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US 7,204,739 B2Granted
Cathode panel for a cold cathode field emission display and cold cathode field emission display, and method of producing cathode panel for a cold cathode field emission display
AssigneeSony Corporation
InventorsYukihiro Kamide, Shinji Kubota, Hiroshi Sata, Kazuo Kikuchi
Life of this patent
Estimating the term…
Abstract
A cathode panel for a cold cathode field emission display, comprising; (a) a plurality of main wirings, (b) a plurality of branch wirings extending from each main wiring, and (c) cold cathode electron emitting portions connected to the branch wirings, wherein a branch wiring connecting a cold cathode electron emitting portion defective in operation and a main wiring is cut off.
Claims44
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- a plurality of main wirings;
- a plurality of branch wirings extending from a main wiring of said plurality of main wirings;
- and
- cold cathode electron emitting portions, one of said cold cathode electron emitting portions being connected to said main wiring through a branch wiring of said plurality of branch wirings,
- the method comprising:
- a step of electrically isolating a cathode electrode for said one of said cold cathode electron emitting portions from said main wiring when said one of said cold cathode electron emitting portions is defective in operation.
3 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to said one of said main wirings, and another one of said second branch wirings being connected to said another one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wiring and to said another one of said first branch wirings, and
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings and to said another one of said second branch wirings,
- the method comprising:
- a step of electrically isolating one of said first and second cold cathode electron emitting portions from said main wirings when both of said first and second cold cathode electron emitting portions are normal in operation.
5 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- branch wirings having a first branch wiring and a second branch wiring, said first and second branch wirings being connected to one of said main wirings;
- and
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said first branch wiring, and
- wherein said second cold cathode electron emitting portion is connected to said second branch wiring,
- the method comprising:
- a step of electrically isolating one of said first and second cold cathode electron emitting portions from said one of said main wirings when both of said first and second cold cathode electron emitting portions are normal in operation.
5 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to said one of said main wirings, and different one of said second branch wirings being connected to a different one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wirings and to said another one of said first branch wirings, and
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings and to said different one of said second branch wirings,
- the method comprising:
- a step of electrically isolating one of said first and second cold cathode electron emitting portions from said main wirings when both of said first and second cold cathode electron emitting portions are normal in operation.
5 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- branch wirings having a first branch wiring and a second branch wiring, said first branch wiring being connected to one of said main wirings, and said second branch wiring being connected to another of said main wirings;
- and
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said first branch wiring, and
- wherein said second cold cathode electron emitting portion is connected to said second branch wiring,
- the method comprising:
- a step of electrically isolating said one of said first and second cold cathode electron emitting portions from said main wirings when both of said first and second cold cathode electron emitting portions are normal in operation.
5 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to said one of said main wirings, and another one of said second branch wirings being connected to a different one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wirings and to said another one of said first branch wirings, and
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings and to said another one of said second branch wirings,
- the method comprising:
- a step of electrically isolating one of said first and second cold cathode electron emitting portions from said main wirings when both of said first and second cold cathode electron emitting portions are normal in operation.
5 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- branch wirings having a first branch wiring and a second branch wiring, said first branch wiring being connected to one of said main wirings and said second branch wiring being connected to another of said main wirings;
- and
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said first branch wiring, and
- wherein said second cold cathode electron emitting portion is connected to said second branch wiring,
- the method comprising:
- a step of electrically isolating one of said first and second cold cathode electron emitting portions from said main wirings when both of said first and second cold cathode electron emitting portions are normal in operation.
5 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to a different one of said main wirings, and another one of said second branch wirings being connected to another different one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wirings and to said another one of said first branch wirings, and
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings and to said another one of said second branch wirings,
- the method comprising:
- a step of electrically isolating one of said first and second cold cathode electron emitting portions from said main wirings when both of said first and second cold cathode electron emitting portions are normal in operation.
5 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to said one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wirings and to said another one of said first branch wirings, and
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings,
- wherein, when said first cold cathode electron emitting portion is defective in operation, the method comprising:
- a step of electrically isolating said first cold cathode electron emitting portion from said main wirings;
- and
- a step of connecting said second cold cathode electron emitting portion to said another one of said main wirings.
7 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- branch wirings having a first branch wirings connected to one of said main wirings;
- and
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said first branch wirings,
- wherein, when said first cold cathode electron emitting portion is defective, in operation, the method comprising:
- a step of electrically isolating said first cold cathode electron emitting portion from said one of said main wirings;
- and
- a step of connecting said second cold cathode electron emitting portion to said one of said main wirings.
6 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to said one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wirings and to said another one of said first branch wirings,
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings,
- wherein, when said first cold cathode electron emitting portion is defective in operation, the method comprising:
- a step of electrically isolating said first cold cathode electron emitting portion from said main wirings;
- and
- a step of connecting said second cold cathode electron emitting portion to a different one of said main wirings.
7 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- branch wirings having a first branch wiring being connected to one of said main wirings;
- and
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said first branch wiring,
- wherein, when said first cold cathode electron emitting portion is defective in operation, the method comprising:
- a step of electrically isolating said first cold cathode electron emitting portion from said main wirings;
- and
- a step of connecting said second cold cathode electron emitting portion to another of said main wirings.
6 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to a different one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wirings and to said another one of said first branch wirings, and
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings,
- wherein, when said first cold cathode electron emitting portion is defective in operation, the method comprising:
- a step of electrically isolating said first cold cathode electron emitting portion from said main wirings;
- and
- a step of connecting said second cold cathode electron emitting portion to said one of said main wirings.
7 more elements
A method for producing a cathode panel for a cold cathode field emission display, the cathode panel including:
- main wirings;
- first branch wirings, one of said first branch wirings being connected to one of said main wirings, and another one of said first branch wirings being connected to another one of said main wirings;
- second branch wirings, one of said second branch wirings being connected to a different one of said main wirings;
- cold cathode electron emitting regions, a cold cathode electron emitting region of said cold cathode electron emitting regions having a first cold cathode electron emitting portion and a second cold cathode electron emitting portion,
- wherein said first cold cathode electron emitting portion is connected to said one of said first branch wirings and to said another one of said first branch wirings, and
- wherein said second cold cathode electron emitting portion is connected to said one of said second branch wirings,
- wherein, when said first cold cathode electron emitting portion is defective in operation, the method comprising:
- a step of electrically isolating said first cold cathode electron emitting portion from said main wirings;
- and
- a step of connecting said second cold cathode electron emitting portion to another different one of said main wirings.
7 more elements
Dependencies are inferred from the claim text.