Far-infrared emitting cathode ray tube
AssigneeSamsung Electron Devices Co., Ltd.
InventorHeon-soo Kim
Life of this patent
Estimating the term…
Abstract
A cathode ray tube which emits harmful electromagnetic waves includes far-infrared emitting material which emits far-infrared rays which reduce the harmful effects of electromagnetic waves. The far-infrared emitting cathode ray tube is obtained by including far-infrared emitting material in at least one of a phosphor layer, a black matrix, an outer graphite layer, and a shadow mask. This far-infrared emitting cathode ray tube provides a user favorable work place by reducing the harmful effects of electromagnetic waves.
Claims17
A screen for a cathode ray tube that simultaneously emits far-infrared radiation and produces visible images comprising:
- a panel;
- a black matrix layer including a plurality of stripes disposed on said panel;
- a layer comprising particles of an inorganic oxide having an average diameter of up to 5 .mu.m disposed on said black matrix layer and emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to incident electrons;
- and
- a phosphor layer disposed on said panel between the stripes of said black matrix layer, said phosphor layer emitting visible light having a wavelength in a range from 0.4 .mu.m to 0.7 .mu.m in response to incident electrons.
A screen for a cathode ray tube that simultaneously emits far-infrared radiation and produces visible images comprising:
- a panel;
- a black matrix layer including a plurality of stripes disposed on said panel, said black matrix layer including particles of an inorganic oxide having an average diameter of up to 5 .mu.m and emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to incident electrons;
- and
- a phosphor layer disposed on said panel between the stripes of said black matrix layer, said phosphor layer containing a phosphor emitting visible light having a wavelength in a range from 0.4 .mu.m to 0.7 .mu.m in response to incident electrons.
A screen for a cathode ray tube that simultaneously emits far-infrared radiation and produces visible images comprising:
- a panel;
- a black matrix layer including a plurality of stripes disposed on said panel;
- and
- a phosphor layer disposed on said panel between the stripes of said black matrix layer, said phosphor layer containing a phosphor emitting visible light having a wavelength in a range from 0.4 .mu., to 0.7 .mu.m in response to incident electrons and including particles of an inorganic oxide having an average diameter of between 0.5 .mu.m and 4 .mu.m, a maximum diameter of 8 .mu.m, and emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to incident electrons.
A shadow mask for a cathode ray tube that simultaneously emits far-infrared radiation and produces visible images, said shadow mask having a front surface facing a phosphor layer of the cathode ray tube and a rear surface facing an electron gun of the cathode ray tube, said shadow mask comprising:
- a metal plate having a plurality of apertures for transmitting electrons from an electron gun opposite a rear surface of said metal plate to a phosphor layer of a cathode ray tube including said shadow mask, the phosphor layer being disposed opposite a front surface of said metal plate;
- and
- particles of an inorganic oxide having diameters in a range of 0.5-2 .mu.m in a thickness of about 0.1-10 .mu.m disposed on the front surface of said metal plate, said inorganic oxide emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to electrons incident on the rear surface of said metal plate.
A cathode ray tube that simultaneously emits far-infrared radiation and produces visible images comprising:
- a panel;
- a funnel connected to said panel, said funnel having inner and outer surfaces and including a neck portion;
- and
- a layer about 5 .mu.m thick including a mixture of particles of an inorganic oxide emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to incident thermal energy and graphite disposed on the outer surface of said funnel.
A cathode ray tube that simultaneously emits far-infrared radiation and produces visible images comprising:
- a panel;
- a black matrix layer including a plurality of stripes disposed on said panel;
- a layer comprising particles of an inorganic oxide having an average diameter of up to 5 .mu.m disposed on said black matrix layer and emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to incident electrons;
- and
- a phosphor layer disposed on said panel between the stripes of said black matrix layer, said phosphor layer emitting visible light having a wavelength in a range from 0.4 .mu.m to 0.7 .mu.m in response to incident electrons.
A cathode ray tube that simultaneously emits far-infrared radiation and produces visible images comprising:
- a panel;
- a black matrix layer having a plurality of stripes disposed on said panel, said black matrix layer including particles of an inorganic oxide having an average diameter of up to 5 .mu.m and emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to incident electrons;
- and
- a phosphor layer disposed on said panel between the stripes of said black matrix layer, said phosphor layer containing a phosphor emitting visible light having a wavelength in a range from 0.4 .mu.m to 0.7 .mu.m in response to incident electrons.
A cathode ray tube that simultaneously emits far-infrared radiation and produces visible images comprising:
- a panel;
- a black matrix layer including a plurality of stripes disposed on said panel;
- and
- a phosphor layer disposed on said panel between the stripes of said black matrix layer, said phosphor layer containing a phosphor emitting visible light having a wavelength in a range from 0.4 .mu.m to 0.7 .mu.m in response to incident electrons and including particles of an inorganic oxide having an average diameter of up to 5 .mu.m and emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to incident electrons.
A cathode ray tube including a shadow mask and that simultaneously emits far-infrared radiation and produces visible images, said shadow mask having a front surface facing a phosphor layer of the cathode ray tube and a rear surface facing an electron gun of the cathode ray tube, said shadow mask of said cathode ray tube comprising:
- a metal plate having a plurality of apertures for transmitting electrons from an electron gun opposite a rear surface of said metal plate to a phosphor layer of said cathode ray tube including said shadow mask, the phosphor layer being disposed opposite a front surface of said metal plate and emitting visible light having a wavelength in a range from 0.4 .mu.m to 0.7 .mu.m in response to incident electrons;
- and
- particles of an inorganic oxide having a diameter of 0.5-2 .mu.m in a thickness of about 0.1-10 .mu.m disposed on the front surface of said metal plate, said inorganic oxide emitting far-infrared radiation having a wavelength in a range from 5 .mu.m to 1,000 .mu.m in response to electrons incident on the rear surface of said metal plate.
Dependencies are inferred from the claim text.