Application Number: 00120680
Application Date: 2000.12.09
Publication Number: 1303117
Publication Date: 2001.07.11
Priority Information: 1999/12/9 KR 56249/99
International: H01J29/07
Applicant(s) Name: LG Electronics Inc.
Address:
Inventor(s) Name: Go Song-U
Patent Agency Code: 11105
Patent Agent: huang min
Abstract An shadow mask for a flat cathode ray tube has a panel glass with fluorescent materials spread on the inner surface thereof, a funnel glass fixed on the rear portion of the panel glass and having a neck portion as an integral body therewith to which an electron gun emitting electron beams to the fluorescent materials side is sealed, a deflection yoke formed on the outer peripheral surface of the neck portion, and the shadow mask fixed on the inner surface of the panel glass, having a color discrimination function and forming a plurality of slop type apertures on the surface thereof, is characterized in that the relation between the vertical pitch of the apertures on the shadow mask and the vertical pitch of the electron beams scanned on the screen is in the range of 0.053<=s/a<=0.438.