Device for displaying television pictures and defl

专利名称：Device for displaying television pictures and

deflection unit therefor

发明人：Sluyterman, Albertus Aemilius Seyno申请号：EP87200191.2申请日：19870209公开号：EP0232948A1公开日：19870819

专利附图：

摘要：Device for displaying television pictures, having a display tube whose neckaccommodates a gun system (3) for directing at least one electron beam to a displayscreen (4) and having an electro magnetic deflection unit (6) arranged around the

envelope (5) of the display tube and comprising a first deflection coil (9, 10) and a seconddeflection coil (7, 8) located more closely to the display tube envelope and coaxially withrespect to the first deflection coil. An annular core (11) encloses groups of conductors ofboth the first and the second deflection coil. An additional annular core (14) of amagnetisable material which encloses only groups of conductors of the seconddeflection coil (7, 8) is placed around the portion of the second deflection coil (7, 8)extending further to the display screen (4). The mutual location of the dipole fields issuch that the north-south raster error is reduced.

申请人：Philips Electronics N.V.

地址：Groenewoudseweg 1 5621 BA Eindhoven NL

国籍：NL

代理机构：Koppen, Jan

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