Black matrix material and methods related thereto
AssigneeMicron Technology, Inc.
InventorRobert T. Rasmussen
Life of this patent
Estimating the term…
Abstract
A black matrix material for increasing resolution and contrast of field emission displays is disclosed. The black matrix material is preferably deposited by electrophoresis in the interstitial regions between phosphor pixels of the faceplate. By this technique, high resolution and/or small surface area field emission displays may be manufactured. The black matrix material does not brown when subjected to the conditions associated with the manufacture of field emission displays, is chemically inert and remains stable under vacuum conditions and electron bombardment. The black matrix material is selected from boron carbide, silicon carbide, tungsten carbide, vanadium carbide and mixtures thereof.
Claims38
A method for manufacturing a faceplate for a field emission display, comprising depositing on at least a portion of the faceplate a black matrix material selected from boron carbide, silicon carbide, titanium carbide, vanadium carbide and mixtures thereof.
A method for depositing a black grille on a faceplate of a field emission display, comprising:
- contacting the faceplate with an electrophoresis solution, wherein the electrophoresis solution comprises a black matrix material selected from boron carbide, silicon carbide, titanium carbide, vanadium carbide and mixtures thereof, and electrophoretically depositing the black matrix material on at least a portion of the faceplate.
A composition for electrophoretically depositing a black grille on a faceplate of a field emission display, comprising a black matrix material selected from boron carbide, silicon carbide, titanium carbide, vanadium carbide and mixtures thereof.
A faceplate for a field emission display, comprising a black matrix material deposited on at least a portion of the faceplate, wherein the black matrix material is selected from boron carbide, silicon carbide, titanium carbide, vanadium carbide and mixtures thereof.
A screen comprising:
- a substrate;
- a conductive layer carried by said substrate and covering a portion of said substrate;
- and
- a cathodoluminescent layer carried by said substrate and overlaying a region of said conductive layer;
- said cathodoluminescent layer including:
- a first region defining a plurality of non-contiguous sub-regions, and a second region interstitial said sub-regions;
- said first region comprising light emissive substance and said second region comprising black matrix material.
A field emission display comprising:
- an extraction grid having a plurality of openings;
- an emitter substrate including a plurality of emitters aligned with said plurality of openings;
- a screen adjacent said extraction grid, said screen comprising:
- a substrate;
- a conductive layer carried by said substrate and covering a portion of said substrate;
- and
- a cathodoluminescent layer carried by said substrate and overlaying a region of said conductive layer;
- said cathodoluminescent layer comprising:
- a first region defining a plurality of non-contiguous sub-regions, and a second region interstitial said subregions;
- said first region comprising light emissive material and said second region comprising black matrix material;
- said sub-regions aligned to respective emitters.
A display device comprising:
- a video signal generator capable of generating an image signal;
- an electronic controller driven by an image signal from said video signal generator, said electronic controller controlling an array of emitter control circuits;
- an emitter substrate including an array of emitters, said emitter control circuits individually coupled to individual emitters;
- an extraction grid having a plurality of openings, said openings aligned with said array of emitters;
- a screen adjacent said extraction grid, said screen comprising:
- a substrate;
- a conductive layer carried by said substrate and covering a portion of said substrate;
- and
- a cathodoluminescent layer carried by said substrate and overlaying a region of said conductive layer;
- said cathodoluminescent layer including:
- a first region defining a plurality of non-contiguous sub-regions, and a second region interstitial said sub-regions;
- said first region comprising phosphor pixels and said second region comprising black matrix material.
Dependencies are inferred from the claim text.