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Apple adopts LTPO TFT to extend battery life time to Apple Watch Series 4

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Reporter & Analyst : Daejeong Yoon

Apple released its Apple Watch Series 4 with enhanced healthcare features on a larger screen than before, in the Steve Jobs Theater at Apple Park in California, USA on September 12.

<Apple Watch Series 4, Source: Apple.com>

In this announcement, Apple brought Apple watch series 4 with a new technology called LTPO to improve power efficiency.

LTPO stands for low temperature polycrystalline oxide. It is a kind of TFT using only the advantages of poly-Si with good charge mobility and IGZO with low power driving. LTPO TFTs have low leakage current and good on / off characteristics, which lowers power consumption and increases battery life.

<Apple’s LTPO TFT patent>

In addition, Apple increased the size of its Apple Watch 4 to 40mm and 44mm. The edge-to-edge screen is 35% and 32% larger than previous models by narrowing the bezel compared to previous models. The screen resolution was 368×448 pixels for the 44mm model and 324×394 pixels for the 40mm model. The display of Apple Watch4 is a plastic OLED made by LG Display with a maximum brightness of 1,000 nit. The Apple Watch Series 4 starts at US$399 for GPS model, while the cellular model starts at US$499. The Apple Watch Series 4 is available for pre-order from Septmber14 in the U.S. with the availability beginning September 21.

Market for OLED materials and components is forecast to grow to US$37 billion in 2022.

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In the 2018 OLED material and component report and Market Track published by UBI Research, the entire market for OLED materials and components market is expected to grow at a CAGR of 29% by 2022, forming a market of US$ 37 billion in 2022.

<Market forecast for OLED materials and components>

The overall OLED material and component market forecasted in this report is calculated based on the panel makers’ available capacity and includes all the materials and components for OLED production.

The total OLED material and component market is counted as US$ 9,794 million in 2017 and is expected to grow by 35% to US$ 13,264 million in 2018.

Major growth drivers are mentioned as capacity expansion of Samsung Display and LG Display inclusive of Gen6 flexible OLED mass production lines of Chinese panel makers.

UBI Research commented “Utilization of Samsung Display in the first quarter of 2018 was poor, but it is turning to normal from the second quarter, and LG Display and Chinese panel makers are also aiming to mass-produce this year. In particular, it will have a major impact on the growth of the materials and components market in 2018 whether Samsung Display’s A4, LG Display’s E5, E6 and BOE’s B7 lines will be in full operation.”

In the 2018 OLED material and component report, the market is forecast for 20 kinds of major materials and components used in OLED for mobile devices and large-area OLED, including substrate glass, carrier glass, PI and organic materials for TFT. In addition, the report covers industry trends and key issues related to the core materials, while Market Track forecasts the expected purchase volume and purchase amount by panel makers.

AOI equipment market for OLED mobile devices is expected to reach US $ 23.3 billion by 2021

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AOI equipment used for small and medium-sized OLED inspection is non-contact inspection equipment that analyzes the presence of defects by irradiating the product with light and measuring the difference in the amount of the reflected light. The AOI equipment detects not only pattern defects by recognizing the difference through comparison of repeated patterns but also foreign objects on mask and substrate before and after LLO process.

As a result, AOI equipment is used in almost all OLED processes such as TFT pattern inspection, mask particle inspection, OLED pixel inspection, encapsulation inspection, and pre-and after LLO substrate inspection.

HB Technology, DIT, and LG PRI are major AOI equipment manufacturers. HB Technology, DIT and LG PRI produce almost all AOI equipment used for OLED process, whereas HIMS mainly produces AOI for mask foreign object inspection.

According to the ‘2017 Inspection and Measuring Equipment Report for OLED Mobile Device’ recently published by UBi Research, the market for inspection and measuring equipment in the entire OLED equipment market is estimated to be US $ 6.63 billion (about KRW 7.3 trillion) from 2017 to 2021. Among them, AOI equipment market is expected to be US $ 2.33 billion.

When it comes to processes, the AOI equipment market for TFT process is expected to create the biggest market of US $ 1.36 billion, and the AOI market for OLED pixel process, encapsulation and cell process will be US $ 430 million, US $ 390 million and US $ 160 million, respectively.

UBi’s Researcher, Yoon Dae Jeong said, “We can discover the added value of AOI equipment in that AOI equipment can improve yield by detecting and repairing defects during the OLED process and reduce the quality cost by preventing the further process of defective products.“ “With the technological development of AOI equipment, panel manufacturers are also actively introducing AOI equipment, and the AOI market is expected to grow even larger, as the inspection items are increasingly being strengthened.”

<2017 ~ 2021 OLED Mobile AOI Equipment Market Forecast>

[iMiD 2017] JOLED announces printing-type OLED development trend and future road map

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At the ‘IMID 2017 Business Forum’ held in COEX, Seoul from 18th to 19th, Toshiaki Arai, chief technologist of JOLED announced JOLED’s printing technology and future road map.

<JOLED’s Toshiaki Arai chief technologist>

Toshiaki Arai, chief technologist stated that a stable jetting technology at 220 ppi level has been currently secured; high resolution OLED with more than 300 ppi has been developed at Gen 8.5 but there are some issues such as jetting accuracy and stability.

Toshiaki Arai introduced TG-TAOS (top gate-transparent amorphous oxide semiconductors) TFT, which will contribute to saving the unit cost of OLED with excellent performance at low price.

He also announced the future strategy of JOLED, stressing that, instead of small and large OLED dominated by South Korean companies, the middle-sized OLED for tablet and monitor with more than 200 ppi. Joled is the only OLED panel maker that unveiled its 21.6 inch 4K RGB OLED in 2017, using printing process, and has pilot launched.

<JOLED’s 21.6 inch 4K OLED in application of printing method>

On the other hand, according to the Nihon Keizai newspaper in Japan, JOLED is reported to have invested 100 billion yen in mass production of printing-type OLED. In addition, Toshiaki Arai stated that the OLED test samples manufactured by printing process have been provided since this April and the mass production will realize in the second half of 2018.

 

AUO unveils round OLED and foldable OLED for the smart watch in Touch Taiwan 2017

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AUO showed the OLED that can be collapsible and three kinds of round OLEDs (1.2-inch, 1.3-inch, 1.4-inch) for the smart watch in Touch Taiwan 2017 held on 20th.

The round OLEDs in 1.2-inch and 1.4-inch of AUO are 326ppi, and it lowers an electric consumption at 30% versus former production goods. AUO also improves the visibility capacity in outdoor by embedding the brightness increase mode to make a display screen of two kinds of round OLEDs be clear even under bright sunlight.

The 1.3-inch OLED aimed at the smart watch for kids is light in weight, and strengthens the usability with a power saving mode and an intuitive touch interface function.

AUO displays two types of 5-inch flexible OLEDs that can be rolled or folded. Such two types of 5-inch flexible OLEDs apply the plastic board and AUO self-developed structure (special structural layer).

<AUO, 5 inch foldable OLED touch panel>

The 5-inch foldable OLED combines a flexible touch screen sensor that is developed by AUO itself.  The company said “it would provide excellent image quality, even if the curvature radius of the folded part is 4mm and less”.

For 5-inch rollable OLED, they explained “The thickness of the panel is just 0.1mm and only 5g. This model with the rolling radius of 4mm will provide wide color gamut”.

In last SID 2017, AUO has announced about that they applied the structure locating the TFT (Thin Film Transistor) and TFE (Thin Film Encapsulation) at the neutral axis to stand the compression stress or tensions during being folded.

LG Display, Awarded ‘Achievement Award’ for development of OLED TV at Japan OLED forum

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LG Display announced on the 16th that it received the ‘Achievement Award’ for the first time as a foreign company in recognition of the superiority of WRGB technology that enabled the production of large OLED TV and the pioneering of the large OLED TV market at the 24th Japan OLED forum held at the NHK Science & Technology Research Laboratories in Tokyo.

55-inch transparent OLED, LG Display unveiled at CES 2017. Source : LG Display

The Japan OLED forum is an academic society where experts from Japan’s major industries and academia gather together to discuss and discuss solutions for academic, applied research, and practical applications related to OLED, such as Tokyo University, Kyushu University, Sony, JDI and JOLED.

According to the Japan OLED forum, LG Display is recognized for its technological ability to produce large-size OLED TVs and for pioneering large OLED TV market and won the award for achievement for the first time as the overseas company.

The technology that LG Display recognized for its achievements is WRGB technology that builds up R, G, B organic materials on a thin film transistor (TFT) vertically and adds white elements to make four subpixels, not the RGB methods that arrange R, G, B organic materials on a thin film transistor (TFT) horizontally..

LG Display used this technology to mass-produce OLED TV panels for the first time in the world in January 2013 while pioneering the large OLED TV market.

LG-Display emphasized “this award is significant because it acknowledged the technology of LG Display, which produces large-sized OLED panels in Japan, which is the mainstay of flat panel displays”.

Oh Chang-ho, Managing Director of LG Display’s OLED TV Development Group, said, “I am extremely honored that LG Display has been recognized for its OLED technology by industry-leading experts”, and “We will make efforts to contribute to the development of the display industry by developing differentiated OLED products in the future,” .

On the other hand, LG-Display was not only able to realize excellent image quality with 65inch UHD Wallpaper OLED panel in SID 2017 but also received the Display of the Year this year as an innovative product that presents new possibilities for display in terms of application scope and design.

UBI Research , Published the Market Report on OLED Manufacturing Equipment

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■The OLED equipmentmarket is expected to reach $84.9 billion in 5 years.

■Korean and Chinese panel companies will take over 90% of investment in panel equipment.

 

According to ‘2017 OLED Manufacturing Equipment Annual Report’ published by UBI Research, the entire equipment market of OLED is expected to total$84.9 billion(about 93trillion KRW) from 2017 to 2021. In 2017, $16.4 billion(about 18 trillion KRW) will be invested in OLED equipment.

The OLED equipment for the market analysis is largely categorized by process into 5 kinds of equipment; TFT, OLED, encapsulation, cell, and module. The investment costs including distribution equipment and test equipment of each process are calculated, and touch-related equipment is excluded from the market analysis.

Hyun Jun Jang, a senior researcher of UBI Research forecasts that the two countries will lead the OLED market due to the massive investment from both Korean panel companies occupying the OLED industry and latecomers Chinese panel companies.

According to this report, China and Korea will actively invest in OLED equipment from 2017 to 2017, showinga 48% and a 42% OLED market share, respectively. In particular, the two countries are expected to make the largest investment of $32.8 billion(about 36 trillion KRW) in 2017 and 2018.

Samsung Display has been expanding small and medium OLED lines to be applied to Galaxy series and Apple, and LG Display has been investing in both small & medium and large-size OLED lines. China’s BOE and CSOT are likely to invest heavily in OLED line because especially BOE has decided to invest more than 30K in small and medium OLED lines every year since 2017.

<left) OLED Equipment Market Share by Process,    right) OLED Equipment Market Share by Country>

From 2017 to 2021, itis forecast that TFT equipment, OLED pixel patterning equipment, encapsulation equipment, cell equipment, and module equipment will have a 45%, 17%,13%,13%, and 12% market share, respectively. In near future, the demand for flexible OLED will be likely to increase so that cell and module equipment will gain more importance having a 25% market share.

[New OLED report] Market report on AMOLED Component and Material for mobile devices

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UBI Research published AMOLED component and material report for mobile devices. The report forecasted the future market by selecting 16 key component and material among the various component and material required for producing rigid AMOLED and flexible AMOLED for mobile devices.

According to the report, first, it is classified that the glass required for producing AMOLED for mobile is for substrate, encapsulation and carrier which is supporting PI substrate for producing flexible AMOLED essentially and the market is expected to reach US$ 92 million in 2017. In 2021, it is expected to grow up to US$ 185 million which is 2 times more than current.

The report also forecasted about the cover window market attached to outermost of AMOLED through a detailed analysis. The cover window market is expected not only for the 2D cover window for rigid AMOLED and the 3D cover window for flexible AMOLED currently used but for the plastic cover window market which is essential for a foldable smart phone in the future.

The cover window market of these 3 types is expected to grow rapidly with the growth of the flexible AMOLED market and to reach US$ 11.9 billion in 2021.

[OLED summit 2016]LG Display, presentation of must-be developed pOLED’s core technology

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In OLED summit 2016 held in San Diego, USA on 21st(local time), general manager of LG Display Joosu Im gave presentation on “Going forward with pOLED & future challenges” which is about 5 core technology that must-be developed in pOLED and the next pOLED.

As 5 types of core technology of pOLED, dream picture quality, design freedom, process simplication, cost innovation, a diversity of pOLED products were selected.

The presentation focused on topics such as, in dream picture quality, HDR and BT-2020 are applied in high resolution, and in design freedom, new TSP sensor development such as low stress TFT and metal mesh, and durability improvement of flexible window cover.

Also, he emphasized the process development for reducing the panel layer such as low temperature process and touch integration for process simplification, and the need for cost innovation through it. Lastly, he suggested material development (such as phosphorescence, TADF blue) in low power for diversity of pOLED products such as monitor for VR and PC, and automobile diversity of pOLED products, and also suggested changes of pixel design for enhancing the open ratio.

As a new opportunity for pOLED, he pointed out applications on foldable, automotive, and VR devices, and mentioned transparent display as the next pOLED.

This LG Display presentation is very much similar to Samsung’s previous presentation about Samsung Display in IMID 2016, and it looks like the development process and roadmap of the two companies are identical in pOLED (flexible OLED).

Especially, seeing that BT2020 application in AMOLED panel for mobile is previously mentioned by Samsung Display early this year, and now also mentioned by LG Display, it is expected that BT2020 application will become another main issue.

< LG Display general manager Joosu Im >

< Samsung Display presentation contents, IMID 2016 >