Japan-based Semiconductor Energy Laboratory (SEL) is an R&D IP company founded in 1980. SEL performs R&D in several areas, including transistors and semiconductor devices, materials and devices for OLEDs and batteries, display devices and more.
SEL is actively researching and developing flexible OLED technologies. Over the past years, the company announced partnerships with Nokia, Japan Display and Sharp.
In 2019 SEL demonstrated its latest OLED technologies - including foldable and high-density displays.
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Video show's SEL's new flexible CAAS-OS OLED prototypes
A few days ago we reported about SEL's new 13.5" QFHD (3840x1260, 326 PPI) flexible OLED prototype. Now DigInfo published a video showing this new OLED panel and several prototypes showing how it can be used to design curved displays:
SEL's OLEDs use a WRGB (white OLEDs with color filters) architecture and and it uses SEL's CAAS-OS (C-Axis Aligned Crystalline Oxide Semiconductor) substrate.
The Japanese IP high court reversed the JPO's broad claim invalidation on one of UDC's fundamental OLED patents
In May 2012, the Japanese Patent Office (JPO) issued a decision regarding Universal Display's patent #4511024 - they upheld the validity of certain claimed inventions but invalidated the broadest claims. Universal Display appealed to the Japanese High Court and now they announced that the court reversed the JPO's broad claims invalidation.
The matter was remanded back to the JPO for further consideration consistent with the IP High Court’s ruling. The company who initiated the lawsuit in June 2011 was Semiconductor Energy Laboratory (SEL).
SEL unveils a 13.5" QFHD flexible OLED prototype
During the FPD International 2013, SEL unveiled a new 13.5" QFHD (3840x1260, 326 PPI) flexible OLED prototype. This is a WRGB panel (white OLEDs with color filters) and it uses a CAAS-OS (C-Axis Aligned Crystalline Oxide Semiconductor) substrate.
Toshiba was also showing a flexible panel - a 10.2" WUXGA (1920x1200, 223 PPI) WOLED panel on an IGZO backplane. This seems to be the same panel shown at SID 2013 in May 2013. Finally, Yamaga University's Research Center for Organic Electronics (ROEL) unveiled new flexible OLED technologies, including soluble organic-TFT based panels (on PET).
SEL shows a flexible rechargeable Li-Ion battery prototype
Now that flexible display are starting to appear, there are still many obstacles towards bendable devices. One area in which several companies are advancing is flexible batteries. Earlier this month we reported about LG Chem curved and cable batteries, and today we learned that Japan's SEL is also developing similar technology.
SEL are showing a prototype Li-Ion rechargeable battery at the FPD International 2013 event in Japan. SEL explains that they have been developing this technology for a long time but they finally show it now as demand for flexible and wearable devices is starting. The battery on display is 50x40 mm in size and 1.6 mm thick. The capacity is 300 mAh and it can be bent bent to a curvature radius of 40mm. Even after 10,000 bending, the properties do not deteriorate.
OLEDNet - Korean Patents for OLED Takes up over 50% in the World
According to the market research company OLEDNet on 21th, the number of OLED international patents registered, including Korea, the U.S, and Japan, by Korean companies and researchers, such as Samsung SDI and LG Electronics, is 1364 cases out of 2613 cases total, which is 52.2% of entire patents last year.
During the same period, Japan came in the 2nd place with 912 patents, which is 34.9%, followed by the U.S. with 185 cases.
Sorted by companies, Samsung SDI was No. 1 with 748 cases registered, followed by LG Electronics (270 cases), Japan`s Seiko-Epson (175 cases), Japan`s Semiconductor Energy Laboratory (SEL, 109 cases), LG.Philips LCD (96 cases) in order.
