SHIELDING DEVICE FOR MEANS OF DISPLAY AND INFORMATION PROCESSING Russian patent published in 2019 - IPC H05K9/00 

FIELD: radio engineering; electronics.

SUBSTANCE: invention relates to radio engineering, in particular to shielding devices which provide electromagnetic compatibility of radioelectronic equipment in the field of energy-information protection of information processing and display devices. Shielding device of information display and processing devices consists of all-metal housing 1 and metal front panel 2 with window 3, on which a transmissive electromagnetic module is installed, consisting of an optically transparent protective screen 5, an additional optically transparent protective screen 10 and a translucent electromagnetic shield 6 made of a nickel grid coated with black chromium, which is installed between optically transparent protective screens 5 and 10, and located inside housing 1 liquid crystal active matrix 8 and information processing unit 9. Clearing electromagnetic module through dampers 12 and 13, made of a foamed dielectric with a self-adhesive current-conducting coating, contact pad 20, contact supports 21 and 28 and hold-down frame 26 is galvanically mounted on inner surface of front panel 2. Connection of rear detachable panel 31 with rear wall of housing 1 is carried out by two open resonator cavities 34 and 35, made in form of rectangular ring, resonator 34 is galvanically installed on rear detachable panel 31 through support frame 32, and resonator 35 is galvanically installed on housing 1 through support frame 32 and 33. Resonator 35 is made with zero distance between side walls and is located in resonator 34 with galvanic contact performed by sections of convex spring lobes 38 of two identical contact bands 37 installed on side walls of volumetric resonator 35.

EFFECT: creation of an efficient electromagnetic shielding device for display and information processing means in a wide frequency range from tens of Hz to several tens of GHz, with minimum geometric and color image distortions and with maximum throughput in visible light range, with high reliability and efficiency of shielding of contact connection of clearance electromagnetic module with housing and detachable connection of rear wall of housing with rear detachable panel with multiple dismantling of rear detachable panel.

54 cl, 11 dwg