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Article type: Cover
Pages
Cover1-
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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Article type: Index
Pages
Toc1-
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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Takashi Kawai, Tatsuya Takei, Satoshi Ueda, Toshihiro Katoh, Yukio Mur ...
Article type: Article
Pages
1-6
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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In order to improve the performance of a 40-inch DC PDP (Plasma Display Panel) for a hang-on-a-wall HDTV/Hi-Vision receiver, new panel fablication technologies has been developed. The introduction of photo process was useful for precise patterning which is necessary for stable memory operation. The new process makes it possible to produce a smaller cell pitch of 0.48mm (H) ×0.5mm (V) (1920×1035 cells). Hi-Vision pictures could be reproduced on the new 40-inch DC PDP with a luminance of 150cd/m^2.
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H. Nisimura, Y. Harano, S. Zhang, H. Uchiike
Article type: Article
Pages
7-12
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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For the simplicity of manufacturing process to establish mass production, fundamental of paste MgO are measured. By publication of ac PDP using paste MgO their basic properties are measured.
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K. Yoshida, Y. Harano, H. Uchiike
Article type: Article
Pages
13-18
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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The secondary electron emission characteristics are measured and discussed concerning the properties of MgO and new materials which have transmissivity of ultraviolet rays of 147nm. The fundamental properties were measured for the fabricated panels.
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Koji Totoki, Kiyoshi Igarashi, JeongDuk Ryeom, Shigeo Mikoshiba, Hidey ...
Article type: Article
Pages
19-24
Published: January 22, 1997
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Conventional gray scale expression of AC PDPs utilize the ADS scheme in which a TV field is divided into sub-fields, which are again divided into address-and sustain-discharge periods. In this scheme the maximum light-emission duty factor is limited to 30%, restricting high luminance performance. The paper reports a successful operation of an AC PDP with an Address-while-Display scheme, which allows an extension of the light-emission duty to more than 90%.
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Yasutaka Inanaga, Takashi Hashimoto, Akihiko Iwata, Masaaki Tanaka
Article type: Article
Pages
25-30
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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The development of AC-PDPs aims to extend display sizes and to fine cell size. As many PDPs apply sub-field method and line-scan addressing, it's crucial problem that the addressing periods occupy quite part of one field, especially in Hi-resolution PDPs. The fast addressing technique satisfies with the increment of SFs and the cost down through the reduction of the driving ICs. In this study we discuss that the fast addressing with assistance discharges which provides ions or excited particles and they curtail a statistic time lag of an address discharge. First we explain the phenomenon in which these particles concern the curtailing. Second we estimate some sequences with assistance discharges. As a result, we found that the using self-reset-discharge as an address assistance perform a twice faster addressing than the ordinary sequence with a level dark room contrast ratio.
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Takashi Hashimoto, Yoshikazu Tsunoda, Akihiko Iwata, Masaaki Tanaka
Article type: Article
Pages
31-36
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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In AC-PDPs, the priming pulse is applied to all the cells regardless of the cell operation. It means that luminance in the area displayed in black increases, lowering the dark room contrast ratio. We propose a novel driving method to cut down on the priming pulse, and investigate the time response of luminance in various priming conditions. We found that the time response becomes slow especially in the case of displaying in the small area as a result of the experiments. Finally, we subjectively estimate the image quality controlling the priming condition.
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Takahiro Urakabe, Akihiko Iwata, Masaaki Tanaka
Article type: Article
Pages
37-42
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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PDPs need a recovery sustain circuit in order to change energy in a panel's capacitance with low power. This paper describes the novel recovery sustain circuit with a high recovery rate. The circuit has two coils, which are connected in series and parallel in every charging point. The electric loss is decreased by the sustain pulse with two raising slopes. The authors investigate the influences on the characteristics of a dischange in the AC-PDP with the novel recovery sustain circult. As the result, an electric loss due to the panel's capacitance is reduced to 63% compared with a conventional circuit. Moreover, the number of circuit components is reduced to half in the case of a constant electric loss.
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M. Makino, T. Yoshioka, T. Saito
Article type: Article
Pages
43-48
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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The cell structure of surface discharge AC-PDPs with a long gap between the sustaining electrodes achieves high luminous efficiency. However at the same time, the long gap cell structure caused high firing voltage. Thus driving is difficult. The experimental results of firing voltage with gap length as a parameter disagree with Paschen's scaling law, a well-known relationship between the firing voltage and the product of the gas pressure and the gap length. We thought that this deviation from Paschen's scaling law might result from the non-uniformity of the electric field. To evaluate the influence of this non-uniformity of the electric field, we derived a new governing equation for firing voltage, and calculated the results. The calculated results corresponded to the experimental data qualitatively.
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M. Sawa, S. Otani, H. Mori, H. Uchiike
Article type: Article
Pages
49-54
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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In the present paper, we fabricated the Field Emitter Arrays made of n-type silicon wafers, and those covered with W and Cr. We measured the aging characteristics of field enhancement factor, β, and I-V characteristics. The aging characteristics of field enhancement factor, β, of Si-FEA is decrease with time, and that of W-FEA is stable. The threshould voltage of FEAs covered with metals are lower than that of Si-FEA.
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H. moli, S. Ohtani, M. Sawa, H. Uchiike
Article type: Article
Pages
55-60
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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The trajections of electrons which are emitted from the top of Cone shaped Field Emitter are simulated using Laplace's equation in cylindrical coordinates.
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Kouichi Soneda, Shuji Makimoto, Hiroyuki Koba, Kumio Fukuda
Article type: Article
Pages
61-66
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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With the progress of personal computer in recent years, the requirement for high resolution and high brightness is getting stronger to of CDT (Color Display Tube) design. The invar mask is applied in the high resolution CDT to suppress PD (purity drift) generated by thermal expansion of the shadow mask under the operating condition, resultantly color purity is well maintained. However, when invar mask is applied, another type of PD occurs due to the difference of thermal expansion coefficient between glass panel/frame and invar mask. We have developed a 41cm color display tube improved color-purity based on the structural analysis of a mask frame and a holder.
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Shingo Suzuki, Masafumi Okada, Koichi Toyoda, Shuji Sasada, Hideko Igu ...
Article type: Article
Pages
67-72
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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The sidelight type backlight sysyem has become popular as a light source for LCDs because of thinness, light weight, high luminance, low consumption power and luminance uniformity. Recently the prism films become indispensable material for high luminance LCD backlight system. However that is an obstacle to a low cost price because of using expensive prism films. We have developed the newdesign backlight system without prism films by using waveguide including the function of prism films.
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Takatoshi Onoda, Koutoku Ohmi, Shosaku Tanaka, Hiroshi Kobayashi
Article type: Article
Pages
73-78
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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New driving method using Additional Drive Pulses has been developed to improve the luminance of EL panels. All row lines of the EL panel are driven by a pair of symmetric drive pulses at the same time, after each row line is driven by scanning Push-Pull drive pulses. We have examined this method for 9inch diagonal 640×400 ZnS : Mn thin film EL panels, but the experiment was failure, This is due to the result that all-on mode in row driver IC"s with SCR switch is unreliable. To utilize this driving method, new row driver IC"s, which can be used in all-on mode, have to be developed.
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Tatsuo Nishino, Koutoku Ohmi, Shosaku Tanaka, Hiroshi Kobayashi
Article type: Article
Pages
79-84
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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Several driving method, which are used to reduce power consumption of EL panels, are discussed, Power consumption, which resuls from charge and discharge of capacitive EL panels, is analyzed by using SPICE simulation. The simulated power consumption agrees well with that for ideal model. Assuming EL efficiency, luminance of EL panels can be estimated by simulated dissipated power in the EL cells.
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Atsushi Suzuki, Hisamo Sogawa, Takatoshi Onoda, Koutoku Ohmi, Shosaku ...
Article type: Article
Pages
85-88
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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To achieve gray shades for thin film electroluminescent (EL) displays, a hybrid gray scale technique has been examined. Combination of frame averaging and 4 level amplitude modulation can produce 16 gray levels. It is found that averaged brightness is affected by polarization, which is inherent for EL devices with structure. Effect of polarization on frame averaging technique is also discussed.
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Hisamo Sogawa, Atsushi Suzuki, Takatoshi Onoda, Koutoku Ohmi, Shosaku ...
Article type: Article
Pages
89-92
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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Gray scale produced by sub-frame averaging in active matrix electroluminescent (AMEL) display is described. This gray scale uses changing illumination times in sub-frame. This method is easier than gray scale by amplitude modulation and Frame averaging. We have examined this method using model circuit of an AMEL pixel.
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Article type: Appendix
Pages
App1-
Published: January 22, 1997
Released on J-STAGE: June 23, 2017
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