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Displaying 1-13 of 13 articles from this issue
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Article type: Cover
Pages Cover1-
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (13K) -
Article type: Index
Pages Toc1-
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (49K) -
K. Ikegami, M. Iizuka, M. Nakamura, K. Kudo, K. TanakaArticle type: Article
Session ID: IDY2001-81
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have fabricated hybrid organic light emitting transistors (OLET) combining static induction transistor (SIT) with organic electroluminescence (EL) and examined their optical properties as a display device. Current-voltage and luminance-voltage characteristics were measured in 'normal' and 'inversed' structures. Although EL intensity of inversed device is lower than the normal one, the light shadowing problem by the Al gate electrode was avoided. Improvement of the device characteristics in the inversed hybrid OLET is expected by optimizing the gate electrode, organic layer, etc.View full abstractDownload PDF (653K) -
T. Yoshioka, A. Katayama, K. Tanaka, H. UsuiArticle type: Article
Session ID: IDY2001-82
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe ionization-assisted method was used to prepare vinyl polymer films of tetraphenyl-diaminobiphenyl (TPD). The electron irradiation in the deposition process was effective to enhance the polymerization reaction. The reaction appears to be driven by neutral radicals produced by the electron irradiation. The polymerization was also enhanced by increasing the substrate temperature during the deposition, and by post-annealing in vaccum. At an appropriate condition, the average molecular weight of 2.2×10^4 was obtained at the yield of 91%. The polymerized film of TPD-ac was applicable as the hole transport layer of organic EL devices. The device performance was improved in accordance with the enhancement of polymerization.View full abstractDownload PDF (804K) -
Y. Hamada, H. Kanno, H. Fujii, T. Tsujioka, H. TakahashiArticle type: Article
Session ID: IDY2001-83
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe propose an emitting assist (EA) dopant system for obtaining organic light-emitting diodes with pure red emission. The EA dopant (rubrene) did not itself emit but assisted the energy transfer from the host (Alq_3) to the red emitting dopant (DCM2). The cell structure used was [indium-tin oxide (ITO)/hole injection layer (20nm, CuPc)/hole transport layer (50nm, NPB)/emitting layer (40nm, Alq_3 + DCM2 (2wt%) + rubrene (5wt%))/MgIn]. A pure red emission (CIE:x=0.64, y=0.36) was obtained in this cell within the luminance range of 100 - 4000 cd/m^2. On the other hand, when the cell was not doped with rubrene, the emission color changed from red to orange as the luminance increased. The EA dopant system is a promising method for obtaining red OLEDs.View full abstractDownload PDF (470K) -
Osamu Yokoyama, Satoru Miyashita, Tatsuya ShimodaArticle type: Article
Session ID: IDY2001-84
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have developed a 2.1-inch diagonal sixteen gray-scale, color light-emitting-polymer (LEP) display. In this display, hole-injection polymer material, and red, green and blue LEP materials were individually deposited into the pixels using an ink-jet printing process. The pixels were driven by low-temperature poly-Si thin-film-transistors (TFTs). Sixteen gray scales were achieved by combining the area ratio gray scale method and the time ratio gray scale method. The newly developed displays showed high image and color quality.View full abstractDownload PDF (816K) -
S. Yano, T. Ishinabe, T. Miyashita, T. Uchida, Y. FujimuraArticle type: Article
Session ID: IDY2001-85
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSRecently, various LCD modes are developed for the purpose of the viewing-angle expansion of LCDs, and these modes have wide viewing angle over 140 degrees in horizontal and vertical directions. However, the wide viewing angle which is over 140 degrees in all directions has not been reported. In this paper, we investigated a wide-view polarizer with extremely low light leakages in all directions. A biaxial film to compensate for changes in optical axis of polarizer was made based on this theory, and a wide-view polarizer was produced by laminating it with PVA-polarizer. It is achieved that the expansion of the viewing angle of LCD was obtained by using this wide-view polarizer.View full abstractDownload PDF (518K) -
Y. Kumagai, T. Uesaka, A. Masaki, T. Toyooka, Y. KoboriArticle type: Article
Session ID: IDY2001-86
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESS"Nisseki LC film" is an optical compensator that consists of liquid crystalline polymer film aligned in twisted-nematic orientation. In this study, the advantages of "Nisseki LC film" were examined by comparing the optical performance of reflective NW-STN-LCDs using a "Nisseki LC film" and a polycarbonate film. It has been confirmed that optimization of the twist angle as well as the retardation of the "Nisseki LC film" realizes high contrast ratio of reflective NW-STN-LCD. Hence the optimizing procedure of the performance of the display becomes more flexible, and it is possible to improve the luminance and the achromaticity while keeping the advantage of the contrast ratio.View full abstractDownload PDF (683K) -
Tetsuhiro Yamazaki, Masato Tokumi, Tetsuji Suzuki, Shintaro Nakagaki, ...Article type: Article
Session ID: IDY2001-87
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSD-ILA is a high-resolution, high-contrast ratio, and high-bright projection system by using 3 D-ILA panels which combines vertical alignment LC and Si-based LCOS. We have developed single-panel D-ILA Hologram Device using a new volume hologram color filter for consumer use. 50 inch rear projection HDTV by adopting the device was already commercialized as ILA Projection TV last year. We explain the concept, process, and basic characteristics of D-ILA Hologram Device in this paper.View full abstractDownload PDF (943K) -
Hideya Murai, Goro Saito, Shinichi Uehara, Tomohisa Goto, Taisaku Naka ...Article type: Article
Session ID: IDY2001-88
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSHolographic PDLC (Polymer Dispersed Liquid Crystal) devices are expected to give reflective LCD with high reflectance, because of no need of color filters or polarizer. To prove usefulness of the HPDLC devices as reflective display, we have fabricated 3-layer multi-color display (4-letter display). Each layer of the HPDLC devices was assembled on thin glass substrates (0.1mm thick) for the depression of the parallax and used holographic diffuser for improving the viewing angle. The HPDLC device showed a white reflective color which was close to the standard white at 0V and showed a multi-color under applied voltages.View full abstractDownload PDF (1040K) -
Shinichi Kita, Tetsuya Miyashita, Tatsuo UchidaArticle type: Article
Session ID: IDY2001-89
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn order to develop a rewritable memory type display media, we have employed reflective type polymer dispersed liquid crystal (PDLC) using Smectic A liquid crystal (SmA LC) with aluminum mirror reflector. We discussed a design rule considering an influence of ambient lights, and we have optimized its device parameter (thickness of the PDLC layer). As the result, high brightness, almost the same as white paper, and high contrast were successfully obtained. In addition, we showed that the rewritable memory type display media using this PDLC had good visibility by printing black characters on a white background.View full abstractDownload PDF (638K) -
Article type: Appendix
Pages App1-
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (83K) -
Article type: Cover
Pages Cover2-
Published: March 02, 2001
Released on J-STAGE: June 23, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (68K)
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