66.4: Large‐Sized Flexible Lighting with Highly Efficient OLEDs

Ohsawa, Nobuharu; Idojiri, Satoru; Kumakura, Kayo; Obana, Saki; Kobayashi, Yasuhiro; Kataniwa, Masatoshi; Ohide, Takayuki; Ohno, Masakatsu; Adachi, Hiroki; Sakamoto, Naoya; Yatsuzuka, Shota; Aoyama, Teruyoshi; Yamazaki, Shunpei

doi:10.1002/j.2168-0159.2013.tb06372.x

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…Lighting with improved efficiency is expected as a result of the successful development of high‐performance red‐emission material RD‐2. We constructed a prototype of a flexible white OLED lighting using RD‐2 according to the fabrication method described in our previous report . The emission area of the fabricated device was 52.9 mm × 50 mm.…”

Section: Resultsmentioning

confidence: 99%

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Enhancement of emission efficiency in white OLED device by highly efficient narrow spectrum red‐emission material

et al. 2015

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Section: Resultsmentioning

confidence: 99%

“…We constructed a prototype of a flexible white OLED lighting using RD-2 according to the fabrication method described in our previous report. 5 The emission area of the fabricated device was 52.9 mm × 50 mm. On the surface of the device, an outcoupling film was provided to increase the efficiency by approximately 1.2 times.…”

Section: Applications To Lightingmentioning

confidence: 99%

Enhancement of emission efficiency in white OLED device by highly efficient narrow spectrum red‐emission material

et al. 2015

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“…The WOLED has a broad emitting spectrum range and has plenty of different types of materials that can adjust the emitting peak wavelength so as to be a good and green lighting product for human use [8,9]. OLED lighting products are already showing great aesthetic potential as tiles, as soft panels for lighting faces without glare, and as task lights [10].…”

Section: Introductionmentioning

confidence: 99%

A Novel Lighting OLED Panel Design

2016

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A novel OLED (organic light emitting diode) lighting panel, which uses a special layout design, can reduce the photolithography cycles and process costs and is more reliable. It only needs two steps of photolithography cycles, which include an ITO (InSnO compound transparent oxide) pattern and insulator pattern. There is no need for the metal bus pattern of the ordinary design. The OLED device structure is a type of red-green-blue (RGB)-stacked emitting layer that has a good color index and greater adjustability, which improves the performance of the device. This novel design has the same equipment and material requirement compared to the ordinary design, and it is very beneficial in terms of high volume and low-cost production. It uses a hyper driving method because the entire OLED lighting panel is divided into many sub-emitting units; if one of the sub-emitting units is burned out, it has no effect on the adjacent sub-emitting unit, so the reliability is markedly better than the ordinary design.

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“…Organic light-emitting diodes (OLEDs), the most advanced of these technologies, already form the basis for a new generation of commercially viable smart phone displays and large-screen televisions1 and are being developed for flexible lighting and display panels, which cannot be realized with inorganic LED or LCD technology23. Although progress has been rapid regarding many facets of the performance, processing, and development of organic electronics, difficulty obtaining reproducible operational lifetimes for organic devices fabricated with the same structure and materials, even when made in the same laboratory, is a problem that continues to mystify researchers.…”

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confidence: 99%

Influence of vacuum chamber impurities on the lifetime of organic light-emitting diodes

Fujimoto¹,

Suekane

Imanishi

et al. 2016

Sci Rep

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We evaluated the influence of impurities in the vacuum chamber used for the fabrication of organic light-emitting diodes on the lifetime of the fabricated devices and found a correlation between lifetime and the device fabrication time. The contact angle of the ITO substrates stored the chamber under vacuum were used to evaluate chamber cleanliness. Liquid chromatography-mass spectrometry was performed on Si wafers stored in the vacuum chamber before device fabrication to examine the impurities in the chamber. Surprisingly, despite the chamber and evaporation sources being at room temperature, a variety of materials were detected, including previously deposited materials and plasticizers from the vacuum chamber components. We show that the impurities, and not differences in water content, in the chamber were the source of lifetime variations even when the duration of exposure to impurities only varied before and after deposition of the emitter layer. These results suggest that the impurities floating in the vacuum chamber significantly impact lifetime values and reproducibility.

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66.4: Large‐Sized Flexible Lighting with Highly Efficient OLEDs

Abstract: A flexible OLED lighting demonstrating over 130 lm/W by combining a highly efficient OLED and a light outcoupling film has been developed. Furthermore, a prototype 360 × 300‐mm flexible OLED lighting was successfully fabricated by using transfer technology.

Cited by 6 publications

References 16 publications

Enhancement of emission efficiency in white OLED device by highly efficient narrow spectrum red‐emission material

Enhancement of emission efficiency in white OLED device by highly efficient narrow spectrum red‐emission material

A Novel Lighting OLED Panel Design

Influence of vacuum chamber impurities on the lifetime of organic light-emitting diodes

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