Television – Video display – Cathode-ray tube
Patent
1992-09-11
1995-04-25
Ro, Bentsu
Television
Video display
Cathode-ray tube
348819, 348834, 313479, G02B 2700, H04N 565
Patent
active
054103720
ABSTRACT:
An advanced video display terminal (VDT) screen shielding method and apparatus includes an electric resistance lower than or equal to 10.sup.5 .OMEGA.(R.ltoreq.10.sup.5 .OMEGA.), a transmittance between 1/3 to 2/3, a fiber diameter D.ltoreq.MIN(D.sub.1,D.sub.2). Wherein D.sub.1 =VD.times.25.4.times.0.8/RV.times.0.16 or D.sub.1 =VD.times.25.4.times.0.6/RH.times.0.16, D.sub.2 =VD.times.PA.sup.3 -QA.sup.2 +RA-S, P=1.342.+-.0.002, Q=2.032.+-.0.002, R=1.011.+-.0.002, S=0.116.+-.0.002 and the aperture is a circle, ellipse, polygon, square or other transfigure. A formed angle .ltoreq.45.degree. of the fabric is horizontally against cathode ray tube. This screen-shielding method could suitably reduce glare and reflected lights, eliminate electrostatic charges and low frequency radiation, and prevent Moires and/or Newton Rings. This screen-shielding apparatus includes a frame, the high conductive fabric and a suitable ground wire, and is installed in front of the surface of the CRT.
REFERENCES:
patent: 4253737 (1981-03-01), Thomsen et al.
patent: 4468702 (1984-08-01), Jandrell
patent: 4760456 (1988-07-01), Liang
patent: 4788597 (1988-11-01), Gart et al.
patent: 4974935 (1990-12-01), Lee
patent: 5132588 (1992-07-01), Warman
LandOfFree
Advanced VDT screen shielding method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Advanced VDT screen shielding method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Advanced VDT screen shielding method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1571062