ETNews: SDC is building a QD-OLED TV pilot production line

In February 2018 it was first reported that Samsung Display is developing TV panels based on hybrid quantum-dots and OLED architecture (QD-OLED). Samsung later confirmed it is developing such technology, but with no immediate plans to commercialize it.

Samsung QD-OLED structure (UBI Research)

ETNews now reports that Samsung is now working to establish a pilot 8-Gen line for QD-OLED production. ETNews says that Samsung is collaborating with both Canon Tokki and Kateeva to develop the production equipment - apparently the OLED layers will be evaporated using Canon's machines while the QD filters will be deposited using ink-jet printing equipment made by Kateeva. Samsung aims to finalize the production line by the second half of 2019.

TCL/CSoT plans to build a 11-Gen LCD+OLED TV fab in Shenzhen by 2021

TCL announced that its CSoT Subsidiary (China Star, also known as Shenzhen Huaxing Photoelectric Technology) plans to establish an LCD+OLED TV fab in Shenzhen, China. The new fab will have a monthly capacity of 90,000 substrate - and will produce 65- and 75-inch OLED TVs in addition to 65-, 75- and 75-inch 8K LCDs, all on Oxide-TFT backplanes. The line will begin operation in 2021.

The fab will apparently have two different production lines. The LCD line will be a 11-Gen line (3370x2940 mm) while the OLED Line will use smaller 8.5-Gen substrates (although this is not clear, CSoT may aim to use the 11-Gen substrates for OLED deposition too, perhaps cutting these large substrates before the OLED processing. Total investment in this new fab will be 42.6 billion Yuan (or about $6.7 billion USD).

IHS Market - demand for Oxide TFT backplanes grew 101% in 2017

IHS Markit says that demand for Oxide-TFT backplanes has surged over 100% in 2017, led by both LCDs and AMOLED TVs. The demand is expected to continue its growth although at lower rates and will reach 6.8 million billion sqm in 2020 (up from 1.7 billion sqm in 2017).

Oxide backplane demand, OLED+LCD (2016-2020, IHS)

OLED TV Oxide-TFT backplanes shipments (all from LG Display) grew 106% in 2017 while demand for LCD panels (mostly produced by Sharp) grew 98%, mostly led by Apple's adoption of Oxide-TFT LCDs in its iPads and notebooks.

Solar-Tectic developed a new OLED backplane technology to bridge the gap between IGZO and LTPS

US-based Solar-Tectic has launched a new low-temperature OLED backplane technology that could replace LTPS in future high-end mobile OLED displays and bridge the performance gap between IGZO and LTPS.

Solar-Tectic process, called LT1CS (Low temperature single crystal silicon) is a silicon based technology that creates highly oriented c-axis aligned or "textured" silicon crystals. Solar-Tectic says that the performance of LT1CS backplanes will be higher than IGZO performance. The company says that process is similar to SEL's CAAC-IGZO only based on silicon and not IGZO.

JOLED demonstrates new 4K and flexible AMOLED panels

JOLED (Japan OLED) was established in August 2014 by Japan Display, Sony and Panasonic with an aim to become an OLED medium display (10-30 inch) producer. The company is aiming to start mass production in 2019, although some panels may ship in limited volume earlier.

JOLED 21.6'' 4K medical OLED prototype, Cebit 2017

Last week at Cebit 2017 JOLED demonstrated some of its latest OLED prototypes. In the photo above you can see JOLED's 21.6" 4K (3840x2160, 204 PPI) "medical applications" monitor. JOLED also demonstrated what seems to be the same panel for "consumer" application (they call this private viewing). The whole panel weighs just 500 grams and the color gamut is 130% sRGB.

Researchers develop new EIL and ETL materials for IGZO-based OLEDs

Researchers from the Tokyo Institute of Technology developed new electron injection layer and electron transport layer materials suitable for OLED displays produced on IGZO backplanes. The new materials, based on transparent amorphous oxides, were found to increase the stability of the OLED device.

The new materials are transparent, and chemically stable. The can be adopted for use in web processes - which means that low-cost production processes are possible.

JOLED details their printing process and materials

JOLED (Japan OLED) was established in August 2014 by Japan Display, Sony and Panasonic with an aim to become an OLED medium display (10-30 inch) producer. JOLED is using a printing process which should result in lower cost production (but of lower performance displays) compared to evaporation printing.

JOLED/JDI OLED efficiency improvement chart (Jan 2017)

JOLED's R&D Division Manager spoke at the PF&E China conference a couple of weeks ago, detailing the company's process. JOLED is producing RGB-strip OLED panels using ink-jet printers made by Panasonic and P-OLED materials produced by Sumitomo. The OLED structure is based on Sony's technology and the backplane is a transparent amorphous oxide semiconductor.

The Holst Center developed a Spatial-ALD TFT deposition process

Researchers from the Holst Centre developed a new process to deposit semiconductor layers with better performance and high throughput than PVD-based process. the new process is based on scalable, atmospheric-pressure process spatial-ALD.

Display transistors deposited by sALD image

The Holst Centre used sALD to deposit IGZO backplanes that achieved charge carrier mobilities of 30 to 45 cm2/Vs. The researchers say that similar backplanes deposited with PVD (supttering) achieve about 10 cm2/Vs. The sALD layers also exhibited low off current, switch-on voltages around 0 V and excellent bias stress stability.

JOLED to start 21.6" UHD OLED prototype production in 2017?

JOLED logoThe Nikkei reports that JOLED aims to start producing prototype OLED panels in the second half of 2017. JOLED developed a 21.6" UHD panel and actually aims to start offering the panel in 2017 to medical monitor makers and other commercial applications.

JOLED is using a printing based process and it is estimated that production costs will be 30% to 40% lower than evaporation based processes - but the performance of soluble OLED materials are not yet up to par with evaporation materials. The panels are made on an Oxide-TFT backplane, and the process is optimized for 10 to 30 inch panels. JOLED expects to achieve mass production in FY2018 (April 2018 to March 2019).

Sharp demonstrated an IGZO LCD curved-corner display

Sharp demonstrated a new display prototype called the Corner-R, which uses the company's Free-Form IGZO LCD panel to create a display with curved corners.

Sharp Corner-R prototype photo

From the photo above, it seems like the display is also curved around the edges like Samsung's Edge-type OLEDs, but it may be just a curved glass, I am not sure. This is just a prototype demonstration, though, it's not clear whether Sharp intents to commercialize this display.