HEAT-CONDUCTIVE SHEET AND PRODUCTION METHOD THEREFOR

摘要

A heat-conductive sheet includes a laminated sheet and first and insulating sheets bonded to first and second main surfaces of the laminated sheet. The laminated sheet includes graphite sheets and one or more adhesive layers disposed alternately on the graphite sheets to bonds the graphite sheets to each other. The first insulating sheet is bonded to the second insulating sheet outside an outer circumferential edge of the laminated sheet to seal the laminated sheet between the first and second insulating sheets. The laminated sheet includes an outer circumferential portion connected to the outer circumferential edge and an inner portion apart from the outer circumferential edge. The outer circumferential portion of the laminated sheet has a thickness smaller than a thickness of the inner portion. The heat-conductive sheet has high reliability of sealing the insulating sheet.

主权项

1. A heat-conductive sheet comprising:
a laminated sheet including a plurality of graphite sheets and one or more adhesive layers disposed alternately on the plurality of graphite sheets to bonds the plurality of graphite sheets to each other, the laminated sheet having a first main surface, a second main surface opposite to the first main surface, and an outer circumferential edge connected to the first main surface and the second main surface and surrounding the first main surface and the second main surface; a first insulating sheet bonded to the first main surface of the laminated sheet; and a second insulating sheet bonded to the second main surface of the laminated sheet, wherein the first insulating sheet is bonded to the second insulating sheet outside the outer circumferential edge of the laminated sheet to seal the laminated sheet between the first insulating sheet and the second insulating sheet, wherein the laminated sheet includes an outer circumferential portion connected to the outer circumferential edge and an inner portion apart from the outer circumferential edge, and wherein the outer circumferential portion of the laminated sheet has a thickness smaller than a thickness of the inner portion of the laminated sheet.