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[IFA2016]サムスン電子、有機ELテレビと完全決別を宣言！

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2014年の「CES2014」において「有機ELテレビはまだ技術が不十分で、さらに3年程度の開発期間が必要とされる」と言及してから2年半が過ぎ、「IFA2016」でサムスン電子は有機ELテレビ事業を展開しないと強くアピールした。
最近サムスン電子は、韓国マスコミとのインタビューで「有機ELテレビはまだ画質に問題が多く、サムスン電子は数年内にQLED（quantum-dot light-emitting diode：量子ドット発光ダイオード）テレビでテレビ事業を継続する」ことを明らかにした。
「IFA2016」でテレビの過去と現在、そして未来がどのようになるかについてサムスン電子の内情を明かした。

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サムスン電子のブースで公開されたデータによると、「過去の液晶テレビは現在LEDテレビに引き継がれており、未来には無機材料が使われる量子ドットテレビに進化する」とのこと。さらに、テレビ市場から消えたプラズマテレビと同様に有機ELテレビも湾曲フルHDテレビ程度で消えるということを表した。
この資料からするとサムスン電子は、他の液晶テレビセットメーカーは気にせず、ただLGエレクトロニクスの有機ELテレビにだけ全ての焦点を合わせているように分析される。
実際にテレビ市場でシェア首位の座にあるサムスン電子としては、プレミアムテレビ市場で勢力を拡張しているLGエレクトロニクスの有機ELテレビが目障りで仕方ないはずだ。しかし、55型・65型のUHD有機ELテレビが売れている現在としては、サムスン電子の展示内容は度が過ぎたような気がする。
ライバルに対するネガティブな攻勢はマーケティングとして許されることもあるが、今回の展示では度が過ぎた。挙句の果てにサムスン電子は、まだ存在もしない無機ELテレビ（量子ドットテレビ)と有機ELテレビの耐久性を充実に比較展示することまでした。
有機ELテレビは時間の経過とともに色が酷く変化するが、無機ELテレビは色変化がほとんどないという内容だ。

160905_2

米国「コンシューマレポート」のサイトには下記の内容がまだ公開されている。2015年の「ベストテレビ5」にLGエレクトロニクスの有機ELテレビが3種含まれ、1位は65型のUHD有機ELテレビとなっている。
有機ELテレビの終末がサムスン電子の思うように早く訪れることはないようだ。有機ELテレビの時代は今から始まる。

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“삼성 QLED TV 출시, 향후 5년간 쉽지 않을 것”

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Source = Samsung Elec.

QLED TV 양산이 향후 5년간 쉽지 않을 것이란 전망이 나왔다. (Source = Samsung Elec.)

강현주 / jjoo@olednet.com
삼성전자의 양자점발광다이오드( QLED ) TV 출시가 향후 5년간 쉽지 않을 것이란 전망이 증권가에서 나왔다.
하이투자증권 정원석 애널리스트는 20일 “퀀텀닷 물질을 발광원으로 사용하기에는 화소 증착, 퀀텀닷 효율 개선, 균일성등 아직 풀어야 할 기술적 난제가 많아 현실적으로 향후 5년 내 출시가 쉽지 않아 보인다”며 “오히려 삼성전자는 기존의 퀀텀닷 TV 전략을 더욱 확대할 가능성이 높다”고 내다봤다.
최근 삼성전자가 QLED TV로 방향을 잡았다는 기사가 보도되자 삼성전자에 퀀텀닷용 배리어 필름을 납품하고 있는 아이컴포넌트 주가가 급락했다며 “QLED TV에 대한 과도한 우려를 거두자”고 제안했다.
올해 삼성전자의 퀀텀닷 TV 출하량은 전년 대비 약 3~4배 증가한 350만대가량을 기록할 것으로 예상돼 삼성전자 퀀텀닷 TV에 전량 채택되고 있는 퀀텀닷용 배리어 필름 수요도 가파른 증가세를 나타낼 것이라는 게 그의 설명이다. 정 애널리스트는 올 하반기에 신제품 출시·계절적 수요 증가와 함께 퀀텀닷용 배리어 필름 출하가 더 확대될 것으로 보고 있다.
정 애널리스트는 “중장기적으로 플렉서블 OLED 시장의 가파른 성장으로 플렉서블 OLED 봉지용 배리어 필름 수요도 증가할 것”이라며 “특히 LG디스플레이는 올해 연말부터 중국 업체인 샤오미와 화웨이에 엣지 OLED 공급이 예상돼 아이컴포넌트 실적 개선에 긍정적 영향을 미칠 것으로 판단된다”고 했다.

삼성, 뉴욕 마케팅 센터에 2세대 퀀텀닷 SUHD TV 등 출시

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삼성전자가 뉴욕 마케팅 센터에 2세대 퀀텀닷TV 등을 출시했다.(출처=삼성전자)

삼성전자가 뉴욕 마케팅 센터에 2세대 퀀텀닷 SUHD TV 등을 출시했다.(출처=삼성전자)

강현주 기자 / jjoo@olednet.com

삼성전자가 미국 뉴욕에 위치한 ‘삼성 뉴욕 마케팅센터’에 2세대 퀀텀닷 SUHD TV를 비롯한 홈엔터테인먼트 제품을 대거 출시, 북미 시장 공략에 나섰다고 14일 발표했다.

삼성전자는 올해 신제품 SUHD TV 전 라인업 뿐 아니라 UHD 블루레이 플레이어, 돌비 ‘애트모스’ 기술을 탑재한 사운드 바 등 홈 엔터테인먼트 신제품들을 출시했다.

삼성전자는 행사장을 거실, 침실, 서재 등 집안 곳곳의 생활 공간으로 꾸며 SUHD TV의 화질, 쉬워진 삼성 스마트TV 사용자경험(UX)을 마치 집에서 사용하는 것처럼 체험해 볼 수 있도록 구성했다.

올해 SUHD TV 신제품은 지난해보다 진화된 2세대 퀀텀닷 기술로 색상 표현이 25% 더 정확해져 자연색 그대로 표현하고, 전 제품에 1000니트(nit) 밝기의 HDR(High Dynamic Range)이 적용됐다.

TV 리모컨 하나로 TV와 TV에 연결된 케이블TV, IPTV, 인터넷 기반 동영상 서비스 등의 셋톱박스, 홈시어터, 블루레이 플레이어, 게임 콘솔 등 다양한 주변 기기들을 간편하게 제어하는 사용자경험(UX)이 참석자들의 큰 호응을 얻었다는 게 삼성전자의 설명이다.

터널 모양의 벽과 천정에서는 삼성전자가 세계 TV 시장 1위에 오르기까지 거쳐온 노력의 역사를 보여주는 영상으로 채웠다.

삼성전자는 2세대 퀀텀닷 디스플레이 SUHD TV를 북미시장에 성공적으로 출시해 11년 연속 세계 TV 시장 1위 수성의 초석을 다진다는 계획이다.

시장조사기관 NPD에 따르면, 삼성전자는 지난해 북미 평판 TV시장에서 금액 기준 37%의 점유율로 역대 최고 실적을 기록했다. 또한 지난해 북미 UHD TV시장에서는 52.7%의 압도적인 시장점유율로 1위를 차지했다.

삼성전자 미국법인 데이브 다스 상무는 “퀀텀닷 디스플레이가 선사하는 최고의 화질로 소비자들에게 TV의 새로운 가치를 제시하고 미국 TV시장을 선도해 나가겠다”며, “미국 소비자들에게 계속해서 사랑 받는 프리미엄 TV 브랜드가 되기 위해 노력할 것”이라고 말했다.

 

Why is ‘Cadmium-free’ Significant? Samsung’s Quantum Dot SUHD TV

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Hyunjoo Kang / jjoo@olednet.com

<Samsung Elec. Released 2nd Generation Quantum Dot TV. Source: Samsung Elec.>

On the subject of Samsung Electronics’ 2nd generation quantum dot display equipped SUHD TV product, recently released in Korea, display experts consider the actualization of 1,000 nit without cadmium as the key strength.

 

In 2015, Samsung Elec. first launched quantum dot SUHD TV under the name nanocrystal technology. Each quantum dot of nanosize, 10,000 times narrower than a human hair, actualizes accurate color.

 

According to Samsung Elec., the 2nd generation quantum dot technology to produce this new product, an improvement over last year’s. The company emphasized that compared to the previous product, the price was reduced and brightness was improved. HDR (high dynamic range) with 1,000 nit maximum was applied to the new product.

 

The 1,000 nit brightness is the standard figure of premium image produced in Hollywood, US. If this figure is high, screen’s bright and dark areas can be experienced fully even in bright environment such as a living room area.

 

Although not applied to all models of Samsung’s 1st generation quantum dot SUHD TV, 1,000 nit brightness was applied to the majority of the models; that 1,000 nit brightness was applied to the new product is not worth much attention by itself.

 

<Samsung Elec.’s 1st Generation Quantum Dot TV vs. Other Display in CES 2015>

 

◆Hazardous Heavy Metal Cadmium, Why Difficult to Remove?

 

Quantum dot film includes cadmium. As cadmium is a hazardous heavy metal, cadmium including quantum dot film cannot be environmentally friendly. Cadmium use in Europe is limited.

 

However, without cadmium, the quantum dot film’s optical efficiency is reduced. In order to make up for this, LED chips have to be applied which increases the price as well as the energy consumption. An alternative method to avoid this is development of additional quantum dot materials that increase efficiency.

 

For these reasons, some Chinese companies that produce quantum dot display equipped products select to use cadmium, overlooking the environmental issues. Samsung Elec. also emphasized that it is the only company that utilizes environmentally friendly cadmium-free quantum dot materials.

 

Through quantum dot materials’ efficiency and color mapping algorithm improvement, Samsung actualized 1,000 nit brightness without resorting to cadmium and without increase in power consumption. Color accuracy, which is a quantum dot display trait, was also improved by 25%.

 

Samsung Elec. is planning to release 14 models of SUHD TV, from 49 inch to 88 inch, in Korea. This is over 30% increase compared to last year. The price also was reduced by 900,000 KRW compared to the previous version. The new products, depending on the specifications, cost around 6 million KRW for 65 inch, and 4 million KRW for 55 inch.

A comment from a display expert is, “the new product has 1,000 nit brightness is not significant by itself, and color accuracy improvement also is not of much attention as it is an existing quantum dot trait”. However, he also put another comment from his analysis, “1,000 nit brightness was actualized without using cadmium and without decreasing energy efficiency is worth noting”.

Quantum Dot, Will it Rise to Become the Answer for Future Display Materials?

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The interest in quantum dot materials is increasing daily. In July 2015, Professor Changhee Lee of Seoul National University received Science Technology Person of the Month prize with technology that greatly improves QLED performance and lifetime. In CES 2016, with cadmium-less quantum dot applied SUHD TV, Samsung Electronics achieved UHD TV’s color standard BT.2020 and received much attention.

 

Regarding this interest, during the Pioneer Technology Seminar to Overcome Display Industry Crisis (January 14) held in South Korea, University of Seoul’s Professor Jeong Hoon Kwak reported that quantum dot technology is a material with plenty of potential from the long-term perspective.

 

Quantum dot materials can be used with blue LED to improve LCD color gamut. Two techniques are generally used; the edge type has quantum dot placed on the sides and for surface type the quantum dot film is attached in front of BLU. Most of TV makers, excluding Sony, are using surface type. Professor Kwak explained that quantum dot can achieve desired color by adjusting the size of the particles without changing the materials. Through this, he estimated that it could replace color filter.

 

As well as increasing the LCD color gamut, as quantum dot materials emit light when connected to electricity, much like organic light emitting materials, it is anticipated that they could be used to replace the emitting materials in OLED panel. Within the industry, this technology is called QLED or QD-LED (Quantum Dot Light Emitting Diode) technology. Professor Kwak emphasized that QLED has better color gamut than OLED and has a merit of good actualization of deep blue. As QLED is basically formed through solution process, he added that solution process pixel patterning technology has to be development and device lifetime also has to increase.

 

Professor Kwak explained that as there are not many places mass producing QLED materials at present, the cost is high. However, he emphasized that because the quantum dot materials have an advantage of being easy to synthesize, from long term perspective, they can be used at lower price than OLED.

 

퀀텀닷

Now is the Time to Invest for OLED to be the Next Generation Display

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By Hyun Jun Jang

 

이창희

 

 

On December 10, a seminar specializing company bizocean held ‘2016 Next Generation Display’s Latest Trend and Cutting Edge Industry Application Issues and Business Creation Seminar’ in Korea Technology Center. Professor Changhee Lee of Seoul National University, the first speaker of the seminar, announced that as OLED will become the technology for future display, now is the time for investment by the companies.

 

Lee reported that the display follows camera’s resolution, and although resolution has been developed up to UHD, he forecast that it will advance further. He also added that higher the resolution, the display performance that consumers demand will increase.

 

Regarding the current display market status, Lee explained that as the LCD’s margin is falling the market has to turn to OLED, but it is still expensive and capacity is low. Additionally, from the way consumers are still using the term liquid crystal regarding Samsung’s AMOLED smartphone, Lee speculated that people have difficulty in distinguishing between LCD and OLED. He told the audience that the industry should inform the public of the OLED’s differences from LCD through transparent, flexible displays that show OLED’s superior traits, and open the market through product differentiation strategy.

 

For the future display, Lee pointed out printing OLED. He explained that although printing OLED’s lifetime, particularly blue’s, falls short compared to vacuum evaporation, it is estimated to reach commercialization stage after 2-3 years. Despite the flaws in terms of materials, Lee reported that the advantages such as reduced production cost, fast tact time, and material usage efficiency will lead to the opening of the market. For these reasons, Samsung and LG are carrying out development.

 

Lee forecast that LCD, in its maturity stage of the industry life cycle, will lead the market for a while, but OLED technology will rapidly evolve and become the focus of the next generation display market. Regarding OLED TV, Lee mentioned that large area OLED mass production through printing technology is urgent in order to achieve price competitiveness. At present, OLED’s capacity is less than 1/100 of LCD. As such, even if there is demand, supply may not be able to meet it and Lee suggested the need for investment to the companies. He added that if there is low supply when the number of customers is high, the opening of the market could be delayed.

 

이창희2

Display Market Forecast Source: Professor Changhee Lee Presentation Material

 

Lee mentioned QLED as another future display technology. QLED has the same structure as OLED but uses quantum dot as the emitting materials, changing colors through different sizes. Lee reported that the color gamut is high as the wavelengths are shorter than OLED emitting materials. Also as the same material is used, QLED has an advantage of reduced material production cost and development of micro display with 2,000 ppi is complete. However, Lee added that as the lifetime is nowhere near sufficient, commercialization stage is still far away.

[LED/OLED EXPO 2015] Low Cost OLED Lighting Panel Production, QD Film Provides the Solution?

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One of the reasons that OLED lighting is not becoming commercialized, despite its diverse advantages compared to other lightings, is its high price. The most fundamental way to reduce OLED lighting panel cost is investment in OLED lighting panel mass production line. Price reduction for components and materials is also an important factor.

 

The OLED lighting panel that is currently being mass produced has red/green/blue or yellow/blue stack structure. Also the use of tandem structure of more than 2 stacks to increase efficiency makes the process complex, lowers the yield, and increases the amount of materials used, and is becoming a key factor in increasing the production cost.

 

At LED/OLED Expo 2015, Cheorwon Plasma Research Institute (CPRI) displayed technology that produces white by applying light extracting film that contains red and green quantum dot (QD) material on blue OLED. CPRI forecasts that this technology of QD film applied blue OLED will be the solution for lowering OLED lighting panel production cost.

 

CPRI’s senior researcher Yong Hwan Yoo explained, “When QD light extracting film is applied to blue OLED, the evaporation processes are reduced compared to existing RGB or YB tandem structure OLED lighting. This could lead to production cost reduction as the yield increases and material cost decreases. If the QD purity improves, as well as blue material’s lifetime and efficiency, it is anticipated that the efficacy will match that of RGB or YB tandem OLED lighting panel.”

 

CPRI exhibited LED caps to be used for mascots at the opening/closing ceremonies of PyeongChang 2018 Winter Olympics, ultimately aiming for manufacturing them using OLED lighting panel instead of LED.

 

 

Seoul National University’s Research Team Lead by Professor Changhee Lee Succeed in Developing High Output QLED Emitting True Ultraviolet Light

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South Korean research team lead by Professor Changhee Lee in Seoul University succeeded in making first quantum dots that emit ultraviolet light and used them to produce a flexible, light-emitting diode.

UV light is usually produced by mercury lamps or LEDs made from inorganic materials such as gallium nitride (GaN). However, mercury lamps tend to emit a wide range of visible wavelengths as well as UV, and high-performance gallium nitride LEDs are expensive to make. According to Professor Lee, quantum dots are an attractive alternative which can be made using potentially less expensive solution-based processes.

Quantum dots, made out of a semiconductor material, emits different wavelengths depending on the size and shapes. The smaller the crystal, the shorter the wavelength of the light it emits. The Professor Lee’s team is the first in succeeding in making quantum dots that emit wavelengths shorter than about 400 nm, the high end of the UV spectrum.

In order to produce UV nanocrystals, the team had to figure out how to make quantum dots with light-emitting cores smaller than 3 nm in diameter. To make these, the team utilized cadmium zinc sulfide, which emits high-frequency light, zinc sulfide shell. The quantum dots produced through this method emit true UV radiation at about 377 nm. Professor Lee explained that they “can go to much shorter wavelengths than people generally expected from quantum dots”.

The research group then made a flexible LED with the quantum dots, using a design for a high-efficiency device they developed in 2012. Professor Lee’s team showed that the UV LED could illuminate an anticounterfeiting mark in a bill of paper currency. Franky So, a materials scientist at the University of Florida, says making a device out of the quantum dots that shines brightly enough to reveal the currency mark is a remarkable accomplishment. If their lifetimes can be improved, these potentially low-cost UV LEDs could find uses in counterfeit currency detection, water sterilization, and industrial applications.

The research team headed by Professor Lee includes Seoul National University, Professor Seonghoon Lee and Professor Koonheon Char, and Dong-a University’s Professor Jeonghun Kwak. The research was published in Nano Letters (Nano Lett. 2015, DOI: 10.1021/acs.nanolett.5b00392), a monthly peer-reviewed scientific journal, and reported on Chemistry & Engineering (27 May), published by the American Chemical Society.11

Prof. Changhee Lee of Seoul National University, ‘Anticipate QLED’s Future’

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Professor Changhee Lee of Seoul National University discussed QLED’s future in the 1st OLED KOREA Conference (April 2), organized by UBI Research.

 

QLED is a display that replaced emitting layer’s host and dopant to quantum dot (QD) whilst continuing to use existing OLED’s common layer, and can be formed via solution process. It can be mistaken as similar concept with recently released quantum dot products. However, these are devices that have quantum dot film attached to LCD and therefore fundamentally different from QLED which has basis on OLED.

 

Of the OLED panel cost, the expensive OLED key emitting layer materials, host and dopant, take up a high percentage. On the other hand, OLED’s emitting material quantum dot uses inorganic material which is cheaper compared to OLED material. This means that the QLED panel can be more reasonably priced, a point of great interest for the industry.

 

However, in order for QLED to be practical there are several issues that need to be solved. Balancing the electrons and holes, and prevention of pin holes that occur in each layer is a key technology needed to increase QLED’s efficiency that is quickly being developed. Also, although cadmium used in QLED is not likely to affect the environment, considering future environmental regulatory concerns quantum dot without cadmium is being researched. Lastly, solution process technology has to be established.

 

If QLED overcomes these issues and its lifetime and efficiency can match those of existing OLED, it is estimated QLED applied products will be manufactured. Professor Lee forecast that QLED would bring positive results of bringing down the cost of display while maintaining most of existing OLED process; QLED uses cheaper quantum dot material for emitting layer whilst continuing to use equipment and common layer of existing OLED technology. Additionally, he also concluded that there will not be any problem for material companies as they will be able to carry on selling materials for quantum dot. Professor Lee went on to ask OLED related companies with anti-QLED views to accept QLED in the same flow as OLED, and for positive considerations.

 

Prof. Changhee Lee, the 1st OLED KOREA Conference

Prof. Changhee Lee, the 1st OLED KOREA Conference

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