Patent ID: 8677614
Filing Date: 2014-03-25
Classification: H01L,H05K,Y10T

Abstract:
1. A device mounting method comprising: placing a bonding head, on which a device is loaded, at a preparation height above a board; determining a search height at which a mounting position on the board, on which the device is to be mounted, is searched for; and lowering the bonding head from the preparation height to a bonding height via the search height, and mounting the device on the mounting position on the board, wherein the lowering and mounting comprises determining whether the device touches the board by performing at least one of following operations: whether a third condition is satisfied, the third condition being that the actual height is within the predetermined range, wherein the method further comprises determining that the device touches the board if at least one of the first, second and third conditions is satisfied, wherein the difference between the command height and the actual height at each of the two successive time points comprises a height error, and wherein the obtaining the difference comprises: