Coil type unit for wireless power transmission, wireless power transmission device, electronic device and manufacturing method of coil type unit for wireless power transmission
The present invention relates to a coil type unit for wireless power transmission, a wireless power transmission device, an electronic device, and a manufacturing method of a coil type unit for wireless power transmission. A coil type unit for wireless power transmission according to the present invention includes a coil pattern in the form of a wiring pattern; a magnetic portion having the coil pattern attached to one surface thereof; and an adhesive portion interposed between the magnetic portion and the coil pattern to bond the magnetic portion and the coil pattern, wherein the magnetic portion is formed by laminating one or more conductive sheets with one or more magnetic sheets and integrally firing the laminated sheets, and the magnetic portion has conductive holes in the position, where both ends of the coil pattern are disposed, to electrically connect the both ends of the coil pattern and the conductive sheet.
1. A coil type unit for wireless power transmission, comprising:
a coil pattern in the form of a wiring pattern;
a magnetic portion having the coil pattern attached to one surface thereof;
a conductive sheet embedded in the magnetic portion; and
an adhesive portion interposed between the magnetic portion and the coil pattern to bond the magnetic portion and the coil pattern to each other,
wherein the magnetic portion has conductive holes formed in the position at which ends of the coil pattern are disposed, to electrically connect the ends of the coil pattern and the conductive sheet.
2. The coil type unit for wireless power transmission according to claim 1 , wherein the conductive sheet is laminated on a part or all of the surface of a sheet layer on which the conductive sheet is to be laminated.
3. The coil type unit for wireless power transmission according to claim 1 , wherein the conductive sheet is formed by printing and laminating conductive ink or conductive paste.
4. The coil type unit for wireless power transmission according to claim 1 , wherein the magnetic portion uses at least one of a ferrite sheet, a metal sheet, and a hybrid type sheet, which uses a combination of metal and ferrite.
5. The coil type unit for wireless power transmission according to claim 1 , wherein the conductive hole is formed by forming a through-hole in the magnetic portion and filling conductive ink or conductive paste in the through-hole.