Solution based OLEDs - Page 4

Taiwan's ITRI research institute developed a long-lasting OLED blue emitter. The researchers used a green phosphorescent emitter with a new double metal structure - that emits a blue light. The so-called Plasmon-Coupled Organic Light Emitting Diode (PCOLED) structure's lasts 27 times as long as a blue fluorescent emitter.

The researchers explain that a regular green phosphorescent emitter always emits a very weak emission. By using the double-metal structure, more plasmons are generated which means a larger blue emission. This is not an up-conversion process - but merely a change in conditions within the green material. This condition was actually discovered by accident.

During the OLED World Summit, an analyst from UBI gave an interesting presentation, showing the company's view of the current status of the OLED TV industry, and their OLED market forecasts for upcoming years.

So first of all, we have LG and Samsung. LGD has obviously been successful in launching WOLED OLED TVs, and scaling up to mass production has been achieved. LG is also hopeful that solution processing will enable them to produce RGB-structured OLEDs efficiently. LG is collaborating with Merck and Espon on printing technologies.

Update: originally we posted that the market for solution-based OLEDs will be $395 million in 2020, but the correct UBI is estimate is much higher - $2.4 billion

UBI Research estimates that solution based OLED processes could reduce the price of a 55" OLED TV panel by as much as 43" compared to the currently used WRGB evaporation based process.

UBI further says that solution-based OLEDs will be cheaper to produce than LCD panels. The company estimates that companies will start mass producing solution-based OLED TVs in 2018, and the market of solution-based panels will reach $2.4 billion by 2020.

DuPont announced the opening of a new state-of-the-art, scale-up manufacturing facility designed to deliver production scale quantities of advanced solution-based printed OLED materials. DuPont specifically says that these materials will target OLED TV applications.

The new OLED facility has large-scale formulation systems and can support simultaneous production of multiple product lines. DuPont invested over $20 million in this new facility, which was also funded by a grant from the state of Delaware back in 2012.

LG Display is one of the two companies that lead the OLED industry, and the Korean display maker recently announced a major shift in focus from LCD displays to OLEDs. We conducted a short interview with an official from LGD regarding the company's OLED business goals and aims.

Q: LGD's CEO recently gave a very exciting speech regarding OLEDs, as the company shifts its focus towards OLEDs. What made you take that decision? How do you see the OLED TV market evolving in the next few years?

Market competition is getting fiercer with Chinese manufacturers rapidly catching up in terms of technology and capacity. In response, we recognize that differentiation in product and technology is essential to growth and maintaining leadership in the display industry.

Kateeva and DuPont announced that they will co-develop solutions for ink-jet printed OLEDs - specifically they will optimize DuPont's soluble materials for Kateeva's inkjet systems. The two companies hope this collaboration will enable then to offer a simple and highly-effective OLED TV printing process.

This follows Kateeva's agreement with Sumiomo Chemical that aims to pair Sumitomo's PLED materials to Kateeva's YieldJet OLED ink-jet printing platform.

According to IHS, the OLED TV market will see slow growth unless producers manage to apply new technologies - mainly printing processes based on soluble materials and flexible substrates. If both technologies are to be adopted, IHS sees OLED TV shipments reaching almost 40 million units in 2023.

In the chart above, IHS Uses three cases. In Case 1, OLED TV makers use glass substrate and an evaporation process. In case 2 they adopt a printing process and soluble materials, and Case 3 assumes a flexible substrate is used as well.

DuPont has been working on OLED materials and processes for a long time, but it's been a while since we heard any update. David Flattery, DuPont's OLED unit Director of Operations was kind enough to update us on the company's materials and OLED technologies.

Q: Dave - thanks for this interview. We know that DuPont is focusing on soluble OLED materials and processes. When do you see the OLED display industry starting to adopt such materials?

DuPont is focused on developing OLED materials for evaporation and soluble technologies, as well as working with our partners on our proprietary printing process.

Many in the industry believe that 2017 will be the year of mass production for printed OLED televisions, and while we cannot disclose the manufacturing plans for our partners, we have already seen one large manufacturer announce that they will pilot solution- processed OLED displays up to gen-8 in 2015.

Kateeva and Sumiomo Chemical announced a non-exclusive key partnership to pair Sumitomo's PLED materials to Kateeva's YieldJet OLED ink-jet printing platform. The two companies hope this collaboration will lead to adoption of P-OLED inkjet printing by OLED TV makers.

Kateeva and Sumitomo will cooperate to co-develop high-quality reference data for customers, which will be optmized to Kateeva's platform and Sumitomo's inks.

According to OLEDNet, Seiko Epson developed a new OLED ink-jet printer head that can achieve a resolution of 360 PPI. This high-density print head uses two 180 PPI nozzles in 2 offset rows. The company managed to print prototype bottom-emitting and top-emitting OLED devices using this print head.

OLEDNet says that Seiko Epson is now aiming to develop a 600 PPI ink-jet printer head, by using two rows of 400 PPI nozzles.