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Volume 44 (2007)
- Issue 6 Pages 314-
- Issue 5 Pages 250-
- Issue 4 Pages 176-
- Issue 3 Pages 126-
- Issue 2 Pages 074-
- Issue 1 Pages 002-
Volume 44, Issue 5
Displaying 1-6 of 6 articles from this issue
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Special Review
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Makoto OMODANI2007 Volume 44 Issue 5 Pages 250-256
Published: 2007
Released on J-STAGE: October 15, 2011
JOURNAL FREE ACCESSThe expectations for Electronic Paper can be summarized as readability, compactness, multi-functionality, and resource conservation. Paper-like readability should be accepted as the most important target of Electronic Paper, when we consider that no existing electronic display is as comfortable, to read, as paper. A concept of readable Electronic Paper is proposed, and its expected properties, applications, and various candidate technologies are reviewed. Several experiments to clarify how to realize ideal readability on electronic medium are also introduced. As a conclusion, I suggest that free handling of medium and total view for each page without scrolling are essential factors for getting paper-like readability.View full abstractDownload PDF (703K) -
Hidetoshi "Heeday" DANJO2007 Volume 44 Issue 5 Pages 257-261
Published: 2007
Released on J-STAGE: October 15, 2011
JOURNAL FREE ACCESSFirst, we provide an overview of the Electrophoretic Electronic Paper Technology. Then we focus on recent trends in E Ink through technical development and commercialization activities. The initial product launched in Japan in 2004 was for Electronic Publishing applications, but since then, large-format public signage, watch⁄clock applications and the first million-seller product, a cellphone for emerging markets have appeared. Electronic Publishing applications are spreading to Chinese, European and U.S. markets. On the technology side, advances in response time and the development of Color E Ink displays make it a prime candidate for the reflective display of choice in the era of ubiquitous computing.View full abstractDownload PDF (550K) -
Itsuo TANUMA, Yoshitomo MASUDA, Ryo SAKURAI2007 Volume 44 Issue 5 Pages 262-269
Published: 2007
Released on J-STAGE: October 15, 2011
JOURNAL FREE ACCESSWe have been developing a new type paper-like display which is used electronic powder. Electronic powder is original material we have developed and it has very unique characteristics such as high fluidity like liquid, stable charge ability and many colors. These characteristics succeeded to move powders in the air and show not only white & black images but also color ones. In addition our display doesn't require TFT arrays. This suggests it is fairly easy to develop flexible type display even if a substrate durability for temperature is low. We propose a practical and flexible display which uses PET as a substrate and no TFT arrays. We are also preparing the roll to roll method type manufacture line for a flexible display.View full abstractDownload PDF (1451K) -
Shizuo TOKITO2007 Volume 44 Issue 5 Pages 270-274
Published: 2007
Released on J-STAGE: October 15, 2011
JOURNAL FREE ACCESSFlexible displays based on organic light-emitting diode (OLED) on a plastic film are attracting much attention because of several advantages which are to be very thin, lightweight and flexible or rollable as well as self-emissive. In this article, basic structure and materials for the flexible displays are described. A flexible passive-matrix OLED displays (128 (RGB) ×72 pixels) fabricated by solution processes such as spin-coating and ink-jet printing on a plastic film are demonstrated. Then, for active driving of the OLED displays by organic thin-film transistors (OTFTs), driving voltage of the OTFT is lowered by employing the tantalum oxide gate insulator. Finally, a flexible active-matrix OLED panel (64×64 pixels) is successfully demonstrated by combining the high efficient OLED with the low-voltage driving OTFTs.View full abstractDownload PDF (509K) -
Yoshiaki KAGEYAMA2007 Volume 44 Issue 5 Pages 275-278
Published: 2007
Released on J-STAGE: October 15, 2011
JOURNAL FREE ACCESSFujitsu has launched world first film based color e-paper in 2005 and has been continuing improvement especially on its size, resolution and optical characteristic. In this issue, we would like to introduce principle of cholesteric liquid crystal e-paper, feature of 8-inche and 12-inche panels, and the device which we adapted our e-paper panel.View full abstractDownload PDF (515K)
Original Paper
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Kenji IIHAMA, Mitsuho MAEDA, Noriyuki MORIKAWA2007 Volume 44 Issue 5 Pages 279-285
Published: 2007
Released on J-STAGE: October 15, 2011
JOURNAL FREE ACCESSWater-based ink has been inferior in quality due to water resistance and alkali resistance of prints. In this study, we focused on water-soluble styrene⁄acrylic (St⁄Ac) resins as water-based gravure ink resins. St⁄Ac resins can improve the physical property of prints by changing monomer types and composition of monomers.Water-based gravure inks using St⁄Ac resins were tested. The relationship between the component of St⁄Ac resins and water resistance and alkali resistance of the prints were discussed. It was confirmed that resolubility of resins was opposite to water resistance and alkali resistance of prints. However, it was difficult to anticipate the printing quality from the composition of resin. To appreciate the hydrophobic properties of resins, the logarithm of 1-octanol-water partition coefficient (LogP) of St⁄Ac resins was calculated from the mole fraction of monomers and LogP of monomers. As a result, LogP of St⁄Ac resins correlated with the resolubility of the resin and water resistance and alkali resistance of prints.View full abstractDownload PDF (491K)
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