COLOR DISPLAY DEVICE HAVING QUADRUPOLE CONVERGENCE COILS,申请号WO2000EP08147-传众专利搜索

COLOR DISPLAY DEVICE HAVING QUADRUPOLE CONVERGENCE COILS

申请公布号：WO0118841(A1)

申请号：WO2000EP08147

申请日期：2000.08.17

申请公布日期：2001.03.15

申请人：

KONINKLIJKE PHILIPS ELECTRONICS N.V.

发明人：VAN TIEL, ANTONIUS, H.;SLUIJTERMAN, ALBERTUS, A., S.

分类号：H01J29/76;H01J29/70;(IPC1-7):H01J29/70

主分类号：H01J29/76

摘要：The invention relates to a color display device comprising an in-line electron gun (5) for generating three electron beams (6, 7, 8), a deflection unit (51) for deflecting the electron beams (6, 7, 8) and a convergence unit (14') for dynamically influencing the convergence of the electron beams. A variable transformer (40) is connected between the convergence unit (14') and the deflection unit (51) for compensating undesired voltages induced by the deflection unit (51). The variable transformer (40) comprises three coils (47, 48, 49) wound around a hollow coil holder (43) and an adjustable core (42), which moves within the coil holder.