Heat dissipation device having anisotropic thermally conductive sections and isotropic thermally conductive sections

• Main Authors: Swan, Johanna, Eid, Feras, Elsherbini, Adel
• Format: Patent
• Language: English
• Published: 19.03.2024
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HEAT EXCHANGE IN GENERAL; HEATING; LIGHTING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MECHANICAL ENGINEERING; PRINTED CIRCUITS; SEMICONDUCTOR DEVICES; WEAPONS

A heat dissipation device may be formed having at least one isotropic thermally conductive section (uniformly high thermal conductivity in all directions) and at least one anisotropic thermally conductive section (high thermal conductivity in at least one direction and low thermal conductivity in at least one other direction). The heat dissipation device may be thermally coupled to a plurality of integrated circuit devices such that at least a portion of the isotropic thermally conductive section(s) and/or the anisotropic thermally conductive section(s) is positioned over at least one integrated circuit device. The isotropic thermally conductive section(s) allows heat spreading/removal from hotspots or areas with high-power density and the anisotropic thermally conductive section(s) transfers heat away from the at least one integrated circuit device predominately in a single direction with minimum conduction resistance in areas with uniform power density distribution, while reducing heat transfer in the other directions, thereby reducing thermal cross-talk.