Coating processes – Electrical product produced – Electron emissive or suppressive
Patent
1997-02-28
1999-06-22
Bell, Janyce
Coating processes
Electrical product produced
Electron emissive or suppressive
427 64, 427 68, 427162, 427165, 427240, 4273855, 213 13, 445 24, B05D 512
Patent
active
059141506
ABSTRACT:
A technique for creating openings in a polycarbonate film entails providing a liquid chemical formulation that contains polycarbonate material, a liquid that dissolves the polycarbonate, and possibly one or more other constituents. The liquid is typically capable of dissolving the polycarbonate to a concentration of at least 1% at 20.degree. C. and 1 atmosphere. Examples of the liquid include pyridine, a ring-substituted pyridine derivative, pyrrole, a ring-substituted pyrrole derivative, pyrrolidine, a pyrrolidine derivative, chlorobenzene, and cyclohexanone. A liquid film (36A) of the chemical formulation is formed over a substructure (30) and processed to remove the liquid, thereby converting the liquid film into a solid polycarbonate track layer (38). Charged particles (70) are passed through the track layer to form charged-particle tracks (72) at least partway through the layer. Apertures (74) are created through the track layer by a process that entails etching along the tracks. The aperture-containing polycarbonate track layer is typically employed in fabricating a gated electron-emitting device.
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Crane Scott J.
Johnson Anthony W.
Macaulay John M.
Oberg Stephanie J.
Porter Jack D.
Bell Janyce
Candescent Technologies Corporation
Hewlett--Packard Company
Meetin Ronald J.
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