Semiconductor Energy Laboratory logoJapan-based Semiconductor Energy Laboratory (SEL) is an R&D IP company founded in 1980. SEL perform R&D in several areas, including transistors and semiconductor devices, materials and devices for OLEDs, LCDs 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.

Company Address: 
243-0036
Kanagawa
Atsugi-shi
398 Hase,
Japan

The latest SEL OLED news:

Semiconductor Energy Laboratory developed a 5,291 PPI CAAC-IGZO OLED display

Semiconductor Energy Laboratory (SEL) has developed a high density OLED display (5,291 PPI) based on its proprietary CAAC-IGZO (C-Axis aligned crystalline In-Ga-Zn-O) backplane. SEL will discuss this new achievement at SID 2019.

We do not have more information, but SEL has shown some high resolution CAAC OLEDs before. In 2014 it demonstrated a 2.8" 2560x1440 (1,058 PPI) WRGB OLED display. If SEL indeed developed a 5,291 PPI OLED display on glass it is very impressive.

SEL shows a 8.3" 8K OLED with 1058 PPI, and a new foldable OLED prototype

Semiconductor Energy Laboratory (SEL) demonstrated two new OLED display prototypes, both based on the company's proprietary CAAC-IGZO (c-axis aligned crystalline In-Ga-Zn-O) backplane material.



SEL 8.3-inch 8K OLED prototype (Dec 2018)

First up is the world's smallest 8K display, a 8.3" OLED (1058 PPI) with a resolution of 7680x4320. The panel is based on a white OLED with color filter architecture.

SEL develops a new Host-Guest system that enables red phosphorescent emitters with 5.4X the lifetime

Researchers from Japan's Semiconductor Energy Laboratory (SEL) developed a novel Host-Guest system that drastically improves the lifetime of OLED emitters. The researchers report that using this system, a deep-red phosphorescent emitter achieved 5.4 times longer the lifetime compared to the same emitter with a conventional system.

The researchers will present the new system at SID DisplayWeek 2018 in May. The new system is not only highly durable, it also satisfies the red chromaticity of the BT.2020 standard.

Will SEL's ExTEF device architecture finally enable an efficient blue OLED?

Researchers from Japan's Semiconductor Energy Laboratory (SEL) developed a new OLED device architecture that enables efficient, long-lasting and low-drive voltage OLEDs, at practical brightness levels.

ExTET process and energy states diagram

The researchers call the new device architecture exciplex-triplet energy transfer, or ExTEF. The image above shows the elementary process and its energy state diagram. To create the emissive layer of the ExTEF, the researcher took a film with an electron-transporting material (ETM) and a hole-transporting material (HTM) and doped it with a phosphorescent dopant. Direct recombination between the electrons at the LUMO level and the hole at the HUMO level forms a charge-transfer excited complex (exciplex) - and the phosphorescent emission occurs via energy transfer from the exciplex to the dopant.

SEL demonstrated its TR-hybrid OLED/RLCD display

In April 2016, Japan's Semiconductor Energy Laboratory (SEL) and Advanced Film Device announced they have developed a hybrid OLED - reflective LCD display, that can switch between an OLED mode (for dark environments) and reflective LCD mode (for sunlight visibility). Such a display could be very power efficient.

SEL TR-Hybrid display, OLED mode photoTR-Hybrid in OLED mode

SEL demonstrated a prototype display at SID 2016, and provided more information. SEL calls these displays TR-Hybrid displays (TR means Transmissive OLED and Reflective LC). To create this display, SEL introduced holes into the reflecting electrodes of a reflective LCD, and the OLED layer beneath transmitted light through these holes in OLED mode.

Japan Display to co-develop next-gen CAAC-IGZO backplane tech with SEL

Japan Display (JDI) announced that it has signed a technology development agreement with Semiconductor Energy Laboratory (SEL) regarding the development of Oxide-semiconductor backplane technology for next-generation displays, including OLED displays.

SEL's backplane technology is called c-axis aligned crystal (CAAC), which has been co-developed with Sharp. CAAC is based on an IGZO thin-film that has a novel crystal structure.

SEL developed a hybrid OLED - reflective LCD display

Researchers from Japan's Semiconductor Energy Laboratory (SEL) and Advanced Film Device developed a display that includes an OLED display on top of a reflective LCD. The idea is that such a display have high visibility in both a dark environment (using the emissive OLED) and a bright one (using the reflective LCD).

This is similar somewhat to transflective LCD displays and can prove to be a smart solution. The researchers say that the same FET layer is used to control both display devices and so results in a low-power device. The researchers will present this new development at SID DisplayWeek next month and hopefully we will bring more information.

Photo reveals SEL's 81" 8K tiled OLED display is not really seamless

Last week Japan's SEL demonstrated an 81" 8K OLED display, built from 36 13.5" flexible OLED panels that have transparent edges on two adjacent sides. The panels are tiled together seamlessly - and this enabled SEL to create the world's largest OLED display ever.

SEL 8K 81'' flexible tiled OLED prototype photo

We now have a photo of the display prototype, as you can see above. While this is an impressive feat, it's quite clear that the display is not seamless and you can say the places where the tiles are connected.

SEL shows a 8.7" FHD touch tri-folded AMOLED prototype

In June 2014, Japan's Semiconductor Energy Laboratory (SEL), in collaboration with Nokia, unveiled new foldable OLED display prototypes - 5.9" 1280x720 (249 PPI) ones, which can be folded in two or in three (these were two different prototypes).

SEL foldable OLED prototype

Last month in Japan SEL unveiled new prototypes. The new panels are bigger at 8.7" and offer a higher resolution (1920x1080, 254 PPI). The new panels are also touch-enabled. And they are still tri-folded like the ones shown in June.

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