(19)
(11) EP 0 446 038 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.01.1992 Bulletin 1992/02

(43) Date of publication A2:
11.09.1991 Bulletin 1991/37

(21) Application number: 91301879.2

(22) Date of filing: 06.03.1991
(51) International Patent Classification (IPC)5: H01J 29/86
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 06.03.1990 US 488911

(71) Applicant: CHOMERICS, INC.
Woburn Massachusetts 01888 (US)

(72) Inventors:
  • Luh, Ellice Yeng
    Bethesda, Maryland 20814 (US)
  • Crowell, Roger
    Attleboro, Massachusetts 02703 (US)

(74) Representative: Barlow, Roy James et al
J.A. KEMP & CO. 14, South Square Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB)


(56) References cited: : 
   
       


    (54) Non-moire shielded window


    (57) An EMI/RFI shielded substrate, preferably a window or CRT screen is disclosed. The conductive pattern is formed of a series of randomly distributed vertices interconnected with linear and/or curvilinear elements. The pattern is formed by moving the vertices of a normal rectangular grid from their established x,y coordinates to new x′,y′ coordinates which are a small distance from the x,y coordinates at an angle, α , which is from 0° to 360°. Preferably, the vertices are displaced by an increment that is 50% or less of the distance between the vertices of the x,y coordinate pattern.






    Search report