Are direct LED Walls really that good?

Are direct LED Walls really that good? Author Topic: Are direct LED Walls really that good?  (Read 625 times)

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Offline Peter CINERAMAX

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Are direct LED Walls really that good?
Re: Are direct LED Walls really that good? Seams a challenging aspect in Samsung
« Reply #13 on: Fri November 17, 2017, 04:11:33 PM »
I went up to samsung to inspect the 1.5mm pitch system we will be implementing in The San Diego Omni PH.

https://twitter.com/CINERAMAX

Like wolfgang I was surprised to see visible seams, and another artifact which i will cover later.

The visible seams ocurr because of level discrepencies in the Z axis. There is a spring tension screw adjustment that eliminates this, it works because in some parts of the image it was perfectly matched. The thing is that this is an office demo room and people go in and remove tiles and touch them etc.

It is theoretically possible that such seams if we had for example my engineer doing the adjustment and i sitting on the MLP that it could be near perfect.

John is very good like that.



In addition to the same problem that samsung has in common with cledis there is an additional adjustment specific to the surface mounted LED's. Bright lines!

In the pixel rows where the two tiles meet each other there is increased brightness. There is a special calibration process where the brightness of the individual pixel rows is toned down to match the tile.

It works because there were a few tile junctures where it was perfect, but again because of the evrybody touches and plays with it nature of the demo system quite a few bright edges could be found.

ALL IN ALL it will be a lot of work but something having seen some of it working we feel, and also use spcial color analyser with 16 bit video resolution on a per tile basis will also enhance.

So it becomes a perfect challenge for us to bring into our lab and give it a CINERAMAX reference picture quality, we welcome this huge challenge.

Offline Peter CINERAMAX

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Re: Are direct LED Walls really that good? Samsung LED optimalviewing conditions
« Reply #14 on: Sun November 19, 2017, 08:42:59 AM »
The best distance not to realise the pixels or the z-axis misleveled tiles is 12.5 feet. Fantastic image there.

Also do note that this set could be looking at a sunset without it being reflected or affected by the amount of light, so perfect for oceanfront movie watching is you do have the 12.5 feet /3.8 Metres.
« Last Edit: Sun November 19, 2017, 08:46:48 AM by Peter CINERAMAX »

Offline w.mayer

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Re: Are direct LED Walls really that good?
« Reply #15 on: Sun January 14, 2018, 06:37:16 AM »
Form the CES Sony Event.

Take a look especially the 2th picture in full resolution!
« Last Edit: Sun January 14, 2018, 06:38:15 AM by w.mayer »

Offline donaldk

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Are direct LED Walls really that good?
Re: Are direct LED Walls really that good?
« Reply #16 on: Sun January 14, 2018, 07:01:56 AM »
I can't do full resolution/size viewing but even on my old laptop LCD it shows the tiles and the module edges.

Offline Peter CINERAMAX

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Re: Are direct LED Walls really that good?
« Reply #17 on: Sun January 14, 2018, 09:32:03 AM »
Due to shinny nature The cled tiles are definitely more visible than the Samsung wall.

In the Samsung and Silicon core the black lines are misalignments in the  z axis.

When I first  went up to see the Samsung 1.5 at corporate. (This panel displays a 10 bit signal at 8 bit. The new one subjectively looks 12 bit by comparison.) The image was riddled by black lines and white lines. However the same 2.4 type panel was spectacularly well aligned The most structure free led tile display I have ever seen was the Samsung signage 2.4 on a huge display  outside of the Samsung cues 2018 booth.

So the existing Samsung 8 bit panels trully can be seamless. The installers came from the factory on Christmas’s day and started assembling the huge wall.

Very comforting to see, as I was very worried.

As to the wall, we have ordered 2 percent of the global production, We are now collaborating at the highest factory level.
« Last Edit: Sun January 14, 2018, 09:34:59 AM by Peter CINERAMAX »

Offline donaldk

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Are direct LED Walls really that good?
Re: Are direct LED Walls really that good?
« Reply #18 on: Sun January 14, 2018, 11:17:10 AM »
Peter, 'The Wall' is completely different technology as the current crop of SMD LED wall Samsung is selling into signage and Cinema. The Micro LED modules are made up of small tiles of tiny leds embedded in the surface material. These tiles are pre-assembled into the modules, so the front to back alignment does not rely on your team's workmanship, but on the quality control in the factory. And since we have been able to see the structure in the Sony on multiple occassions, it is something to be concerned about/make sure it is not bothersome in these MicroLED displays.