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Geek Culture / What is the major limiting factor on LCD screen resolution?

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Dark Java Dude 64
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Posted: 29th Mar 2012 05:24 Edited at: 29th Mar 2012 05:25
I have noticed pixel size hasnt been getting much smaller since the retina display introduction. I was wondering, is it the hardware rendering the image on the screen or is it some physical limitation with the liquid crystals? I know the retina displays have pixels only 78 micrometers across, and i know that is absolutely enormous compared to what photo lithography can produce. Does the LCD technology not work at lower sizes? Perhaps another reason, maybe it just isnt practical to make the pixels smaller seeing as there would be no real noticeable increase in image quality?

Also just as a side question, does each pixel have its own 'partition' of liquid crystal or do all the pixels share the same liquid crystal?

Learn lessons from your own repeated pressing of the Y key.~~DBD79
JRH
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Posted: 29th Mar 2012 13:04
How much you pay for it
Dark Java Dude 64
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Posted: 29th Mar 2012 13:38
Rather, what limits the screen pixel size? Not so much the resolution i suppose but the size of the individual pixels as i asked in the first post i do believe?

Learn lessons from your own repeated pressing of the Y key.~~DBD79
The Zoq2
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Posted: 29th Mar 2012 14:06
I thought retina displays where LED displays and not LCD
maho76
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Posted: 29th Mar 2012 14:24 Edited at: 29th Mar 2012 14:39
Quote: "How much you pay for it "


this ... in combination with:

"LCD displays consist of a layer of liquid crystal, sandwiched between two polarizing plates. The polarizers are aligned perpendicular to each other, so that light incident on the first polarizer will be completely blocked by the second one. The liquid crystal is a conducting matrix with cyanobiphenyls (long rod-like molecules) that are polar and will align themselves with an electric current. The neat feature of these molecules is that they will shift incoming light out of phase when at rest. Light exiting the first polarizer passes through the liquid crystal matrix and is rotated out of phase by 90 degrees, then it passes through the second polarizer. Thus, unpowered LCD pixels appear bright. When an electric current is passed through the crystal matrix, the cyanobiphenyls align themselves parallel to the direction of light, and thus don't shift the light out of phase, the light is blocked by the second polarizer and the LCD appears black... "

technology always become more expensive the smaller components are used. you have to find a compromise of mass-market usability and prices to sell a product in with that amount. there are surely hightech-displays for some laboratory/experimental things out there that go smaller, but absolutley unpayable for consumers.

the actual standards work for us, so why should the producers change them, risking lesser business volume to push technology research? no profit-oriented producer will do this while markets work as intended without loosing customers, only labs/universities for experimentals. as a printmediadesigner i have used often enough calibrated monitors and i can tell you: even the best lcd/plasma whatever out there for mass-production you (we) can buy for a eloquent prize ... is absolute crap in pixel accuracy, color-managment and backlit-technology. absolute crap, even when you know how to calibrate it on a nonpro-level... but we learned to live with the most propperly working versions of it, simply because so few people have seen better alternatives. visit "lowlevel/3rd world"-countries and look at the flatscreen tvs/monitors there, your eyes will bleed, even in relation to crapiest mass-products sold here.

think of quality difference between US-NTSC and EU-PAL. poor americans, washed out colors and crappy motion blur when comparing ntsc to pal... but most americans even dont know how good even old vhs-tapes can look on pal-vision, they simply dont know the format, so they thought ntsc was a good one ... while i had to scream each time i get printdata from usa wich was done on uncalibrated equipment.^^

Dark Java Dude 64
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Posted: 30th Mar 2012 00:42
Ah very interesting! Never knew that.... And that makes sense why they don't make pixels smaller!

I do believe the retina is led backlit LCD.

Learn lessons from your own repeated pressing of the Y key.~~DBD79
CoffeeGrunt
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Posted: 30th Mar 2012 01:09
Even at larger sizes, things like 4K2K appear to be reserved for plasma and OLED panels.

As LCD operates by passing light through the substance, I can only assume that there's a limit on how small the eye of the needle you're threading it through can be.
Dark Java Dude 64
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Posted: 30th Mar 2012 02:17
Ah. True! So then i have come to the conclusion that it's simply not economical to make the pixels smaller.

Learn lessons from your own repeated pressing of the Y key.~~DBD79

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