Patent ID: 7884784

Claim:
A head-up transparent-display device in a motor vehicle, which is used for the presentation of information to a driver and/or to a passenger, said device comprising: a transparent underlayer which is at least in part superimposed on a windshield of the vehicle, in such a way that at least part of the information presented to the user is superimposed on a background, said background being visible to the user through said windshield; a plurality of LED sources, addressable in groups through a series of conductive paths, deposited on said transparent underlayer and connected to a control electronics; said LED sources integrated in the form of dice, consisting of elements obtained by dividing up a semiconductor wafer and without package; said dice integrated on, and electrically connected to said underlayer using technologies of the chip-on-board (COB) type; said LED sources arranged in groups, in which the LEDs belonging to one and the same group are electrically connected in series so as to form a segment of a curve, or of a straight line, or of a broken line; a plurality of conductive paths, each conductive path of said plurality belonging to a same segment including a number of separate path portions each having a die-LED with a lower electrode attached above the associated path portion and an upper electrode connected by wire-bonding to a subsequent pad portion; a first conductive path and a second conductive path of said plurality of conductive paths superimposed on each other at a point of intersection; and an electrically insulating pad interposed between said first conductive path and said second conductive path at said point of intersection.