Abstract: To improve heat dissipation efficiency in an electronic component embedded substrate for mounting an electronic component of a type being prohibited from connecting to a ground pattern. An electronic component embedded substrate includes an electronic component and a heat transfer block which are embedded in insulating layers, a wiring pattern facing a surface of the heat transfer block, a wiring pattern facing another surface of the heat transfer block, a via conductor connecting the wiring pattern and the surface of the heat transfer block, and another via conductor connecting the wiring pattern and the another surface of the heat transfer block. The surfaces are insulated from each other. Even when an electronic component of a type having large heat generation and being prohibited from connecting to a ground pattern is mounted, the wiring pattern functioning as a heat dissipation pattern is connected to a ground pattern on a motherboard.

Abstract: A rolled copper foil for producing a two-dimensional hexagonal lattice compound, including P: 0.01 to 0.21 wt %, Fe: 0.006 wt % or less, and the balance being Cu and inevitable impurities, and having the following relationship: 2.0<=(I/I0) where I is a (111) diffraction intensity determined by an X ray diffraction of a rolled surface after heating at 1000° C. for 30 minutes and I0 is a (111) diffraction intensity determined by an X ray diffraction of fine powder copper.

Abstract: A copper foil for producing graphene, including oxides and sulfides each having a diameter of 0.5 ?m or more having a total number of 15/mm2 or less measured by using a scanning electronic microscope before heating at 1000° C. for 1 hour.

Abstract: A copper foil for producing graphene including Cu having a purity of 99.95% by mass or more.

Abstract: A copper foil for producing graphene, having 60 degree gloss of 500% in a rolling direction and a direction transverse to rolling direction, and an average crystal grain size of 200 ?m or more after heating at 1000° C. for 1 hour in an atmosphere containing 20% by volume or more of hydrogen and balance argon.

Abstract: A copper foil for producing graphene, including oxides and sulfides each having a diameter of 0.5 ?m or more having a total number of 15/mm2 or less measured by using a scanning electronic microscope before heating at 1000° C. for 1 hour in an atmosphere containing 20% by volume or more of hydrogen and balance argon.

Abstract: A rolled copper foil for producing a two-dimensional hexagonal lattice compound, including P: 0.01 to 0.21 wt %, Fe: 0.006 wt % or less, and the balance being Cu and inevitable impurities, and having the following relationship: 2.0<=(I/I0) where I is a (111) diffraction intensity determined by an X ray diffraction of a rolled surface after heating at 1000° C. for 30 minutes and I0 is a (111) diffraction intensity determined by an X ray diffraction of fine powder copper.

Abstract: A rolled copper foil for producing graphene, wherein a ratio (IC/IA) of a maximum value of a detected intensity (IC) at ?=15 degrees and ?=90 degrees±2 degrees and a maximum value of a detected intensity (IA) at ?=70 degrees and ?=0 degree±2 degrees is less than 1, and a ratio (ID/IB) of a maximum value of a detected intensity (ID) at ?=15 degrees and ?=270 degrees±2 degrees and a maximum value of a detected intensity (IB) at ?=70 degrees and ?=180 degrees±2 degrees is less than 1, shown in {111} pole figure.

Abstract: A copper foil for producing graphene including Cu having a purity of 99.95% by mass or more.

Abstract: A copper foil for producing graphene having a ratio (Ra1/Ra2) between an arithmetic mean roughness Ra1 in a rolling direction and an arithmetic mean roughness Ra2 in a direction transverse to rolling direction of 0.7 <=(Ra1/Ra2) <=1.3.

Abstract: A copper foil for producing graphene, having 60 degree gloss of 500% in a rolling direction and a direction transverse to rolling direction, and an average crystal grain size of 200 ?m or more after heating at 1000° C. for 1 hour in an atmosphere containing 20% by volume or more of hydrogen and balance argon.

Abstract: A copper foil for producing graphene, including oxides and sulfides each having a diameter of 0.5 ?m or more having a total number of 15/mm2 or less measured by using a scanning electronic microscope before heating at 1000° C. for 1 hour.

Abstract: A copper foil for producing graphene, including oxides and sulfides each having a diameter of 0.5 ?m or more having a total number of 15/mm2 or less measured by using a scanning electronic microscope before heating at 1000° C. for 1 hour in an atmosphere containing 20% by volume or more of hydrogen and balance argon.

Abstract: A copper foil for producing graphene, having 60 degree gloss of 500% or more in a rolling direction and a direction transverse to the rolling direction, and an average crystal grain size of 200 ?m or more after heating at 1000° C. for 1 hour in an atmosphere containing 20% by volume or more of hydrogen and balance argon.