[28TH FINETECH JAPAN] Denso, Automotive displays that are directly connected to safety are OLED

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At the 28th FINETECH JAPAN held in Makuhari Messe, Japan during December 5-7, 2018, Hiroyuki Hara, manager of Denso said that OLED will be used as future automotive displays due to their various advantages.

Hara refers to the large screen including the touch panel as the latest trend of automobile display, and now LCD is mainly used. However, OLED is expected to be used more and more in automobiles as the automotive electronics makers and drivers demand high-quality displays.

Saying that key elements in automotive displays are high contrast ratio, wide viewing angle, design autonomy, light weight, low reflection and reliability, Hara emphasized that the display that can satisfy all of these key elements is OLED. In addition, the factors related to image quality such as contrast ratio and viewing angle are directly related to safety for the driver. Thus, OLED is to be adopted more. Referring to the requirements of automotive OLED, he finally commented that improving reliability, such as lowering the luminance drop due to temperature changes and preventing damage to OLED due to high humidity, will be key to OLED for its entry into the automotive display market.

The automotive display is likely to lead the market for next-generation displays following mobile devices and TVs. Various OLED panel makers such as BOE and Visionox, as well as LG Display and Samsung Display, are showing automotive displays at domestic and international exhibitions. Denso also invested Japanese yen 30 billion in JOLED early 2018 to compete with Korean panel makers. Meanwhile, the market for OLED displays for automobiles led by Samsung Display and LG Display is expected to grow to US$ 540 million in 2023 according to UBI Research’s recently published “Automotive OLED Display Report”.

[28TH FINETECH JAPAN] JDI and JOLED, announced Strengthening Cooperation for Mid-sized OLED Market

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At the 28th FINETECH JAPAN held in Tokyo, Japan from December 5 to 7, 2018, JDI and JOLED announced that they would intensify their cooperation in order to target the middle-sized OLED market.

JDI announced that it will actively promote JOLED’s solution process OLED to medium-sized OLED markets such as industrial display markets or automotive display markets through its own design know-how, production infrastructure, and sales channels,.

In particular, JDI announced that it will provide new value to next-generation automotive fields along with JOLED such as support for safety such as electronic mirrors and displays for A/B pillars, new interface functions, movie appreciation using 4-8K displays, and the displays that are harmonized with interior design such as curved surfaces and big screens.

JDI and JOLED also shared booths for exhibition. JOLED introduced 21.6-inch FHD OLED monitors for e-sports and medical applications. In addition, it introduced a number of medium-sized OLEDs such as 12.3-inch HD OLED for automobiles, 12.2-inch FHD flexible OLED, 27-inch 4K OLED for home interior, and 21.6-inch 4K flexible OLED with cylindrical form. It also showcased large OLEDs such as 54.6 inch 4K OLED.

On the other hand, JOLED announced in July, 2018 that it would open its Nomi office for mass production of solution process OLED. Based on 5.5 generation glass substrates, Nomi has production capacity of 20,000 glass substrates per month and plans to mass-produce in 2020.

[Press Release] Foldable OLED Market Grows Fast to US$ 24.6 Billion by 2023

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eporter & Analyst : Daejeong Yoon

5G communication technology introduced from next year can process higher image quality and large-capacity contents such as VR more rapidly, besides real-time streaming service. As the communication speed increases, the relevant contents, are expected to be released, which require high resolution and large screen with graphics detailed.

The current smart phone is getting bigger up to 6 inches, but it is not enough for 4K resolution of 5G communication age. Since 4K resolution is to be possible at 7-inch and larger displays, they might be the most suitable product for the 5G communication era. Foldable smart phones are digital convergence products that can function as smart phones and tablet PCs as the next generation mobile devices that use 7 inch or more displays but maximize portability.

Owing to foldable OLED, foldable smart phones are likely to be available. Several companies have rushed to produce various prototype foldable OLED displays at exhibitions and conferences. A few panel makers even pledged to mass-produce foldable OLED displays competitively. OLED display companies worldwide including Samsung Display have invested enormous development costs in order to preempt the next generation product market, and now foldable OLEDs are starting to appear.

Samsung Electronics, which is leading the OLED smart phone market, is planned to launch the in-folding type foldable phone for the first time in the world next year. Accordingly, Samsung Display has prepared 1.5R foldable OLED. For Samsung Electronics, which has suffered sluggish sales of the Galaxy S series, Foldable Phone is a super premium product that needs to be succeeded.

<Expected structure of Samsung Electronics’ in-folding type foldable phone>

Source: Foldable OLED Report, UBI research

UBI Research (CEO: Yi, Choong-hoon), an OLED research institute, has published Foldable OLED Report. According to the report, the market for foldable OLED in 2019 is only US$ 480 million, but it is expected to grow to US $ 24.6 billion in 2023.

Yi said, “The rapid growth of the foldable OLED market is due to the fact that 7-inch and larger smartphones, which can support 4K resolution, become required products in the 5G communication era. Accordingly, the value of OLED panel makers will be determined by the success of foldable OLED production.”

<Foldable OLED Market Forecast>
Source: Foldable OLED Report, UBI Research

However, foldable OLED is not a product that anyone can produce. Since foldable OLED has a more complex module structure than conventional flexible OLED, it is necessary to overcome the changes in various panel characteristics caused by folding. Especially in in-folding type foldable OLED, compensation circuit technology to overcome TFT resistance change and resilience required when folding and unfolding screen are typical technical difficulties. In order to realize this technology, the key challenges of reducing stress at the area of folding, selecting a proper substrate, determining the ideal stack structure, and optimizing the liftoff process, need to be overcome. Even when folding over 200,000 times, it is required to have reliability that there will be no abnormality on display image quality and surface.

“Foldable OLED Report” published by UBI Research analyzes the development trends of panel makers together with the development issues of major films that determine the reliability of foldable OLED.

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.

[28TH FINETECH JAPAN] Sharp, announced Future Strategy Combining IGZO and OLED

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Mr. Atsushi Ban, Vice President of Sharp presented a future strategy that combines IGZO and OLED through a keynote session at the 28th FINETECH JAPAN, held in Makuhari Messe, Japan from December 5, 2018.

Ban emphasized “The proportion of OLED in the entire display market is expected to grow even higher, and the new value of OLED is no different than flexibility.”

He said, “Sharp is also planning a variety of applications using the thin, light-weight and flexible characteristics of OLED. From the third quarter of 2018, its Taki plant has produced 4.5G backplanes and the Sakai plant is under injecting glass for OLED and module processing for 4.5G 15K quantity.”

Ban also pointed out the possibility of expanding the OLED industry through flexible OLED, commenting that Sharp’s next goal is to develop foldable OLED that combines IGZO. Sharp has pioneered a new display technology, called IGZO, which has been known for its semiconductor properties for years, but Sharp has developed a crystalline form that maximizes its benefits for greater display performance, and IGZO improves the performance of display panels in three significant ways: lower power consumption, higher resolution and special benefits for touch-sensitive displays. Ban expected that it could create new value if IGZO is combined with medium to large sized foldable OLED or rollable OLED.

Finally, Ban introduced Sharp’s IGZO development roadmap and announced that it will develop much improved IGZO.

Fingerprint Full-Screen Smart Phones Begin to Compete

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<Vivo’s full screen smart phone with in-display fingerprint scanner, Android authority>

The competition for front fingerprint recognition of smart phones is expected to become hot.

In the smart phone with the existing home button, the front fingerprint sensor was installed on the home button. Fingerprint security enhances security, but recently, full screen Smartphone without home button has been released and fingerprint sensor has been moved to the back of Smartphone. This has caused disadvantages such as an uncomfortable hand shape when touching a finger to the fingerprint sensor and fingerprints on the camera lens.

In order to improve these points and to implement a complete full-screen Smartphone, the development of integrating full-screen fingerprint recognition with display is continuing.

The method of full-screen fingerprint recognition is largely examined by both optical and ultrasonic methods. The optics are inexpensive and easy to mass-produce, but the OLED substrate must be transparent because the sensor is to be located below the OLED panel. Therefore, it is applicable to rigid OLED using glass as a substrate, but it is difficult to apply to flexible OLED using colored PI as a substrate. The ultrasonic method is most stable in accuracy and durability, but it has a disadvantage of high manufacturing cost.

Currently, Chinese set makers have begun to launch smart phones with optical front fingerprint recognition. The Galaxy S10, which will be released next year by Samsung Electronics, is being watched for the adoption of ultrasonic full-screen fingerprint recognition. LG Display is also developing a display with front fingerprint recognition.

As such, the sales for full-screen smart phones with front fingerprint recognition are expected to be started in earnest. Competition in the smartphone market is expected to become more intense in the second half.