Patent ID: 9741932
Date: 2017-08-22
CPC Classifications: C23C,H01L,H05B

Claim:
1. A method for forming, on a film formation substrate, vapor deposition films each having a predetermined pattern, the method comprising the steps of: (I) forming a partition wall between film formation regions on the film formation substrate, the partition wall having a cross section in a reverse tapered shape such that the portion of the wall closer to the substrate is narrower than the portion further away from the substrate, and having a predetermined height; (II) providing a mask unit so that the mask unit faces the film formation substrate, the mask unit including: (III) depositing the vapor deposition particles onto the vapor deposition region of the film formation substrate through the opening of the vapor deposition mask while causing at least one of the vapor deposition mask and the film formation substrate to move relative to each other, the engaging section having a wall surface including a depressed portion, the depressed portion is tapered such that the portion closest to the substrate surface is narrower than the portion that is further from the substrate, such that the depressed portion has a shape complementary to the partition wall such that they are capable of interlocking, in the step (II), when the depressed portion of the vapor deposition mask is first brought into contact with the partition wall, the depressed portion of the vapor deposition mask having a larger width than a width of the partition wall or the width of the partition wall having a smaller width than the width of the depressed portion of the vapor deposition mask, so that the depressed portion of the vapor deposition mask and the partition wall are not interlocked with each other, and in the step (III), at least one of the vapor deposition mask and the film formation substrate being caused to move relative to each other so that the depressed portion of the vapor deposition mask and the reverse taper of the partition wall are interlocked with each other and the engaging section engages with the partition wall along a direction of the relative movement of the film formation substrate and the mask unit, and in a state where the depressed portion of the vapor deposition mask and the partition wall are interlocked with each other such that each of the respective reverse tapers are interlocked, while at least one of the mask unit and the film formation substrate is caused to move relative to each other, the vapor deposition particles being deposited onto the vapor deposition region of the film formation substrate.