



MAJOR PROJECT - Blog for the team - Taz, Funmi, Jophie and Sasha, students of MA Interactive Media at London College of Communication, University of Arts London.
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The biggest technical problem for OLEDs is the limited lifetime of the organic materials. In particular, blue OLEDs historically have had a lifetime of around 14,000 hours (5 years at 8 hours a day) when used for flat-panel displays, which is lower than typical lifetime of LCD, LED or PDP technology – each currently rated for about 60,000 hours, depending on manufacturer and model.
The intrusion of water into displays can damage or destroy the organic materials. Therefore, improved sealing processes are important for practical manufacturing and may limit the longevity of more flexible displays.
OLED technology is used in commercial applications such as small screens for mobile phones and portable digital audio players (MP3 players), car radios, digital cameras, and high-resolution microdisplays for head-mounted displays. Such portable applications favor the high light output of OLEDs for readability in sunlight, and their low power drain. Portable displays are also used intermittently, so the lower lifespan of OLEDs is less important here.
Prototypes have been made of flexible and rollable displays which use OLED's unique characteristics. They use amorphous silicon a type of flexible foil rather then glass panels to protect the OLED, thus making them flexible unlike the current OLEDs tv's.
OLEDs have been used in most Motorola and Samsung color cell phones, as well as some Sony Ericsson phones, notably the Z610i, and some models of the Sony Walkman[43]. It is also found in the Creative Zen V/V Plus series of MP3 players. Nokia has also introduced recently some OLED products, including the 7900 Prism and Nokia 8800 Arte.
On October 1st, 2007, Sony became the first company to announce an OLED television.The XEL-1 11" OLED (Organic Light Emitting Diode) Digital Television sells for $2499.99 in Canada (as of April 24, 2008). They are available in the United States at select Sony Style stores for US$2499.99. - not a truly flexible tv, because it is displayed using glass not with the flexible foil called amorphous silicon.
The radically different manufacturing process of OLEDs lends itself to many advantages over flat-panel displays made with LCD technology. Since OLEDs can be printed onto any suitable substrate using an inkjet printer or even screen printing technologies,[30] they can theoretically have a significantly lower cost than LCDs or plasma displays. Printing OLEDs onto flexible substrates opens the door to new applications such as roll-up displays and displays embedded in fabrics or clothing.
OLEDs enable a greater range of colors, brightness, and viewing angle than LCDs, because OLED pixels directly emit light. OLED pixel colors appear correct and unshifted, even as the viewing angle approaches 90 degrees from normal. LCDs use a backlight and cannot show true black, while an "off" OLED element produces no light and consumes no power. Energy is also wasted in LCDs because they require polarizers which filter out about half of the light emitted by the backlight. Additionally, color filters in color LCDs filter out two-thirds of the light.
OLEDs also have a faster response time than standard LCD screens. Whereas a standard LCD currently has an average of 4-8 millisecond response time, an OLED can have less than 0.01ms response time.
Samsung unveiled a 31-inch OLED TV at the January 2008 CES in Las Vegas and is promising much larger screens to come. “We have the technological ability to make 40-inch OLED,” said a spokesman, before adding that it won’t be until 2010 that the company will be in a position to mass produce such panels: - But this wont be totally flexible because it will be encased in glass not using the amorphous silicon.
Sony today unveiled a new screen that will forever change the future of electronic devices. This new 2.5-inch OLED screen is made of a glass substrate that allows you to casually bend the screen. Since the display is wafer-thin, you one day might see these inside magazines as advertisements or perhaps on the back of a cellphone for viewing movies. It uses organic TFT technology to keep clarity in-tact and to retain its 0.3mm thickness.
This display will allow for the development of bigger, better, lighter, and “softer” electronics Sony says. In case you were wondering, the screen has a resolution of 120×169 pixels and weighs only 1.5 grams. Extremely impressive. Imagine if this became a low-cost media solution years down the road. DIY video players made from magazine ads? I think so.
__________________________________________________________No one can deny OLED displays are superior in quality to LCD or Plasma screens. One problem which has been constraining the commercialization of large-size OLED TVs, however, is the high level of power consumption.
On Monday however, Sony and Japanese chemical company Idemitsu announced they succeeded in increasing the internal quantum efficiency (IQE) in deep-blue fluorescent OLED devices to 28.5%. I know, right? Until today, 25% was believed to be the maximum level of luminous efficiency achievable. Among the RGB colors, blue OLED devices are the most energy-intensive.
The two companies have been jointly working on the improvement of OLED display technology since 2005. Sony Japan plans to mass-produce big-screen OLED TVs (20 inches and larger) at the end of 2009.
This is definitively good news since Sony’s current OLED TV XEL-1 is cool but simply too small (11 inches) and too expensive.
________________________________________________Toshiba isn’t about to let Sony get the upper hand in the television market. Yesterday, [October 3rd, 2007] Sony announced an 11-inch OLED TV that is only 0.3-inches thick, has a 1,000,000:1 contrast ratio, and costs $1745. Considered a huge leap in technology, now other companies are scrambling to get on the bandwagon. Toshiba is claiming that by 2009, a 30-inch OLED TV will be available for purchase, ready to compete with anything Sony might have up its sleeve.
One of the major issues with OLED displays is lifespan. Sony’s 11-incher is supposed to only get three to three-and-a-half years of continuous use. Though the average consumer probably won’t be watching that much television, it still isn’t comforting knowing that your TV is going to die eventually. No word yet on what price Toshiba’s 30-inch model will go for.
Toshiba pledges 30in OLED TV will ship in 2009Technium Digital@Sony forms part of the Technium Wales network, a series of technology-led innovation centres dedicated to providing the relevant knowledge, business support and physical facilities to help young technology businesses realise their potential for long-term growth.
With modern, fully serviced office space and a strong relationship with SONY manufacturing, the facility provides the opportunity for companies to go from big ideas to big business.
“It is a massive endorsement when a global corporation like SONY - which is a by-word for innovation - joins forces with the University and public sector in Wales to actively support and participate in such a major initiative.”
Andrew Davies, Economic Development Minister
A "Registration of Interest" form can be downloaded for completion by following the link below:
Alternatively, make an enquiry directly by clicking here, or use the contact details below:
Main address and contact details:
Technium Digital@Sony
Sony Technology Centre
Pencoed
Bridgend
CF35 5HZ
Contact: Evan Jones, Manager
Tel: 02920 444777
E-mail: evan.jones@wales-uk.com
For general enquiries, please contact the Welsh Assembly Government at:
Technium
c/o Welsh Assembly Government
Brunel House
2 Fitzalan Road
Cardiff
CF24 OUY
Tel International: +44 (0)1443 845500
Tel Local (English Speaking): 08450 103300
E-mail: ein@Wales.GSI.Gov.UK