In a cathode-ray tube with a thick grid No. 2 in the electron-gun system, current transfer into grid No. 2 may result in a lack of picture sharpness. To avoid this error, the aperture in grid No. 2 has a widening of conical shape or stepped diameter.
申请公布号
CA1296048(C)
申请公布日期
1992.02.18
申请号
CA19880568201
申请日期
1988.05.31
申请人
NOKIA GRAETZ GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
