MicroLED Displays Could Show Up In Products As Soon As 2020 (ieee.org) 50
An anonymous reader quotes a report IEEE Spectrum: One of the most striking things about the prototype microLED display that Silicon Valley startup Mojo Vision unveiled in June was its size. At half a millimeter across, it's barely bigger than a single pixel from the microLED TV prototype Samsung showed off in 2018. That both use versions of the same technology is remarkable, and it portends big potential for screens made of superefficient and bright micrometer-scale gallium nitride LEDs. Impressive prototypes have proliferated during the past year, and now that companies are turning to the hard work of scaling up their manufacturing processes, displays could appear in some products as soon as late next year. The driving force behind microLED displays remains a combination of brightness and efficiency that LCD and OLED technology can't come close to. One demo of a smartwatch-size display by Silicon Valley -- based Glo shines at 4,000 nits (candelas per square meter) while consuming less than 1 watt. An equivalent LCD display would burn out in seconds trying to meet half that brightness. Some companies "are making monolithic displays, where the gallium nitride pixels are made as a complete array on a chip and a separate silicon backplane controls those pixels," the report says. Others "are using 'pick and place' technology to transfer individual LEDs or multi-microLED pixels into place on a thin-film-transistor (TFT) backplane. The former is suited to microdisplays for applications like augmented reality and head-up displays. The latter is a better fit for larger displays."
A great display for next gen consoles (Score:1)
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I for one look forward to seeing Judge Judy at 8K
Re:A great display for next gen consoles (Score:5, Funny)
Such a display wouldn't be that useful on its own, you would need a 9000kW sound system to go with it so that when someone lobs a flashbang in Call of Duty it both blinds AND deafens you in a realistic manner.
It's easier and cheaper to just shine a laser pointer into your retinas, than it is to buy a 4000 nits screen.
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The point of high nits is to have variation in brightness for the backlight according to the image shown. The eye is capable of seeing the difference between much larger ranges of brightness but the backlight in most current consumer panels is too low and static in nits representation.
Thats why its called HDR, High dynamic range and it needs hardware, not some pathetic software solution.
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We've had PWM dimming for LEDs for a long time. This is about power efficiency. How else do you think you'll get dark greys and most of the color gamut out of these? Shining a light through a dimmed window is much less efficient than just shining less light.
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Yeah but now you need an extra wire to each pixel, and an extra pin on an IC at the other end of that wire.
That's 8847360 IC pins.
In the case of the dimmed window,(TFT) each subpixel has a capacitor that stores the state of the pixel. That's what you'd replace with PWM. But you're already multiplexing with the TFT, you can't use the same wires. They're already doing PWM on the multiplexer to set the correct charge on the capacitor, so it just doesn't work well.
That's why even with OLED you can make a cheap
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If you can only use R, G, and B and full brightness, you only get 8 colors. These are LEDs - they only have on and off. PWM dimming is already required to get the rest of the color spectrum. I don't know how else you expect it to work.
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It is not true that LEDs only have on and off. It is very far from true. Even the most basic "this is an LED" type of breadboard circuit will just have a voltage source and a resistor, and the value of the resistor sets the brightness. Not relevant, but since your very-short comment is technically incorrect it makes it really hard to understand what your point or question or whatever actually is.
Nothing about this technology changes that large displays have to have TFT, because wires. This tech does not cha
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OLED keyboards existed 10+ years ago. They were really expensive and never reached any adoption level.
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Brightness? What about contrast? (Score:1)
I don't need a TV that's as bright as the sun, I need (ok fine, want) a TV with superior contrast.
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That's exactly what OLED & Micro LED deliver, because in the "off" state they're purely black, unlike LCD pixels which still let some backlight through. Higher maximum brightness is great for outdoor and/or HDR uses.
OLED is pretty awesome but unfortunately there are still some issues that haven't been engineered out. In particular the rather limited (and varying) lifetime of the emitters and black smearing. Both of these shouldn't be a problem with micro LEDs.
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This is how you get contrast. Bigger gap between light and dark. And like OLED, black is black.
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It's an LED. The contrast is a given in that the technology has an actual "off" state.
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Sun at noon is 1600000000 nits.
The demo is 4000 nits.
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Sun at noon is 1600000000 nits.
The demo is 4000 nits.
And this, my son, is how you pick nits.
Good news for VR (Score:3, Informative)
This might rid VR headsets from the "screen door" mesh effect.
patents (Score:2)
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Tech demo. (Score:2)
I see this more as a tech demo. The real prize is when they can move everything over to a curved and flexible substrate as long with everything else needed to power and control it. Contact lens based VR/AR seems like the real goal.
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It doesn't need to be on a contact lens, it sounds good but it would irritate the eye and have potential life-altering consequences.
More likely just high resolution HUD glasses.
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That's a bit too "Black Mirror" for my tastes.
But yeah.
Car Rental Services in Dubai (Score:1)
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