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OLEDON with Dankook University succeeding in developing next-generation ultra high resolution patterning deposition technology

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Chin Byung-Doo, professor at Dankook University and Hwang Chang-Hoon, professor at Dankook University and CEO of OLEDON announced that they have succeeded in developing evaporation pattern deposition technology which can realize 0.38um shadow distance (SD) at SID 2017.

Mr. Hwang, CEO of OLEDON announced at 2016 IMID Business forum that he succeeded in implementing plane source evaporation and 1.1um shadow distance with 100um-thick shadow mask. At that time, Mr. Hwang said, ‘If we reduce the step height to 3μm, theoretically, we can implement the shadow distance down to 0.38 um, so the OLED panel resolution will be possibly more than 2250ppi.’

At the SID 2017, OLEDON’s solid result of implementing SD 0.38um in application of actual plane source drew great attention from people in relevant industries regarding the possibility of mass production.

Current OLED panel production technology has the limits on implementing the resolution higher than QHD (about 600ppi) for about 3 um thick shadow which causes overlapping micro patterns in the UHD (over 800ppi) AMOLED patterning process to degrade the fine pattern density. Consequently, OLED panels are produced only at QHD level.

If OLEDON’s surface source patterning deposition technology is applied to mass production, the shadow distance can be reduced to 0.38 ~ 0.56um, which can improve the resolution about 8 times higher. In addition, if scale-up development is applied to a large size OLED display production in the future, it is possible to manufacture a micro AMOLED device equipped with super ultra resolution (SUHD) resolution higher than 3300ppi.

<Shadow data from the surface source deposition technology>

Hwang Chang-hoon, CEO of OLEDON said, ‘using the idea of primarily evaporating the organic material and its deposition on the metal surface in the vacuum environment to form organic molecular film and re-evaporate it for the second coating deposition, we have found a condition to minimize the evaporation angle of the organic molecular beam. ”

<The principle of film source presented by Mr. Hwan at the SID>

With the recent focus on display resolution, OLEDON’s research results are expected to bring significant impact on the relevant industry.

Meanwhile, Prof. Hwang Chang-hoon has been developing new deposition technology for 25 years via a deposition specialist company. He holds the original patent of surface source deposition technology (Linear organic device mass production equipment with top-down thermal induction deposition: Registration No. 101206162000).

[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.

 

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.