Patent ID: 11939658
Assignee: DAI NIPPON PRINTING CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C

Claim 2:
3. The deposition mask according to claim 1, wherein a sash bar that has a connection surface that connects the wall surfaces is located between the wall surfaces of the second recesses adjacent to each other,
wherein the second recess is surrounded by the connection surface in a plan view,
wherein the connection surface that surrounds the second recess in a plan view has a highest point closest to the second surface, and
wherein an angle that is formed between an inclination definition line and the first surface is 25° or more and 45° or less with a definition section passing through the highest point, where the definition section is a section that passes through a freely selected point on the connection surface, that is perpendicular to the first surface, and that passes through a point on the ridge line such that a distance from the freely selected point is shortest in a plan view, and the inclination definition line is a straight line that is in contact with the connection surface and the ridge line in the definition section.