Electron-emitting device having multi-layer resistor
First Claim
Patent Images
1. A device comprising:
- an electrically conductive emitter electrode;
a lower electrically resistive layer overlying the emitter electrode;
an upper electrically resistive layer overlying, and of different chemical composition than, the lower resistive layer; and
a set of electron-emissive elements overlying the upper resistive layer, each resistive layer extending continuously from a location below each electron-emissive element to a location below each other electron-emissive element.
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Abstract
An electron-emitting device employs a multi-layer resistor (46). A lower layer (48) of the resistor overlies an emitter electrode (42). A set of electron-emissive elements (54) overlie an upper layer (50) of the resistor. Each resistive layer extends continuously from a location below each electron-emissive element to a location below each other electron-emissive element. The two resistive layers are of different chemical composition. The upper resistive layer is typically formed with cermet. The lower resistive layer is typically formed with a silicon-carbon compound.
26 Citations
32 Claims
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1. A device comprising:
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an electrically conductive emitter electrode; a lower electrically resistive layer overlying the emitter electrode; an upper electrically resistive layer overlying, and of different chemical composition than, the lower resistive layer; and a set of electron-emissive elements overlying the upper resistive layer, each resistive layer extending continuously from a location below each electron-emissive element to a location below each other electron-emissive element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device comprising:
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a plurality of laterally separated electrically conductive emitter electrodes; a lower electrically resistive layer overlying the emitter electrodes; an upper electrically resistive layer overlying, and of different chemical composition than, the lower resistive layer; and a plurality of laterally separated sets of electron-emissive elements overlying the upper resistive layer, each set containing multiple electron-emissive elements, each resistive layer extending continuously from a location below each electron-emissive element in each set to a location below each other electron-emissive element in that set. - View Dependent Claims (18, 19, 20)
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21. A device comprising:
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an electrically conductive emitter electrode; a lower electrically resistive layer overlying the emitter electrode; an upper electrically resistive layer overlying, and of different chemical composition than, the lower resistive layer, the upper resistive layer comprising cermet in which metal particles are embedded in ceramic; and an electron-emissive element overlying the upper resistive layer. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification