Deposition mask, producing method therefor and forming method for thin film pattern
A deposition mask for forming a thin film pattern having a predetermined shape on a substrate by deposition, includes a resin film that transmits visible light and has an opening pattern penetrating through the resin film and having the same shape and dimension as those of the thin film pattern so as to correspond to a preliminarily determined forming region of the thin film pattern on the substrate.
1. A deposition mask for forming a thin film pattern having a predetermined shape on a substrate by deposition, comprising:
a resin film having an opening pattern which penetrates through the resin film and has the same shape and dimensions as that of the thin film pattern so as to correspond to a preliminarily determined forming region of the thin film pattern on the substrate,
wherein the resin film is configured to transmit visible light to allow a position of the thin film pattern on the substrate to be detected through the resin film to locate an irradiation position of laser light on the position of the thin film pattern.
2. The deposition mask according to claim 1 , further comprising a metal member provided on a portion of the film outside the opening pattern.
3. The deposition mask according to claim 2 , wherein the metal member is a thin plate that has an opening corresponding to the opening pattern and having a dimension greater than that of the opening pattern, and that is provided in close contact with one surface of the film.
4. The deposition mask according to claim 3 , wherein
the metal member has a plurality of the openings separated by a plurality of elongated bridges, and
the film has the plurality of opening patterns formed so as to correspond to the plurality of openings and has ridge portions formed in parallel to the longitudinal axis of the bridges on the other side of the film so as to correspond to the forming positions of the bridges of the metal member.
5. The deposition mask according to claim 2 , wherein the metal member is a plurality of thin pieces provided so as to be distributed on one surface or inside of the film.
6. The deposition mask according to claim 2 , wherein the metal member is made of a magnetic material.
7. The deposition mask according to claim 6 , wherein the magnetic material is an invar or an invar alloy.
8. The deposition mask according to claim 2 , wherein the metal member is made of a non-magnetic material.
9. The deposition mask according to claim 2 , wherein the opening area of the opening pattern on one side of the film is the same as the area of the thin film pattern, and the opening area on the other side of the film is greater than the opening area on one side of the film.
10. The deposition mask according to claim 9 , which is configured to be used so that the metal member provided on one side of the film closely contacts with the substrate.
11. The deposition mask according to claim 1 , wherein the film is made of polyimide.