FIELD: information technology.
SUBSTANCE: method of manufacturing a radio frequency identification device involves making an antenna (27) on a thin and flexible substrate (21); a perforated sheet (22) having at least one cavity (23) in its thickness, is placed on the substrate (21); a microelectronic chip (24) is placed in each cavity (23) of the perforated sheet (22) and the output contacts (25) of the microelectronic chip (24) are electrically connected to corresponding terminals (26) of the antenna (27); microelectronic chip (24) connected that way is protected by sealing off the cavity (23) which contains the chip with a polymerisable resin. The method is characterised by that the thin and flexible substrate (21) and the perforated sheet (22) have a thin, calibrated and essentially uniform thickness, wherein the sum of the thicknesses is less than 350 mcm. The thickness of the perforated sheet (22) is constant and easily exceeds the thickness of the microelectronic chip (24). An absolutely flat end article without air bubbles is then obtained.
EFFECT: obtaining radio frequency identification devices characterised by high reliability over time with low cost production.
9 cl, 4 dwg
