Light source
First Claim
Patent Images
1. A light source comprising:
- a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said fixed substrate;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate;
a metal back layer disposed on a surface of said phosphor layer which confronts said fixed substrate; and
a spreading electrode disposed on a portion of said fixed substrate which is free of said electron emitter, wherein an electron flow emitted from said electron emitter is spread by an electric field generated by a voltage signal which is applied to said spreading electrode to reduce a surface density of the electron flow applied to said metal back layer to a peak value of at most 50 μ
A/cm2.
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Abstract
A light source has a transparent substrate, a fixed substrate disposed in facing relation to the transparent substrate, at least one electron emitter disposed on the fixed substrate, a phosphor layer disposed on a surface of the transparent substrate which confronts the fixed substrate, and a trajectory deflector for deflecting the trajectory of a pulsed electron flow intermittently emitted from the electron emitter. The pulsed electron flow is deflected by the trajectory deflector to two-dimensionally scan a position of the phosphor layer which is irradiated with the pulsed electron flow for thereby spreading the pulsed electron flow.
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Citations
65 Claims
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1. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said fixed substrate;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate;
a metal back layer disposed on a surface of said phosphor layer which confronts said fixed substrate; and
a spreading electrode disposed on a portion of said fixed substrate which is free of said electron emitter, wherein an electron flow emitted from said electron emitter is spread by an electric field generated by a voltage signal which is applied to said spreading electrode to reduce a surface density of the electron flow applied to said metal back layer to a peak value of at most 50 μ
A/cm2. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said transparent substrate;
a light reflecting film disposed on a surface of said fixed substrate which confronts said transparent substrate;
a phosphor layer disposed on a surface of said light reflecting film which confronts said transparent substrate; and
a spreading electrode disposed on a portion of said transparent substrate which is free of said electron emitter, wherein an electron flow emitted from said electron emitter is spread by an electric field generated by a voltage signal which is applied to said spreading electrode to reduce a surface density of the electron flow applied to said phosphor layer to a peak value of at most 50 μ
A/cm2. - View Dependent Claims (9)
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10. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said fixed substrate;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate;
a metal back layer disposed on a surface of said phosphor layer which confronts said fixed substrate; and
a spreading electrode disposed on a portion of said fixed substrate which is free of said electron emitter, wherein said electron emitter emits an electron flow intermittently, and a pulsed electron flow emitted from said electron emitter is spread by an electric field generated by a voltage signal which is applied to said spreading electrode to reduce a surface density of the pulsed electron flow applied to said metal back layer to a peak value of at most 50 μ
A/cm2. - View Dependent Claims (11)
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12. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said transparent substrate;
a light reflecting film disposed on a surface of said fixed substrate which confronts said transparent substrate;
a phosphor layer disposed on a surface of said light reflecting film which confronts said transparent substrate; and
a spreading electrode disposed on a portion of said transparent substrate which is free of said electron emitter, wherein said electron emitter emits an electron flow intermittently, and a pulsed electron flow emitted from said electron emitter is spread by an electric field generated by a voltage signal which is applied to said spreading electrode to reduce a surface density of the pulsed electron flow applied to said phosphor layer to a peak value of at most 50 μ
A/cm2. - View Dependent Claims (13)
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14. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least two electron emitters disposed on said fixed substrate;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate;
a metal back layer disposed on a surface of said phosphor layer which confronts said fixed substrate; and
a spreading electrode disposed on a portion of said fixed substrate which is free of said electron emitters, wherein said electron emitters emit electron flows intermittently, pulsed electron flows emitted from said electron emitters are spread by an electric field generated by a voltage signal which is applied to said spreading electrode to reduce a surface density of the pulsed electron flow applied to said metal back layer to a peak value of at most 50 μ
A/cm2, andthe pulsed electron flows emitted from said electron emitters irradiate the same area of said metal back layer and are emitted at different times from said electron emitters. - View Dependent Claims (15)
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16. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least two electron emitters disposed on said transparent substrate;
a light reflecting film disposed on a surface of said fixed substrate which confronts said transparent substrate;
a phosphor layer disposed on a surface of said light reflecting film which confronts said transparent substrate; and
a spreading electrode disposed on a portion of said transparent substrate which is free of said electron emitters, wherein said electron emitters emit electron flows intermittently, pulsed electron flows emitted from said electron emitters are spread by an electric field generated by a voltage signal which is applied to said spreading electrode to reduce a surface density of the pulsed electron flow applied to said phosphor layer to a peak value of at most 50 μ
A/cm2, andthe pulsed electron flows emitted from said electron emitters irradiate the same area of said phosphor layer and are emitted at different times from said electron emitters. - View Dependent Claims (17)
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18. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said fixed substrate;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate;
a metal back layer disposed on a surface of said phosphor layer which confronts said fixed substrate; and
a spreading electrode disposed on a portion of said fixed substrate which is free of said electron emitter, wherein said electron emitter emits an electron flow intermittently, electron flow pulses emitted from said electron emitter are spread by an electric field generated by a voltage signal which is applied to said spreading electrode, and each of the electron flow pulses which are applied to said metal back layer has an amount of electrons of at most 1 nC/cm2. - View Dependent Claims (19)
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20. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said transparent substrate;
a light reflecting film disposed on a surface of said fixed substrate which confronts said transparent substrate;
a phosphor layer disposed on a surface of said light reflecting film which confronts said transparent substrate; and
a spreading electrode disposed on a portion of said transparent substrate which is free of said electron emitter, wherein said electron emitter emits an electron flow intermittently, electron flow pulses emitted from said electron emitter are spread by an electric field generated by a voltage signal which is applied to said spreading electrode, and each of the electron flow pulses which are applied to said phosphor layer has an amount of electrons of at most 1 nC/cm2. - View Dependent Claims (21)
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22. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least two electron emitters disposed on said fixed substrate;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate;
a metal back layer disposed on a surface of said phosphor layer which confronts said fixed substrate; and
a spreading electrode disposed on a portion of said fixed substrate which is free of said electron emitters, wherein said electron emitter emits an electron flow intermittently, electron flow pulses emitted from said electron emitter are spread by an electric field generated by a voltage signal which is applied to said spreading electrode, each of the electron flow pulses which are applied to said metal back layer has an amount of electrons of at most 1 nC/cm2, and the electron flow pulses emitted from said electron emitters irradiate the same area of said metal back layer and are emitted at different times from said electron emitters. - View Dependent Claims (23)
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24. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least two electron emitters disposed on said transparent substrate;
a light reflecting film disposed on a surface of said fixed substrate which confronts said transparent substrate;
a phosphor layer disposed on a surface of said light reflecting film which confronts said transparent substrate; and
a spreading electrode disposed on a portion of said transparent substrate which is free of said electron emitters, wherein said electron emitter emits an electron flow intermittently, electron flow pulses emitted from said electron emitter are spread by an electric field generated by a voltage signal which is applied to said spreading electrode, each of the electron flow pulses which are applied to said phosphor layer has an amount of electrons of at most 1 nC/cm2, and the electron flow pulses emitted from said electron emitters irradiate the same area of said phosphor layer and are emitted at different times from said electron emitters. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said fixed substrate;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate; and
a trajectory deflector for deflecting the trajectory of a pulsed electron flow intermittently emitted from said electron emitter, wherein the pulsed electron flow is deflected by said trajectory deflector to two-dimensionally scan a position of said phosphor layer which is irradiated with the pulsed electron flow for thereby spreading the pulsed electron flow. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
a plurality of electron emitters disposed on said fixed substrate in the longitudinal direction along a plurality of columns;
a phosphor layer disposed on a surface of said transparent substrate which confronts said fixed substrate; and
a plurality of spreading electrodes disposed above said fixed substrate in the longitudinal direction along columns adjacent to the columns where said electron emitters are disposed on said fixed substrate, wherein electron flows emitted from said electron emitters are spread in the transverse direction by an electric field generated by a voltage signal which is applied to said spreading electrodes. - View Dependent Claims (51, 52, 53, 54, 55, 56)
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57. A light source comprising:
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a transparent substrate;
a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said fixed substrate;
a phosphor layer; and
a spreading electrode, said transparent substrate having said phosphor layer and said spreading electrode, wherein said transparent substrate comprises an upper plate facing said fixed substrate and at least two side plates interposed between said upper plate and said fixed substrate and is fixedly disposed to cover said electron emitter on said fixed substrate, said transparent substrate has a laminated assembly of said phosphor layer and said spreading electrode formed on internal surfaces of said upper plate and at least two of said side plates, and an electron flow emitted from said electron emitter is spread by an electric field generated by a voltage signal applied to said spreading electrode. - View Dependent Claims (58, 59, 60)
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61. A light source comprising:
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a large fixed substrate;
at least one light emitting tube disposed on said large fixed substrate; and
a light reflecting film formed on a portion of said large fixed substrate which is free of said light emitting tube, said light emitting tube comprising;
a housing having a transparent substrate and a fixed substrate disposed in facing relation to said transparent substrate;
at least one electron emitter disposed on said fixed substrate in said housing;
a phosphor layer; and
a spreading electrode, said transparent substrate having said phosphor layer and said spreading electrode, wherein said transparent substrate comprises an upper plate facing said fixed substrate, and at least two side plates interposed between said upper plate and said fixed substrate, said transparent substrate is fixedly disposed to cover said electron emitter on said fixed substrate, said transparent substrate has a laminated assembly of said phosphor layer and said spreading electrode on internal surfaces of said upper plate and at least said two side plates, and an electron flow emitted from said electron emitter is spread by an electric field generated by a voltage signal applied to said spreading electrode. - View Dependent Claims (62, 63, 64, 65)
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Specification