Heat radiation sheet and method of manufacturing same

Abstract

A heat radiation sheet including: a heat radiation layer that is formed in the form of a nano-web having a plurality of pores by electrospinning a spinning solution that is obtained by mixing a polymer material and a solvent, or the polymer material, a heat conductive material, and the solvent; and an adhesive layer that is laminated on one surface or both surfaces of the heat radiation layer, and that is formed in the form of the nano-web by electrospinning an adhesive material that is obtained by an adhesive, the heat conductive material, and the solvent.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of International Application No. PCT / KR2013 / 006838, filed on Jul. 30, 2013, which claims priority to and the benefit of Korean Application Nos. 10-2012-0085769, filed on Aug. 6, 2012 and 10-2013-0089635, filed on Jul. 29, 2013 in the Korean Patent Office, the entire contents of which are incorporated herein by reference.TECHNICAL FIELD[0002]The present invention relates to a heat radiation sheet that is mounted in an electronic device, to thereby radiate heat generated from the inside of the electronic device to the outside of the electronic device, and more particularly, to a heat radiation sheet that is made in the form of a nano-web form by way of an electrospinning method, and a method of manufacturing same.BACKGROUND ART[0003]Typically, electronic equipment such as computers, portable personal terminals, or communicator devices has a serious concern for a residual image problem and an intrinsic system...

AI Technical Summary

Benefits of technology

The present invention provides a heat radiation sheet that is formed using an electrospinning method to enhance its blanking performance. The adhesive layer of the sheet contains a heat conductive material to improve its heat radiation performance.

Problems solved by technology

Typically, electronic equipment such as computers, portable personal terminals, or communicator devices has a serious concern for a residual image problem and an intrinsic system stability when excessive thermal energy generated from the inside of the electronic equipment was not be diffused to the outside thereof.

This thermal energy may reduce the lifetime of the electronic equipment, or cause failure and malfunction of the electronic equipment, and in severe cases, may provide a cause of explosion or fire.

However, since the conventional heat radiation sheet uses an adhesive foam sheet attached on a surface of a metal plate, the conventional heat radiation sheet becomes thick, to thus cause a problem of making it difficult to use the conventional heat radiation sheet in thin electronic equipment such as portable electronic equipment.

However, since a foam sheet has adhesiveness, it is difficult to blank the heat radiation sheet precisely during blanking the conventional heat radiation sheet.

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