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US 7,402,942 B2Granted
Electron emission device and electron emission display using the same
AssigneeSamsung SDI Co., Ltd.
InventorsSeung-Hyun Lee, Seong-Yeon Hwang
Life of this patent
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Abstract
An electron emission device, and an electron emission display using the electron emission device, includes a substrate, electron emission regions formed on the substrate, driving electrodes formed on the substrate to control electron emissions of the electron emission regions, and a focusing electrode disposed above the driving electrodes and insulated from the driving electrodes, the focusing electrode having openings through which electron beams pass. The focusing electrode includes at least two focusing parts electrically separated from each other and the focusing parts focus the electron beams in different directions.
Claims35
An electron emission device, comprising:
- a substrate;
- a plurality of electron emission regions formed on the substrate;
- a plurality of driving electrodes formed on the substrate to control electron emissions of the electron emission regions;
- and
- a focusing electrode disposed above the driving electrodes and insulated from the driving electrodes, the focusing electrode having openings through which electron beams pass,
- wherein the focusing electrode comprises at least two focusing parts electrically separated from each other and wherein, with respect to each opening, the focusing parts are positioned to focus the electron beams passing though the opening in different directions.
3 more elements
An electron emission display, comprising:
- first and second substrates facing each other;
- a plurality of electron emission regions formed on the first substrate;
- a plurality of driving electrodes formed on the first substrate to control electron emissions of the electron emission regions;
- a focusing electrode disposed above the driving electrodes and insulated from the driving electrodes, the focusing electrode having openings through which electron beams pass;
- red, green and blue phosphor layers formed on the second substrate;
- and
- an anode electrode formed on the phosphor layers,
- wherein the focusing electrode comprises at least two focusing parts electrically separated from each other and wherein, with respect to each opening, the focusing parts are positioned to focus the electron beams passing though the opening in different directions to reach the red, green and blue phosphor layers.
5 more elements
An electron emission device, comprising:
- a substrate;
- a plurality of electron emission regions formed on the substrate;
- a plurality of driving electrodes formed on the substrate to control electron emissions of the electron emission regions;
- and
- a focusing electrode disposed above the driving electrodes and insulated from the driving electrodes, the focusing electrode having openings through which electron beams pass,
- wherein the focusing electrode comprises at least two focusing parts electrically separated from each other and wherein with respect to each opening, the focusing parts form respective electric fields to focus the electron beams passing through the opening, the electric fields being different from each other.
3 more elements
An electron emission display, comprising:
- first and second substrates facing each other;
- a plurality of electron emission regions formed on the first substrate;
- a plurality of driving electrodes formed on the substrate to control electron emissions of the electron emission regions;
- a focusing electrode disposed above the driving electrodes and insulated from the driving electrodes, the focusing electrode having openings through which electron beams pass;
- red, green and blue phosphor layers formed on the second substrate;
- and
- an anode electrode formed on the phosphor layers,
- wherein the focusing electrode comprises at least two focusing parts electrically separated from each other and wherein with respect to each opening, the focusing parts form respective electric fields to focus the electron beams passing through the opening to reach the corresponding red, green and blue phosphor layers, the electric fields being different from each other.
5 more elements
An electron emission device, comprising:
- a substrate to support the electron emission device;
- a plurality of electron emission regions formed on the substrate to emit a plurality of electron beams;
- a plurality of driving electrodes formed on the substrate to control emission of the electron beams from the electron emission regions;
- and
- a focusing electrode disposed above and insulated from the driving electrodes, the focusing electrode comprising:
- an opening through which the electron beams pass;
- a first focusing part to focus the electron beams in a first direction of a plane, and
- a second focusing part electrically separated from the first focusing part to focus the electron beams in a second direction of the plane.
5 more elements
Dependencies are inferred from the claim text.