Tecnology trend

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.

To www.digitimes.com