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IBM Journal of Research and Development

Issue 6 • Date Nov. 1978

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Displaying Results 1 - 20 of 20
  • AC Gas Discharge Panels: Some General Considerations

    Publication Year: 1978, Page(s):589 - 595
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (625 KB)

    This introductory paper attempts to provide some perspective on the key technology issues associated with ac gas panel displays to set the stage for a series of nine technology and physics-oriented papers that follow. It uses the cathode ray tube as a reference for comparison and defines some of the unique technological features of matrix-addressed displays generally and ac gas discharge panels sp... View full abstract»

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  • Single-Cycle Gas Panel Assembly

    Publication Year: 1978, Page(s):596 - 600
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    A single-cycle process has been developed in which the two halves of a gas panel are assembled, sealed, and filled in a continuous, automatically sequenced, controlled-ambient furnace. The entire fabrication operation, including seal, degas, backfill, and tip-off, may be accomplished in a single thermal cycle. During heat-up, the panel parts and furnace chamber are degassed in a programmed cyclic ... View full abstract»

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  • Obtaining Gas Panel Metallization Patterns by Vacuum Deposition Through Rib-supported Mask Structures

    Publication Year: 1978, Page(s):601 - 606
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    Gas discharge display panel metallization patterns have been obtained directly in a single vacuum deposition step through rib-supported mask structures. This approach provides a simple alternative to screening or photoetching. The rib-supported structures were developed to solve problems of fabricating masks containing long and narrow closely spaced apertures, poorly supported cantilever sections,... View full abstract»

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  • E-Beam Evaporated Glass and MgO Layers for Gas Panel Fabrication

    Publication Year: 1978, Page(s):607 - 612
    Cited by:  Papers (2)  |  Patents (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (516 KB)

    An electron-beam evaporation process has been developed that is capable of depositing stable, thick, borosilicate glass films (0.5–50 µm) on various substrates at a rate exceeding 0.5 µm/min. A very low stress of 4–10 ×107 N/m2 in compression was obtained in freshly deposited glass films, and a further reduction below measurable levels of st... View full abstract»

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  • Electrical and Optical Characteristics of Evaporable-Glass-Dielectric AC Gas Display Panels

    Publication Year: 1978, Page(s):613 - 621
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (710 KB)

    This paper presents the characteristics of a prototype gas display panel fabricated with electron-beam deposited dielectric films. It is shown that panels with a 6-µm-thick dielectric layer and a 0.2-µm-thick MgO layer exhibit short stabilization times (15 min), long life (20,000 h), small drift effects (<0.5 V), and adequate brightness (21 cd/m2). The devices have ... View full abstract»

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  • Effect of Reactive Gas Dopants on the MgO Surface in AC Plasma Display Panels

    Publication Year: 1978, Page(s):622 - 625
    Cited by:  Papers (5)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (347 KB)

    Experimental results are presented for the influence of controlled levels of important reactive impurities (N2, O2, H2O, CO2) on the aging characteristics of the operating voltages of ac plasma display panels. Details are also given of a novel method of modifying the electronic properties of MgO surfaces by discharge processing in an oxygen-doped Ne-0.1%... View full abstract»

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  • A Phenomenological Study of AC Gas Panels Fabricated with Vacuum-Deposited Dielectric Layers

    Publication Year: 1978, Page(s):626 - 633
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (542 KB)

    This paper presents the results of an experimental investigation of ac gas display panel parameters. The ignition and extinction voltages were measured for panels filled with Ne-0.1% Ar gas to pressures ranging from 0.75 × 104Pa to 8 × 104Pa (50 torr to 600 torr). The panels were constructed with chamber spacings, d, of 0.56 × 10−2 cm to... View full abstract»

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  • Characterization of Voltage and Charge Transfer in AC Gas Discharge Displays

    Publication Year: 1978, Page(s):634 - 640
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (542 KB)

    New techniques have been applied to the characterization of voltage and charge transfer in ac gas discharge display cells. This paper presents a new method of measuring the voltage transfer curve and several aspects of the operation of the cells which are revealed by these measurements. In the steady sustain region the voltage transfer is nearly equal to the initial gas voltage. Over most of the v... View full abstract»

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  • Numerical Calculation of the Characteristics of an Isolated AC Gas Discharge Display Panel Cell

    Publication Year: 1978, Page(s):641 - 646
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    Device characteristics calculated from a one-dimensional dynamic simulation, incorporating space charge effects, of the gaseous discharge occurring at an isolated cell of an ac gas discharge panel are presented. The theoretical model shows all the qualitative features associated with plasma panels, and the quantitative agreement with experimental data inspires confidence in the general validity of... View full abstract»

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  • Al-Cu Alloy for Gas Panels

    Publication Year: 1978, Page(s):647 - 657
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1022 KB)

    The composition, phase formation, stress, resistivity, and, in particular, the oxidation and corrosion behavior of Cu-Al films with a variety of Cu:Al ratios have been determined. Their relevance to the gas panel is discussed. View full abstract»

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  • Contact Stress and Wear Study for Type Characters

    Publication Year: 1978, Page(s):658 - 667
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (682 KB)

    To ensure the structural integrity of solid print characters subjected to millions of stress cycles, the contact stresses encountered in service must be known. In the present paper various type geometries are explored for their influence on stress distribution. A linear programming method of stress analysis is adopted. Experimental analysis and wear characteristics are considered. View full abstract»

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  • Mechanism of Wear by Ribbon and Paper

    Publication Year: 1978, Page(s):668 - 674
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (771 KB)

    While wear by materials such as ribbon and paper represents a significant and identifiable problem in the business machine industry, it has received little attention in the wear literature. In this paper the results of a study into the nature of the wear processes involved and the various factors which influence them are presented. A significant result of that study is the conclusion that the basi... View full abstract»

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  • Work-hardening of Ferrite Head Surfaces by Wear with Flexible Recording Media

    Publication Year: 1978, Page(s):675 - 680
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (788 KB)

    The ferrite surfaces of rotating magnetic heads were found to have been work-hardened to different degrees depending upon the abrasiveness of the flexible recording media used. For the more abrasive tape, the work-hardening was less than for the less abrasive tape. Associated with the increase in microhardness was decreased signal read-back and increased incidence of surface “pull-outs.... View full abstract»

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  • Electroplated Diamond-Composite Coatings for Abrasive Wear Resistance

    Publication Year: 1978, Page(s):681 - 686
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (551 KB)

    This paper describes electroplated diamond-composite coatings which are capable of attaining wear resistance a number of orders of magnitude greater than conventional materials when subjected to abrasion by paper. The coatings consist of a single layer of diamond particles held in a matrix of electroplated metal. During the course of these studies, many parameters were found to play important role... View full abstract»

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  • Calculations of the Effect of Emitter Compensation on β and fT of Bipolar Devices

    Publication Year: 1978, Page(s):687 - 689
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (291 KB)

    Significant increases in bipolar device β and fT are predicted when emitter compensation is reduced. The prediction was made after accurately calculating all room temperature device parameters with a bipolar device program. The use of empirical concentration-dependent energy gap values allowed the accurate device calculation. View full abstract»

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  • Recent Papers by IBM Authors

    Publication Year: 1978, Page(s):690 - 695
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (510 KB)

    Reprints of the papers listed here may usually be obtained by writing directly to the authors. The authors' IBM divisions are identfied as follows: DPD is the Data Processing Division; DSD, Data Systems Division; FED, Field Engineering Division; FSD, Federal Systems Division; GPD, General Products Division; GSD, General Systems Division, OPD, Office Products Division; RES, Research Division; SCD, ... View full abstract»

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  • Recent IBM Patents

    Publication Year: 1978, Page(s):696 - 697
    IEEE is not the copyright holder of this material | PDF file iconPDF (175 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1978, Page(s):698 - 701
    IEEE is not the copyright holder of this material | PDF file iconPDF (394 KB)
    Freely Available from IEEE
  • Author Index for Papers in Volume 22

    Publication Year: 1978, Page(s):702 - 703
    IEEE is not the copyright holder of this material | PDF file iconPDF (226 KB)
    Freely Available from IEEE
  • Subject Index for Papers in Volume 22

    Publication Year: 1978, Page(s):704 - 706
    IEEE is not the copyright holder of this material | PDF file iconPDF (222 KB)
    Freely Available from IEEE

Aims & Scope

The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Meet Our Editors

Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center