Patent ID: 7793413
Filing Date: 2010-09-14
Classification: H01L,H05K,Y02P,Y10T

Abstract:
1. An electronic component mounting method for mounting an electronic component on a board, in which an Au bump provided at an electronic component is joined to a joining terminal formed on a board by using solder made of Sn or solder containing Sn and the electronic component is adhered to the board by means of thermosetting resin thereby to mount the electronic component on the board, comprising: a resin application process of applying thermosetting resin, which contains Sn-containing solder particles that are formed by particulating the solder, on a region containing the joining terminal on a surface of the board; a positioning process of performing positioning between the Au bump and the joining terminal in a state that the electronic component is held by a holding head having a heating function; a bump joining process of lowering the holding head while heating the electronic component by the holding head thereby to join the Au bump to the joining terminal; and a resin hardening process of thermally curing the thermosetting resin thereby to adhere the electronic component on the board, wherein in the bump joining process, the applied thermosetting resin is pushed down by a lower surface of the electronic component to flow outside, the solder particles contained in the thermosetting resin are made in contact by the holding head with a side surface of the Au bump heated to a temperature higher than a melting point of the solder, and a part of the solder particles are molten in a state of being sandwiched between the Au bump and the joining terminal.