Deflection yoke and cathode ray tube device
AssigneeHitachi, Ltd.
InventorsSoichi Sakurai, Hiroshi Jitsukata, Nobutaka Okuyama, Katsumi Hirota
Life of this patent
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Abstract
An electron beam trajectory controlling device includes a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path. The main deflection section includes a first auxiliary coil provided proximate the first main coil. A minor deflection section is provided adjacent to the main deflection section and has a first minor coil that is coupled to the first auxiliary coil. The minor deflection section defines a second electron path that is aligned to the first path. The minor deflection section cooperates with the main deflection section to control the trajectory of the electron.
Claims20
An electron beam trajectory controlling device, comprising:
- a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path, the main deflection section including a first auxiliary coil provided proximate the first main coil, the first auxiliary coil not being electrically coupled to the first main coil;
- and
- a minor deflection section provided adjacent to the main deflection section and having a first minor coil that is coupled to the first auxiliary coil, the minor deflection section defining a second electron path that is aligned to the first path, the minor deflection section cooperating with the main deflection section to control the trajectory of the electron,
- wherein the electron beam trajectory controlling device is a deflection yoke assembly or a cathode ray tube, and the first minor coil is not coupled to the first main coil, the first auxiliary coil cooperating with the first minor coil to suppress a crosstalk voltage in the minor deflection section,
- wherein the first auxiliary coil is wound around the main deflection section using a saddle-winding method.
An electron beam trajectory controlling device, comprising:
- a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path, the main deflection section including a first auxiliary coil provided proximate the first main coil, the first auxiliary coil not being electrically coupled to the first main coil;
- and
- a minor deflection section provided adjacent to the main deflection section and having a first minor coil that is coupled to the first auxiliary coil, the minor deflection section defining a second electron path that is aligned to the first path, the minor deflection section cooperating with the main deflection section to control the trajectory of the electron,
- wherein the electron beam trajectory controlling device is a deflection yoke assembly or a cathode ray tube, and the first minor coil is not coupled to the first main coil, the first auxiliary coil cooperating with the first minor coil to suppress a crosstalk voltage in the minor deflection section,
- wherein the main deflection section is provided at a location that is proximate to a fluorescent surface and the minor deflection section is provided at a location that is remote from the fluorescent surface with respect to the main deflection section.
An electron beam trajectory controlling device, comprising:
- a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path, the main deflection section including a first auxiliary coil provided proximate the first main coil, the first auxiliary coil not being electrically coupled to the first main coil;
- a minor deflection section provided adjacent to the main deflection section and having a first minor coil that is coupled to the first auxiliary coil, the minor deflection section defining a second electron path that is aligned to the first path, the minor deflection section cooperating with the main deflection section to control the trajectory of the electron;
- a second main coil provided in the main deflection section, the second main coil and the first main coil together defining the first path and cooperating with each other to control the trajectory of the electron;
- a second auxiliary coil provided in the main deflection section;
- a second minor coil provided in the minor deflection section and cooperating with the first minor coil to control the trajectory of the electron, the second minor coil being coupled to the second auxiliary coil;
- a main core provided in the main deflection section, wherein the first and second auxiliary coils are wound around the main core;
- and
- a minor core provided in the minor deflection section, wherein the first and second minor coils are wound toroidally around the minor core,
- wherein the first main coil and the first minor coil are configured to control the electron trajectory along a first direction, and where the second main coil and the second minor coil are configured to control the electron trajectory along a second direction that is orthogonal to the first direction,
- wherein the deflection direction of the first auxiliary coil is horizontal and the first auxiliary coil is wound around the main core no more than 8 times.
An electron beam trajectory controlling device, comprising:
- a main deflection section having a first main coil and defining a first path and being configured to control a trajectory of an electron traveling along the first path, the main deflection section including a first auxiliary coil provided proximate the first main coil, the first auxiliary coil not being electrically coupled to the first main coil;
- a minor deflection section provided adjacent to the main deflection section and having a first minor coil that is coupled to the first auxiliary coil, the minor deflection section defining a second electron path that is aligned to the first path, the minor deflection section cooperating with the main deflection section to control the trajectory of the electron;
- a second main coil provided in the main deflection section, the second main coil and the first main coil together defining the first path and cooperating with each other to control the trajectory of the electron;
- a second auxiliary coil provided in the main deflection section;
- a second minor coil provided in the minor deflection section and cooperating with the first minor coil to control the trajectory of the electron, the second minor coil being coupled to the second auxiliary coil;
- a main core provided in the main deflection section, wherein the first and second auxiliary coils are wound around the main core;
- and
- a minor core provided in the minor deflection section, wherein the first and second minor coils are wound toroidally around the minor core,
- wherein the second auxiliary coil is configured to control a the electron trajectory along a vertical direction,
- wherein the second auxiliary coil is wound around the main core at least 10 times and no more than 50 times.
Dependencies are inferred from the claim text.