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Blue Phosphorescent Material Will Be a Turning Point in the OLED Market [2022 Second Half OLED Seminar]

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UBI Research, Ripple effects of blue phosphorescent materials (Second half of 2022 OLED Seminar)

UBI Research, Ripple effects of blue phosphorescent materials (Second half of 2022 OLED Seminar)

At the ‘The Second Half of 2022 OLED Accounting Seminar’ held at the FKI in Yeouido on November 9, UBI Research CEO Choong-Hoon Lee predicted that the blue phosphorescent material, an essential condition for the expansion of the OLED market, would be developed in 2024 and commercialized in 2025.

CEO Lee said, “U.S. material company UDC is developing a blue phosphorescent material by mixing TADF with phosphorescent dopant. The lifespan and characteristics of the material are equivalent to those of fluorescent materials two years ago, and the development of blue phosphorescent materials can be a turning point in the OLED market due to the characteristics of mobile devices where power consumption is important.”

UBI Research, Ripple effects of blue phosphorescent materials (Second half of 2022 OLED Seminar)

UBI Research, Ripple effects of blue phosphorescent materials (Second half of 2022 OLED Seminar)

Currently, Samsung Display’s QD-OLED has a structure in which a blue light emitting layer is stacked three times. If a blue phosphorescent material is used instead of fluorescence for QD-OLED, it is possible to replace the existing structure in which the blue light emitting layer is stacked three times with a structure in which the blue light emitting layer is stacked once or twice.

CEO Lee explained, “It is possible to replace not only smartphones and smart watches, but also OLEDs for tablet PCs and automobiles under development with a tandem structure with a single structure. The development of blue phosphorescent materials will accelerate the transition from LCD to OLED.”

UBI Research, Ripple effects of blue phosphorescent materials (Second half of 2022 OLED Seminar)

UBI Research, Ripple effects of blue phosphorescent materials (Second half of 2022 OLED Seminar)

Next, CEO Lee continued his presentation on OLED market trends. The situation is not easy for Korean companies due to the deteriorating market conditions and panel price cuts by Chinese panel makers. According to UBI Research, Samsung Display’s smartphone OLED shipments in the third quarter of this year were 78.9 million units, down 35% from 121.4 million units in the same period last year.

CEO Lee Choong-hoon said, “If you look at OLED shipments by substrate, flexible OLED is similar to the same period of the previous year, but rigid OLED declined sharply. As Chinese panel makers cut rigid OLED panel prices, domestic companies’ position in the rigid OLED market is narrowing. Samsung Display may stop producing rigid OLED panels in the next year or so.” he analyzed.

Finally, even in the first half of 2023, despite the unfavorable OLED market conditions, OLED panel shipments for TVs are expected to increase slightly. CEO Lee said, “The number of OLED panels for TV from 8.7 million this year is expected to increase to 9.5 million next year. LG Electronics is expected to produce 4.5 million WOLED TVs and Samsung Electronics is expected to increase QD-OLED TV shipments from 450,000 this year to 1 million next year.” He added, “Although Samsung Electronics entered the OLED TV market, it remains to be seen whether the deterioration of the overall TV market will affect the OLED TV market expansion.”

▶ 2022 Mid-Large OLED Display Semi-Annual Report Sample Download 

Micro-display’s Challenges From Three Perspectives [2022 Second Half OLED Seminar]

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Professor Hee-Jin Choi of Sejong University, Display and Optical Technology for Realizing Ultra-Realistic Near Eye Display(Second half of 2022 OLED Seminar)

Professor Hee-Jin Choi of Sejong University, Display and Optical Technology for Realizing Ultra-Realistic Near Eye Display
(Second half of 2022 OLED Seminar)

At the ‘The Second Half of 2022 OLED Accounting Seminar’ held at the FKI in Yeouido on November 9, Professor Hee-Jin Choi of Sejong University made a presentation on the theme of ‘Display and Optical Technology for Realizing Ultra-Realistic Near Eye Display’. Professor Heejin Choi analyzed the tasks that next-generation micro-displays must be solved from three perspectives: ‘FoV & Resolution’, ‘Reality’, and ‘Form Factor’.

First, Professor Hee-Jin Choi explained that from the perspective of ‘FoV & Resolution’, the micro-display resolution standard should be applied to PPD (Pixels per degree), which is affected by the viewing angle, rather than PPI (Pixels per inch) applied to general displays. Professor Heejin Choi said, “Based on visual acuity of 1.0, a resolution of 60 PPD or higher must be satisfied for the screen door effect to not appear. 60 PPD is the same resolution as 8K and it is very difficult to achieve on a small screen.”

Professor Hee-Jin Choi of Sejong University, Display and Optical Technology for Realizing Ultra-Realistic Near Eye Display(Second half of 2022 OLED Seminar)

Professor Hee-Jin Choi of Sejong University, Display and Optical Technology for Realizing Ultra-Realistic Near Eye Display
(Second half of 2022 OLED Seminar)

Professor Choi Hee-jin mentioned the visual characteristics that do not recognize the surroundings outside the center of the screen as a way to solve this problem, and emphasized, “Foveted Rendering” technology that applies high resolution only to the center of the screen and low resolution to the periphery can efficiently shorten the rendering time.” Subsequently, he explained that the problem of AR display, which varies the path of light and the position of the eye, can be solved with multiple output rays and eyebox extension technology.

Professor Hee-Jin Choi of Sejong University, Display and Optical Technology for Realizing Ultra-Realistic Near Eye Display(Second half of 2022 OLED Seminar)

Professor Hee-Jin Choi of Sejong University, Display and Optical Technology for Realizing Ultra-Realistic Near Eye Display
(Second half of 2022 OLED Seminar)

Regarding the second point of view, ‘Reality’, he noted that multi-focus is needed for the realism of AR displays, saying, “Considering human vision, between 10 and 12 focusing sections are needed to implement realistic AR displays. “Currently, two focusing sections can be implemented with the current technology, and research is underway to implement four focusing sections.

Finally, regarding the ‘Form Factor’ perspective, Professor Choi said, “The form factor is the least advanced compared to other technologies. The form factor of micro-display is still quite thick and heavy. The ultimate goal of the micro-display form factor is the weight and size of the glasses.”

“It is possible to reduce the thickness of the device by applying a simple optical system and optical folding technology. However, there was a disadvantage of poor light efficiency and brightness. There are many trade-offs in the optical world. Many researchers are actively working on research to solve this problem,” he said at the end of the presentation.

He concluded, “We were able to reduce the thickness of the device by applying a simple optical system and optical folding technology, but there were disadvantages in terms of light efficiency and brightness. In optics, there are many conditions that are in a trade-off relationship. Many researchers are actively conducting research to solve this problem”

▶ 2022 Micro-display Technology Report Sample Download

Introducing DOW Chemical, Inkjet OCR for Foldable OLED [2022 Second Half OLED Seminar]

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At the “2022 Second Half OLED Seminar” held at the FKI Hall in Yeouido on November 9, 2022, Dow Chemical introduced silicon-based inkjet printable OCR that can be used for foldable OLEDs.

In general, OCR is mainly used for rigid OLEDs and OCA is mainly used for flexible OLEDs and foldable OLEDs, but recently, OCA is used for rigid OLEDs with hole design, and development to use OCR for foldable OLEDs is also underway.

DOW Chemical said OCR may not have a smooth shape near the edge and its characteristics depend a lot on the substrate, but replacing OCA with OCR can reduce the process and expand productivity.

In addition, it was mentioned that it is possible to form a thin film of 10 um through amount control, and that it has the advantage of overcoming the difficult step with OCA.

DOW Chemical, Inkjet OCR for Foldable OLEDs (Second half of 2022 OLED Seminar)

DOW Chemical, Inkjet OCR for Foldable OLEDs (Second half of 2022 OLED Seminar)

Acrylic series are widely used as materials for OCA, which is currently used for flexible OLEDs and foldable OLEDs that are currently on the market.

DOW Chemical finished its presentation with the expectation that silicon-based OCR will be wider in the future because it can maintain reliability even in extreme environments due to low viscosity or characteristic changes despite temperature changes.

DOW Chemical, Inkjet OCR for Foldable OLEDs (Second half of 2022 OLED Seminar)

DOW Chemical, Inkjet OCR for Foldable OLEDs (Second half of 2022 OLED Seminar)

▶ 2022 OLED Components and Materials Report Inquiry

Merck Has Completed the Development of Organic Material Samples for Low Dielectric Constant TFE Below 2.5 [2022 Second Half OLED Seminar]

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Touch of flexible OLED for smartphones is divided into add-on and on-cell. Add-on is a method in which a touch electrode is formed on the top of the film and the touch film is adhered to the top of the encapsulation layer through OCA.

On-cell is a method in which touch electrodes are created directly on the encapsulation layer, and is a mainstream technology applied to Samsung Electronics’ “Galaxy” series and Apple’s “iPhone” series.

The on-cell method reduces material costs because it creates electrodes directly without using films and OCA, while the absence of films and OCA shortens the distance between touch electrodes and TFT, increasing signal-to-noise (SNR).

Merck, Low-K Organic Materials for TFE(Second half of 2022 OLED Seminar)

Merck, Low-K Organic Materials for TFE(Second half of 2022 OLED Seminar)

At the “2022 Second Half OLED Seminar” held at the FKI Hall in Yeouido on November 9, 2022, Merck announced that it is developing a low dielectric constant organic material for TFE to reduce SNR and is currently developing a 3.1 dielectric constant value for TFE to below 2.5.

Merck noted that blocking noise from TFTs is ultimately the role of organic matter, which occupies the thickest part of TFE, and revealed that it has developed a sample material available in the N2 environment.

Lastly, Merck concluded its presentation on organic materials for TFE, saying that the lower dielectric constant of organic materials can affect reliability due to lower membrane density, but that reliability has been secured in the Lab environment, and that they will secure reliability in mass production through cooperation with panel companies.

Merck, Low-K Organic Materials for TFE(Second half of 2022 OLED Seminar)

Merck, Low-K Organic Materials for TFE(Second half of 2022 OLED Seminar)

▶ 2022 OLED Emitting Material Report Sample Download

Merck, now it is time to consider the refractive index of common layer materials.

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At the ‘OLED settlement seminar for the first half of 2022’ held at COEX on June 23, Merck’s Kim Jun-ho, head of research institute, said, “The concept of the refractive index of the emitting layer is often applied to the capping layer on the cathode, but now it is also required for HTL” and mentioned that the light extraction efficiency can be improved through the optimized refractive index design of HTL.

Next, Kim said, “Because the refractive index of HTL has a trade-off relationship with the hole transport capacity, it is difficult to adjust the refractive index,” and “Even though it was lowered to 1.77 from 1.85, the light extraction efficiency could be improved by 7% without an increase in the driving voltage or a decrease in electron mobility.”

Recently, panel makers are continuously developing the OLED light extraction efficiency. This is because by increasing the light extraction efficiency, as a result, the battery life can be increased. Representative examples include a high-refractive capping layer and micro lens array, and an on-cell film that removes the polarizer and uses a color filter.
The concept of the refractive index of the light emitting, which had been concentrated on the capping layer, is extended to the common layer, and it is expected that panel makers will intensify technological competition, and that there will be many changes in the supply chain of emitting materials of panel makers in the future.

Choong-Hoon Yi, CEO of UBI Research, “Korean display companies must have price competitiveness as well as OLED technology competitiveness”

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Although there is still a gap in display technology between Korea and China, it has been argued that Korean display companies should have price competitiveness as soon as possible.

On the 23rd, at the ‘OLED Settlement Seminar for the first half of 2022’ held at COEX in Samsung-dong, Seoul, UBI Research CEO Choong-Hoon Yi made a presentation on ‘Forecast of the small OLED market, which China is chasing fiercely’.

CEO Yi announced, “Currently, the media reports that the technological gap between Korea and China has almost narrowed, but making and displaying products and mass-producing products are two different things, and the technological gap between Korea and China is still significant.” He continued, “Samsung Display is planning various products such as slideable and Z-folding based on technological competitiveness. However, it will be difficult to commercialize it immediately because the slideable phone invades the existing foldable phone market.”

CEO Yi said, “It is very important not only to develop technological competitiveness, but also to increase price competitiveness. The reason Korean companies closed the LCD business is not because of the good technology of Chinese companies, but because they were pushed back in price competitiveness.”, and “As the technology advances, the performance difference felt by ordinary consumers becomes insignificant, so products with good price competitiveness are inevitable in the market,” he analyzed.

Finally, “China’s OLED industry is growing under the enormous support from the government. In order not to lose the lead in the OLED market like LCD to China, it is essential for domestic companies to prepare for price competitiveness and the government’s support policy,” he concluded.

GrapheneLab surpasses the ppi limit with a plated metal mask

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GrapheneLab, a graphene commercialization technology company, announced that it is possible to manufacture FMMs over 800ppi using graphene.

At the ‘UBI Research First Half 2022 OLED Settlement Seminar’ held at COEX in Samseong-dong, Seoul on the 23rd, GrapheneLab CEO Yong-duk Kwon said, “In the early 2000s, FMM technology, which started in the early 2000s, was not interested in the plating method. It is changing,”, and “After 2013, many patents related to the plating method FMM manufacturing technology have been applied, and it is easier to apply the plating method than the currently used etching method in order to go to high resolution.”

Next, CEO Kwon said, “We moved away from the existing limiting etching method FMM and applied the plating method FMM. Compared to the etching method, where 400ppi was the limit at the same thickness, the plating method realized more than 600ppi.”, “Etched metal mask has a dead zone of 8um in length due to the INVAR structure that becomes sharp like a dot when etching at a depth of 20um, whereas there is no dead zone during pattern plating of the plated metal mask.”

Lastly, CEO Kwon said, “For the MSAP electroforming technology, a low coefficient of thermal expansion with a thin thickness is required. As a result of measuring the coefficient of thermal expansion using TMA on the plated sample, it was measured up to 3.1ppm, and it went down to 2.5ppm without heat treatment.”

UBI Research holds the 1H Semester Seminar “OLED Market Analysis and Latest Technology Seminar (June 30, 2017 Federation of Korean Industries Head Office Building)

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■ 2017 1H general review of the technical issues and the market of OLED industry.

■ 2H09 market outlook and change point forecast through 1H issue analysis.

UBI Research will hold the 1H semester seminar: OLED market analysis and latest technology seminar which will be able to forecast OLED market issues in the first half of 2017 and predict market outlook and change points in 2H07 on June 30 (Fri) at Yeouido FKI Conference Center.

It will be analyzed the technical issues and market in the OLED industry in the first half of the 17th year under the theme of “OLED Market Analysis and Latest Technologies”. In addition, it seems to forecast the 2H OLED market and change points for 2H through 1H issue analysis.

In this seminar, technology development status and prospects of TADF OLED, Soluble OLED, and Flexible OLED technology that are emerging as next generation OLED technology will be intensively introduced with the key experts in related fields. It will be a place to look at the latest OLED technologies and to see in advance how OLED future technologies will evolve.

▲ Market forecasts by analyzing OLED industry investment and mass production in the first half of 2017(Lee Choong-Hoon, representative of UBI Research), ▲ A new display paradigm ‘OLED'(Kwon Seong-Ryul, team leader of Dongbu Securities), will intensively analyze future display industry with the theme. ▲ Recent trends of TADF OLED luminescent materials(Prof Lee Jun-Yeob of Sungkyunkwan University), ▲ A New approach to improve OLED luminescence efficiency(Prof. Kim Jae-Hoon, Hanyang University), ▲ Development of Highly Efficient Multi-Functional Emitting Materials for Organic Light-Emitting Diode Application(Prof Jin Sung-Ho of Pusan National University), ▲ Flexible Display Technology Development Trends and Challenges(Prof. Lee Ki-Yong, Hanyang University), ▲Plane Source Evaporation for Very High ppi AMOLED (OLEDON/Prof. Hwang Chang-Hoon of Dankook University). With the theme of ‘It is time to challenge’ he will present the latest technology issues and directions for further growth of the display industry.

In this seminar, we will take a comprehensive view of the market and technology from the overall OLED industry, investment perspective, and economic perspective, it is expected to be a place where various high-quality information and networking exchanges will be formed along with domestic core experts, and the status and future of display technology can be forecasted.