QD-OLED TV, is it to be the next generation premium TV?

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Samsung Electronics is currently occupying the premium TV market with QD-LCD TVs, which use ‘PL-QD (photoluminescence quantum dot) technology’. This technology has a mechanism in which the material stimulated by external light re-emits light.

The operating profit of the consumer electronics division (CE), which controls QD-LCD TVs, fell more than Korean won 1 trillion in last year and the operating profit ratio was only 3.6%.

On the other hand, LG Electronics’ HE business division achieved a record operating profit of Korean won 1,566.7 billion and an operating margin of 8.1% through OLED TV. Sony also turned its operating profit into a surplus by quickly taking over the premium TV market with OLED TV.

OLED TV has had a positive effect in driving corporate sales growth.

Samsung Electronics has been developing EL-QLED, with EL-QD (electroluminescence quantum dot) technology, to increase its market share in the premium TV market. However, efficacy, lifetime and mass production technology of quantum dot, which is the material of QLED, is not yet secured.

Recently, QD-OLED TV technology, which uses blue OLED as a light source and that implements red and green colors through a quantum dot color filter (QDCF), is attracting attention.

<Expected structure for QD-OLED, Source: Samsung Display Blog>

By using QDCF, it is possible to easily make desired colors by adjusting the size of the QD material and improve the color reproduction rate. This is because the color gamut is enlarged to BT2020, so it is close to natural color and it is possible to deliver vivid picture quality more clearly. In addition, QD-OLED TV has a top emission structure, which makes it easy to secure the aperture ratio, thereby improving resolution and screen uniformity.

However, in QD-OLED TV, there are various problems to be solved such as lifetime and efficiency of blue OLED, and technology of ink-jet printing process. Given that the industry is still in the early stages of reviewing the business possibility, QD-OLED TVs are expected to go into mass production after 2020.

Attention is focused on the QD-OLED TV’s entry into the premium TV market and its impact.

OLED lighting for automotive rear lamps, market will be opened in earnest?

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OLED lighting applied to automotive rear lamps was introduced again.

At Light + Building 2018 in Frankfurt, Germany held from March 18 to March 23, 2018, LG Display exhibited the rear lamp to be applied to Mercedes-Benz S-class coupe. The OLED rear lamp, which was first shown at the Frankfurt Motor Show last October, is made up of 33 rigid OLED panels and a combination with LED.

<Mercedes-Benz S-class coupe’s OLED rear lamp introduced by LG Display>

The LG Display official expressed expectations for the OLED tail lights saying that “Rigid OLED lighting panel for rear lamps can meet all the requirements of the automobile manufacturers, including 15 years of life time and temperature testing of -40 to 80 degrees Celsius.” ”Since OLED allows greater design freedom and flexibility which other lights cannot follow, the OLED market for automotive rear lamps will grow significantly if the requirements of automakers are satisfied, by OLED panels inclusive of flexible OLED panels.”

Mercedes-Benz S-class coupe with OLED rear lamp is expected to be released in the first half of this year, and about 20,000 units will be produced in a limited series.

According to UBI Research, the market for OLED lighting for automobiles will grow at a CAGR of 81.1% percent from 2018 to 2023 to reach over 67 million units in 2023.

<Shipment forecast for OLED lighting panels for Automotive>

Meanwhile, LG Display received great attention from visitors at the Light + Building 2018 exhibition, by showcasing the rear lamp proto type with flexible OLED lighting panel, OLED lighting applied with crystal sound for the first time in the world, and various design lights using flexible OLED lighting panels.

<LG Display’s rear lamp proto type applied with flexible OLED lighting panel>

10 OLED related companies in Germany established ‘OLED Licht Forum’

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10 OLED-related companies and research institutes in Germany announced the founding of the ‘OLED Licht Forum’ at Light & Building 2018, the world’s largest lighting and architecture exhibition in Frankfurt, Germany, on 19 March. The ‘OLED Licht Forum’ is established by ten German companies, including: OLEDWorks, OSRAM, Merck, BASF Coatings, EMDE, Fraunhofer, Hema electronic, Irlbacher, APEVA and Walo-TL to develop and promote OLED lighting technology.

The companies that make up this alliance plan to develop new applications of OLED lighting by sharing their expertise on OLED technology in areas such as research and development, supply chain, and OLED lighting panel manufacturing.

The Forum aims to develop and utilize OLEDs as future lighting solutions through exchange of experiences, conferences, lectures and visits to institutions, thereby providing a broad base for utilizing OLED lighting. As the first part of these activities, it will open an OLED showroom for people to experience OLED lighting directly.

“This non-profit alliance aims to leverage their expertise to further develop OLED as a sustainable light source for a variety of applications.” said Michael Grund, Head of OLED & Quantum Materials for the Performance Materials business sector of Merck. The alliance is also dedicated to fostering community within the greater lighting industry by facilitating the exchange of experience and know-how.

Google-LG Display to show OLED for 1443ppi VR device for the first time in the world

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Google and LG Display are planned to unveil OLED displays for ultra-high-resolution VR devices with the world’s first 1443 ppi at SID 2018 in Los Angeles in May.

<OLED for VR devices, which Google and LG Display will unveil, Source: Android Police>

According to the Verge, the OLED for VR devices released at SID 2018 has a resolution of 5657 x 3182 (1443 ppi) with 4.3 inches in size.

The resolution is 2.4 times higher than Samsung Electronics’ Odyssey (model no. XQ800ZAA-HC1KR), which is currently known to have the highest resolution of 1400 x 1600 (607ppi), among VR devices supporting HMD. Also, it is about 1.9 times higher than the OLED for VR devices (1824 x 1824, 806 ppi) displayed at iMiD 2017 in August, 2017.

Since the distance between the eyes and the display is very short, a VR device has a ‘side door effect’ phenomenon in which the pixel patterns of the display are shown in a lattice form when the resolution is low. In addition, low resolution increases the fatigue of eyes, and it becomes a factor that deteriorates reality due to inaccurate graphic information (image distortion). Accordingly, the related companies are developing panels for VR devices with high resolution that can compensate them.

<VR screen comparison according to resolution, Source: speedvr.co.uk>

OLEDs for VR devices to be exhibited by Google and LG Display are the best in the world at the refresh rate (120Hz), too.

Higher refresh rates can display more screen frames within the same time period to minimize the nausea phenomenon and increase immersion by showing more natural images. Accordingly, Oculus VR, HTC, and Korea Information and Communications Technology Association have prescribed the refresh rate of the VR display as 90 Hz or more, and SONY defined as 120 Hz.

According to the ‘Display Market Report for AR and VR’ published by UBI Research in July 2017, the VR devices launched from 2014 to 2016 have a refresh rate of about 65 Hz for LCDs and about 86 Hz for OLEDs. In order to implement a high refresh rate, OLEDs with higher response speeds and lower power consumption than LCDs are more advantageous.

Next-generation emitting materials, development is under way

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At the 4th OLED KOREA CONFERENCE, Kyulux and CYNORA, the leaders in the development of next generation emitting materials, announced the results of research and future development directions.

Junji Adachi, CEO of Kyulux, said, “We are developing Hyperfluorescence in the form of adding a TADF dopant to the existing fluorescent host and dopant.” He also emphasized that the emission FWHM (full width at half maximum) of Hyperfluorescence is about 35% of that of TADF, and the luminance is about twice as high, and this material can solve the drawbacks of TADF (wide FWHM and low luminance) at the same time.

The latest Hyperfluorescence, which Jundi Arachi introduced, has efficiencies of red 28 cd /A, yellow 43 cd/A, green 81 cd / A, and life span is 10,000 hours, 62,000 hours, and 48,000 hours based on LT50 (1000nit) respectively. The color coordinates are red (0.64, 0.36), yellow (0.46, 0.52), and green (0.28, 0.65).

Andreas Haldi, CYNORA’s Chief Marketing Officer of CYNORA, said that the blue TADF emitter developed by CYNORA now has a color coordinate of 0.16, EQE of 24% and 10-hour lifetime (LT97 @ 700nit).

The performance is more than twice as efficient as the blue material currently used in OLEDs, and the color coordinates (0.10) are similar but the lifespan is short. He added that the Blue TADF emitter is scheduled to be developed within 2018 and will be available for mass production in 2019.

He also mentioned that the manufacturing cost is reduced and the power consumption is reduced, thereby minimizing battery consumption if blue TADF emitters with high efficiency are used instead of conventional low-efficiency blue materials. At the same time, it is expected to be able to improve the resolution of OLEDs and be applied to large-scale vacuum processing lines of major panel makers.
According to CYNORA, next step is to develop green TADF emitters (2019) and red emitters (2020) after finishing the development of blue TADF emitters (2018). Thus, it might be completed ‘RGB TADF emitter development’ by 2020.

OLED display to embroider the blue sky and stars inside the plane

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“OLEDs will be installed on the ceilings and walls of planes to provide customers with a variety of images. It is expected that stars will shine in the ceiling at night and clear blue skies during the day time inside the future airplane.”

Dr. Julian Chang, associate tech fellow of Boeing, presented various advantages of OLED to be applied to the inside of planes in future at the ‘2018 OLED Korea conference’ hosted by UBI Research on March 7~8.

Explaining “OLEDs are capable of full black implementation and excellent color reproduction”, Dr. Julian said that “We can provide customers with realistic blue skies and night skies.” “The planes have a lot of curved surfaces, so easy-to-implement OLEDs have advantages over other displays.”

He also emphasized the advantages of OLED which are helpful to provide information, without limit of viewing angle, to customers and crews who need a lot of information in a narrow space, reduce the blue light that interferes with sleeping, and reduce fuel consumption and carbon dioxide with lower power consumption than LED.
On the other hand, he commented that it is necessary to improve the maximum luminance, reduce the burn-in phenomenon, satisfy FAA regulations, and facilitate easy installation and repair in order for OLED to enter the airplane industry.
Today, OLEDs are expanding beyond mobile devices and premium TVs into automotive and wearable markets. Attention is growing whether customers are given a new experience to taste the realistic sky as OLED is applied to the interior of the plane.

OLED TV continuing to evolve

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At the ‘4th 2018 OLED Korea Conference’ hosted by UBI research on March 7-8, Dr. Han Chang-Wook, Chief Research Fellow of LG Display, made a presentation for the development process of OLED TVs and emphasized the image quality of OLED, design flexibility and expandability.

At first, Dr. Han introduced three core technologies including TFT technology, OLED stack technology, and compensation circuit design applied to OLED TVs. He said, “We changed the TFT as top gate coplanar structure for UHD implementation in bottom gate TFT applied to FHD.” He also mentioned “We changed the WRGB OLED pixel structure from 2 stack structure to 3 stack structure to improve the luminance and color reproduction ratio, and designed the compensation circuit so that it does not affect the OLED even on 8K large screen.”

He commented, “Unlike LCDs that control pixels with local dimming, OLEDs have pixel dimming controls, which allows for full black representation and less halo effects”

Explaining that OLED allows greater design flexibility and expandability because of the self-illuminating properties that does not require backlight, he referred to the mirror display and transparent display applicable to indoors, and the world’s first 88 inch 8K OLED TV and 65 inch rollable OLED TV exhibited at CES 2018.

Dr. Han said “We expect large OLED panel production to be tripled, compared to 2016, with the expansion of production lines and yield improvement in 2018. In addition, the company will be able to ship over 6 million large area OLED panels by 2020 through the expansion of its Paju and Guangzhou plants.” He also announced that the company will increase continuously the production for OLED panels, which were 5% of the total display panels in 2016, by 40% by 2020.

Inkjet might take advantageous position for Gen11 super large OLED mass production line!

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Toshiaki Arai, chief technologist of JOLED and James Lee, deputy chief engineer of TCL made presentations for the solution processed OLED on March 7 at the ‘4th OLED Korea conference’ held at Novotel Ambassador Hotel in Gangnam, Seoul, hosted by UBI Research.

Toshiaki Arai, chief technologist of JOLED announced that JOLED will focus on the medium-size OLED market for 10 ~ 30 inch tablets with solution processed OLED. He explained “OLEDs for mobile devices are currently targeting over 500 ppi and at least 800 ppi, which is hard for today’s printing technology. However, current printing technology is competitive enough since the medium-size OLED for tablets is 300 ppi level”.

He also added, “While it is required to divide the mother glass with the deposition technology currently in use, JOLED’s oxide TFT and solution process OLED can be adopted to Gen 8.5 as well as Gen 11 without cutting the mother glass. Thus, we expect panel production to be increased significantly.

James Lee, deputy chief engineer of TCL commented that the next-generation premium TVs are to implement 70-inch or larger screen, full black representation, high-definition at 8K resolution, and design differentiation such as slim & flexible. He said “solution process technology enables large RGB OLED implementation, which can improve image quality and reduce cost by using less material. TCL is currently developing solution process technology, which might be expected to be applied to its planned Gen 11 factory. ”

He commented “OLED TV prices are now approaching the price of LCD TVs based on 65-inch standards. In 2021, OLED TVs and LCD TVs will not differ in price, and OLED TVs will become the mainstream of the premium TV market. ”

2018 MWC- Release of LG Electronics’ V30S model, postponing announcement of new smart phone

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LG Electronics released some of its stance, through 2018 MWC, on upgrading the entire mobile lineup, which led to lots of curiosities by the various related articles.

According to the exhibitors, the company will try various strategies from this year and will not necessarily follow its competitors in launching new models. In terms of the overall model reorganization of the G series and the V series, it has decided to concentrate on the essence of the phone for the time being rather than making a big change. With regard to the V30S’s release, it is said that V30S is different from V30 in terms of taking bright and clear pictures in the dark place by improving the illumination including AI application to the camera modules, and the enhancement of the stereo system. Also, V30 users might be able to experience soon the same performance as V30S through software upgrade.

Though it was not revealed at this MWC exhibition, the new premium mobile model to be launched this year will adopt the ‘ ThinQ AI’. It was announced that the new model was released after the V30 in a separate private booth; however, the release time has not yet been confirmed.

Regarding 5G, which is one of the biggest trends in this exhibition, North America and other regions are rapidly moving, and LG Electronics has also been working hard on this inclusive of the development of foldable smart phone.

Unlike last year’s show with various watch models, LG Electronics’ MWC booth is a little reduced as it seems to prepare for the next. The V30S is the only OLED display product, and most of the exhibits highlighted the enhanced performances of the V30S, such as the experience of a Hi-Fi QUAD stereo system through wearing a headset and the experience of a camera’s Bright Mode in the darkroom. In addition, the K10 (K10, K10 + – 5.3 inch HD) series, which are entry level models, has been released through this exhibition.

Leading the OLED market of Samsung Display continues this year

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According to OLED Market Track, which was published by UBI Research in the first quarter of 2018, AMOLED sales and shipments amounted to US$ 8.86 billion and 130 million units, respectively, in the fourth quarter of 2017. The sales amount is 100.2% higher than the fourth quarter of 2016. Among them, Samsung Display’s sales and shipments account for 91.6% and 94.5%, respectively, and keep its absolute position.

In the fourth quarter of 2017, the total number of AMOLED market for smart phones was 120 million units, representing 95.5% of the total market. AMOLED panels for smart phones sold by Samsung Display accounted for 97.5%, with 119 million units.

In 2018, the AMOLED market for smart phones is expected to reach 470 million units, with Samsung Display expecting its market share to maintain over 91.5 % with 430 million units.

<4Q’17 AMOLED market>

<2018 AMOLED market for smartphone>