Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1993-06-15
1995-04-25
Pascal, Robert J.
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
3151693, 3151694, 315366, G09G 310
Patent
active
054102189
ABSTRACT:
A Field Emission Display ("FED") is disclosed having an array of display grids formed within a region of a semiconductor substrate. The array is defined by a number of rows and a number of columns. Further, a multiplicity of field emitter tips are incorporated for driving the array, each of the tips being coupled with a display grid of the array. To select any row of the array, a row select switch is employed. The row select switch is preferably formed outside the region of the substrate. In operation, a row is selected when a row control signal is received by the row select switch. Further, a column select switch for selecting any of said columns is also employed, formed outside the region. In operation, a column is selected when a column control signal is received by the column select switch. Moreover, a plurality of constant current sources, formed outside the region, are provided for generating a constant current to each of the tips. Each of the constant current sources is enabled by the column control switch. Thus, the number of constant current sources is equal to the number of columns. Utilizing this configuration, a first tip drives a first grid of the array after the row select switch and the column select switch associated with the first tip are enabled.
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Bachand William R.
Micron Display Technology Inc.
Pascal Robert J.
Philogene Haissa
Teitelbaum Ozer M. N.
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