Xiaomi just released their transparent OLED TV. It looks surreal:
https://www.theverge.com/2020/8/11/21363861/xiaomi-oled-tv-t...
Transparent OLEDs
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Re: Transparent OLEDs
#22how do they do the black?
My first thought was "well of course they don't," but their concept renders do indeed have opaque black. I'm guessing these are just technically uninformed renders with no basis in actually-proposed applications, but it seems at least plausible that one could combine transparent OLED with a transparent LCD backing (sort of the inversion of a backlight) to create a variable-transparency screen.
Pardon my ignorance but wouldn't LCD need polarized light to perform the darkening? Maybe a transparent pixelated electrochromic display layer might work
Re: Transparent OLEDs
#23For a long long time, science fiction movies have used transparent displays to seem more "futuristic." However, actual transparent displays have been underwhelming in practice. This technology is being use by Xaomi to make a "transparent TV"[1] which in theory you will be able to buy. (I realize that not all of these sorts of announcements survive until actual product shipment). It will be interesting to see one of t…
Yep, contrast and color accuracy are terrible problems to solve. It would be easier to fake it with a camera on the back of the phone... like Merged Reality.
Re: Transparent OLEDs
#24how do they do the black?
A basic transparent OLED screen doesn't, but is often slightly tinted, and (indoors) its pixels are bright enough that the transparent pixels are dark enough to appear black by comparison. The same way you can run a projector on a white wall during the day, and its "black" is just the normal wall color.
But while I've never seen it, I don't see why you couldn't put a transparent OLED over an LCD screen like the one in your laptop. Combined, I think they'd give you every combination of color and opacity you could want.
I don't know if there's any technology that combines the two capabilities into a single layer.
Re: Transparent OLEDs
#25Would this have anything to do with XioMi's announcement for their own transparent TV?
https://blog.mi.com/en/2020/08/11/turning-moment-for-tv-indu...
Re: Transparent OLEDs
#26I'm excited for transparent OLED's simply so that laptops and monitors will be able to put the webcam behind the display, ~1/3 from the top. Then videoconferencing software can automatically move the image of the person you're talking to so their eyes are roughly centered on that point. And finally everyone gets to make direct eye contact again!
I’m curious why software can’t correct this now? Messenger can make me look like a sheep, can’t it move my gaze?
Re: Transparent OLEDs
#27If you put your webcam behind your video chat window, you can achieve better eye contact with your remote participants. I wonder how well a webcam can see through these screens and/or how much of a hole would be required in the rendered image to avoid obstructing the camera.
With the right level of integration the camera could subtract the image that is in front of it. That would requires having a pretty good model of the point spread function, perfect synchronization etc. OLEDs have a fast response... I wonder if it would be possible to put the camera shutter and the oled out of phase enough to substantially dim it. Perhaps polarization could be used to get better isolation. With all th…
> I wonder if it would be possible to put the camera shutter and the oled out of phase enough to substantially dim it.
That's a neat idea. It reminds me of the early fighter planes that fired bullets between the propeller blades by having the gun driven off the engine, timed so that the bullet passes through the plane of the propeller while the blades are not in the way.
Re: Transparent OLEDs
#28I'm excited for transparent OLED's simply so that laptops and monitors will be able to put the webcam behind the display, ~1/3 from the top. Then videoconferencing software can automatically move the image of the person you're talking to so their eyes are roughly centered on that point. And finally everyone gets to make direct eye contact again!
I’m curious why software can’t correct this now? Messenger can make me look like a sheep, can’t it move my gaze?
Available in FaceTime:
https://appleinsider.com/articles/20/06/22/facetime-eye-cont...
Re: Transparent OLEDs
#29I'm excited for transparent OLED's simply so that laptops and monitors will be able to put the webcam behind the display, ~1/3 from the top. Then videoconferencing software can automatically move the image of the person you're talking to so their eyes are roughly centered on that point. And finally everyone gets to make direct eye contact again!
> put the webcam behind the display
The first time I saw an optical finger print sensor under a glass display, that was my immediate hope that it would kick off an under-glass optics explosion.
> everyone gets to make direct eye contact again!
As someone who doesn't always have "good" days with eye-contact, being forced to do that feels a bit terrifying.
Re: Transparent OLEDs
#30I'm excited for transparent OLED's simply so that laptops and monitors will be able to put the webcam behind the display, ~1/3 from the top. Then videoconferencing software can automatically move the image of the person you're talking to so their eyes are roughly centered on that point. And finally everyone gets to make direct eye contact again!
If you don't want to wait for eye-contact and have two monitors, you can place the webcam between the monitors and center your conversation-partner's image/window on the camera. Works great.