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Innovation Center for Organic Electronics (INOEL), Yamagata University@@@@@@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
1-808-48 Arcadia, Yonezawa, Yamagata 992-0119, Japan@@TELF+81-238-29-0575@@FAXF+81-238-29-0569

Prof. H. Nakada nakada(at)yz.yamagata-u.ac.jp @@Prof. M. Koden koden(at)yz.yamagata-u.ac.jp  (gath should be changed by @.)

Home (Nakada/Furukawa/Yuki/Koden group)     Member     Topics     Technology     Publication     Activity     Contact

 

 

yMain Activityz

 

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yMain Membersz

 

 

 

 

 

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yBookz

OLED Displays and Lighting

OLED Displays and Lighting

 

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yLinkz

 

 

 

 



 

 

Pamphlet (Japanese)@Pamphlet (English)

yDeveloped technologiesz

‘ Flexible OLED on ultra-thin glass

EFlexible OLED on Ultra-thin Glass (2020)

ER2R fabrication of ITO on ultra-thin glass

ER2R fabrication of IZO/Ag electrode on ultra-thin glass

EFlexible OLED lighting panel on ultra-thin glass

EFlexible OLED lighting panel on ultra-thin glass supported with a protecting film.

‘ Flexible on stainless steel foil

Stainless steel foil has several advantages such as temperature resistance, chemical stability, excellent gas barrier property, etc.  However, the surface smoothness has been a big issue for applying to OLED devices.  To solve this issue, Nippon Steel and Sumitomo Metal Corporation Group developed a surface planarization technology of stainless steel foil.

The application technologies of stainless steel foil to flexible organic electronics devices are being developed.

a) Flexible OLED on Stainless Stell Foil (2020)

b) OLED devices on stainless steel foil

c) R2R fabrication of Ag alloy/ITO electrode on stainless steel foil

d) Flexible OLED lighting panel on stainless steel foil

 

‘ Flexible OLED on barrier film

Flexible films for flexible OLED devices very high moisture high barrier because OLED devices are easily degraded by moisture. 

Novel barrier films are being developed.

ERoll-to-Roll (R2R) Fabrication of Barrier Film with Transparent Electrode (2020)

EHigh Temperature Tolerant Barrier Films for Flexible OLEDs (2020)

EImprovement of barrier properties of PEN substrates (2018)

EEffect of wet cleaning of flexible films on barrier properties (2018)

EFlexible OLEDs on PEN barrier films (2016)

 

‘ Barrier layer

ERoll-to-Roll (R2R) Fabrication of Barrier Film with Transparent Electrode (2020)

EBarrier layer by ALD (Atomic Layer Deposition) (2020)

EInorganic Barrier Layers for OLEDs (2020)

EInorganic Barrier Layers by LIA-CVD for OLEDs (2019)

ECVD/ALD/CVD stacking barrier layer (2017)

EStacking barrier layer with by dry and wet processes (2016)

‘ Flexible Encapsulation

Encapsulating technologies for flexible organic electronics devices are being developed, applying to flexible OLED devices.

a) TFE (Thin Film Encapsulation) Technologies for OLEDs (2020)

b) PSA Encapsulating Technologies for OLEDs (2020)
c) High barrier material AEF (Ajinomoto Encapsulation Film) (Collaborating with Ajinomoto Fine-Techno)

d) Laminating encapsulation (Collaborating with Kaneka)

 

‘ Non-ITO Transparent electrode

Although ITO (Indium Tin Oxide) is the most common transparent electrode, it is well known that ITO contains issues in cost because Indium is a rare metal and the fabrication processes of ITO layer on substrates are expensive due to the vacuum and photolithography processes.    Based on such background, various non-ITO transparent electrode technologies have been developed.

We have developed several novel non-ITO transparent electrode technologies shown below.

ENon-ITO Transparent Electrode with Implanted Metal-mesh Structure (2020)

EStacking electrode consisting of silver nanowire and conducting polymer

EConducting polymer


‘ Transparent electrode fabricated by printing and/or R2R technologies

Novel printing technologies of transparent electrodes are being developed, not using photolithography.

² Assisting electrode on ITO

² All printing transparent electrode

² Flexible OLED devices with all printing transparent electrode


‘ Roll-to-roll (R2R) equipment technologies

‘ Flexible Organic Photovoltaic (OPV)

a) Printed Flexible Organic Photovoltaic (OPV) fabricated by Roll-to-roll Processes (2020)


‘ Free Form Electronics (F2E)

a) Free Form Electronics (F2E): Freedom in design by thermo-formed printed electronics (2020)

 

‘ Flexible OLED lighting (collaboration with NEC Lighting)

Prototypes of flexible OLED lighting panels are developed by NEC Lighting, which is one of our collaborating companies.

² Flexible OLED lighting panels on ultra-thin glass. (Collaborating with NEC lighting, Nippon Electric Glass and Nippon Steel & Sumitomo Metal Corporation Group)

² Flexible OLED lighting panels on stainless steel foil. (Collaborating with NEC lighting and Nippon Steel & Sumitomo Metal Corporation Group)

² Flexible OLED lighting panels on barrier film. (Collaborating with NEC lighting, Teijin, The Japan Steel Works, FEBACS, Nippon Steel & Sumitomo Metal Corporation Group and KOBELCO)

² Flexible OLED lighting panels with sheet-type encapsulation. (Collaborating with NEC lighting)

 

‘ Others

a) Package with OLEDs fabricated by printing (IonT) (2020)

b) Optical simulation (2020)

 

 

yBackground technologiesz

‘ OLED Device Fabrications Japanese

‘ Evaluation of OLED Material and Devices Japanese

‘ Evaluation of Barrier Properties Japanese

‘ Roll-to-roll (R2R) and Printing Technologies Japanese

 

 

Back to Home (Nakada/Furukawa/Yuki/Koden Group)

Innovation Center for Organic Electronics (INOEL), Yamagata University
1-808-48 Arcadia, Yonezawa, Yamagata 992-0119, Japan@@TELF+81-238-29-0575@@FAXF+81-238-29-0569

Prof. H. Nakada: nakada(at)yz.yamagata-u.ac.jp @@Prof. M. Koden: koden(at)yz.yamagata-u.ac.jp (gath should be changed by @.)