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Home > Press > OLED Lighting developments in Japan

A radar chart comparing the current attributes of OLED and LED lighting.

Source: IDTechEx
A radar chart comparing the current attributes of OLED and LED lighting.

Source: IDTechEx

Abstract:
According to analyst company IDTechEx, OLED and LED lighting are expected to compete directly in many instances in order to gain market share in the next decade. As discussed in the newly launched report, "OLED vs LED Lighting 2013-2023: Forecasts, Technologies, Players" (www.idtechex.com/OLED), LED lighting has come a long way and offers a better performance than OLEDs, and that at a lower cost. OLED lighting will therefore only gain market success if it clearly defines its unique selling points and carves out initial market niches. In that case, the market for OLED lighting is expected to reach $1.3 Billion by 2023.

OLED Lighting developments in Japan

Cambridge, MA | Posted on June 3rd, 2013

Developments in East Asia are critical and the IDTechEx Printed Electronics Asia 2013 conference in Tokyo, Japan on July 9-10 is going to be shedding "light"- pun intended! - on the major developments of this market segment (www.PrintedElectronicsAsia.com).

OLED lighting developments in Japan

Earlier in May, Panasonic Corp announced that it has developed a white OLED with the world's highest luminous efficiency of 114 lm/W. Improvements in the efficiency of this OLED device were due to the company's focus on optimizing light extraction technology for an all-phosphorescent white OLED. As a reminder, Panasonic Idemitsu OLED Lighting, a joint venture of Panasonic and Idemitsu, began volume production of OLED lighting panels in October 2012. The partnership was established back in 2011,with an initial investment of $182 Million, Panasonic having a 51% stake and Idemitsu 49%.

Konica Minolta is going ahead with commercialization as well, making its Symfos OLED lighting panels available in a 5-panel sample set (7.4cm x 7.4cm with a thickness of just 1.9mm). Using Konica Minolta's proprietary blue phosphorescent materials, the panels deliver luminous efficiency of 45lm/W and have a lifetime of 8,000hrs.

This luminous efficiency, according to roadmaps by Konica Minolta, is expected to reach 120lm/W by 2015, which is close to the efficiency LED lighting (around 140 lm/W). These efforts of improving efficiency, something that's also witnessed in other parts of the world like the USA or Europe, are in contrast to what is observed in Taiwan for example, where the focus is on expanding capacity for existing OLED panels, without significant work on performance optimization.

Barrier Technologies for flexible OLEDs

Identifying the right solutions for encapsulation of flexible OLEDs has been a top priority for most companies developing OLED technologies. Flexibility in form factor without compromising lifetime is seen as one of the key selling points of OLED lighting hence, developments of flexible barriers for oxygen and moisture are paramount for the future of OLED lighting.

One of the approaches is that of Asahi Glass Company, that first demonstrated its flexible glass at SID's Display Week in 2011. At only 0.1mm thick, the company's engineers came up with an easier way to handle the ultrathin glass: The technique uses an adsorption layer to temporarily attach the 0.1-mm-thick sheet to a 0.5-mm-thick sheet of carrier glass, which is much easier to handle during fabrication of devices.

Asahi's "sheet-to-sheet method" of handling ultrathin glass allows the glass to be handled in existing manufacturing lines, the company says. The carrier glass can be easily removed, and the ultrathin glass substrate combined with the carrier glass does not directly contact manufacturing equipment, preventing the glass substrate from being scratched. The resulting resistance to heat and chemical treatments used for manufacturing displays is as high as that of a normal glass substrate.

Konica Minolta on the other hand is following a different path in their development of flexible encapsulation for OLEDs. The company has developed the Flexent transparent barrier film having utilized the wealth of knowledge in fabrication techniques such as simultaneous multilayer coating, vacuum film formation and dry coating at atmospheric pressure utilizing plasma discharge, and has on offer barrier films characterized by water vapour transmission rates (WVTRs) ranging from 10-3 to 10-6 g/sq.m/day

These companies, along with many others will all be present at Printed Electronics Asia, on July 9-10 in Tokyo, Japan. Do not miss the opportunity to network with them at one of the most prestigious global events on emerging technologies in Asia.

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For more information, please click here

Contacts:
Mrs Cara Harrington

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