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Digital Projection Radiance LED MicroLED Display at CEDIA 2017

3.8K views 14 replies 8 participants last post by  donaldk  
#1 · (Edited by Moderator)
Digital Projection is well known for high-end DLP projectors, and it has several new models at this year's CEDIA. But perhaps more significant is the Digital Projection Radiance LED, a tiled microLED display reminiscent of the Sony CLEDIS and Samsung Cinema Screen.

As many readers probably know, each pixel of a microLED display is a trio of tiny red, green, and blue LEDs, sort of like the Jumbotron found at many sports stadiums. But the LEDs in a Jumbotron are much larger than the microLEDs used in such displays suitable for watching movies in a commercial cinema or home theater.

The Digital Projection Radiance LED consists of modular tiles measuring 24"x13.5" (16:9). The tiles can be combined to form a screen of virtually any size. Currently, tiles are available with a pixel pitch (the distance between pixels) of 2.5, 1.9, and 1.5 millimeters, and they have a peak brightness of 1000 nits. Tiles with a pixel pitch of 1.2 mm are not far behind, and they'll have a peak brightness of 900 nits.

A Radiance LED system includes a processor that controls all the tiles and allows calibration of the entire display. Each tile consists of four replaceable panels, and Digital Projection can even replace individual LEDs. If a panel or tile needs to be replaced, the entire display must be recalibrated to maintain consistency across the screen. All systems come with a few extra tiles for quick replacement if needed.

Image
Each tile consists of four microLED panels that can be easily replaced. In fact, all servicing is done from the front of the screen.

Signals are fed to the display via HDMI 2.0 to the processor. The system does not yet support high dynamic range, but that is definitely on the product-development roadmap.

There were two Radiance LED displays in the Digital Projection booth at CEDIA. A 16:9 screen measuring 137" diagonally consisted of tiles with 1.5 mm pixel pitch, and it was mostly showing several images of various sizes as seen in the photo above. The cost of that system is about $135,000. Also in the booth was an "infinity wall" measuring 18' wide and 3.5' high. In that case, the tiles had a pixel pitch of 1.9 mm.

Both looked excellent, with rich colors, sharp detail, bright highlights, and super-deep blacks, thanks to the fact that the brightness of the LEDs is controlled independently. I could see the pixels when I got right up to the screen, but at a normal viewing distance, they blended into a smooth, seamless image.


The Digital Projection Radiance LED Video Wall at CEDIA 2017.

I've heard it said that microLED displays could eventually replace projection systems with much higher peak brightness and much deeper blacks. I think that is entirely possible, but not for a long time. Still, I find it very interesting that a projector stalwart like Digital Projection is getting into the microLED game. Apparently, the company sees the writing on the wall and wants to hedge its bets sooner than later.
 

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#3 ·
Ah this ain't a micro LED (Sony CLEDIS) display. It is a big down standard Direct View LED Display (Samsung and everyone). 2.5, 1.9, and 1.5 mm pitched FPD is the commercial sweet spot for indoor video, not state of the art, as that goes down to 0.7 mm in commercially available product. One Polish manufacturer even claims to be able to deliver 0.6mm.

And Yes, 'Significant shareholder' Delta Electronics has been in the Direct View LED business for years. As well as the (now LASER-Phoshor) cubes business.

So how is the near black? How is the contrast control, the brightness control, colors stay on point as the brightness is dimmed? The image looks like a standard control room demo, not an So, an off-the-shelf public signage LED wall, or an actual HT product, DPI's focus is in commercial displays, not HT, so I would guess this is more an Infocomm demo. But pleased to har if DPI managed to turn it into a proper HDR/Low APL HT display.
 
#7 ·
Precisely Donald. This was not / is not a MicroLED display product. It's a bog-standard advertising-type LED video display panel... Nothing to see here folks... move along! ;) :)
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#4 ·
I can't wait to see this technology mature over the next few years.
 
#5 ·
The LED tiles looked pretty good but not ready yet for 4K home theater. I am sure this will change very shortly and you will see something by next Cedia. On another note I demo'd the Insight 4K Laser and was very very shocked at how good the blacks look at only 2000:1 on/off.
 
#8 · (Edited)
On another note I demo'd the Insight 4K Laser and was very very shocked at how good the blacks look at only 2000:1 on/off.
Me too Lon! It looked more like 20,000:1 on/off contrast, not 2,000:1! Glad it's not just me who thinks this! :)

In fact, I think what we were seeing in fact was circa 20,000:1 on/off contrast... Because they had the light output cranked down by 60%, which is what they told me... but the image was impressive nonetheless!
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#11 ·
Micro LED has to come down to 0.1 mm pixel pitch or so. Not for home cinema but for (digital) fine art. Imagine a 1.2m times 1.6m panel with 12000 times 16000 pixels. You can load digitised versions of all the classic paintings and all the new computer art from an integrated SSD disk and show them as "backlit" versions, SDR or HDR, programmable as "slide" shows or static. It would allow to establish a completely new market for art sales and display (and display of people's ordinary private family etc. pics too, of course).