成果報告書詳細
管理番号20110000000869
タイトル*平成22年度中間年報 省エネルギー・フィルム型超大画面プラズマチューブアレイの超高精細化技術の研究開発
公開日2011/8/5
報告書年度2010 - 2010
委託先名篠田プラズマ株式会社
プロジェクト番号P09015
部署名エネルギー対策推進部
和文要約和文要約等以下本編抜粋:1.研究開発の内容及び成果等 (1)研究の目標 薄型ディスプレイ(FPA)において「デジタルサイネージ」と呼ばれる新市場が立ち上がり、100型を超える超大画面が求められる。これに対し、新しくプラズマチューブアレイ(PTA)を開発した。PDPやLCDなど既存のFPDでは大画面化において電力/重量増大が問題となるが、PTAでは従来の1/2程度の消費電力(150W/m2)で150~200型クラスの超軽量・薄型大画面ディスプレイ製品を実現した。
英文要約Title: Leading Research Projects for Innovative Technology Development for Energy Saving. Research of Ultra-fine Pitch Technology for Energy Saving Film-type Extra-large screen Plasma Tube Array. (FY2002-FY2003) FY2002 Annual Report.
An extra-large screen flat panel display (FPD) market beyond 100 inches diagonal begins to grow up, and new market of a digital-signage is expected. However, screen expansion using conventional display technology, it is very hard to solve the problem of increasing power consumption and weight with screen size expansion. Shinoda Plasma Co. Ltd. had been developing a plasma tube array (called PTA) by sticking emissive tube elements, which had 1 mm of diameter with thin film electrode sheet. Energy saving of half is possible in the extra-large screen displays with PTA. To make use of this PTA technology for the Super High Definition TV at consumer market in the future, an ultra-fine pitch of 0.5 mm plasma tube is necessary. In this study, we were aimed for establishing a basic technique of 0.5 mm plasma tube devices with high luminous efficacy and flexible roll screen, and basic process of 0.5 mm fine glass tube, protective layer, and phosphor layer. In device development, improving luminous efficacy that would reduce in 0.5mm plasma tube was most significant. We tried basic research for both of 0.5 mm tube and 0.8 mm one to find new subjects about luminous efficacy improvement. With the array of 0.8 mm plasma tubes, those were fabricated using fine tuned process for 1.0 mm tube, we observed discharge and RGB emission under the smaller discharge space. By thinning the thickness of the glass tube wall, discharge space was made as wide as possible, and aperture ratio of sub-pixel was kept as large as possible. Therefore, the brightness and the luminous efficacy of the 0.8mm tube became approximately equal to those of 1.0 mm tube. The array of 0.5 mm tubes had been under design and fabrication including the experimental results of 0.8 mm tube. For the electrode film to support the 0.5mm tube and a flexible roll screen TV, by improving the heat-characteristics of the film materials, +- 0.2% of high precision in the electrodes patterning was achieved. In fabrication process development, the fine glass tube with 0.5mm of diameter was necessary for all the other theme in this study. By making fine-tuning with a re-draw method in the 0.5 mm glass tube formation, +-7μm of the diameter precision was accomplished. For the development of the new protective layer, formation materials were investigated. By performing process condition adjustment and analysis, directionality of the improvement of materials was found. For the phosphor layer formation, a new process was devised, and the examination of the principle experimental method was carried out. The research targets of this year were accomplished as above.
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