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A unit pixel drive and field emission characteristics of oxidized porous polysilicon field emission display  

You, Sung-Won (School of Electrical Engineering and Computer Science Kyungpook National University)
Kim, Jin-Eui (School of Electrical Engineering and Computer Science Kyungpook National University)
Choi, Sie-Young (School of Electrical Engineering and Computer Science Kyungpook National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.44, no.8, 2007 , pp. 8-15 More about this Journal
Abstract
In this paper, we fabricated the field emitter display using oxidized porous polysilicon(OPPS). Their field emission characteristics and the brightness were investigated for each pixel. The OPPS emitter was operated to each pixel using passive matrix for application of large panel display. We set up the proper thickness and width of upper electrode. The fine structure of OPPS was analyzed and the field emission characteristics of each pixel were investigated. As a result of field emission characteristics of different upper electrode thickness and width, we confirmed that the most efficient thickness was 2nm/7nm and increased the emission efficiency over the width of 2.5 mm. Even if field emission characteristics of each pixel was a little different but we confirmed the same leakage current and emission current, emission efficiency at each pixel. The leakage current and emission current was decreased according to the time increases but all of each pixel were uniformly decreased. We confirmed that the brightness of each pixel was not different and the brightness of OPPS field emitter was 700 cd/m2 at the Vps=20 V. Accordingly, the patterned OPPS field emitter can be applied to high quality field emission display devices.
Keywords
porous polysilicon; field emitter; field emission display(FED); pixel array; emission efficiency;
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