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US 2002/0067119 A1Published application
CRT display matrix that emits ultraviolet light
AssigneeSony Corporation and Sony Electronics Inc.
InventorJohn Friedrich Breuninger
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AssigneeSony Corporation and Sony Electronics Inc.
InventorJohn Friedrich Breuninger
Estimating the term…
An additional phosphor-excitation mechanism improves the light output of a visible-light emitting phosphor. The present invention provides the ability to improve the light output of not only a four-phosphor arrangement, but also for the traditional three-phosphor display or even a two color or monochrome CRT, such as a black-and-white CRT, as well as for multi-color or more than four color displays. One excitation mechanism indirectly excites the visible-light emitting phosphor by first striking a non-visible-light emitting particle (such as an ultraviolet-emitting phosphor) with an electron beam, which then emits non-visible radiation that strikes a visible-light emitting phosphor, thereby activating the visible-light emitting phosphor. The non-visible-light emitting particles can be disposed behind and/or adjacent to the visible-light emitting phosphors. A second mechanism directly excites the visible-light emitting phosphor by directly striking the visible-light emitting phosphor with an electron beam. Thus, the same visible-light emitting phosphor is activated by the first indirect mechanism as well as the second direct mechanism. The result is three different potential excitation modes—first from a direct activation by the electron beam; second from an indirect activation by non-visible radiation output by the non-visible-light emitting particles disposed behind the visible-light emitting phosphors; and third from an indirect activation by non-visible radiation output by the non-visible-light emitting particles disposed adjacent to the visible-light emitting phosphors.
A method for increasing image brightness in a cathode ray tube display comprising:
A method for activating a phosphor stripe in a cathode ray tube comprising:
An apparatus for emitting visible light upon excitation with electrons output from a source of electrons, comprising:
A method for making a particle matrix for use in a cathode ray tube comprising:
A method for making a particle matrix for use in a cathode ray tube comprising:
A method for making a particle matrix for use in a cathode ray tube comprising:
A method for making a particle matrix for use in a cathode ray tube comprising:
A method for making a particle matrix for use in a cathode ray tube comprising:
A method for making a particle matrix for use in a cathode ray tube comprising:
Dependencies are inferred from the claim text.