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custom screen 31" - 3600x1600 - cost 250$

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post #121 of 476 (permalink) Old 07-09-2013, 02:57 PM
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The problem i have with the retina display screen is overall the panel bezel is kinda big compared to a lot i have seen. Mainly it is the camera's fault.
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post #122 of 476 (permalink) Old 07-09-2013, 02:58 PM
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Here is a good ebay posting i found that has some good screenshots for those who are interested. (not so much a good price though this is only for screenshots)

http://www.ebay.com/itm/Apple-MacBook-Pro-15-A1398-mc975-MC976-RETINA-Model-LCD-LED-Screen-Panel-/160883445190?hash=item2575668dc6

Here is anotehr good price from a pretty good seller on ebay i found

http://www.ebay.com/itm/LSN154YL01-006-New-Apple-Pro-Retina-A1398-15-4-WQXGA-LED-LCD-Screen-GLOSSY-/190859984830?pt=US_Laptop_Screens_LCD_Panels&hash=item2c70243fbe
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post #123 of 476 (permalink) Old 07-09-2013, 03:30 PM
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I was thinking you could remove the actual LCD from that, that looks like it has the webcam and glass already attached to it. It may not be doable, but that was my line of thought. If not that's kind of annoying, but I don't think it's a deal killer.

How could I tell if a controller will work with both screens?

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post #124 of 476 (permalink) Old 07-09-2013, 03:33 PM
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Quote:
Originally Posted by Halo_003 View Post

I was thinking you could remove the actual LCD from that, that looks like it has the webcam and glass already attached to it. It may not be doable, but that was my line of thought. If not that's kind of annoying, but I don't think it's a deal killer.

How could I tell if a controller will work with both screens?

There is no controller that will be able to run both screens sense they are individual panels. Even if you made one you likely could not get it to work since many video card have a max resolution that they can display. Also you would likely decrease the quality because you are passing too much of a pixel clock on one cable and controller bus. Running them separately would be advisable thus needing a controller per screen.
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post #125 of 476 (permalink) Old 07-09-2013, 03:35 PM
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Sorry, I don't mean one that would run both at once. I would like a controller where I could run it with the iPad screen to actually test, and then later on use that same controller for the MBP screen, without the iPad screen attached to that controller. thumb.gif

Ideally with HDMI or DP compatibility. thumb.gif

Just thought of this, but iPad Retina screen would be excellent for old games with a 4:3 ratio.

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post #126 of 476 (permalink) Old 07-09-2013, 09:07 PM
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I would not put 4K screen price anymore in the 4000$ ballpark but more like closer to ~700$ TBH. As that is what you can get the cheapest ones currently. Ofc these have some issues (HDMI only and as such limited 30 HZ, which can be overclocked on some screens up to ~40 Hz)

As far as one controller goes to control both ipad and mackbook pro retina screens - while theoretically possible I'm not aware of any of them. The display itself is supposed to need just displayport signal routed to the right pins, however, the problem is back-light control. These screens are supposed to use different number of LED strips for that. When googling around few days back I did not spot any converter boards for the signal for that mackbook pro screen. There were some projects / blogs where it was visible that people are working on these.

IPAD retina screen has relatively large (for its size) bezels at the top and bottom. By the spec sheet something in the order of ~10 mm. The side bezels (when you have the screen in landscape) seem to be somewhat thinner at ~ 6 mm. When I get mine in ~3 weeks I'll do some measurements for sure unless someone who has one already gets it done before that.

I think that the fact that one can use these screens at PC would deserve its own special thread once people get their hardware and start tinkering with it more thoroughly. Or this thread even (although the original title would be a bit misleading in that regard).
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post #127 of 476 (permalink) Old 07-09-2013, 09:24 PM
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This is freakin incredible dude! Great job thumb.gif

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post #128 of 476 (permalink) Old 07-10-2013, 03:33 AM
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That's incredibly cool. I've always wanted to try that idea with high DPI laptop panels, but considering my skills it would wind up a flimsy duct taped monstrosity.

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post #129 of 476 (permalink) Old 07-10-2013, 04:22 AM
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About that IPAD3 / 4 screen and its overclocking ability. The spec sheet I found in the net can be seen at - http://www.panelook.com/LTL097QL01-W01_SAMSUNG_9.7_LCM_overview_17823.html

Now on that page it lists Frequency: 60 Hz with a little green question mark next to it - you can hover your mouse over it and there is some additional stats (and disclaimer about Panelook copyright so I will not post a screenshot of that in here in case its against the forum rules - so go hover the mouse over it to see it) which read as:
120 Hz (60HZ Input): Embedded MEMC Circuit
120Hz + 120 Hz : 120 Hz Panel + 120 Hz Backlight
240 Hz (60HZ InputI): Embedded MEMC Circuit

So the question is what do you make out of it. Is HZ something else than Hertz (usually Hz) or is it just typo? Then there is reference to the Embedded MEMC Circuit which - as I'm not familiar with these things at all reads that tthe panel itself can run happily at 120 or 240 Hz, but that this circuit is willing to take only up to 60 Hz input. What is interesting, however, is the listing about 120 Hz + 120 Hz backlight - now does this mean that I can somehow bypass this MEMC circuit - also, as far as I'm aware the backlight is driven by DC sp I'm not sure which they mean by 120 Hz backlight. Would it perhaps mean that with particularly crafty back-light control I can strobe it at 120 Hz?

BTW I'm not breaking copyright as I typed it all in myself with my very own two fingers (I do have more of them I'm just not that good at typing, ok?)

Anyway - so anyone knows what exactly MEMC is? The Abusemark controller is supposedly programmable if you are into that kind of stuff so ... in theory someone should be able to write a pretty crafty custom firmware for it as the current version is supposed to be half assed (no back-light control from software, just panel starts at 50% intensity and you can toggle between 100% intensity, 50% and off)

Edit:
Quote:
There are currently 2 different ways of achieving 240Hz. One way is to simply expand on the MEMC principle and add even more “estimated” frames between the original frames.
- so as far as I understand at first glance it the MEMC is some-kind circuit that takes your input at some lower frequency and then does interpolated frames in between. Am I correct if anyone knows? If true then that would mean that hopefully there would be a possibility of somehow bypassing the embedded circuitry although I would not hold my hopes particularly high in that regard.

Edit2: On the other hand - bypassing the MEMC circuit might be as simple as just hitting the panel with a 120 Hz signal looking at the listed specs as its clear that the panel itself is supposed run physically either at 120 Hz (first two modes) or at 240 Hz (the third mode). When I get mine then will just have to figure out a good way to test at what frequency is it running - how exactly ... well that's a trickier question. I do not have that high speed camera to just flat out film it and see. But I do have a DSLR which can do reasonably short exposure times so hopefully something can be figured out by moving stuff on the screen around and then taking short exposure shots of it and counting the ghosting image trails. Problem is - I have no idea how to differentiate between interpolation and a "true 120 Hz".

Edit3: Interesting screen I noticed - LTL097QL01 - thats 2560x1700 12.85'' screen. Approx ~80$ / unit at first glance and this is supposedly IPS. Link to spec sheet: https://www.revo-sys.com/prodimages/LCD-Display-Panel/LG-12.9-LP129QE1-SPA1-LVDS-2560-1600-400-NITS.pdf - also eDP but with 40 pin connector instead of the 51 pin one like the IPAD 3/4. That looks even better than the IPAD one if only there is convenient enough way to drive one and the price premium is not that huge.
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post #130 of 476 (permalink) Old 07-10-2013, 10:40 AM
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Duniek hopefully we aren't going too far off topic here, if so let me/us know lol.
Quote:
Originally Posted by Carniflex View Post

About that IPAD3 / 4 screen and its overclocking ability. The spec sheet I found in the net can be seen at - http://www.panelook.com/LTL097QL01-W01_SAMSUNG_9.7_LCM_overview_17823.html

Now on that page it lists Frequency: 60 Hz with a little green question mark next to it - you can hover your mouse over it and there is some additional stats (and disclaimer about Panelook copyright so I will not post a screenshot of that in here in case its against the forum rules - so go hover the mouse over it to see it) which read as:
120 Hz (60HZ Input): Embedded MEMC Circuit
120Hz + 120 Hz : 120 Hz Panel + 120 Hz Backlight
240 Hz (60HZ InputI): Embedded MEMC Circuit

So the question is what do you make out of it. Is HZ something else than Hertz (usually Hz) or is it just typo? Then there is reference to the Embedded MEMC Circuit which - as I'm not familiar with these things at all reads that tthe panel itself can run happily at 120 or 240 Hz, but that this circuit is willing to take only up to 60 Hz input. What is interesting, however, is the listing about 120 Hz + 120 Hz backlight - now does this mean that I can somehow bypass this MEMC circuit - also, as far as I'm aware the backlight is driven by DC sp I'm not sure which they mean by 120 Hz backlight. Would it perhaps mean that with particularly crafty back-light control I can strobe it at 120 Hz?

BTW I'm not breaking copyright as I typed it all in myself with my very own two fingers (I do have more of them I'm just not that good at typing, ok?)

Now that is extremely interesting. If it really can do 120Hz that would be sick as an accessory/old game display. It looks like maybe it can interpolate, so not sure on that. Some 17.3" 1080p screens also say that, very cool.
Quote:
Originally Posted by Carniflex View Post

Anyway - so anyone knows what exactly MEMC is? The Abusemark controller is supposedly programmable if you are into that kind of stuff so ... in theory someone should be able to write a pretty crafty custom firmware for it as the current version is supposed to be half assed (no back-light control from software, just panel starts at 50% intensity and you can toggle between 100% intensity, 50% and off)

Edit:
- so as far as I understand at first glance it the MEMC is some-kind circuit that takes your input at some lower frequency and then does interpolated frames in between. Am I correct if anyone knows? If true then that would mean that hopefully there would be a possibility of somehow bypassing the embedded circuitry although I would not hold my hopes particularly high in that regard.

Edit2: On the other hand - bypassing the MEMC circuit might be as simple as just hitting the panel with a 120 Hz signal looking at the listed specs as its clear that the panel itself is supposed run physically either at 120 Hz (first two modes) or at 240 Hz (the third mode). When I get mine then will just have to figure out a good way to test at what frequency is it running - how exactly ... well that's a trickier question. I do not have that high speed camera to just flat out film it and see. But I do have a DSLR which can do reasonably short exposure times so hopefully something can be figured out by moving stuff on the screen around and then taking short exposure shots of it and counting the ghosting image trails. Problem is - I have no idea how to differentiate between interpolation and a "true 120 Hz".

Edit3: Interesting screen I noticed - LTL097QL01 - thats 2560x1700 12.85'' screen. Approx ~80$ / unit at first glance and this is supposedly IPS. Link to spec sheet: https://www.revo-sys.com/prodimages/LCD-Display-Panel/LG-12.9-LP129QE1-SPA1-LVDS-2560-1600-400-NITS.pdf - also eDP but with 40 pin connector instead of the 51 pin one like the IPAD 3/4. That looks even better than the IPAD one if only there is convenient enough way to drive one and the price premium is not that huge.


Not sure on how to do that bypass or anything, but you may be right about just hitting it with 120Hz signals. Hmm. Not sure how to test it though.

Also extremely interesting, any idea on a controller for that screen? Never seen 1700p like that before, pretty cool really. At $80 that ain't too bad at all, probably more worth it than the MBP screens. The MBP screens are PLS panels though, not sure there's a difference in those and IPS.

2880x1800 - 5,184,000 pixels - $250 - 20,736 pixels per $
2560x1700 - 4,352,000 pixels - $80 - 54,400 pixels per $

Not bad really. Got a link to that screen?

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