Miss convergence measuring device of color cathode ray tube

摘要

The present invention relates to an apparatus and a method for measuring misconvergence of a color blind tube, and more particularly, to a method for quantitatively and accurately measuring the convergence of a color cathode ray tube having a dot or stripe-shaped phosphor.;Since the conventional technology emits only red (R) dots and does not emit green (G) and blue (B) dots, the luminance distribution of the red (R) beam becomes discontinuous and the left / The error is generated between the center of the actual (R) beam and the center of the distribution of luminance, and the same problem occurs in the green (G) and blue (B) beams. Therefore, the convergence measurement can be accurately It can not be executed.;Accordingly, the present invention provides an apparatus and method for measuring the misconvergence of a color cathode ray tube in which a predetermined amount of beam is moved vertically or horizontally to find an accurate size of a beam, and the amount of misconvergence is measured by determining the center of the beam from the center of the size value .