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[SID2019] What material is better for cover windows of foldable OLED? colorless PI or UTG?

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Since Royole introduced ‘FlexPai’, a foldable OLED phone, Samsung Electronics and Huawei have also launched Foldable OLED phones, attracting great interest from the industry and the public.

The biggest change of the foldable OLED phone currently being commercialized or under preparation is that the cover window of the glass material used in the existing flexible OLED has been changed to colorless PI material.

Colorless PI is thinner than conventional cover window glass, which is advantageous in reducing the radius of curvature and has the advantage of not breaking. UTG (ultra-thin glass), which has good surface touch-feel and scratch-resistant glass as thin as possible, is also attracting attention as a cover window material for foldable OLEDs.

At the SID Display Week exhibition in San Jose, KOLON exhibited colorless PI with hard coating. KOLON, which has been ready for mass production of colorless PI since 2018, is currently supplying colorless PI for foldable OLED cover windows to AUO, BOE, LG Display, and Royole.

Hard coating company DNP and TOYOCHEM also exhibited colorless PI with hard coating. DNP’s company official said that the film is under development and its main business area is hard coating, and TOYOCHEM’s company official said that it supplied hard coating samples to KOLON and SKC.

Meanwhile, SCHOTT, a UTG development company, also attracted the attention of the audience by displaying UTG for foldable OLED cover windows. An official of SCHOTT said that the UTG currently being developed is a cover window product for out-folding, not in-folding, and that the thickness is currently in development from 0.7 mm to 2.5 mm in accordance with customer requirements.

As the smartphone set makers are expected to release foldable OLED phones in the near future, competition for related materials is also expected to be intense. Whether the Colorless PI will continue to dominate or whether UTG will be able to exercise its influence is highlighted.

2019 Chinese OLED panel maker equipment order status

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As Korean OLED panel makers do not have a lot of investment, the OLED equipment industry is in a low-demand season. When Chinese OLED panel makers confirm the order status of equipment orders in 2019, orders are being made centering on equipment and module line equipment required for new technologies rather than new lines.

In China panel makers BOE and CSOT, some equipment was ordered in March of this year for the development of flexible on-cell touch technology, and Korean equipment makers seem to have received orders from Wonik IPS and Iruja. In addition, since last month, the BOE Chengdu line has begun full-scale mass production and ordering of modular products along with foldable product preparation. Korean equipment makers will also receive equipment orders from BOE and proceed with production.

Starting this month, Visionox Hebei Line, which is set to start full-fledged investment this year, has begun placing orders for long-term delivery equipment and automation equipment. In addition, Wuhan Tianma is making some complementary investments in flexible process equipment, and EDO, Royole, and Truly are expected to invest in the future depending on market conditions.

UBI Research AMOLED process equipment industry report, which is scheduled to be published in May 2019, will be covered in detail in investment situation and equipment supply chain in China panel makers.

[BOE Chengdu Module Line Order Status]

IT Industry in China is still hot, OLED is center on that

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News about when, where, what size of new investments emerge from Samsung display who leads Recent Small and Medium-sized OLED Market and LG display who leads large OLED market should come true are continuously main news in Display industry. In the middle, Maybe, publics who are invovled in industry, are interested in watching when will China’s panel companies who are processing on construction of flexible OLED line supported by government between Korea narrows the technology gaps.

The Hi-Tech Fair, which celebrates its 19th anniversary this year, is a representative event showing how much China is interested in the IT industry.
Hi-Tech Fair held in Shenzhen, China from November 16th to 19th exhibits almost all fields relevant to IT industry. Communication with Display is a key point to increase importance of IT industry and these two field is developing by complex connecting with another field.

Exhibition include total 9 hall and the newest technology such as Smart cities, robots, aviation, telecommunications, home appliances, games, and other technologies that connect with IT can be seen in that area. Among them,  one that stick out in 1 Hall is Visionox which is large panel company in China, many people are gather together to watch China’s Display Panel technology.

Current smart phone display’s trends are a bezel-less design that maximizes the screen by minimizing the bezel and a curved design represented by the Galaxy Edge series. In this exhibition, Visionox showed a the bezel-less design smartphone which applied rigid OLED and a curved design smartphone which applied flexible OLED having 8R bending radius.

According to officials, disclosed curved display is going to apply to smartphone which will launched in market earlier in 2018. So, this process is currently making decision about supplying with china’s smartphone company. In addition, a variety of flexible displays being developed for future foldable and rollable applications have been on display.

On the other side in Hall, Royole, who manufactures and sells VR devices for China’s leading OLED applications, exhibited flexible sensors with VR device “Noon” Also, they did not exhibit their technology, they disclose a very thin flexible display of 0.01mm through wathcing a video and keep delivering message about continous Display technology development. Also, we can see the various forms and functions of display panel is applied to electrical instruments such as car, robot in many booths. Among them, OLED is expected to continue to grow in significance of IT industry in the future due to its wide range of applications and its technical strengths such as design excellence, thin panel and high resolution.

여전히 뜨거운 중국의 IT 산업, 그 중심에 있는 OLED

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최근 중소형 OLED 시장을 주도하는 삼성디스플레이와 대형 OLED 시장을 이끌어가고 있는 LG 디스플레이의 신규 투자가 언제, 어디서, 어떤 규모로 이루어 질 것인지에 대한 소식이 지속적으로 디스플레이 산업의 주요 뉴스로 오르내리고 있다. 와중에 정부의 지원을 받아 집중적인 플렉서블 OLED 라인 건설을 진행하고 있는 중국의 패널 업체들이 언제쯤 현재 한국과의 기술격차를 좁힐 것인가는 아마 산업에 있는 모든 사람들의 관심사일 것이다.

올해 19회를 맞이하는 Hi-Tech Fair는 중국이 IT 산업에 얼마나 관심이 많은지를 보여주는 대표적인 행사이다. 11월 16일부터 19일까지 중국 심천에서 개최되는 Hi-Tech Fair에는 IT산업과 관련이 있는 거의 모든 분야의 전시가 진행된다. IT산업에서 점점 더 그 중요성을 높여가고 있는 것이 디스플레이와 통신이며, 이 두 분야는 다른 분야와 복합적으로 연결되어 발전하고 있다.

전시관은 총 9홀까지 있으며 스마트 시티, 로봇, 항공, 통신, 가전, 게임 등 IT와 연결지어 생각할 수 있는 다양한 산업들의 최신기술들을 엿볼 수 있다. 그 중 1홀에서 가장 눈에 띄는 것은 중국의 한 대형 패널 업체인 Visionox로 많은 사람들의 중국의 디스플레이 패널 기술을 보기 위해 모여 있었다.

 

 

현재 스마트폰 디스플레이의 트렌드는 갤럭시 엣지 시리즈로 대표되는 커브드(curved)디자인과 베젤을 최소한으로 하여 최대한의 화면을 구현하는 bezel-less 디자인이다. Visionox는 이번 전시에서 플렉서블 패널을 적용한 8R의 커브드 디자인과 Rigid 패널을 적용하여 bezel-less 디자인 스마트폰을 모두 제작하여 공개하였다.

관계자에 따르면 공개된 커브드 디스플레이는 2018년 초 시장에 론칭되는 스마트폰에 적용될 계획으로 중국 스마트폰 업체와 공급 협의가 진행중이다. 이 외에도 향후 폴더블과 롤러블 어플리케이션을 위해 개발중인 다양한 형태의 플렉서블 디스플레이가 전시되었다.

다른 한쪽에선 중국의 대표적인 OLED 적용 VR 기기를 제작, 판매하는 Royole이 VR 기기 “Noon” 과 함께 플렉서블 센서 등을 전시했다. 또한, 직접 전시하진 않았지만 동영상을 통해 0.01mm의 아주 얇은 플렉서블 디스플레이 시연을 공개하며 지속적인 디스플레이 기술 개발에 대한 메시지메 전달하고 있다.

이 외에도 많은 부스에서 자동차와 로봇을 비롯하여 각종 전자 기기에 디스플레이 패널이 다양한 형태와 기능을 가지고 적용되고 있는 것을 확인 할 수 있다. 그 중에서도 OLED 는 디자인의 우수성, 얇은 패널, 고해상도 등의 기술적 강점으로 적용범위가 무수히 넓어 향후 IT 산업에서 중요성은 계속 커져갈 것으로 보여진다.