Wednesday, May 30, 2007

OLED technology to make minor inroads into TV market, says iSuppli

OLED (organic light-emitting diode) display technology is set to make minor inroads into the TV market during the next few years, iSuppli predicts.

Now mainly relegated to handset displays, OLED TV shipments will rise at a compound annual growth rate (CAGR) of 170.6% to reach 1.2 million units in 2012, up from 8,000 in 2007. Sales revenue for OLED TVs will increase to US$691 million in 2012, rising from less than US$1 million in 2007, iSuppli forecasts.

Sony spurs OLED TV talk

"Interest in OLED TVs has been stimulated by Sony's recent announcement that it will offer a product using the technology by the end of the year," said Vinita Jakhanwal, principal analyst for mobile displays at iSuppli. "Sony cited OLEDs' ultra-thin form factor and higher contrast and richer colors compared to conventional LCD TVs."

In response to Sony's announcement, Toshiba Matsushita Display (TMDisplay), the display arm of the con­sumer-electronics giant Matsushita, also announced acceler­ated availability of 20.8-inch active-natrix OLED (AM OLED) panels for OLED TVs, Jakhanwal added.

TV suitability

Indeed, AM OLED technology is suitable for TV in many regards, iSuppli believes. OLEDs offer fast response time, good color, high brightness, excellent viewing angles and high contrast ratios. Furthermore, OLEDs don't need backlights, making them potentially thinner than the alternative flat-panel technologies on the market.

Moreover, the resolutions needed in the TV market are attainable with OLEDs. OLED TVs in larger sizes, i.e. greater than 20-inches, could be sold by the 2012 timeframe. Most likely, these TVs will use polymer panels made by inkjet printing in the largest sizes, but small-molecule OLEDs made by evaporation techniques also could be used in TVs.

However, there are shortcomings to OLED technology that will prevent wider adoption in the TV market. The main challenges are poor manufacturing yields, limited lifetimes and pricing.


OLEDs get active

Manufacturing processes for AM OLEDs now are being tested for small sizes like two and 2.4 inches. Manufacturing these small-sized panels is proving to be a challenge. Producing AM OLEDs in larger sizes will be an even greater challenge. More time is needed to establish manufacturing processes for large panels, and to build equipment that can make such panels efficiently. Inkjet printers for fourth-generation (4G) substrates are still in the beta-testing phase.

Thus, it is likely that the first OLED TVs will be small and designed for novel locations such as kitchens or bathrooms. The total available market for this sort of TV is small.

Later, as technical and manufacturing capabilities grow, OLEDs may move into more standard-size TVs at dimensions of 20 inches or larger. This will happen near the end of the forecast, but only with continued investments and commitments from major polymer OLED suppliers.

Due to high manufacturing costs, AM OLEDs are expected to be considerably more expensive than LCD panels for the foreseeable future. OLED TV panels are expected to be twice as expensive as LCD TV panels in 2011.

Crowded market

Another challenge for OLEDs in the television market is the large number of competitive technologies vying for a share of sales. The TV market already is flooded with options: CRT, LCD, PDP (plasma display panel), four types of projection systems and the potential for a variety of novel technologies like surface-conduction electron-emitter display (SED) and carbon-nanotube field emission display (FED).

Consumers, for the most part, do not care about particular technologies. Instead they tend to look only at the picture quality and the price, and secondarily at the size and depth. This may make it difficult for OLEDs to gain consumer awareness.

The plethora of technologies also may make it hard for OLED TV to attract the attention of end-product OEMs and channel vendors.

Because of this, OLED will be limited to less than half of 1% of the 242.7 million unit worldwide TV market in 2011, according to iSuppli.

Samsung says Sony will fail to deliver OLED TV

Samsung has stated that it does not believe Sony will be able to deliver on its promise to begin consumer sales of OLED screens this year. The Japanese brand has caused rivals to accelerate thier plans for OLED screen development, after pledging that it will begin sales of eleven-inch monitors before the end of the year. Organic Light Emitting Diode technology allows high resolution displays to be created from wafer-thin panels. As OLED screens are self-illuminating there is no need for an LCD-style backlight.
Yoo Eui-jin, vice president and chief of Samsung SDI’s OLED team, said “I hope Sony will really do it, but considering circumstances, I doubt they will be able to start selling it this year. Maybe it would be possible for them to make a hundred or a thousand units as artifacts, but no more than that.”
Samsung is currently pushing ahead with plans to introduce AM (Active Matrix) OLED screens for mobile phones and portable devices, rather than TV.
Sasmung SDI claims to have developed the world’s thinnest 2.2-inch AM-OLED. Measuring just 0.53 millimeters thick, the company says that it is lighter, brighter and more energy-efficient than LCD. Mass-production of the tiny panel is expected to begin this summer. However, for OLED to really move forward, panel makers have to improve yield efficiency. Samsung admits that only four out of ten AM-OLED panels are currently suitable for use.

Thursday, May 24, 2007

Sony's world's first 16.7 million color flexible OLED


Oh boy, another bendy display we won't likely see on the market any time soon. This time it's Sony's turn to tout with this, their 2.5-inch, 160 x 120 pixel OLED display on a flexible plastic film. Better yet, this organic TFT delivers a relatively stellar 16.7 million colors compared to the 262k and 16k colors Samsung and LG.Philips, respectively, were showing off last week. That's a world's first 24-bit color depth for these types of displays. Take that Samsung. The display also measures a mere 0.3-mm thin which easily bests the hapless Korean (and Dutch) giants. The only downside (if you call it that) is the display's "greater than" 1000:1 contrast ratio compared to Samsung's 10,000:1 rating. But by now you've learned to take contrast measurements with a grain of salt, right?