Cathode ray tube apparatus with quadrupole electrode structure

A cathode ray tube apparatus comprising;

• three cathodes linearly arranged with each other in a first direction;
• a first focusing electrode positioned in alignment with the cathode;
• A second focusing electrode positioned on one side of the first focusing electrode remote from the cathode in alignment with the first focusing electrode;
• a quadrupole electrode structure positioned between the first and second focusing electrodes in alignment therewith and including first, second and third quadrupole electrodes, one for each electron beam, each of said quadrupole electrodes including,
• a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and
• a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to the associated electron beam, each of said horizontal and vertical electrode pieces being in platelike form elongated along the respective electron beams;
• and
• power source means for applying a predetermined focusing voltage to both of the first and second focusing electrodes and also for applying a modulating voltage between the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode, said modulating voltage being synchronized with a deflection period.

A cathode ray tube apparatus comprising;

• three cathodes linearly arranged with each other in a first direction for emission of respective electron beams therefrom;
• a focusing electrode having first, second and third apertures defined therein for the passage of the respective electron beams therethrough;
• a quadrupole electrode structure including first, second and third quadrupole electrodes, one for each electron beams, each of said quadrupole electrodes being comprised of a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beam;
• and
• power source means for applying a predetermined voltage to the quadrupole electrode structure, said power source means including a modulating voltage source for generating a modulating voltage synchronized with a deflection period of the electron beams, the modulating voltage generated from the modulating voltage source being a voltage having a parabolic waveform required to correct a deflection aberration of the electron beams, the modulating voltage from the modulating voltage source being applied between the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure, one of the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure being electrically connected with the focusing electrode and the other of the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure being electrically connected with the modulation voltage source.

A cathode ray tube apparatus comprising;

• three cathodes linearly arranged with each other in a first direction for emission of respective electron beams therefrom;
• a focusing electrode having first, second and third apertures defined therein for the passage of the respective electron beams therethrough;
• a quadrupole electrode structure including first, second and third quadrupole electrodes, one for each electron beams, each of said quadrupole electrodes including,
• a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and
• a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beam;
• and
• power source means for applying a predetermined voltage to the quadrupole electrode structure, said power source means including a modulating voltage source for generating a modulating voltage synchronized with a deflection period of the electron beams, the modulating voltage generated from the modulating voltage source being a voltage having a parabolic waveform required to correct a deflection aberration of the electron beams, the modulating voltage from the modulating voltage source being applied between the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure, one of the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure being electrically connected with the focusing electrode and adapted to receive a first modulating voltage from the power source means and the other of the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure being adapted to receive a second modulating voltage from the power source means.

A cathode ray tube apparatus comprising;

• three cathodes linearly arranged with each other in a first direction for emission of respective electron beams therefrom;
• a focusing electrode having first, second and third apertures defined therein for the passage of the respective electron beams therethrough;
• a quadrupole electrode structure including first, second and third quadrupole electrodes, one for each electron beams, each of said quadrupole electrodes including,
• a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and
• a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beam;
• and
• power source means for applying a predetermined voltage to the quadrupole electrode structure, said power source means including a modulating voltage source for generating a modulating voltage synchronized with a deflection period of the electron beams, the modulating voltage generated from the modulating voltage source being a voltage having a parabolic waveform required to correct a deflection aberration of the electron beams, the modulating voltage from the modulating voltage source being applied between the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure, the vertical electrode pieces of the quadrupole electrode structure are electrically connected with the focusing electrode and the horizontal electrode pieces of the same quadrupole electrode structure are applied with the modulating voltage to form a uni-potential focusing lens.

A cathode ray tube apparatus comprising;

• three cathodes linearly arranged with each other in a first direction for emission of respective electron beams therefrom;
• a focusing electrode having first, second and third apertures defined therein for the passage of the respective electron beams therethrough;
• a quadrupole electrode structure including first, second and third quadrupole electrodes, one for each electron beams, each of said quadrupole electrodes including,
• a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and
• a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beam;
• and
• power source means for applying a predetermined voltage to the quadrupole electrode structure, said power source means including a modulating voltage source for generating a modulating voltage synchronized with a deflection period of the electron beams, the modulating voltage generated from the modulating voltage source being a voltage having a parabolic waveform required to correct a deflection aberration of the electron beams, the modulating voltage from the modulating voltage source being applied between the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure, the horizontal electrode pieces of the quadrupole electrode structure are electrically connected with the focusing electrode and adapted to receive the modulating voltage, and the vertical electrode pieces of the quadrupole electrode structure are adapted to receive a predetermined direct current voltage.

A cathode ray tube apparatus comprising;

• three cathodes linearly arranged with each other in a first direction for emission of respective electron beams therefrom;
• a focusing electrode having first, second and third apertures defined therein for the passage of the respective electron beams therethrough;
• a quadrupole electrode structure including first, second and third quadrupole electrodes, one for each electron beams, each of said quadrupole electrodes including,
• a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and
• a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beam;
• and
• power source means for applying a predetermined voltage to the quadrupole electrode structure, said power source means including a modulating voltage source for generating a modulating voltage synchronized with a deflection period of the electron beams, the modulating voltage generated from the modulating voltage source being a voltage having a parabolic waveform required to correct a deflection aberration of the electron beams, the modulating voltage from the modulating voltage source being applied between the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure, the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure are electrically connected with each other through a resistor, and wherein one of the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure is adapted to receive a first direct current voltage and the other of the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure is adapted to receive a second direct current voltage through said resistor, said modulating voltage being applied between the horizontal electrode pieces and the vertical electrode pieces of the quadrupole electrode structure through a capacitor.

A cathode ray tube apparatus comprising;

• three cathodes linearly arranged with each other in a first direction for emission of respective electron beams therefrom;
• a focusing electrode having first, second and third apertures defined therein for the passage of the respective electron beams therethrough;
• a quadrupole electrode structure including first, second and third quadrupole electrodes, one for each electron beams, each of said quadrupole electrodes including,
• a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and
• a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beam;
• and
• power source means for applying a predetermined voltage to the quadrupole electrode structure, the second quadrupole electrode positioned intermediately between the first and third quadrupole electrodes has a shape different from that of any one of the first and third quadrupole electrodes.

A cathode ray tube apparatus comprising:

• three cathodes linearly arranged with each other in a first direction for emission of respective electron beams therefrom;
• a focusing electrode having first, second and third apertures defined therein for the passage of the respective electron beams therethrough, each of the apertures defined in the focusing electrode being of a generally elliptical shape;
• a quadrupole electrode including first, second and third quadrupole electrodes one for each electron beams, each of said quadrupole electrodes including,
• a pair of horizontal electrode pieces spaced a predetermined distance from each other in a second direction perpendicular to the first direction and positioned upwardly and downwardly, respectively, with respect to the associated electron beam, and
• a pair of vertical electrode pieces spaced a predetermined distance from each other in a direction aligned with the first direction and positioned leftwards and rightwards with respect to such associated electron beams;
• and
• power source means for applying a predetermined voltage to the quadrupole electrode structure, each of the generally elliptical apertures in the focusing electrode having a long axis lying in the second direction, and wherein the radius of curvature of each of the apertures in the focusing electrode which are aligned with the first and third quadrupole electrodes is greater than that of the aperture in the focusing electrode which is aligned with the second quadrupole electrode.

A cathode ray tube apparatus comprising:

• at least one cathode;
• a first focusing electrode positioned in alignment with the cathode;
• a second focusing electrode positioned on one side of the first focusing electrode remote from the cathode in alignment with the first focusing electrode;
• a quadrupole electrode structure positioned between the first and second focusing electrodes in alignment therewith and including at least one quadrupole electrode having a horizontal electrode member and a vertical member;
• and
• power source means for applying a predetermined voltage to both of the first and second focusing electrodes and also for applying a modulating voltage between the horizontal electrode member and the vertical electrode member of the quadrupole electrode, said modulating voltage being synchronized with a deflection period, the quadrupole electrode structure, the power source means comprises a high voltage generating circuit for generating an anode voltage, a divider circuit for dividing the anode voltage, a first output terminal from which a first direct current voltage drawn from the divider circuit is extracted, a second output terminal from which a second direct current voltage drawn from the divider circuit through a resistor of high resistance value is extracted, a modulating voltage source for generating the modulating voltage synchronized with the deflection period, and a capacitor connected between the modulating voltage source and the resistor of high resistance value.

A cathode ray tube apparatus comprising:

• at least one cathode;
• a first focusing electrode positioned in alignment with the cathode;
• a second focusing electrode positioned on one side of the first focusing electrode remote from the cathode in alignment with the first focusing electrode;
• a quadrupole electrode structure positioned between the first and second focusing electrodes in alignment therewith and including at least one quadrupole electrode having a horizontal electrode member and a vertical member, one of the horizontal and vertical electrode members of the quadrupole electrode being electrically connected with one of the first and second focusing electrodes;
• and
• power source means for applying a predetermined voltage to both of the first and second focusing electrodes and also for applying a modulating voltage between the horizontal electrode member and the vertical electrode member of the quadrupole electrode, said modulating voltage being synchronized with a deflection period.