Candescent Technologies Corporation

Other

Candescent Intellectual Property Services, Inc.

Canon Kabushiki Kaisha

Sony Corporation

Hewlett-packard Company

Advanced Technology Materials, Inc.

George B Hopple

Theodore S Fahlen

Christopher J Spindt

Bob Lee Mackey

Robert M Duboc

Kollengode S Narayanan

Roger W Barton

Igor L Maslennikov

John D Porter

Michael James Nystrom

Shiyou Pei

William C Fritz

James C Dunphy

Christopher J Curtin

Lawrence S Pan

Colin D Stanners

Donald R Schropp, Jr

John K O'Reilly

Vasil M Chakarov

Jennifer Y Sun

Xueping Xu

John M Macaulay

Ronald L Hansen

Robert G Neimeyer

David R Morris

Alfred S Conte

Steve T Cho

Petre Vatahov

Robert L Marion

Sudhakar Gopalakrishnan

William J Cummings

Ramamoorthy Ramesh

Duane A Haven

David L Morris

Scott Jay Crane

Randolph S Gluck

Jun Liu

Steven T Cho

Tomoo Kosugi

John P Klatt

A method of fabricating a support structure. In one embodiment, the method is comprised of forming a layer of material into the support structure. The layer of material is adapted to be attached onto a substrate surface. The method further comprises treating the layer of material. The present method is further comprised of etching said layer of material. The fabricated support structure is then implementable during assembly of a display device. In one embodiment, the support structure is attached to the substrate surface prior to the forming, treating, and etching of the layer of material. In another embodiment, the support structure is attached to the substrate surface subsequent to the forming, treating, and etching of the layer of material.

Method of patterning wall and phosphor well matrix utilizing glass

A light-emitting device contains getter material () typically distributed in a relatively uniform manner across the device's active light-emitting portion. An electron-emitting device similarly contains getter material (, and) typically distributed relatively uniformly across the active electron-emitting portion of the device.

Light-emitting and electron-emitting devices having getter regions

A flat-panel display is fabricated by a process in which a spacer () having a rough face (or) is positioned between a pair of plate structure (and). When electrons strike the spacer, the roughness in the spacer's face causes the number of secondary electrons that escape the spacer to be reduced, thereby alleviating positive charge buildup on the spacer. As a result, the image produced by the display is improved. The spacer facial roughness can be achieved in various ways such as providing suitable depressions (, or) or/and protuberances (, and) along the spacer's face.

Fabrication of flat-panel display having spacer with rough face for inhibiting secondary electron escape

The present invention provides a spacer assembly which is tailored to provide a secondary electron emission coefficient of approximately 1 for the spacer assembly when the spacer assembly is subjected to flat panel display operating voltages. The present invention further provides a spacer assembly which accomplishes the above achievement and which does not degrade severely when subjected to electron bombardment. The present invention further provides a spacer assembly which accomplishes both of the above-listed achievements and which does not significantly contribute to contamination of the vacuum environment of the flat panel display or be susceptible to contamination that may evolve within the tube. Specifically, in one embodiment, the present invention is comprised of a spacer structure which has a specific secondary electron emission coefficient function associated therewith. The material comprising the spacer structure is tailored to provide a secondary electron emission coefficient of approximately 1 for the spacer assembly when the spacer assembly is subjected to flat panel display operating voltages.

Tailored spacer wall coatings for reduced secondary electron emission

An apparatus for removing contaminants from a display device is disclosed. In one embodiment, an auxiliary chamber is adapted to be coupled to a surface of a display device such that contaminants within the display device can travel from the display device into the auxiliary chamber. A getter is disposed in the auxiliary chamber. The getter is adapted to capture the contaminants once the contaminants travel from the display device into the auxiliary chamber. In other embodiments, the getter is disposed in the border region surrounding the active area of the display.

Apparatus for removing contaminants from a display device

A method of fabricating a support structure. In one embodiment, the method is comprised of providing a mold. The mold is for defining the physical dimension of the support structure. The mold is disposed upon a substrate surface. In one embodiment, the method is further comprised of depositing a powder into the mold. The present method is further comprised of compacting the powder deposited in the mold. The compacting forms the support structure. In one embodiment, the method is further comprised of removing the mold from the substrate surface upon which it is disposed. The removal of the mold exposes the support structure. The fabricated support structure is then implementable during assembly of a display device. In one embodiment, the powder deposited in the mold is a metal powder.

Method of forming powder metal phosphor matrix and gripper structures in wall support

A light-emitting device ( , or ) suitable for a flat-panel CRT display contains a plate ( ), a light-emissive region ( ), a light-blocking region ( ), and a light-reflective layer ( or ). The light-emitting device achieves one or more of the following characteristics by suitably implementing the light-reflective layer or/and providing one or more layers ( , and ) along the light-reflective layer: (a) reduced electron energy loss as electrons pass through the light-reflective layer, (b) gettering along the light-reflective layer, (c) reduced secondary electron emission along the light-reflective layer, (d) reduced electron backscattering along the light-reflective layer, and (e) reduced chemical reactivity along the light-reflective layer.

Light-emitting device having light-reflective layer formed with, or/and adjacent to, material that enhances device performance

A flat-panel display contains a pair of plate structure ( and ) separated by a spacer ( ) having a rough face ( or ). When electrons strike the spacer, the roughness in the spacer's face causes the number of secondary electrons that escape the spacer to be reduced, thereby alleviating positive charge buildup on the spacer. As a result, the image produced by the display is improved. The spacer facial roughness can be achieved in various ways such as depressions ( , or ) or/and protuberances ( , and ). Various techniques are presented for manufacturing the display, including the rough-faced spacer.

Flat-panel display having spacer with rough face for inhibiting secondary electron escape

An apparatus for removing contaminants from a display device using an auxiliary chamber, and a method for attaching the auxiliary chamber to the display device. In one embodiment, an auxiliary chamber is adapted to be coupled to a surface of a display device. The auxiliary chamber is adapted to be coupled to the surface of the display device such that contaminants within the display device can travel from the display device into the auxiliary chamber. The auxiliary chamber further includes a getter which is disposed therein. The getter is adapted to capture the contaminants once the contaminants travel from the display device into the auxiliary chamber. In so doing, the present invention eliminates the need for getter material to be placed within the active area of the display device. As a result, the present invention increases the usable amount of space available within the display device. This extra space can then be utilized by features such as, for example, additional field emitters.

Auxiliary chamber

Methods and structures are provided which support spacer walls in a position which facilitates installation of the spacer walls between a faceplate structure and a backplate structure of a flat panel display. In one embodiment, spacer feet are formed at opposing ends of the spacer wall. These spacer feet can be formed of materials such as ceramic, glass and/or glass frit. The spacer feet support the corresponding spacer wall on the faceplate (or backplate) structure. Tacking electrodes can be provided on the faceplate (or backplate) structure to assert an electrostatic force on the spacer feet, thereby holding the spacer feet in place during installation of the spacer wall. The spacer wall can be mechanically and/or thermally expanded prior to attaching both ends of the spacer wall to the faceplate (or backplate) structure. The spacer wall is then allowed to contract, thereby introducing tension into the spacer wall which tends to straighten any inherent waviness in the spacer wall. Alternatively, spacer clips can be clamped onto opposing ends of a spacer wall to support the spacer wall during installation. The spacer clips can provide electrical connections to face electrodes located on the spacer wall.

Self-standing spacer wall structures and methods of fabricating and installing same

Auxiliary chamber and display device with improved contaminant removal

A spacer (,or,A/,B) situated between a faceplate structure (,) and a backplate structure (,) of a flat panel display is configured to be self standing. In one implementation, a pair of spacer feet (,or,and,or,) are located over the same face surface, or over opposite face surfaces, of a spacer wall (,) near opposite ends of the wall. An edge electrode (,or,) is located over an edge surface of the spacer adjacent to the faceplate structure or the backplate structure. In another implementation, a spacer clip (,A or,B) clamps opposite face surfaces of a spacer wall (,) largely at one end of the wall.

Self-standing spacer wall structures

High voltage compatible spacer coating

Walls for a flat panel display and a method for forming walls for a flat panel display that have improved thermal conductivity and decreased thermal coefficient of resistivity. In one embodiment, walls are fabricated using alumina, molybdenum, and titania. These oxide materials (alumina and titania) are mixed with the a metal oxide and cast so as to form thin sheets of material that are then heated. The heating process reduces the metal oxides to their metallic state. The resulting thin sheets of material are then cut to form walls. This produces walls having a higher thermal conductivity than prior art walls. In addition, the thermal coefficient of resistivity of the resulting material is significantly lower than that of prior art materials used for making walls. A flat panel display having the walls of the present invention does not exhibit non-illuminated regions of the visible display due to wall-related thermal effects.

Thermally conductive spacer materials and spacer attachment methods for thin cathode ray tube

Growing community of inventors

Palo Alto, CA, United States of America

George B Hopple