Patent ID: 6649210
Filing Date: 2003-11-18
Classification: C09K,C23C,H01L,H05B,Y10S

Abstract:
A method for an element of forming one or more thin films on a substrate by depositing two or more materials by vacuum evaporation, comprising,depositing each material under such control that ni value of the each material is k+0.5 wherein k is a constant from 2 to 5, when relationship between a deposition position and a film thickness of a material i on the substrate is approximated by the following equation (1): Di/D0iâˆ (L0/Li)3 cosni&thgr;iâ€ƒâ€ƒ(1) wherein L0 is a distance from an evaporation source to a plane of the substrate in a perpendicular direction, D0i is a film thickness of the material i at an intersection point of a perpendicular line from the evaporation source to the plane of the substrate, and Di is a film thickness of the material i at a position on the substrate which is apart from the evaporation source by a distance Li in a direction of an angle &thgr;i against the perpendicular line.