QD-LED Display

[Fadingz]

QD-LED(Quantum Dot Light Emitting Diode) is the technology for the next gen display.



Pros:
-It is about 50 to 100 times brighter than CRT and LCD displays ~40k cd/m^2
-More saturated green.
-Can be manufactured on polymers! (ie. soft materials)
-Small, hence ultra-thin display with small pixel wells
-Cost a lot less than LCD and Plasma
-Energy efficient
-Same material for all wavelengths of light
-Much higher resolution
-No more backlight bleeding because there is NO BACKLIGHT!

Cons:
-Blue is less saturated
-Blue quantum dot is pretty difficult to manufacture due to the timing control during the reaction. Blue quantum dot is just slightly above the minimum size, where red to green can be easily obtained. Also, human eyes need 50x brighter blue than green in order to detect the same signal.
-Lasts for 1000hrs from 40k cd/m^2 to 600 cd/m^2 (from peak to LCD intensity) for Red
-and of course, not ripen yet.
-They either emmit light or heat, one or the other due to fermions (e- + e+ --> photon or heat). So, you play games or cook egg lol.
-Causes overexposure on cameras lol~ (if you try to take photos, that is xP)


It also can generate much more energy efficient white light to replace the current energy saving lightbulbs.


Found some info here:
http://wiki.mobileread.com/wiki/QD-LED
but I learned/heard most about if from my department.

And, I thought I was in the hardware section >.>

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[skoreanime]

I've heard of this. It's spiffy and like you said, it has its pros and cons. The big thing about this how much brighter it is and uses less energy and costs less to manufacture. Until they fix the cons on it, I don't see it replacing LCDs in the next 5 years IMO.

[Fadingz]

The time it takes is approximately 10 to 20 years for it fully function and be on the public market xD~
I saw one printed on the polymer, it was really sweet!!! you can just roll up the screen and go lol. REALLY thin too.

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[runawayprisoner]

Yeah... I think they demonstrated some earlier this year... maybe at CeBit... can't remember. There was a model demonstrating the screen. Resolution was really high, and it was thin as a piece of paper.

And I think it was going to use that next-generation graphics port... whatever its name was... (I think I need more coffee... again)

In 2020, you don't buy water-cooling for your PC. You buy water-cooling for your screen!

[PCXL-Fan]

displayport? They need to scrap that thing, and go with something with signifigantly more bandwidth to allow longer technological lifespan and futureproofing. It has only like 10% more bandwidth then standard hdmi/dvi

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Originally Posted by Exodus

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[SCHUMI_4EVER]

Originally Posted by Fadingz

I saw one printed on the polymer, it was really sweet!!! you can just roll up the screen and go lol. REALLY thin too.

Is that what they used in China? That screen was kicka$$.

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[makotech222]

Sweet i always love hearing about new types of displays. Im still waiting on OLEDS. Afterwards ill keep my hopes up high for this

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[Fadingz]

LED TV right now is a step closer to QD-LED :]
but LED TV relies on semiconductors of different band gaps, hence the price can still be lowered using QD-LED.

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[PCXL-Fan]

Between LED and Plasma, Plasma still looks the best imo. A higher end Samsung 850 series or Panasonic V or Z series plasma still looks better than the Samsung LED tvs.

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Originally Posted by Exodus

Yes, I like anime, Street Fighter, Japanese music and download video game music. Yes, I know... I've changed.

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[@ruantec]

Nice find

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Last edited by @ruantec; January 19th, 2010 at 08:44..

[Fadingz]

Originally Posted by PCXL-Fan

Between LED and Plasma, Plasma still looks the best imo. A higher end Samsung 850 series or Panasonic V or Z series plasma still looks better than the Samsung LED tvs.

Plasma only lasts for 2 years before refill.
and plasma is thicker than LED is.

Plasma has lower contrast ratio btw.

Industry is moving away from plasma.

__________________

[Smooth Criminal]

*hugs his old crt monitor and crt tv*

btw wats the life of an led tv??

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^^posted bysonic

[Fadingz]

LED is 7-8 years
Some TV/monitors have organic parts, they will fail earlier if placed in moist environment.

__________________

[PCXL-Fan]

Originally Posted by Fadingz

Plasma only lasts for 2 years before refill.
and plasma is thicker than LED is.

Plasma has lower contrast ratio btw.

Industry is moving away from plasma.

Still Image quality wise plasma's still have the edge.

nah plasma don't regularly need refills every 2 years. The industry is moving away, but that is because its more expensive to manufacturer/repair plasma vs ccfl-lcd/led-lcd, still potential to burn-in from misuse, somewhat higher energy consumption (+ ~15-20% then ccfl), more universally optimal lighting conditions of lcd, ability to hook them up to computers, misconceptions from consumers such as overblown fear of burn-in, not because plasma's are inferiority in image quality. This is why Plasma continues, and will continue to survive for at least a few more years. If you compare, plasma to ccfl-lcd/led-lcd at any price point, plasmas will still have the better image quality. Still the highest end plasmas have better IQ then the highest end LEDs. A $1000 plasma will still have better image quality then a $1000 lcd. And dynamic contrast ratios mean very little for total image quality. Its just a numbers game. Even a difference in static contrast ratio may not greatly impact the viewing quality, as they are already both high. Plasma's still give sharper clearer image quality during motion then LEDs. LEDs still use the pseudo 120-240hz frame insertion technology. Plasmas are better for scaling to other nonnative resolutions. Plasmas cover more of the color gamut. Those higher end plasmas have ~1inch widths that approach led screens. And for most people 2.5 inch vs 1 inch withs means very little anyways.

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Try @ES the ultimate emulator frontend and all in one media player

Originally Posted by Exodus

Yes, I like anime, Street Fighter, Japanese music and download video game music. Yes, I know... I've changed.

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Last edited by PCXL-Fan; January 20th, 2010 at 04:56..

[Smooth Criminal]

Originally Posted by Fadingz

LED is 7-8 years
Some TV/monitors have organic parts, they will fail earlier if placed in moist environment.

hmm....still the crt's are like sherman tanks....my monitor is 7 years oldand strong and my old tv(replaced about a year ago......sound problem..) was 9 years old

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^^posted bysonic

[DarkSamus]

Nice find by a bot!

I remember some time ago (Can't remember when exactly, remember I am 34) seeing a show on Television that showed a future display I am yet to see but sounds very much like the screen described that can be rolled up!

I remember thinking how cool it would be if they could get the number 1 issue the display had.
It only displayed in shades of copper (think like a black and white TV but all copper shading instead of grey)
It always made me curious as to how long it might take to crack the problem and indeed if it ever did get solved at all, but assumed it never came out because they where unable to get it right!

Could this have been the same tech?

I must say as someone that has upgraded his monitor to the LED version of the exact same screen (BenQ v2400W to BenQ v2400eco) that I could not be happier.

I have seen to many plasmas go bad (Burn in) on people I know and when I need to pay $800 Aus for such a screen I can't see why anyone would not want to pay the extra for a LCD screen.

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[Fadingz]

Originally Posted by PCXL-Fan

Still Image quality wise plasma's still have the edge.

nah plasma don't regularly need refills every 2 years. The industry is moving away, but that is because its more expensive to manufacturer/repair plasma vs ccfl-lcd/led-lcd, still potential to burn-in from misuse, somewhat higher energy consumption (+ ~15-20% then ccfl), more universally optimal lighting conditions of lcd, ability to hook them up to computers, misconceptions from consumers such as overblown fear of burn-in, not because plasma's are inferiority in image quality. This is why Plasma continues, and will continue to survive for at least a few more years. If you compare, plasma to ccfl-lcd/led-lcd at any price point, plasmas will still have the better image quality. Still the highest end plasmas have better IQ then the highest end LEDs. A $1000 plasma will still have better image quality then a $1000 lcd. And dynamic contrast ratios mean very little for total image quality. Its just a numbers game. Even a difference in static contrast ratio may not greatly impact the viewing quality, as they are already both high. Plasma's still give sharper clearer image quality during motion then LEDs. LEDs still use the pseudo 120-240hz frame insertion technology. Plasmas are better for scaling to other nonnative resolutions. Plasmas cover more of the color gamut. Those higher end plasmas have ~1inch widths that approach led screens. And for most people 2.5 inch vs 1 inch withs means very little anyways.

Pixel well size of plasma is a killer, it is extremely difficult to manufacture glass small size to confine excited plasma.
LED has the potential to aim to tiny pixel well and wall.
Hence ultra high resolution screen at small size can be realized using LED or QD-LED.

The power consumption of LED to plasma is like 1:10 btw, which is HUGE over time on large displays, what plasma can only do.
This means huge heat dissipation, which results in life span shortening of parts.

When you excite a plasma, some may emit photon to release energy, but some may just get dissipated as heat.
This ratio is rendering the powering consumption of plasma display to be high.

__________________

[PCXL-Fan]

Originally Posted by Fadingz

Pixel well size of plasma is a killer, it is extremely difficult to manufacture glass small size to confine excited plasma.
LED has the potential to aim to tiny pixel well and wall.
Hence ultra high resolution screen at small size can be realized using LED or QD-LED.

indeed thats another factor in why plasma manufacturing cost is higher. LCDs across the board have parts that can universally be shared. And they can be in any size. Not just any size tv, but everywhere we look LCDs are being used, so that gonna eventually mean parts just out of purely mass production and quantity sold, not even factoring in purely material cost are gonna be lower for LCD. Same reason why its cheaper for the companies to produce 32inch tvs instead of 26 or 22 inch. Because the mass qualtities of 32" tvs that are sold, and the fact their manufacturing plants and assembly plants are geared far more to making 32inch tvs, they are cheap, where you'd think a 26 logically be cheaper.

The power consumption of LED to plasma is like 1:10 btw, which is HUGE over time on large displays, what plasma can only do.
This means huge heat dissipation, which results in life span shortening of parts.

When you excite a plasma, some may emit photon to release energy, but some may just get dissipated as heat.
This ratio is rendering the powering consumption of plasma display to be high.

Nope actually its not a 1:10 difference. Whereever or whoever you got that from, it probably originated from marketing jargon. Various led producing TV companies and some retailers just spew out unsubstantiated claims like that to sell their LEDs since they are currently at such a high price point and they can make large amounts of money off of it.

The chart: HDTV power consumption compared - CNET Reviews

Samsung's top of the line 46" B8000 240hz uses 114.48 watts and costs ~$25 (24.72 in the cnet test) a year to run at default settings. ~22 after configuration. The 55" B8500 version costs $29.30 to run a year, ~$26 after calibration.

The Toshiba 46SV670U 46" LED uses 174.87 watts and costs $37.97 to run at default settings for a year.

Samsungs top of the line 50" B850 Plasma uses 207.01 watts and costs $44.73 a year to run on default settings. It does go up to $67 when they turn off some of the default energy saving features in order to improve IQ a bit.

Panasonic's 46" TC-P46G10 plasma runs at 168.78 watts and costs $36.48 to run at default settings for a year. After adjusting the settings for optimal IQ (not the default - compromise between power and IQ) it costs $60.69.

Panasonic's top of the line 58" TH-58PZ800U plasma runs at 196.37 watts & $42.30 a year. After configuration $78.30.

So its more like a 1.5:1 - 3:1 difference between >40inch Plasma and LED backlit tvs.

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Try @ES the ultimate emulator frontend and all in one media player

Originally Posted by Exodus

Yes, I like anime, Street Fighter, Japanese music and download video game music. Yes, I know... I've changed.

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Last edited by PCXL-Fan; January 20th, 2010 at 23:55..

[DarkSamus]

My BenQ v2400eco LED monitor supposedly only costs $7 a year to run!

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As far as handhelds go, well, I get the Nintendo one.
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[PCXL-Fan]

Originally Posted by DarkSamus

My BenQ v2400eco LED monitor supposedly only costs $7 a year to run!

That might be about right. Ever check for yourself how much voltage it pulls?

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Try @ES the ultimate emulator frontend and all in one media player

Originally Posted by Exodus

Yes, I like anime, Street Fighter, Japanese music and download video game music. Yes, I know... I've changed.

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