AVS 46th International Symposium
    Flat Panel Displays Topical Conference Monday Sessions
       Session FP+VT-MoM

Paper FP+VT-MoM5
Pressure Field Detailed Calculations for a New Field Emission Device with Improved Vacuum Features@footnote 1@

Monday, October 25, 1999, 9:40 am, Room 604

Session: Field Emission Displays and Vacuum Packaging Issues
Presenter: F.T. Degasperi, Faculdade de Tecnologia de São Paulo - FATEC/SP - Brazil
Authors: F.T. Degasperi, Faculdade de Tecnologia de São Paulo - FATEC/SP - Brazil
V.P. Mammana, Instituto de Física da Universidade de São Paulo, Brazil
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The vacuum characteristics are an important consideration for field emission devices, mainly because of the high area/volume ratio presented in these devices. Dessorption associated with relatively small conductances can degrade the device performance over its lifetime, if small distances between the cathode and the anode are set. The proposal of a novel geometry for these devices@footnote 1@ seeks superior vacuum conductance, while maintaining a high electric field enhancement factor. It is of great importance to determine the pressure distribution along the emission chamber of the proposed device, since the emission performance is strongly dependent on this pressure. The usual vacuum technology approach considers a vacuum system made up of discrete elements. This approach is very useful, but leads only to the knowledge of the average pressure, and not to the detailed pressure distribution. In this article we calculate the pressure distribution considering the degaseification effect from several surfaces of the device, which allows us to predict its vacuum behaviour in a more realistic situation. @FootnoteText@ @footnote 1@ see "A new field emission device with improved vacuum features".