KR960032565A - Cathode ray tube piping - Google Patents

Abstract

The present invention relates to a cathode ray tube apparatus, which comprises a correction coil for correcting distortion of a picture to be drawn on a phosphor screen to be scanned by an electron beam deflected by a deflection device, wherein the correction coils (33, 34) Is provided in the vicinity of the deflection center and is formed at a low inductance of 1 mH or less which is independent of the deflection device electrically and the correction coils 33 and 34 are provided with deflection currents A first inductance element connected to the skew compensation current source provided independently of the main deflection current source and generating substantially the same magnetic field by the current supplied from the skew correction current supply source and having a first inductance element connected to the deflection coil, And an induction maneuvering force for the deflection magnetic field linkage by magnetic coupling of the second inductance element connected to the second inductance element.

Description

Cathode ray tube piping

Since this is a trivial issue, I did not include the contents of the text.

FIG. 4 is a partial cross-sectional view schematically showing the structure of a color water-number correlating apparatus according to an embodiment of the present invention; FIG.

FIG. 5 is a cross-sectional view in a plane orthogonal to the tube axis, showing the deflection device and the correction coil mounted in the color number correlation device shown in FIG.

6A is a circuit diagram showing a relation between a horizontal main coil of the deflection device and a correction coil for correcting the horizontal warping of the correction coil shown in FIG. 5;

Fig. 6B is a circuit diagram showing the relationship between the vertical main coil of the deflecting device and the correction coil correcting vertical warping among the correction coils shown in Fig. 5; Fig.

FIG. 7 is a view for explaining a manufacturing method of the correction coil shown in FIG. 5; FIG.

8A and 8B are diagrams for explaining the relationship between the magnetic field generated by the vertical main deflection coil and the correction magnetic field generated by the correction coil correcting the vertical distortion, and the change in the landing position of the electron beam.

Claims (6)

Generating means for generating an electron beam; Means having a deflection center and including a main deflection coil as a means for generating a magnetic field that deflects the electron beam; A screen which is scanned by a deflected electron beam to emit radiation, and on which an image is formed; A vacuum lid accommodated in the generating means and having an inner surface on which a screen is formed; First supply means for supplying a main deflection current to the main deflection coil of the deflection means; And a compensation coil which is electrically independent of the main deflection coil and which is disposed around the center of the deflection and which has a low inductance of 1 mH or less, And; Wherein the first rectifying and supplying means is provided independently and is provided with second supplying means for supplying a correcting current to the correcting coil of the correcting means so that the correcting coil is capable of correcting the almost- And the center of gravity is generated around the center of the tube. The inductance device according to claim 1, further comprising: a first inductance element connected in series to the main deflection coil and a second inductance element connected in series to the correction coil, and wherein the first and second inductance elements are connected to the main deflection coil and the correction coil Are magnetically coupled in a direction to compensate for an induced maneuver force generated by the flux linkage between the cathode and the cathode. The cathode ray tube apparatus according to claim 2, wherein the first inductance element and the second inductance element are wound on the same magnetic body. The cathode ray tube apparatus according to claim 2, wherein the first inductance element and the second inductance element are wound one or more times on the ring-shaped magnetic body constituting the closed circuit. 3. The electric device according to claim 2, further comprising an electric element which is connected to at least one of the first and second inductance elements and deforms the waveform of the induction maneuver force generated in the one inductance element and includes at least one of a resistor and a capacitor Characterized by a cathode ray tube device. 2. The apparatus according to claim 1, wherein the main deflection coil has a horizontal main deflection coil for generating a magnetic field for deflecting the electron beam in the horizontal direction and a vertical main deflection coil for generating a magnetic field for deflecting the electron beam in the vertical direction, And a horizontal direction distortion correcting coil corresponding to the deflection coil and a vertical direction distortion correcting coil corresponding to the vertical main deflection coil. ※ Note: It is disclosed by the contents of the first application.