▎ 摘　　要

NOVELTY - The composite substrate has substrates which are made of graphene, copper tungsten, molebinum and silicon or silicon carbide. The substrates are arranged in sequence order. The thickness of the substrates is set to predetermined range. USE - Composite substrate for mounting vertical LED chip (claimed). ADVANTAGE - The thermal conductivity and mechanical performance of the substrate can be improved, so that radiating performance of LED can be improved. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacturing method of composite substrate; and (2) LED chip. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the LED structure. (Drawing includes non-English language text)