The purchase volume of OLED emitting materials in the third quarter of 2024 is expected to reach 32.7 tons, the highest ever purchase volume of emitting materials in 2024

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According to UBI Research’s ‘4Q24_Quarterly OLED Emitting Material Market Tracker’, the purchase volume of emitting materials in the third quarter of 2024 was calculated to be 32.7 tons. Previously, material purchases were highest in 2021, when the market expanded due to COVID-19, but the all-time high was renewed in the third quarter of 2024. Considering the characteristics of OLED emitting materials, which show the highest usage in the fourth quarter of every year, it is expected that 2024 will see the highest usage ever.

Looking at each company, Samsung Display consistently holds the highest market share. Samsung Display had a 41.4% share in the entire OLED emitting material market based on purchase volume, followed by LG Display with 20.5%, BOE with 11.6%, and Visionox with 8.3%.

By substrate, RGB OLED still maintains the 80% level with a market share of 83.7% based on purchase volume, and as 8.6G lines begin to operate in earnest, RGB OLED’s market share is expected to gradually decline. WRGB-OLED’s market share was 11.3%, similar to the second quarter, and QD-OLED’s market share was 2.8%.

The market share of RGB 2 stack tandem OLED once rose to 6.4% in the second quarter due to a surge in iPad Pro OLED shipments but fell to the 2.2% range in the third quarter due to low demand. Compared to panel shipments, IT devices that use 2-stack tandem OLED for smartphone OLED, which uses single stack OLED, have large panel areas and have two light-emitting layers, so material purchase volume accounted for a higher share than shipment volume.

However, as BOE’s 8.6G line was confirmed to supply OLED for smartphones first, the growth of the 2 stack tandem OLED market was in the hands of Samsung Display. Starting in 2026, when OLED is expected to be applied to MacBook Pro, the purchase amount of light emitting materials applied to 2 stack tandem OLED is expected to more than double compared to 2024. The 2-stack tandem OLED panel supplied to MacBook Pro is expected to be supplied first by Samsung Display.

Junho Kim, UBI Research analyst(alertriot@ubiresearch.com)

▶OLED Emitting Material Market Track Sample

Korean OLED Panel Makers’ Emitting Material Purchases Reach 51.2% in H1, with a Modest Recovery Expected in H2

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According to UBI Research’s recently published “3Q24 OLED Emitting Materials Market Track,” the purchase of emitting materials by Korean OLED panel manufacturers in the first half of 2024 totaled $495 million, representing 51.2% of the market share—a 7.8% decrease compared to the same period last year. This is a notable shift. Meanwhile, Chinese companies held 48.8% of the market share, up 7.8% year-on-year, with purchases amounting to $471 million.

As Chinese panel manufacturers ramp up shipments, the gap in the purchase of emitting materials between Korean and Chinese companies is steadily narrowing. In the first quarter of 2024, for the first time, Korean OLED panel companies’ share of emitting material purchases fell to 47.4%, lower than that of Chinese companies.

However, from the second quarter onward, with the increase in OLED panel shipments for IT devices and the production of panels for the iPhone 16 by Korean manufacturers, their share rebounded to 54.7%. While BOE passed the sample certification for the iPhone 16, the delay in mass production is expected to result in smaller shipments this year. Additionally, certification for the iPhone 16 Max, which was expected to be produced at BOE’s B12 factory, was not approved.

With the reduction in BOE’s iPhone shipments, Korean panel makers are likely to see an increase in panel shipments. Thanks to growing OLED panel orders from Apple for products like the iPhone and iPad Pro, Korean purchases of emitting materials are expected to rise to a 55.6% market share by the end of 2024, a notable increase compared to the first half of the year.

▶AMOLED Emitting Material Market Track Sample

OLED emitting material demand expected to grow to 177 tons by 2028

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According to the ‘2024 OLED Emitting Materials Report’ recently published by UBI Research, the total demand for emitting materials in 2024 is expected to be 131 tons, and the demand for emitting materials is expected to be 177 tons by 2028 with an average annual growth rate of 7.9%.

According to the report, as Samsung Electronics applied rigid OLED to its Galaxy A entry-level product, Samsung Display’s rigid OLED shipments, which were previously expected to decrease, increased. Additionally, as the application of OLED to IT devices, including iPad, expands, the demand for emitting materials is expected to increase until 2028.

The size of the OLED emitting materials market is also expected to increase. According to the report, the overall OLED emitting material market is expected to grow from $2.4 billion in 2024 to $2.7 billion in 2028.

Korean panel companies’ OLED emitting material purchases are expected to increase from $1.4 billion in 2024 to $1.5 billion in 2028, and Chinese panel companies’ material purchases are expected to increase from $980 million in 2024 to $1.21 billion in 2028.

‘The 2024 OLED Emitting Materials Report ‘ includes the latest trends in iPad Pro OLED, which recently started production, emitting material structure and supply chain, 8.6G IT line investment trend by panel company, tandem OLED emitting material development trend, and high-efficiency and long-life emitting material development trend, etc.

▶ 2024 OLED Emitting Materials Report Sample Download

In 2028, the OLED emitting material market is expected to reach $2.43 billion with an average annual growth rate of 5.8%

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According to the ‘4Q23_Quarterly OLED Emitting Material Market Tracker’ recently published by UBI Research, the market for emitting materials used in OLED is forecasted to grow from $1.84 billion in 2023 to $2.43 billion in 2028, with an average annual growth rate of 5.8%.

By country, Korean panel companies’ material purchases are expected to grow at an average annual growth rate of 4.2% from $1.11 billion in 2023 to $1.36 billion in 2028, and Chinese’ material purchases are expected to increase from $730 million in 2023 to $1.07 billion in 2028.

As forecasted, the material purchase ratio by country in 2028 will be 56% in Korea and 44% in China. However, Chinese panel companies are mainly mass producing panels for Chinese domestic use and white boxes, so even if panel shipments increase in the future, low-priced materials will be used. So, there is a possibility that the expansion of China’s emitting material market will be reduced further than currently expected.

Lastly, UBI Research predicted that Samsung Display’s purchase of emitting materials in 2028 will reach $810 million, LG Display’s will reach $550 million, and BOE will reach $440 million.

OLED emitting material market

OLED emitting material market

▶ 4Q23 OLED Emitting Material Market Track Sample Download

In 2027, OLED emitting material market is expected to grow 8.6% annually and is expected to reach US$2.75 billion

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According to the ‘4Q22 OLED Emitting Material Market Track’ recently published by UBI Research, global panel companies’ purchase of OLED emitting materials in the third quarter of 2022 amounted to US$4.96 billion. This is an increase of 20.9% compared to the previous quarter and 10.9% compared to the same quarter last year.

In the third quarter of 2022, Samsung Display’s rigid OLED shipment decreased to less than 20 million units, and the market for rigid OLED emitting materials decreased, but the supply of new panels by panel companies increased for iPhone 14 series. It was analyzed that the expansion of the use of materials with deuterium replacement technology and the rise in the exchange rate affected the increase in purchase amount.

UBI Research predicted that the overall emitting material market will grow from US$1.82 billion in 2022 to US$2.75 billion in 2027 with an average annual growth rate of 8.6%.

OLED emitting material market forecast

OLED emitting material market forecast

Yoon Dae-jeong, an analyst at UBI Research, said, “In the small OLED material market, Samsung Display’s shipments of rigid OLEDs will continue to decline, but foldable OLEDs will expand to 80 million units by 2027, and purchases of emitting materials are expected to be US$ 680 million by 2027. In addition, BOE and LG Display’s purchases of emitting materials are expected to be US$ 380 million and US$ 230 million, respectively, in 2027.” He added, “As shipments of LG Display’s WOLED and Samsung Display’s QD-OLED are expected to be in the mid-12 million and early 2 million units respectively in the large OLED material market in 2027, purchases of emitting materials are also expected to be US$4.2 billion and $13 billion, respectively.” In this report, RGB OLED is expected to account for the largest share with 69.1% by OLED deposition method in 2027, and WOLED is expected to account for 15.2%, RGB 2stack OLED 11.1%, and QD-OLED 4.6%.

▶ 4Q22 OLED Emitting Material Market Track Sample Download

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

2Q22 OLED Light-Emitting Material Market $4.12 billion, up 7.8% from the Same Quarter Last Year

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According to the “3Q22 OLED Emitting Material Market Track” published quarterly by UBI Research, purchases of OLED light-emitting materials in the second quarter of 2022 amounted to $4.12 billion.

In the second quarter of 2022, the OLED light-emitting material market decreased by 2.1% compared to the previous quarter and increased by 7.8% compared to the same quarter last year. Overall, there was a decrease in panel shipments of Samsung Display and LG Display due to the off-season, but sales did not decrease significantly from the previous quarter due to rising exchange rates and the supply of new materials.

In the small OLED panel market, Samsung Display’s second-quarter purchase of light-emitting materials fell 2.2 % from the previous quarter to $1.52 billion, BOE fell 11.7% to $53.1 million, and LG Display fell 12.6% from the previous quarter to $39.7 million.

For OLED TVs, LG Display’s second-quarter purchase of light-emitting materials was $77.3 million, similar to the previous quarter, while Samsung Display’s purchase of materials for TVs was $28.3 million, up slightly from the previous quarter.

2Q 2022 OLED Emitting Materials Market

2Q 2022 OLED Emitting Materials Market

Sales of OLED light-emitting materials for each quarter were classified by layer, and the expected sales until 2026 were expressed as a 100% cumulative graph.

Sales and the market share Forecast by OLED method

Sales and the market share Forecast by OLED method

The OLED light-emitting material market is predicted to be $1.81 billion in 2022 and $2.5 billion in 2026. As shipments of WRGB OLEDs are expected to exceed 20 million units in 2026, purchases of light-emitting materials for WRGB OLEDs are expected to reach $900 million in 2026 from $4.3 billion in 2022. As the RGB 2stack market for IT grows, it is expected to reach $53.4 million in 2024 and $190 million in 2026.

Sales of luminescent layer and common layer were investigated to identify the overall market of light-emitting materials, and performance was analyzed by dividing them into countries, panel companies, applied products, layers, and OLED methods (RGB, WRGB, and QD-OLED). In addition, OLED market information up to 2026 was predicted by predicting the usage and sales of light-emitting materials by each company over the next five years. The Market Track Quarterly Report provides necessary information to industry workers who lead OLED industries.

▶ 3Q22 OLED Emitting Material Market Track Sample Download

Material Science Co., Ltd. develops high-purity blue light-emitting material with a half width of 11 nm

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In OLEDs which are currently leading the display industry for mobile devices and TVs, blue material is still using fluorescent material unlike red and green.

Currently, a lot of light emitting material companies are trying to improve the efficiency, lifespan, and color purity of blue light emitting materials, also next-generation materials such as phosphorescence, TADF, and hyper-fluorescence as well as actively developing luminous efficiency by controlling emission wavelengths.

Material Science (hereinafter referred to as MS), a Korean company that has been developing blue light emitting materials since 2015, has recently focused on realizing high color purity and successfully developed high color purity blue light emitting materials with a light emission wavelength of 460 nm and a half width of 11 nm. Considering that the emission wavelength of the currently commercially available blue material is about 20 nm, the blue material of MS is expected to receive great attention.

The full width at half maximum (FWHM) is an expression of the extent of function given by the difference between the two extreme values of the independent variable at which the dependent variable is equal to half of its maximum value.

And the narrower the half width, the higher the purity.

A typical example is Samsung Electronics’ QLED TV, which has significantly improved color reproduction by applying a QD sheet to the LCD back light.

The blue light emitting material developed by MS is expected to be applicable not only to fluorescent materials but also to hyper-fluorescence, which is attracting attention as a next-generation blue material according to emission wavelength control.

<Comparison of the half width of the existing blue dopant with the half width of the blue dopant developed by MS, Source: Materials Science>

Deuterium substitution blue, will be next generation blue materials?

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Fluorescent blue emitting material is the only fluorescent material used in small and medium-sized OLEDs and large-area OLEDs.

Development of next generation emitting materials such as TADF and hyper-fluorescence is also in progress, but deuterium substitution technology has got attention since it is adopted to Samsung Galaxy S20.

Deuterium substitution technology is to replace hydrogen with deuterium in a compound combined with existing hydrogen, and each company has a difference in substituting the compound before or after synthesis or substituting the whole. Representative development companies for deuterium substitution include Idemitsu Kosan, DuPont, SFC, and JNC.

As related patents, compounds substituted with deuterium with an atomic mass of deuterium that is twice as high as hydrogen have lower zero-energy and lower vibrational energy than those combined with hydrogen, resulting in lower ground-state energy and weaker intermolecular interactions, resulting in a thin film in an amorphous state. It is effective in improving the life of OLED.

It is expected that the OLED device to which the deuterium-substituted compound is applied can improve the lifetime by more than 20% compared to the previous one.

Molecular Glasses Receives U.S. Patent 10,593,886 For Improved OLED Device Lifetime

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The U.S. Patent Office has awarded patent number U.S. 10,593,886 to Molecular Glasses, Inc. for “OLED Devices with Improved Lifetime Using Non-Crystallizable Molecular Glass Mixture Hosts”

<Improved OLED device lifetime using OLEDIQ™, Source: molecularglasses.com>

The present invention provides an OLED multilayer electroluminescent device that includes a cathode, an anode, a light-emitting layer (LEL) disposed there between, and charge-transporting layers disposed between (A) the cathode and the light-emitting layer, (B) the anode and the light-emitting layer, or (C) both (A) and (B). The light-emitting layer (LEL) includes a host material and an emitter. The host material includes a high-entropy non-crystallizable molecular glass mixture, which includes hole-transporting capabilities, electron-transporting capabilities, or ambipolar capabilities. The ambipolar capabilities include hole-transporting capabilities and electron-transporting capabilities.

According to Mike Molaire, Molecular Glasses’ CEO and Founder, “OLEDIQ™ materials are amorphous, soluble small molecules that are non-crystallizable, which prevents aggregation of dopant emitters. This means OLEDIQ™ produces significant improvements in OLED lifetime and high reliability. This is an ideal platform for high-efficiency, long-lasting blue OLED. OLEDIQ™ materials can be used for both the vacuum-thermal deposition production process, as well as inkjet printing without any modification”.

 

Canon enters OLED materials business

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Canon is considering the OLED materials business as the adoption of OLED panels such as smartphones and TVs is spreading. OLED panels are used in electronic finders in Canon’s mirrorless cameras.

Although no specific production date has been announced, the company will focus on research and development, group companies in Fukui Prefecture, and Fukui Canon.

Canon Tokki, the No. 1 OLED evaporator market share, is a subsidiary.

Canon is developing TADF luminescent materials as Cu-complex compounds. (Japanese Patent JP2011213643A)

[Press Release] Opening Ceremony of new Novaled Headquarters(Dresden, Germany, June 2019)

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Investment of 30 million Euros in Novaled Headquarters with state-of-the-art R & D center for OLED cutting-edge technology in Dresden, Germany

After 2 years of construction Novaled GmbH opened its new headquarters in Dresden on June, 12th together with long-standing business partners and supporters. Besides representatives of Samsung SDI, the Prime Minister of Saxony, Michael Kretschmer, and the First Mayor of the city of Dresden, Dirk Hilbert, participated in the event.

Core of the 10,200 m² premises in the northern part of the city is a 110 m long R & D center with chemistry laboratories as well as cleanrooms of class ISO5 and ISO7 equipped at highest standards. The new location is an improvement all along the line. Additional space in cleanrooms allowed for investments in cluster tools. This increased the OLED processing capacity by around 40%. The generously planned chemistry laboratories with state-of-the-art equipment and proprietary analytics are a true quantum leap in the development of new materials for high-performance OLEDs.

Novaled is currently the only supplier of organic dopants for OLED display mass production in the industry. Know-how and materials from Dresden enhance therefore most high end smartphones, TVs and smart watches, equipped with OLED displays.

“State-of-the-art cleanrooms, three times more lab space and entirely new facilities offer the best conditions for innovation,” said Novaled CEO Gerd Günther. The company started back in 2003 with five key patents concerning organic electronics. Meanwhile there are nearly 1,000 Novaled patents granted or pending. “Our technologies and materials are established as an industry standard in the OLED display field,” said Gerd Günther. “Novaleds revenues clearly show that we are growing even stronger than the market.”

In addition to the construction of a new technical center, the former mill of the army bakery was extensively renovated and Novaled employees get to work there in loft-like, bright offices. A green outdoor area offers an attractive environment for meetings and relaxation. During the opening ceremony, a birch tree was planted by Novaled CEO Gerd Günther, Samsung SDI Executive Vice President Dr. Hyuk Chang , the Prime Minister of Saxony, Michael Kretschmer and the First Mayor of Dresden, Dirk Hilbert and. “The birch is a known symbol for light and a new beginning, representing what we do in our new premises,” explained Gerd Günther.

About Novaled

Novaled GmbH is a leader in the research, development and commercialization of technologies and materials that enhance the performance of OLEDs (organic light-emitting diodes) and other organic electronics. Novaled offers OLED product manufacturers a unique combination of proprietary technology, materials and expertise, and is currently the only company in the OLED industry licensing and selling organic conductivity doping technology and materials for use in the commercial mass production of display products. Novaled has developed strategic partnerships with key OLED innovators and producers throughout the world and, with a broad portfolio of more than 980 patents granted or pending, has a strong IP position in OLED technologies, structures and materials. Novaled is headquartered in Dresden with some 135 staff and offices in Asia. Since end of 2013 Novaled belongs to Samsung. www.novaled.com

 

About OLEDs

OLEDs (organic light-emitting diodes) are solid-state devices composed of multiple thin layers of organic materials often only a few nanometers thick that emit diffuse light when electricity is applied to them. Because they are an area light source, OLEDs are a key part of fulfilling the dream of the rapidly growing flat panel display market: paper-thin, highly-efficient displays with brilliant colors and excellent design flexibility. OLEDs may also lead to innovative decorative lighting applications and personalized environments. www.novaled.com/oleds/

 

OLED emitting materials market to grow to $ 1.71 billion in 2019

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OLED light emitting materials market is gradually increasing as Chinese companies enter OLED panel market led by Samsung Display and LG Display.

The 2019 OLED emitting material report, published by UBI Research, predicts that the emitting material market in 2019 will reach $ 1.17 billion. 2021 and 2023 are expected to grow to $ 1.87 billion and $ 2.0 billion, respectively.

The size of light emitting materials consumed by Korean companies will account for 70.2% in 2019 ($ 0.82 billion), and its share will increase to 75.6% in 2023.

Korea’s emitting material market is growing because the consumption of OLED materials for TVs is soaring. In 2019, 21.1% of light emitting materials for TVs are expected to increase to 49.7% in 2023.

What is the cost of OLED materials for the Galaxy F?

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What will be the price of foldable phone Galaxy F, which is expected to be on the market this year, is a concern for people around the world. Samsung Display is the only company that can mass-produce Foldable OLEDs with in-folding type used by Galaxy F.

Galaxy F with 7.29-inch OLED is a digital convergence product that can simultaneously target the smartphone and tablet PC market. The initial sale price will be around $ 2,000, and the estimated sales volume is about 1 million units this year.

The OLED industry is interested in how much the Galaxy F’s foldable OLED panels (including modules) will cost.

According to UBI Research’s material cost analysis data, Samsung Display’s foldable OLED material cost is 2.04 times higher than the Galaxy S10 5.8 inch. This is because the display area has increased, and the yield has been reduced.

Galaxy F, Galaxy S10, and iPhone XS’s flexible OLED material cost analysis shows that the module cost of iPhone XS is the highest at 95.2%, Galaxy S10 at 92.2% and Galaxy F at 89.3%.

JOLED, Introduced Many Inkjet OLED Technologies

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This was the first time for JOLED to demonstrate its products and technologies at FINETECH Japan 2018.

JOLED, which received the inkjet OLED technology from Panasonic and is doing OLED panel business, has been selling medical monitors since early this year. Next year, Asus is also scheduled to sell inkjet OLED TVs made by JOLED.

Its exhibited products include medical OLED monitor, OLED monitor for games, automotive OLED and 3 kinds of OLED TVs.

JOLED’s Inkjet OLEDs have a peak intensity of 350 nit. In case of full white, it is 140 nits, but has sufficient brightness for monitor applications.

JOLED will build mass production lines next year to produce OLEDs for 20-inch monitors and TVs as a full-scale. It also plans to start OLED business for automobiles after 2020.

JOLED is the only company producing OLED panels manufactured by inkjet technology. JOLED is also promoting the license business by providing this technology to Chinese, Japanese and Taiwanese panel makers.

[ICEL 2018] TADF attracts attention as next generation emitting material

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In addition to monitors and virtual reality devices, OLED is gradually expanding its domain beyond smartphones and TVs, inclusive of the application of side-mirror OLED in automobiles. As new OLED applications are increased in various environments, it is essential to develop technologies to satisfy users.

In ICEL 2018, which is being held at Jeju International Convention Center from October 15th, many presenters and attendants emphasized that material development is essential to improve the performance of OLED as the OLED market grows more. As an alternative material, TADF (Thermally Activated Delayed Fluorescence) is mentioned.

First, Hwang Seok-Hwan, chief researcher in Samsung Display said that TADF is to be a good resolution as one of emitting materials for new deposition process, referring to the continued growth of OLED panel and material market.

Hwang said that the efficiency of fluorescent Blue is almost saturated, so 100% luminance efficiency can be obtained theoretically by applying TADF with the advantages of not using expensive rare earth metals. He added that improvement of material stability, improvement of color purity by using boron material, development of host having high triplet energy need to be superseded.

Also, CYNORA, a leading TADF developing company, disclosed the performance of dark blue TADF developed so far.

CYNORA said that the luminance efficiency and color purity of dark blue TADF reached the level that the related companies required, and that its current goal is to develop the technology to improve lifetime. In addition, based on this know-how, the company will quickly develop green and red TADF, and now green TADF has been delivered to several customers as a sample.

Merck confirmed that TADF is the most powerful luminescent material to replace fluorescent Blue at its presentation together with a poster about TADF.

OLED companies and research institutes are focusing attention on whether blue TADF can quickly enter OLED market and upgrade OLED performance further.

[ICEL 2018] What are the future challenges for LG Display to improve OLED TV performance?

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At ICEL 2018, held at Jeju International Convention Center from Oct. 15, Soo-Young Yoon, Vice President and Head of LG Display Laboratory, presented the challenges for the OLED TV performance improvement and price reduction

Yoon said “In 2018, the future prospects of OLED TVs have changed more positively compared to that in 2016. In 2013, only LG Electronics was an OLED TV set maker. The number of OLED TV set makers has steadily increased; ten in 2016, and fifteen in 2018. Many TV set makers are choosing OLED. ”

He added that although OLED TV is on the track of success with lots of improvement, it has to be further developed. The challenge is the improvement for high brightness, color reproduction rate and with the development of 8K resolution. Also he mentioned that the price reduction is to be necessary.

Yoon explained that the development of components such as driver IC and controller is an important task to develop 8K OLED TV. In order to improve the brightness, color reproducibility, and lifespan, TADF and phosphorescent Blue are to be good alternatives for improving the RGB emitting materials. The enhancement of out-coupling is also important.

In addition, he referred to the solution processed OLED as a technology, to compete against LCD TV price, with the necessity of developing inkjet equipment, process, and soluble materials. For this, it is required to develop the ink jet equipment and shorten the process time for mass production, but the performance and reliability of the soluble materials will be more important.
Finally, he commented that the company will focus on 8K OLED TV and rollable OLED TV with the improvement of brightness until 2020. After 2022, the company will develop the OLED TV which has an enhanced brightness of 300 nits or more, a color gamut that satisfies BT.2020, and a lifespan of more than 30,000 hours.

[IMID 2018] LG Display, showcased 2-stack RGB OLED for automobile OLED with improved life span.

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At IMID 2018 held in BEXCO, Busan on August 29, Kim Kwan-Soo, research fellow of LG Display presented about a new OLED technology for automotive displays.

Kim said that RGB OLEDs applied to mobile devices and WRGB OLEDs applied to TVs do not satisfy customers’ needs in terms of life span. To solve this issue, he introduced 2 stack RGB OLED in which RGB OLED has the same tandem structure as WRGB.

Because 2 stack RGB OLED can be thick due to adding a layer of CCL (charge generation layer) to the multi-layer structure, HTL is made thinner than before and the charge balance of the emitting layer is optimized.

As a result, the 2-stack RGB OLED shows 1.5 ~ 2 times higher emitting efficiency than the 1-stack RGB OLED. Its lifetime is increased by 4 times on T80 basis.

However, the 2-stack structure has a disadvantage in that it has higher power consumption than the general structure. Thus, it is necessary to make efforts to solve this disadvantage.