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[IMID 2017] Opening solution for next generation high-resolution OLED implementation

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Various solutions for high resolution OLED implementation were released at iMiD 2017 held in COEX from October 18th to 19th. As the resolution of small and mid-sized OLEDs, which are currently being commercialized, is staying at the QHD level, the solutions released at this time have attracted a great deal of attention from display members.

First, Hwang Chang-hoon, CEO of OLEDON, who is developing plane source FMM deposition technology, announced at the business forum, “The plane source FMM deposition technology currently being developed is the only alternative for ultra-high resolution OLED manufacturing at 2,250 ppi”. Hwang Chang-hoon CEO said, “We measured the shadow distance using a-step, and it was 0.38 μm. We can fabricate OLED device with 2,250 ppi only if we have this shadow distance.” “We are currently looking for shadow-free process conditions”

<Difference in shadow distance between point source and plane source>

In addition, Hwang Chang-hoon said, “We first co-deposited the host material and the dopant material on the metal plate to evaporate the deposited green donor thin film and measure the green target thin film with the same PL wavelength for the first time” and “Color control of target thin films made with plate sources can be controlled by the amount of dopant molecules in the donor film, so color control is expected to be easy”.

<OLEDON plane evaporation co-deposition material>

AP Systems, which recently announced the successful development of 1,000 ppi FMM using ultra-short pulse laser (USPL), exhibited 5.28 inch FMM of 825 ppi and 4.72 inch FMM of 677 ppi at this exhibition. A company official said, “By developing a burr-free laser process to solve the burr problem caused by the heat generated during the fabrication process, it is possible to fabricate not only FMM of 1170 ppi but also FMM of various shapes”.

<5.28 inch 825ppi FMM of AP Systems>

Finally, Philoptics unveiled FMMs fabricated using electro forming, especially, FMM of 1,200 ppi, which attracted attention this time, was displayed separately in the VIP room. A company official said “We have secured the stability of the process for the production of 1,200 ppi FMM,” and mentioned “We plan to deliver it to panel makers for testing in the first half of next year, and aim to develop FMM at 2,000 ppi later.”

<FMM of Philoptics manufactured by electro forming method>

As such, in this iMiD 2017, various solutions for high-resolution patterning of OLEDs has been released. Recently, as the number of contents requiring high-resolution OLED such as virtual reality contents increases, interest of smartphone users are increasingly interested. It is worth noting which solution will enable the small to medium-sized UHD OLED era.

Who Will Get The First Full-Screen Display Smartphone Title, Samsung Or Apple?

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Full-screen display smartphone is expected to be launched soon. According to the recent report ‘Key Issue and The Market Analysis for Foldable OLED – Flexible OLED Annual Report’ by UBI RESEARCH, a market survey company, left-right bezel-less flexible OLED dominate the smartphone market, and later full-screen display with minimized or without both left-right and up-down bezel will appear in 2017, thereby leading the future market.

<Smartphone Display Development Trend Outlook>(Source: UBI RESEARCH)

The more specific circumstances were caught. Apple Insider announced that Apple recently applied for a design patent(US20150303244A1) of electronic devices with display-integrated light sensors, quoting the USPTO’s announcement on October 11(Local Time).

<Design Drawing 1 of Apple’s Patent-Pending Electronic Devices with Display-Integrated Light Sensors>

Apple used the examples of the placement of Ambient Light Sensor or Proximity Sensor around the side of display, and of the protection of display and sensor circuit by glass or plastic transparent encapsulation layer. Apple Insider expects that this design will be able to reduce unnecessary space and make full-screen display possible.

<Design Drawing 2 of Apple’s Patent-Pending Electronic Devices with Display-Integrated Light Sensors>

At the 2016 IMID Business Forum at COEX in Samseong-dong on October 26, Samsung Display chief expert, Park Won-sang announced display trend about screen size, which boosted confidence. Chief expert, Park Won-sang said that “Display size compared to set size is very important due to the characteristic of mobile phones with a size limit. The display area(hereinafter “D.A”) of edge display was 80%, full-screen mobile phone D.A was larger than 90%, and this is one of the major trends that will lead the market”. The techniques including an all-in-one glass fingerprint recognition module and an ultrasonic fingerprint recognition module have not been mentioned yet, but an entirely innovative full-screen smartphone will be introduced by removing left-right bezel as well going beyond the left-right bezel-less type of Note 7.

<Samsung Display’s Presentation, 2016 IMID Business Forum>

LG also applied a patent of full-screen display. According to Patently Mobile’s report on June 2015, not physical but virtual button and App icon were applied. But, design itself cannot exactly show materials and interior parts except appearance, and it is now uncertain whether it will be developed or not as there is no further news after the patent application.

<LG Electronics Granted Home-Buttonless Smartphone using Flexible Display>>(Source : Patently Apple)

Likewise, many smartphone companies are actively reviewing the introduction of full-screen display because it might allow customers to experience the biggest change in addition to the product’s immersive nature. Besides, there are recently some opinions that with the expanding VR market, OLED display without a latency issue and wider display area are necessary to be applied to HMD(Head Mounted Display) attached with a mobile phone.
Meanwhile, ‘Key issue and Market Analysis for Foldable OLED’ Report by UBI RESEARCH forecasted that full screen AMOLED panel will be firstly launched in 2017, accounting for 60% of the total flexible AMOLED panel market and going beyond the bezel-less type of flexible AMOLED panel market.

Meanwhile, ‘Key issue and Market Analysis for Foldable OLED’ Report by UBI RESEARCH forecasted that full screen AMOLED panel will be firstly launched in 2017, accounting for 60% of the total flexible AMOLED panel market and going beyond the bezel-less type of flexible AMOLED panel market.

<Definition by Flexible OLED Type and Market Share Outlook >(Source: UBI RESEARCH)

Absolute Requirements for the Automotive OLED Display’s Success

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On October 15, in IMID Exhibition Business Forum held in Korea International Exhibition Center (October 14-16), KATECH (Korea Automotive Technology Institute)’s head of Intelligent Control System R&D Center Dr. Inbeom Yang presented ‘Future of Automotive Technology and the Role of Smart Display’ and forecast the future of automotive display.

 

Dr. Yang revealed that “if existing vehicles focused on technological factors, future vehicles will evolve entirely centering on the driver, and the automotive display also will develop following this trend”. He also added that the driver’s safety and convenience have to be the priority.

 

Dr. Yang gave 4 examples of future automotive display. Firstly, he discussed ADAS and their flaws. ADAS (Advanced Driver Assistance Systems) help the driver to operate the vehicle safely. If ADAS can be actualized through displays such as HUD (head-up display), the driver’s safety can be maintained with ease.

 

The second item mentioned was a function that notifies the driver status reports linked with time and location. Dr. Yang reported that a device needs to be developed that can function in specific situations with sensors and sounds as well as on display.

 

Dr. Yang forecast that if display, touch technology, and haptic technology are combined and applied to vehicles, operation and feedback will be simpler for the driver. He announced that multi-functional & configuration display will also be introduced which will allow driver to recognize and control.

 

Audi’s concept vehicle that was presented in IAA 2015 Audi e-tron quattro has full OLED interface and all functions required for the vehicle operation can be controlled via touch display without physical buttons.

 

As futuristic displays such as these are developed that increases driver’s convenience, the proportion of display within a vehicle is expected to increase, and developed focusing on the driver centered UI (user interface). OLED Display can maximize the driver’s accuracy with fast response rate and high contrast ratio. Along with safety, and design freedom that comes with flexibility, it is suitable for automotive display. However, the linkage with the UI system optimized for the driver is essential rather than performance of the display panel itself; collaboration between display panel companies, and automotive system and peripheral companies is expected to be a major point in early market occupancy between automotive display panel companies.

Audi Q7 3.0 TDI quattro ,Geneva International Motor Show