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Tem Specimen Preparation for Display Materials of Vacuum Fluorescent Displays

Published online by Cambridge University Press:  02 July 2020

T. Dolukhanyan ,
C. Sung ,
S. Ahn  and
J. Lee
T. Dolukhanyan
Affiliation:
Center for Advanced Materials, Department of Chemical Engineering, University of Massachusetts, Lowell, MA01854
C. Sung
Affiliation:
Center for Advanced Materials, Department of Chemical Engineering, University of Massachusetts, Lowell, MA01854
S. Ahn
Affiliation:
Samsung Display Devices, Suwon, Korea
J. Lee
Affiliation:
Samsung Display Devices, Suwon, Korea
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Extract

Further development of Vacuum Fluorescent Displays (Fig.l) for low cost production and high yield requires investigation of all the components on a submicron scale at various processing stages.

A variety of specimen preparation methods have been used for making different types of high quality cross-sectional and plan-view TEM specimens from:

  1. 1. Initial phosphor materials - ZnCdS powders admixed with conducting powder of ln2O3;

  2. 2. In2O3 mixed ZnCdS phosphor layers of ready-made working VFD;

  3. 3. W - filament cathodes coated with (Ba,Sr,Ca) oxides.

  4. Rapid sharing of results.

Group 1 specimens were made both by direct dispersion of phosphor powder particles on the carbon coated copper grid from acetone diluted powder suspension, and by preparation of cured bulk material from the powder using Gatan G-l epoxy, followed by cutting, grinding-dimpling and final ion milling in Gatan DuoMill 600 (Fig.2).

Type
Specimen Preparation
Information
Microscopy and Microanalysis , Volume 4 , Issue S2: Proceedings: Microscopy & Microanalysis '98, Microscopy Society of America 56th Annual Meeting, Microbeam Analysis Society 32nd Annual Meeting, Atlanta, Georgia July 12-16, 1998 , July 1998 , pp. 870 - 871
Copyright
Copyright © Microscopy Society of America

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References

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3.Anderson, R. and Klepeis, S.J.. MRS Symposium Proceedings, Vol. 480, (1997) p.193.CrossRefGoogle Scholar