Patent ID: 7339578

Claim:
Touch-sensitive display device ( 10 ) comprising: a touch plate ( 1 ) with a touch-sensitive surface, a network of magnetic coils ( 31 ) in the form of a monolithic layer actuating parts to modify the tactile sensation, as a function of currents flowing in said coils ( 31 ) so as to produce on the touch-sensitive surface ( 16 ) a tactile sensation which is a function of the different currents flowing in each of said coils ( 31 ), an intermediate layer ( 2 ) placed between the monolithic layer ( 3 ) of coils ( 31 ) and the touch plate ( 1 ), an addressing circuit to address currents selectively into the different coils ( 31 ), characterised in that: the touch plate ( 1 ) comprises a monolithic network of tactile sensation modification components ( 11 ), constituted by a set of one or more blades ( 12 ) integral with the touch plate via one or more arms ( 13 ), one or more blade release grooves ( 14 ) being present around part of perimeter of the blade ( 12 ), each mobile blade being able to be displaced under the action of a magnetic field, each set of mobile blades ( 12 ) of a network component ( 11 ) being subject to the field produced by one or more coils ( 31 ) of the network, the intermediate layer ( 2 ) is insulant and comprises opposite each of the tactile sensation modification components ( 11 ), a recess ( 21 ) procuring a deformation space for said set of mobile blades ( 12 ) of this component ( 11 ).