Deflection yoke and cathode ray tube device

A device for deflecting an electron beam, comprising:

• a main deflection section defining a first path and being configured to deflect the electron beam traveling along the first path, the main deflection section providing a coarse deflection control of the electron beam, the main deflection section including
• a first main conductive component configured to generate a magnetic field to deflect the electron beam traveling along the first path in a first direction,
• a second main conductive component configured to generate a magnetic field to deflect the electron beam traveling along the first path in a second direction,
• a first auxiliary conductive component, and
• a second auxiliary conductive component;
• and
• a minor deflection section provided adjacent to the main deflection section, the minor deflection section defining a second path that is aligned to the first path and providing a fine deflection control of the electron beam, the minor deflection including
• a first minor conductive component that is coupled to the first auxiliary conductive component and configured to deflect the electron beam along the first direction, and
• a second minor conductive component that is coupled to the second auxiliary conductive component and configured to deflect the electron beam along the second direction,
• wherein the first auxiliary conductive component cooperates with the first minor conductive component to reduce a crosstalk voltage generated in the minor deflection section;
• wherein the first minor conductive component is not coupled to the first major conductive component.

A cathode ray tube, comprising:

• a display surface;
• and
• a deflection assembly including
• a main deflection section having a first main coil and defining a first electron beam path and being configured to control a trajectory of an electron beam 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 connected to the first main coil, and
• a minor deflection section provided adjacent to the main deflection section, the minor deflection section having a first minor coil that is coupled to the first auxiliary coil and defining a second electron beam path that is aligned to the first electron beam path, the minor deflection section cooperating with the main deflection section to control the trajectory of the electron beam.

A device used for displaying images, comprising:

• a housing having an opening;
• and
• a cathode ray tube provided within the housing and having a display surface, the display surface aligned to the opening of the housing, the cathode ray tube including
• a main deflection section having a first main coil and defining a first electron path and being configured to control a trajectory of an electron traveling along the first electron path, the main deflection section including a first auxiliary coil provided proximate 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 electron path, the minor deflection section cooperating with the main deflection section to control the trajectory of the electron,
• wherein inductances of the first auxiliary and minor coils are set to satisfy the following condition, 0.005≦La1/Lm1≦0.7, where La1 denotes the inductance of the first auxiliary coil and Lm1 denotes the inductance of the first minor coil.

An electron beam trajectory controlling device, comprising:

• a main deflection section having a main core, a main horizontal coil, a main vertical coil, a first auxiliary horizontal coil, and a first auxiliary vertical coil, the main deflection section providing a coarse control of a trajectory of an electron beam from an electron gun;
• and
• a minor deflection section provided between the main deflection section and the electron gun, the minor deflection section having a minor core, a second auxiliary horizontal coil coupled to the first auxiliary horizontal coil and a second auxiliary vertical coil coupled to the first auxiliary vertical coil, the minor deflection section providing a fine control of the trajectory of the electron beam,
• wherein the horizontal coils are configured to control the trajectory of the electron beam along a first direction, and the vertical coils are configured to control the trajectory of the electron beam along a second direction that is orthogonal to the first direction.

An electron beam trajectory controlling device, comprising:

• a main deflection yoke having a main core, a main horizontal coil, a main vertical coil, a first auxiliary horizontal coil, and a first auxiliary vertical coil, the main core defining a first opening, the main deflection yoke being configured to control a trajectory of an electron beam emitted by an electron gun as the electron beam passes through the first opening;
• and
• a minor deflection yoke provided between the main deflection yoke and the electron gun, the minor deflection yoke having a minor core, a second auxiliary horizontal coil coupled to the first auxiliary horizontal coil and a second auxiliary vertical coil coupled to the first auxiliary vertical coil, the minor core defining a second opening aligned to the first opening, the minor deflection yoke being configured to control the trajectory of the electron beam as the electron beam passes through the second opening,
• wherein the horizontal coils are configured to control the trajectory of the electron beam along a first direction, and the vertical coils are configured to control the trajectory of the electron beam along a second direction that is orthogonal to the first direction,
• wherein the main horizontal coil is not coupled to the second auxiliary horizontal coil, and the main vertical coil is not coupled to the second auxiliary vertical coil,
• wherein the first auxiliary horizontal coil generates a first magnetic field and the second auxiliary horizontal coil generates a second magnetic field, the first and second magnetic fields having substantially the same direction, so that a deflection sensibility of the minor deflection yoke is increased,
• wherein the main horizontal coil generates a magnetic field leakage that generates a crosstalk voltage in the second auxiliary horizontal coil, the first auxiliary horizontal coil being configured to generate a reverse crosstalk voltage to at least partially offset the crosstalk voltage generated in the second auxiliary horizontal coil by the magnetic field leakage,
• wherein inductances of the first and second auxiliary horizontal coils satisfy the following condition, 0.005≦Lah1/Lah2≦0.7, where Lah1 denotes the inductance of the first auxiliary horizontal coil and Lah2 denotes the inductance of the second auxiliary horizontal coil.

A device for a display device, comprising:

• a main deflection section having a main core, a main horizontal coil, a main vertical coil, a first auxiliary horizontal coil, and a first auxiliary vertical coil, the main deflection being configured to provide a coarse control of a trajectory of an electron beam from an electron gun as the electron beam passes through the main core, the first auxiliary horizontal coil including first and second horizontal sub-coils wound about portions of the main core, the first auxiliary vertical coil including first and second vertical sub-coils wound about portions of the main core;
• and
• a minor deflection section provided between the main deflection section and the electron gun, the minor deflection section having a minor core, a second auxiliary horizontal coil coupled to the first auxiliary horizontal coil and a second auxiliary vertical coil coupled to the first auxiliary vertical coil, the minor deflection section being configured to provide a fine control of the trajectory of the electron beam as the electron beam passes through the minor core,
• wherein the main horizontal coil is not coupled to the second auxiliary horizontal coil, and the main vertical coil is not coupled to the second auxiliary vertical coil,
• wherein the first auxiliary horizontal coil generates a first magnetic field and the second auxiliary horizontal coil generates a second magnetic field, the first and second magnetic fields having substantially the same direction to increase a deflection sensibility of the minor deflection section,
• wherein the main horizontal coil generates a magnetic field leakage that, in turn, generates a crosstalk voltage in the second auxiliary horizontal coil, the first auxiliary horizontal coil being configured to generate a reverse crosstalk voltage to at least partially offset the crosstalk voltage generated in the second auxiliary horizontal coil by the magnetic field leakage,
• wherein inductances of the first and second auxiliary horizontal coils satisfy the following condition, 0.005≦Lah1/Lah2≦0.7, where Lah1 denotes the inductance of the first auxiliary horizontal coil and Lah2 denotes the inductance of the second auxiliary horizontal coil,
• wherein inductances of the first and second auxiliary vertical coils satisfy the following condition, 0.005≦Lav1/Lah2≦0.7, where Lav1 denotes the inductance of the first auxiliary vertical coil and Lav2 denotes the inductance of the second auxiliary vertical coil.