OLED, the mainstream of HMD devices for VR

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The ‘PlayX4’ opening ceremony, a next-generation augmented game show, was held at Kintex exhibition hall 2, Ilsan, Goyang, Gyeonggi-do on the 25th. During the event, a number of companies presented VR contents, using HMD (head mounted display) devices in application of OLED, such as Oculus Rift, HTC Vive and Gear VR to improve immersion and reduce motion sickness.

Realitymagiq, a professional of VR game developer, introduced a multiplay game. In reply to a question on immersion into VR, “Device performance is essential for immersive in VR, and to reduce latency, the major culprit for sickness, OLED is more than enough,” said Kim Sung-kyun, the CEO of Realitymagiq. “However, resolution needs to be further developed and so does GPU performance.”

Motionhouse Co., Ltd. has introduced MotionGear for users to experience tilting and engine vibration during actual driving. Oculus Rift OLED-applied headset, was used; “Oculus Rift was the one that could minimize the motion sickness most”, said a participant.

Latency refers to the time length for the CPU to receive information from the tracker and output, which is related to the response time of the display and the information processing of the graphics card. The response time of the display required in VR is known to be less than 3ms. Samsung Display compares the response time between OLED and LCD on the blog and emphasizes that OLED is the optimal display for VR HMD device.

The Response time between OLED and LCD, Source: blog.samsungdisplay.com

In fact, many VR content companies used OLED-applied HMD devices such as Oculus Rift, HTC Vive, and Gear VR, and users seemed to enjoy VR game, not suffering from dizziness

Recently, aside from Oculus Rift and HTC Vive, many HMD makers such as recently launched Sony’s PS VR and Royole’s Royole Moon are OLED-based, not LCD, and surely the OLED application is expected to expand further.

[SID 2017] BOE, Unveiled the World’s First True QLED

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BOE attracted the big attention of visitors by unveiling the world’s first 2 types of QLEDs(5 inch, 14 inch) based on electroluminescence quantum dot technology.

BOE’s 5 inch QLED has a resolution of 320 x 240 (80ppi) with LTPS TFT. On the other hands, 14 inch QLED has a resolution of 960 x 540 (80ppi) with oxide TFT.

<BOE’s 5 inch (left) & 14 inch (right) QLED display>

BOE’s QLED display this time is special because it is an ‘electroluminescence quantum dot technology’-based display without backlight, unlike Samsung Electronics’ SUHD TV based on ‘photoluminescence quantum dot’.

In general, quantum dot-based displays are categorized into two types of mechanisms: photoluminescence quantum dot and electroluminescence quantum dot.

Photoluminescence quantum dot technology has a mechanism where the material stimulated by external luminescence emits light again. Samsung Electronics applies this technology to its LCD TV by using the QD sheet attached on blue light emitting from backlight.

On the other hands, electroluminescence quantum dot technology has a mechanism that emits itself when electricity is put, and its material is inorganic and structure is similar to OLED.

Choong Hoon Yi, president of UBI Research said in analyst column that “photoluminescence quantum dot technology is applied to current LCD TVs to improve color reproduction of display. It must be the best product as LCD TV, but electroluminescence quantum dot-based display is a true QLED display”

A BOE employee explained “QLED display improves its reliability by using inorganic matters for existing OLED structure instead of organic matters, featuring better color gamut than OLED. 100% inkjet printing-based QLED is better in terms of manufacturing cost saving and large scale, compared to deposition-based OLED”.

The industry has expected that it will take more than 5 years to mass-produce QLED display, so according to BOE’s research, there’s a keen interest on how much the commercialization of electroluminescence quantum dot-based QLED is moved up or how much it influences the display industry.

2017 Q1 AMOLED Performance Analysis

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According to UBI Research, sales of AMOLED in the first quarter of 2017 were US$ 4.31 billion, up 15% from the same quarter last year (Q1 2016). Shipments amounted to 99.1 million units, up 9% from the same period last year.

AMOLED accounted for 88% of smartphone sales and 7% of TV sales. Especially, TV sales market share grew by 5% YoY and it shows big growth of OLED TV market.

With Samsung Electronics’ Galaxy S8 and S8+ launches and mass production of AMOLED panels for Apple, and joining OLED TV market of Japanese companies such as Sony, Toshiba and Panasonic, the AMOLED market will continue to grow even after Q2. Mobile AMOLEDs are expected to ship more than 100 million units each quarter, and TV AMOLEDs are expected to ship more than 300,000 units per quarter.

UBI Research estimates that the total AMOLED market will grow to a CAGR of 33% by 2020, reaching US$ 59.3 billion.

<Total AMOLED market sales forecast>

JOLED, Production of 21.6 inch OLED by the world’s first inkjet printing process

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JOLED announced on last 17th that it developed the world’s first 21.6 inch 4K OLED panel with RGB inkjet printing process and shipped the prototype from April.

Developed by JOLED’s RGB inkjet printing process, the thickness of the panel is 1.3mm, weighs 500g, brightness is 350cd/m2, and contrast ratio is 1,000,000: 1. According to JOLED, this panel was applied to medical monitors.

<21.6 inch OLED and its specifications developed by JOLED, source: JOLED>

JOLED said ‘Ink-jet printing is a technology for printing by applying a light emitting material, which the production process is simple and easy to expand to diverse screen size, so it has been put into practical use. The top emission, viewing angle and color reproducibility of OLED panels will be improved.’

 

In addition, JOLED has announced its plans for the future ‘to expand its inkjet printing-type small and medium-sized OLED applications (such as gaming monitors, automotive applications, etc.) or suppliers continuously.’

JOLED is a company established by INCJ, JDI, Sony and Panasonic, and is actively developing inkjet printing process. Among the panel makers, JOLED is the only company that has released a product developed by inkjet printing process in 2016.

<55inch 4K flexible AMOLED panel unveiled by JOLED in 2016>

According to Ubi research’s ‘ Market Entry Analysis for Solution Process OLED -The Possibilities and Opportunities‘, ink-jet printing is one of the process methods of the solution process, in which the ink-jet head is used to drop ink onto each pixel. Major panel makers are developing a solution process using this process, and JOLED is expected to take a lead in the future.

The solution process is capable of realizing large-area OLED panel with RGB pixel structure in Gen8 and above, has high material utilization efficiency, and is developed as a simple layer, which is advantageous in cost reduction in mass production success.

Meanwhile, Lee Choong-hoon, CEO of UBI Research, said, “Although the large-area OLED market is targeting the premium market with the WRGB method, the solution process will be the core technology since low-cost and high-production technology is key to replacing LCDs with OLEDs.”

[SID 2017] Samsung Display, Unveil the world’s first 9.1inch Stretchable AMOLED

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Samsung Display unveiled the world’s first 9.1inch stretchable AMOLED, including touch, on SID 2017, boasting the world’s best AMOLED technology.

In addition to presenting a paper entitled “9.1-in-stretchable AMOLED display based on LTPS technology” at SID 2017 symposium, Samsung Display has attracted great interest in visitors by exhibiting real objects in the future display zone at Samsung Display’s.

In this 9.1 inch stretchable AMOLED, the PI is formed on the shrinkable film substrate, and then the stretchable region is patterned. And it is structured that TFT and OLED are formed on the patterned PI, and multi-touch sensor is realized at the same time.

<9.1inch stretchable AMOLED structure of Samsung Display>

In addition, stretchable AMOLEDs can be implemented in both convex and concave shapes, and up to 12 mm in concave shapes.

Stretchable display is the final technology of flexible display, so it is expected to be applied to various fields such as clothing and human skin because it does not receive any form restrictions and it is expected to create applications for new areas.

Samsung Display, which is leading the AMOLED market for mobile devices with flexible AMOLED, is expected to maintain its technological gap with latecomers once again, and also is expected how would it stimulate latecomers who are pursuing AMOLED technology at high speed.

<Samsung Display’s exhibition booth with 9.1inch stretchable AMOLED>

<9.1inch stretchable AMOLED specification of Samsung Display>

<9.1inch stretchable AMOLED displayed by Samsung Display, Source: Samsung Display>

[SID 2017] Premium TV market, LCD vs OLED war re-ignition

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In the premium TV market in 2017 OLEDs seemed to catch up early with LG Electronics’ OLED TV sales volume growth and Sony’s OLED TV market gains. However, with the announcement of AUO, Taiwan’s leading LCD maker, that LCDs are more advantageous in the premium TV market than OLEDs, once again, competition between OLED TVs and LCD TVs is expected to intensify.

In the keynote session of SID 2017 held in Los Angeles, USA from May 22, AUO CEO Paul Peng made a presentation with the theme of “The warring states of display technologies” that LCDs would continue to outperform OLEDs in the premium TV market.

Paul Peng has three major claims that LCD is more dominant.

First is the performance that LCD is superior to OLED in terms of maximum size, peak brightness, ambient contrast ratio, color gamut, image sticking, and lifetime.

Second is the cost. In the black Friday in 2016, 65-inch HDR 4K narrow bezel LCD TV was US $ 1,099, while OLED was more than double with US $ 2,800.

Lastly, eco friendly. The industrial water used in the manufacturing process is used more for OLED manufacturing than LCD, and the power consumption of OLED is about twice that of LCD. The replacement cycle is 2 to 4 years for OLED, but LCD is 5 to 8 years which is more than twice as high as LCD, so is more environmentally friendly than OLED.

Since the launch of OLED TVs, there has been intense competition between LCD and OLED camps, but OLED market share continues to rise in the premium mobile market, and even in the premium TV market OLED seemed to be ahead of LCD. However, with AUO’s announcement in the keynote of SID 2017, the world’s largest display society, it is expected to intensify the fierce battle between OLED and LCD in the display industry.

 

LG Display, Will Unveil Its Next-generation Displays at’ SID 2017’

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LG Display will unveil future displays at ‘SID 2017’ to be held at Los Angeles Convention Center, USA from May 23 to 26. LG Display will prepare its own booth under the theme of “Our Technology, Your Innovation” and showcase its unique displays at three Zones of OLED TV, IT & Mobile, and Automotive.

First of all, LG will display its paper-like ultrathin 77-inch UHD Wallpaper TV. Due to OLED Technology, this TV has an excellent resolution and is so thin and light that it can be tightly attached to the wall, thereby maximizing the design effect. LG’s 65-inch UHD Wallpaper TV panel which will be unveiled was selected as ‘the Best Display of This Year’ for its highest technology at the SID.

<LG Display’s 65” UHD Resolution CSO(Crystal Sound OLED), Source : LG Display>

In addition, LG Display will showcase its 65-inch UHDCSO(Crystal Sound OLED) with a new function of display producing sound and 55-inch FHD transparent display making natural and transparent screen, which can show at a glance future displays that are being developed by LG Display.

LG Display applies in-TOUCH technology with a touch sensor embedded in panel to 24-inch monitor as well, while providing differentiated values to the IT market through its large and high-resolution displays. in-TOUCH technology doesn’t need Touch Cover Glass, so it features not only a light and excellent touch function but also a more sophisticated design by reducing the thickness of panels and bezel.

LG Display will also unveil state-of-the-art IT products such as the world’s largest 37.5-inch 21:9 curved monitor that maximizes immersion and 31.5-inch 8K monitor with high-resolution like reality.

<LG Display’s 12.3-inch automotive front display (Down), Transparent(Up), Source : LG Display>

LG Display suggests the future of automobiles, with its sophisticated design and excellent resolution in the rapidly growing automotive display field. By featuring multi-layers of 12.3-inch front display and transparent display, LG’s automotive display provides a sense of three-dimensions similar to existing analog Cluster. Also, LG Display will prepare a display booth for visitors to experience various displays in car such as mirror display that can replace Room Mirror due to its high reflectivity of more than 75%.

LG Display’s CTO(Chief Technology Officer), Kang, In Byeong said, “LG Display has made the world’s first display’ including IPS and OLED TV, and “LG Display will lead the next-generation display market with its continued technology development”.

Samsung Display, shows advanced product such as stretchable display in SID 2017

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Samsung Display participates in ‘SID 2017’ exhibition hosted by the world-renowned Society for Display Experts ‘SID (The Society for Information Display)’ to show advanced future display products.

Samsung Display will exhibit advanced display products that have never been revealed before, such as a stretchable display and a non-eyewear 3D OLED at the LA Convention Center in Los Angeles on 23rd (local time).

Samsung Display participates in this SID 2017, and is showing the unrivaled display technology leadership and confidence by showing high-tech products and publishing outstanding papers.

Samsung Display unveiled a 9.1 inch stretchable OLED product with stretching screen.  The stretchable display is the next generation display technology that extends the screen flexibly, and it is considered to be the most suitable technology for wearable, Internet (IoT), AI (AI), and car display.

<source : Samsung Display>

Compared to the existing flexible OLEDs that can be deformed in only one direction, such as bending, folding, or rolling a screen, a stretchable OLED can be deformed in more than two directions.  This is a much higher level of implementation difficulty and is often referred to as the end point of flexible display technology in the industry.

The product displayed this time, when the screen is pressed from above, the screen is dented like a rubber balloon, and then returns to its original flat shape.  On the contrary, when pressed from below, the screen stretched up and had the elasticity to recover.  Samsung Display has developed a high level of stretchable technology that maintains the original picture quality while increasing the screen to a depth of up to 12mm when the display is pressed through steady research and development.

In addition, Samsung Display will exhibit ‘non-eyewear 3D OLED’ products. This 5.09-inch product realizes a real-life image that looks a bit different depending on the viewer’s position on the display, and expresses a more realistic 3-D image.

Especially, due to the contrast ratio close to infinity of OLED, it shows more natural stereoscopic image than LCD product. This technology is expected to be utilized in various fields requiring 3D image technology such as 3D pop-up book, 3D game, VR and etc.

 

On the other hand, this exhibition will have booths that enable users to experience the OLED technologies of Samsung Display. Including 3.5-inch size, 858ppi optimized for VR devices, 120Hz for wearable and tablet OLED products for smooth picture quality are exhibited.

In addition, much improved image quality of OLED, HDR (High Dynamic Range) and low power consumption technology can be confirmed.  Samsung Display also offers a ‘Design Innovation’ corner that introduces the development of smartphone display design, a unique flexible OLED technology.

From round OLEDs applied to mobile phones for the first time in the world after the successful production of flexible OLEDs in 2013, to recent full-screen OLEDs with the highest picture quality rating of ‘Excellent A +’ from DisplayMate, an image quality evaluation agency, it is able to show the flexible OLED technology accumulated by Samsung Display at a glance.

In addition, a high-resolution 65-type frameless LCD curved TV that minimizes screen reflections by applying ultra-low reflection POL (polarizer) and achieves 100% color expression power (DCI-P3 standard), 34-inch QHD + (3440X1440) LCD curved monitor with 21: 9 aspect ratio maximizes information transfer efficiency and 27-inch FHD (1920X1080) LCD curved monitor capable of 144 Hz high-speed screen operation are exhibited as a product that embodies innovative technology

Meanwhile, a paper entitled “Extendable Screen with Stretchable OLED Display” of Hong Jong-ho, researcher of Samsung Display Research Institute selected as SID 2017 Distinguished Paper.

Meet Prof. Adachi, the initiator of ‘Thermally Activated Delayed Fluorescence’

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We visited Adachi’s laboratory at Kyushu university that published the TADF (abbr., Thermally Activated Delayed Fluorescence) thesis firstly to ‘Nature’ in 2010. He looked like a naive graduate student rather than a professor.

<Prof. Adachi , source : OLEDNET>

The reason that Prof. Adachi’s showing a full of enthusiasm for the TADF materials is that he convinces it is the best materials to lower manufacturing costs of OLED panel. Luminescence materials used in present are divided like fluorescence materials as 1st generation, and phosphorescence materials as 2nd generation. Fluorescence materials as 1st generation have a cost-effective and a low-efficiency, whereas phosphorescence materials as 2nd generation have both high-efficiency and also high-costs. This is because it utilizes the rare-earth metal, iridium. TADF as 3rd generation which Prof. Adachi has been driving, is as a structure of 1st generation materials and it has the merit of achieving the efficiency of 2nd generation materials.

TADF materials have special features that are theoretically capable of reaching 100% inter-efficiency and being free to plan molecular. It means that TADF can raise external light-efficiency up to 40%, because it is possible to form oriented materials by rod-shaped molecular planning.

About the question of the timing of commercialization of TADF materials, Prof. Adachi said that it is still insufficient to apply to OLED of Galaxy, while it’ll be possible to utilize it for products with somehow low specification from next year. It is especially expected that green or red dopant may be available. However, he also emphasized that it is essential to increase the electron transfer speed by reducing the band gap of T1 and S1 in order to be the ultimate TADF for use in displays. The electron transfer speed is currently around 1μsec, but if its speed goes up to 10-1 ~ 10-2 μsec, the lifetime would be secured due to reducing molecular degradation. He expressed about that it is necessary to actively attend by manufacturers of luminescence materials, because there are no dedicated host materials that can sufficiently demonstrate the efficiency of TADF dopant due to difficulties in developing TADF materials.

He recently put a thesis, deep blue TADF with a color coordinate of (0.148, 0.098) and external light-efficiency of more than 19.2% at German journal Angewandte.

Chinese panel makers BOE and Tianma started small and medium sized AMOLED production, acceleratedly chasing Samsung.

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It is the first time for China to produce Gen6 flexible AMOLED; it is expected that BOE’s mass production not significantly affected by yield due to the tremendous support from the Chinese government will cause such impact on the small and medium-sized AMOLED market where Samsung has monopolized so far.

B7 line, which was built in May 2015 with the investment of approx. 465 yuan, is expectedly used in high-end mobile display in China, with 48K- large monthly capacity based on Gen6. In Dec last year, 45K investment was confirmed in Mianyang’s Gen6 flexible AMOLED production line B11 and mass production is expected to operate in 2019.

<5.5 inch FHDfoldable AMOLED launched at CIDC 2016>

In addition, Tianma successfully lighted up the rigid AMOLED panel manufactured in Gen6 LTPS AMOLED production line in Wuhan for the first time in China on April 20th. Tianma has first built the Gen 4.5 AMOLED pilot line in China as well as Gen 5.5 AMOLED production line in Shanghai for mass producing small-medium AMOLED display.

Also CSOT aims to mass-produce in the fourth quarter of 2018 as the investment in Gen6 rigid and flexible AMOLED production lines at Wuhan’s T4 plant has been proceeding. Visionox plans to additionally expand Kunshan’s Gen5.5 line (V1, presently 4K) phase1 11K and Phase2 15K investment is being proceeded. ROYOLE also invested in the Gen 5.5 flexible AMOLED mass production line, and LOI of the SFA deposition equipment was announced last January. The expected capacity is 15K.

In the Korea-dominated AMOLED market, Chinese panel makers are taking up the market share rapidly through the Chinese government support and their huge domestic market. Lee Choong-hoon (chief analyst) at UBI Research specialized in AMOLED market predicts that by 2021, Chinese AMOLED panel makers will record their second largest shipment volume with approx. 16% of the entire market share via full-fledged shipment from 2018, followed by Korea by 2021 “.

<forecast of AMOLED panel shipment by country>

OLED of Samsung•LG Display, Selected as the Display of the year

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Samsung Display and LG Display announced on the 18th that their technology were recognized as OLED respectively in the Society for Information Display (SID), the world’s largest Display society.

 

According to the two companies, in SID awards, Samsung Display’s quad-edge flexible OLED is selected for ‘DIA, Display Industry Awards’ and LG Display’s 65inch UHD Wallpaper OLED TV panel is selected for ‘Display of the Year’

 

SID awards the prize to promising innovative display products, components, and applications that unveil the future of the global display industry among the products launched last year.

<Samsung Display’s quad-edge flexible OLED, source: Samsung Display>

According to SID, Samsung Display’s quad-edge flexible OLED in Galaxy S7 Edge was the first in the industry to display the top, bottom, left, and right sides of the display in a curved shape, and won the Display Industry Awards for its outstanding technology.

 

This product uses a BM (black matrix) area minimization design technology to further reduce the bezel by 0.2mm, the upper and lower end portions (curvature radius 25R) were finely changed to realize a gentle curved shape. In addition, for the aesthetics and comfortable grip, the left and right edge portions of the panel were subjected to four different curvatures (curvature radius 35R → 9.4R → 5.4R → 3.8R).

For this award, Jeon, Seok-jin, marketing director of Samsung Display mentioned “Samsung Display has introduced differentiated products in the market through the state-of-the-art flexible OLED technology,” and said “We are pleased to continue to lead the display market with quad-edge flexible OLEDs.”

<LG Display’s 65inch UHD Wallpaper OLED panel, source: LG Display>

On the other hand, LG Display’s 65-inch UHD Wallpaper OLED panel, which was selected as the display of the year, was evaluated as an innovative product that not only realizes excellent image quality by adopting OLED technology but also presents new potential of display in terms of application range and design.

 

The OLED TV with this panel has already won numerous awards from the world’s leading media such as ENGAGET and SINET as well as CES 2017, On the 16th, it received 89 points (TV evaluation part) which is the highest point from the consumer report, American consumer media.

 

OLED panel applied to 65inch UHD Wallpaper OLED TV is less than 1mm thick and when it is made in TV set, thickness is less than 3.55mm and weighs only 7.4kg so that it can be brought into close contact with the wall like a frame. In addition, maximizing the design effect increases the immersion feeling when watching TV.

 

Yoon, Soo-Young, managing director of LG Display Research mentioned “LG Display has been innovating differentiated products, technologies and core competencies and providing new value to customers and consumers,” and said “As a company representing the global display industry, we will continue to do our best to lead the next generation of technology.”

2017, Will be the Year of OLED TV?

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On 16th, Consumer Reports, an American consumer magazine rated LG Signature TV W 89 scores in the TV quality category. It was an all-time high, overtaking LG OLED TV(OLED65C7P) that ranked number 1 with 88 scores in the ‘4K TV(Best 4K TVs to Buy Right Now)’ category in April.

 
LG Signature TV W features not only the thinnest display(4mm including a wall-mounted TV stand) by applying OLED panel and specially-designed finishing materials, but also the greatest immersion by eliminating unnecessary factors. Due to that reason, LG Signature TV W won ‘Best of the Best’ and ‘Best TV Product’ awards at CES 2017 and was once acclaimed as ‘a beautiful TV like a work of art’ from Engadget.

<LG Signature TV W, Source : mybroadband>

Meanwhile, LG Ultra OLED TV and Sony OLED TV came in second. Among the 11 TV models from top 1 to 10 selected from Consumer Reports, 10 out of 11 were OLED panel-based TVs, whereas a LCD-based TV was only Sony’s BRAVIA.

 
OLED TV is receiving lots of attention of consumers due to its great picture. In last March, Director Yoon Soo-young of LG Display said at the 3rd OLED Korea Conference hosted by UBI Research that “OLED TV on display has been moved from the corner to the center of the Best Buy LG store”, and OLED TV is becoming the mainstream of the premium TV market. Accordingly, many second movers are joining the trend of OLED TV and have released OLED TVs or announced a plan to release.

 
Toshiba launched 55 and 65-inch OLED TV Regza last march, and German luxury AV brand Loewe lunched its new flagship Bild 9 series, 55 and 65-inch 4K OLED TV on May 1, beginning to release OLED TVs in the premium TV market in earnest.

 
In addition, Sony, which attracted big attention for its OLED TV unveiled for the first time at CES 2017, officially announced on May 8th that they will firstly sell 55 and 65-inch sizes of 4K BRAVIA OLED TV A1E series. Panasonic also announced on May 14th that they will firstly sell EZ900, 950, and 1000 among 4K OLED TV in Japan from June.

<Sony’s 4K BRAVIA OLED TV A1E,  Source : Sony blog>

Meanwhile, Choong Hoon Yi, president of UBI Research(senior analyst) analyzed at the Topic seminar in April that Sony’s OLED TV is expected to sell about 400,000 in 2017. Accordingly, he expected Sony’s OLED TV will have about 27% market share in the OLED TV market and about 38% in 2021.

International TADF Workshop Opening

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<Source : 2nd International TADF Workshop>

The International Workshop on the third generation of light emitting material technology, TADF (Thermally Activated Delayed Fluorescence) technology, which links first-generation fluorescent material technology and second-generation phosphorescent material technology, will be held at Kyushu University from July 19 to 21, 2017

In order to push the LCD, which is now the flagship product of the display market replacing the cathode-ray tube completely in the market, it is necessary to have a high-efficiency, low-cost OLED that can be used in mid/low-priced products. A solution to solve both high efficiency and low cost depends on the commercialization of retarded fluorescent materials.

Currently, the light emitting materials are classified into red, green, and blue host materials and dopant materials of respective colors. Among these materials, red and green use phosphorescent materials that internal efficiency is theoretically 100%, but blue materials still use fluorescent materials that internal efficiency is only 25%. Due to the limit of blue material efficiency, large OLED panels for TV have a structure in which blue layers are laminated twice, so material cost is very high.

TADF is the material that is being developed to overcome the limitations of current OLED emissive materials.

In the International TADF Workshop, headed by Professor Adachi of Kyushu University, who brought TADF technology to the world for the first time, worldwide experts of third-generation OLED lighting material development gather. Professor Adachi implied that the interest in TADF is getting hotter around the world looking from that 3 years later he published a TADF thesis for the first time in 2012 at Kyushu university approximately 120 papers published worldwide in 2015 and there are more than 200 papers published in 2016.

Professor Adachi said that the meaning of the TADF Workshop this time is to discuss with experts about the current TADF reach and future development.

Merck, introducing future-oriented material for the display in SID 2017

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Merck said new display technologies and upcoming projects will be presented at SID Display Week 2017

In addition, Merck will exhibit a broad portfolio of products and services under the theme of ‘The Perfect Pixel – Advanced materials for display and beyond’.

“We are gradually improving not only display technologies but also quality, reliability and service through our close relationship with our clients,” said Michael Heckmeier, General Manager of Display Materials Business at Merck.

He also revealed the future plan, saying “continuous development will further solidify our market position as a leading company. We will provide a better product experience for end-user by developing eco-friendly and efficient production processes. ”

To this end, Merck added, “apart from unrestricted designing, flexibility, or color gamut, contrast and energy efficiency, we can focus on innovative products such as liquid crystal window (LCW) module.”

<OLED Display, source: Merck>

At the SID conference, Merck will present the development status of soluble materials for ink-jet printing.

According to Merck, red and green layers made with ink-jet printing have shown efficiency similar to those made with vacuum deposition technology.
Ink-jet printing approach can realize a large-sized OLED panel bigger than Gen8 with RGB pixel structure; it is developed as a simple layer with high material utilization efficiency, which is cost effective in mass production.

At the OLED Korea Conference, Merck said, “Red shows a 16.4% luminescence efficiency and LT95 2,000h long life expectancy; for green 18.7% and LT95 8,000h; blue 7.5% LT95 500h (based on 1,000cd/m2). He once said that the corporate goal is to develop a fluorescent blue dopant with  luminous efficiency higher than 11%, a phosphorescent deep red dopant improving from 20 cd/A brightness to 80 cd/A and phosphorescent green dopant with improved roll off.”

Sony’s OLED TV, its full-fledged sales operation to start from June 10th

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Sony announced on the 8th May that two models (55” and 65”) of the 4K BRAVIA OLED TV A1E series shown last Jan at CES 2017 will be launched in Japan as from June 10. Sony’s BRAVIA OLED TV is equipped with LG Display’s WRGB OLED, 4K high-definition processor X1 Extreme and acoustic surface technology which directly generates sound with the screen vibrating. A ball park price for 55-inch is 500,000 yen and for 65-inch, 800,000 yen. Sony is also planning to release 77-inch wide TV which will be expectedly launched this autumn.

The CEO of Ichiro Takagi Sony Visual products talked about the OLED TV strategies, saying ” OLED panels as well as premium models using the X1 Extreme will offer the best screen quality, sound and immersive experience”.

The Sony’s OLED TV launch is expected to bring great impact on the premium TV market currently predominated by Samsung Electronics and LG Electronics. LG Electronics, expected to compete directly with Sony, is planning to introduce new OLED TVs at a lower price than last year; the focal point is how Sony’s OLED TV will affect the commercialization of OLED TV and display industry.

In line with it, Mr. Lee, Choong Hoon, the CEO of UBI research has foreseen at the Topic seminar last April held in the conference center of Yeouido JeonKyungYeon Hall on 21st April 2017 that Sony’s OLED TV will account for about 27% of the total OLED TV market with approx. 400,000 sets to be sold in 2017, and 38% of the total OLED TV market with 3.4 million sets in 2021.

<OLED TV market prospect>

Fraunhofer FEP develops OLED microdisplays as high-precision optical fingerprint sensors

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Reporter : Hana Oh(HanaOh@ubiresearch.com)

Fraunhofer FEP has been developing various application-specific OLED microdisplays based on OLED-on-silicon technology successfully for many years. This unique technology enables the high-precision integration of an OLED as light source on a microchip. Moreover this microchip can be designed with further sensor elements, e.g. photodiodes. By this, objects can be illuminated and at the same time the reflected light detected and analyzed. Such microdisplays can be integrated into interactive data eyeglasses as a “bi-directional microdisplay”: the tiny display projects the information for augmented-reality applications whereas the camera function detects the viewing direction – thus the content can be controlled by eye-movements.

The fingerprint sensor uses this bidirectional functionality of light-emission and –detection as well: the finger gets illuminated and the reflected light will be detected and analyzed.

Bernd Richter, deputy division manager for OLED microdisplays and sensors at Fraunhofer FEP explains: “We have used an extra-thin encapsulation for the chip of this fingerprint sensor. Thereby the distance between finger and image sensor has been minimized and the fingerprint can be captured excellently. Thus, an additional imaging optics is not necessary for this application.”

The first prototype has a native resolution of 1600 dpi – this is three times more than typically required by the FBI. This high spatial resolution enables the identification even of smallest sweat pores beside the typical papillary lines, which can be used to increase the security.

One of the most promising applications of this new kind of sensor is the user verification in mobile devices. Because of the particularly high resolution in comparison to the typically used capacitive fingerprint sensors these devices are much less vulnerable to so-called spoofing (the manipulation by “false fingers”).

Another nice side effect is the opportunity for using the active area as a normal display e.g. for branding, displaying logos or notifications.

<High resolution OLED-on-silicon fingerprint sensor, Source: Fraunhofer FEP>

Competitiveness of AMOLED emitting materials companies

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UBI Research analyzed the competitiveness of major 9 emitting materials companies based on their sales figures of 2016, the number of applied or registered patents in Korea, the number of the materials being supplied to the products of display companies, and 2017 forecast revenue. (Source: 2017 AMOLED Emitting Material Market Report, UBI Research)

<Graph of the Analysis on the Competitiveness of Major Emitting Material Companies>

The result showed that the highest competitive company was Doosan. The reason for this is that it has the greatest sales performance and the highest number of manufactured products, and its patent activity is second largest after LG Chemical. Doosan has straightly increased 7 steps, in comparison with the order analyzed last year.

The second highest competitive company is Samsung SDI, followed by UDC. By adopting flexible AMOLED for Galaxy S8 red phosphorescence host, Duksan Neolux has increased 3 steps from the last year to rank number 4.

Expect to hit 1 trillion won in AMOLED emitting material market

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Following the success of Galaxy S Series using AMOLED, Apple’s iPhone has started to use flexible AMOLED as its basic display, resulting in the spike in demand for Chinese smartphone companies’ AMOLED.

At MWC2017, 13 companies showcased AMOLED-based smartphones. The companies whose market share is expanding in China, the world’s biggest smartphone market, such as Huawei, Oppo, Vivo, Xiaomi, and ZTE are active to adopt AMOLED smartphone.

<The Number of AMOLED Smartphone Companies at MWC>

With this market trend, the emitting material market for AMOLED is expected to reach 1 trillion won this year.

Hyun Jun Jang, senior researcher of UBI Research forecast that the emitting material market will reach $960 million in 2017 and increase to $33.6 billion in 2021.

<Emitting Material Market Forecast>

According to Hyun Jun Jang, senior researcher, Apple’s AMOLED emitting material market is expected to account for $560 million among $33.6 billion of total emitting material market, and Korea will capture 70% as it is leading the AMOLED panel market while creating a 23.8 billion-dollar market.