Posted by
timothy
on from the patience-wearing-thin dept.
crwulff writes "The Rochester Democrat and Chronicle today is carrying a story about Kodak's newest OLED display venture. Unfortunately only a prototype to look at here but at least it is on the way in a couple years." It's worth it just for the photograph. Maybe best to hold off on a plasma TV ...
More Info on OLED
by
PunchMonkey
·
· Score: 5, Informative
The article is pretty sparse about what OLED is... Dupont has a pretty cool page about their displays with some info that reminds me of my science text book back in high school.
-- I'll have something intelligent to add one of these days...
Yes, the O stands for organic, which in this case
by
kfg
·
· Score: 5, Informative
means *plastic.* Polymers are organic compounds, which means containing carbon, as opposed the the silicon of traditional diodes.
I've also got his hot news flash for you, you're covered in bacteria already.
KFG
Re:These things make me nervous
by
Teun
·
· Score: 5, Informative
Organic light emitting diodes (OLEDs) are optoelectronic devices based on small molecules or polymers that emit light when an electrical current flows through them. They are being developed for applications in flat panel displays. A simple OLED consists of a fluorescent organic layer sandwiched between two metal electrodes. Under application of an electric field, electrons and holes are injected from the two electrodes into the organic layer, where they meet and recombine to produce light.
Polymers by such tongue twisting names as polythiopene (red), polyfluorene (blue) and polyphenylenvinylen (green) consist of aromatic benzene rings which are pearl strung via carbon double bonds. As in conventional light-emitting diodes, the benzene electrons are excited by an exterior voltage of 3 to 5 Volt. In returning to their original state they emit light in a colour specific to their material which is exceptionally brilliant and soft.
-- "The likes of Facebook and WhatsApp are free to those whose privacy is of zero value."
3-color or 4-color?
by
Smallpond
·
· Score: 4, Informative
The problem with LED displays is the reverse of the problem for printing. In printing its tough to get true black by combining cyan, magenta and yellow, so they do 4-color printing, CMYK (K for black).
With LEDs, they want to do RGBW (W for white) to get true whites, but the article doesn't say whether they're doing three or four colors. Here's an article on organic white LED:
In addition to red, green, and blue OLED materials, Kodak researchers have successfully formulated white-emitting materials. Using a dual emitting layer--each emitting in a complementary color--they have produced white OLEDs that yield not only an excellent white hue, but a good color stability over a wide range of light levels. The white hue is easily adjustable to any shade from pale yellow to light blue. The device life exceeds exceeds 20,000 hr (Figure 2).
Just as moldy as the other organic compounds around your house, and in your computer, like the case of your existing monitor.
Organic != biodegradable, it means containing carbon, like a diamond, which is about as far from biodegradable as you can get.
OLED's are are made in polymer sheets rather than in individual chips of silicon. Ultimately this will make them cheap, rugged, rollable and producable in almost arbitrary sizes, like wallpaper.
I feel a Ray Bradbury story coming on.
KFG
Re:Will they be able to compete with lcd in 2 year
by
ekephart
·
· Score: 4, Informative
With the costs of energy constantly rising? Yes.
LCDs use about half the power as CRTs (Viewsonic). Sanyo and Kodak already have a 5.5 active matrix OLED that runs on 2 watts at 10 volts. While the 15 inch model would presumably use 9 times this, that's still close to half the power consumption of a similar LCD.
-- sig
Re:2 to 3 years off?
by
Powercntrl
·
· Score: 4, Informative
I've found that my "high-end" CRT, which costs LESS than even a basic LCD, displays much better, and is far more flexible.
More flexible, yes... I'll give you that. You can't beat a CRT for quick refresh rates needed for serious gaming and a good picture in any supported resolution.
What a flat panel LCD monitor lacks in resolutions, it makes up for in display consistency. There is no pincushioning, no color seperation problems, the picture fills the entire screen perfectly, a horizontal or vertical line of pixels is perfectly straight and there is absolutely no flicker. Once you get used to looking at an LCD on a regular basis, the flaws in CRTs really start to become more apparant. I'll admit they're not for everyone, but for mostly browsing the web, wordprocessing, cropping and resizing images and the infrequent game or two, you can't beat an LCD.
--
--- DRM is like antifreeze, to the MPAA/RIAA it's sweet, to the consumers it's poison.
will OLED replace LCD?
by
u19925
·
· Score: 5, Informative
If we had OLEDs in market, people would be inventing LCDs. Both have advantages and disadvantages and it is not clear, if OLEDs would be able to overcome all the disadvantages it has against LCD. Here are few of them:
1. Color accuracy: Each colored dot on the screen will be composite of three LEDs. If their relative light output changes over time, you get color distortion. With LCDs, the transpanrency of each individual pixel controls color. Since this is known to be stabel for a long time (even before color LCDs came, this was known), this is not a problem.
2. Active matrix. OLEDs may be as hard to manufacture or even more than active matrix LCD.
3. Each pixel in OLED takes more current than in LCD. This makes OLED pixels more likely to fail.
It seems, the biggest advantage would only be in power comsumption and hence in portable devices likes laptop, PDA, cell phones etc. For others like home computer LCD screen, LCD TV, home appliances screen and other display, LCD would continue to be used for a long time.
Re:Whats the deal with blue?
by
DeComposer
·
· Score: 4, Informative
Slashdot Mirror
...at least it is on the way in a couple years.
That's kind of what they said last year.
pi = 3.141592653589793helpimtrappedinauniversefactory7
Better pictures, more info
- James
The article is pretty sparse about what OLED is... Dupont has a pretty cool page about their displays with some info that reminds me of my science text book back in high school.
I'll have something intelligent to add one of these days...
means *plastic.* Polymers are organic compounds, which means containing carbon, as opposed the the silicon of traditional diodes.
I've also got his hot news flash for you, you're covered in bacteria already.
KFG
Yeah right, have a look at this this site
Organic light emitting diodes (OLEDs) are optoelectronic devices based on small molecules or polymers that emit light when an electrical current flows through them. They are being developed for applications in flat panel displays. A simple OLED consists of a fluorescent organic layer sandwiched between two metal electrodes. Under application of an electric field, electrons and holes are injected from the two electrodes into the organic layer, where they meet and recombine to produce light.
Or have a look here
Polymers by such tongue twisting names as polythiopene (red), polyfluorene (blue) and polyphenylenvinylen (green) consist of aromatic benzene rings which are pearl strung via carbon double bonds. As in conventional light-emitting diodes, the benzene electrons are excited by an exterior voltage of 3 to 5 Volt. In returning to their original state they emit light in a colour specific to their material which is exceptionally brilliant and soft.
"The likes of Facebook and WhatsApp are free to those whose privacy is of zero value."
The problem with LED displays is the reverse of the
problem for printing. In printing its tough to get
true black by combining cyan, magenta and yellow, so
they do 4-color printing, CMYK (K for black).
With LEDs, they want to do RGBW (W for white) to
get true whites, but the article doesn't say whether
they're doing three or four colors. Here's an
article on organic white LED:
Nature
Just as moldy as the other organic compounds around your house, and in your computer, like the case of your existing monitor.
Organic != biodegradable, it means containing carbon, like a diamond, which is about as far from biodegradable as you can get.
OLED's are are made in polymer sheets rather than in individual chips of silicon. Ultimately this will make them cheap, rugged, rollable and producable in almost arbitrary sizes, like wallpaper.
I feel a Ray Bradbury story coming on.
KFG
With the costs of energy constantly rising? Yes.
LCDs use about half the power as CRTs (Viewsonic). Sanyo and Kodak already have a 5.5 active matrix OLED that runs on 2 watts at 10 volts. While the 15 inch model would presumably use 9 times this, that's still close to half the power consumption of a similar LCD.
sig
I've found that my "high-end" CRT, which costs LESS than even a basic LCD, displays much better, and is far more flexible.
More flexible, yes... I'll give you that. You can't beat a CRT for quick refresh rates needed for serious gaming and a good picture in any supported resolution.
What a flat panel LCD monitor lacks in resolutions, it makes up for in display consistency. There is no pincushioning, no color seperation problems, the picture fills the entire screen perfectly, a horizontal or vertical line of pixels is perfectly straight and there is absolutely no flicker. Once you get used to looking at an LCD on a regular basis, the flaws in CRTs really start to become more apparant. I'll admit they're not for everyone, but for mostly browsing the web, wordprocessing, cropping and resizing images and the infrequent game or two, you can't beat an LCD.
---
DRM is like antifreeze, to the MPAA/RIAA it's sweet, to the consumers it's poison.
1. Color accuracy: Each colored dot on the screen will be composite of three LEDs. If their relative light output changes over time, you get color distortion. With LCDs, the transpanrency of each individual pixel controls color. Since this is known to be stabel for a long time (even before color LCDs came, this was known), this is not a problem.
2. Active matrix. OLEDs may be as hard to manufacture or even more than active matrix LCD.
3. Each pixel in OLED takes more current than in LCD. This makes OLED pixels more likely to fail.
It seems, the biggest advantage would only be in power comsumption and hence in portable devices likes laptop, PDA, cell phones etc. For others like home computer LCD screen, LCD TV, home appliances screen and other display, LCD would continue to be used for a long time.
Blue is a harder color to generate.
Here's an article that describes some of the history and challenges of creating a semiconductor that emits blue light.
Karma