Toshiba pledges 30in OLED TV will ship in 2009
Rather bigger than Sony's latest
Toshiba has cocked a snook at the 11in OLED TV Sony announced this week and pledged to bring a 30in model to market effectively within the next two years.
A company spokeswoman yesterday told IDG that the screen would go on sale in 2009.
Sony unveiled its XEL-1 OLED TV in Japan - an ultraslim screen that contains a display panel that's just 3mm thick. That, along with a massive contrast ratio of 1,000,000:1, are the big advantages to OLED (organic light emitting diode) technology.
It's all about the backlight - or, rather, the lack of it. Because the diodes themselves emit light, no backlight is needed. That allows the panels to be made much thinner than LCDs and plasma TVs, and since there's no light illuminating even black pixels, the image is brighter and displays a higher contrast. Power consumption is reduced too, partly because there's not always-on backlight, but also because unilluminated diodes consume no power.
The downside: OLED panels don't last as long as LCDs and they're harder to make, which is why Sony's starting out with a small, 11in screen. OLED lifespans are currently rated at around just under three-and-a-half years' continuous usage, compared to under six for LCD technology. That's continuous use, not the much more occasional usage of the real world.
Toshiba is also developing, with Canon, TVs based on SED (Surface-conduction Electron-emitter Display) technology, said to produce a picture a bright as an CRT TV's but in a flat-panel casing. However, both companies have had a tough time getting the system out of the door.
A shame for japanese engeneers
I wonder what became of the old japanese spirit of getting down devices to a usable size. I mean 30 inch, where can one put such a gigantic thing? And further more it doesn't have any usable flat top. You cannot put anything on top of your set so you waste even more space.
Why can't they think about a simple device with an OLED front which can display "windows" of content. For example I have one clock and 2 video inputs, or perhaps a cheap oscilloscope, etc.
Well durability is really a problem. People just expect their TVs to last 30-40 years, but LCDs also cannot promise that.
You'd think they'd mention response times.
A fast LCD display element has a response time of a few miliseconds. A fast OLED display element has a response time of a few microseconds. OLEDs are about a thousand times faster than LCDs, far too fast for any lag to be perceivable.
These spokesbods are supposed to highlight a product's strengths, aren't they?
On the subject of consumer durable durability, I think all of our family's TVs did at least 12 years service apiece, and none of them were ever disposed of until they were thoroughly knackered. We were using a Sony Trinitron with a tuning knob well into the 1990s, and I can still remember the channel positions (ITV = 25, C4 = 28, BBC1 = 32, BBC2 = 35). O tempora, o mores.
Not LED as we know it
OLED have more in common with 1960s Electroluminescent panels, which also suffered from lifetime issues.
They have an Anode & Cathode hence "Diode",
They emit Light
They are based on organic chemistry
Thus Organic Light Emitting Diodes OLED.
The Sony screen is only 11", a lot of its power consumption is likely the electronics. You need to compare 37" screens.
LCD only allow about 1/5th of the backlight. Unfortunately some OLED screens do not use Red, Green & Blue emitters but Blue/Violet/UV OLEDs and phosphor or even white via phoshors and then coloured stripes making them less efficient than LCDs.
OLEDs are not really at all the same animal as conventional LEDs, hence not the same efficency, colours or life. Really they are EL panels.