neighbourhood recently, that are so bright as to become traffic dangers. Just waiting for them to be smashed by vandals, honestly. Edit: Here are the new E Ink Spectra 6 displays I was talking about, pardon my Chinese: https://www.youtube.com/watch?v=U7V2EFAcbtU https://www.youtube.com/watch?v=U7V2EFAcbtU

cubefox 3y ago
Apparently E Ink managed to move four different types of colored particles (white, cyan, magenta, yellow) through the fluid inside the pixels: https://www.ineltek.com/wp-content/uploads/2017/08/ACeP-How-It-Works.jpg https://www.ineltek.com/wp-content/uploads/2017/08/ACeP-How-... The cyan, magenta and yellow pigments are transparent like in inkjet printers. They are used to subtractively mix red, green, blue and black. The white particles are not transparent, so they block the rest when they are on top. So E Ink is able to create the eight primary colors: https://technewsspace.com/wp-content/uploads/2023/04/1681215995_840_E-Ink-introduced-Spectra-6-color-displays-with-electronic-ink.jpg https://technewsspace.com/wp-content/uploads/2023/04/1681215... I'm not sure whether they are able to create other colors inside a pixel, but these eight are enough to create full color displays with dithering. But the problem seems to be the time required for separating the pigments. 12 seconds is absurdly long for a full refresh. I think the electrophoresis screen technology is fundamentally a dead end here. Moving solid particles in a fluid introduces drag, which will always be slow. I thought the second generation "SMI" Mirasol screen technology by Qualcomm looked a lot more promising. It doesn't require subpixels and probably would have been fast like the first generation. Here is a video from 2014: https://youtube.com/watch?v=VMDaJB2y4vc https://youtube.com/watch?v=VMDaJB2y4vc However, Qualcomm stopped investing in developing the technology shortly after it was shown. It would have worked by moving solids (MEMS) through the air instead of through a fluid, which doesn't introduce the drag problem present in E Ink's electrophoresis displays.