Screen mask inspection device, solder printing inspection device, and method for inspecting screen mask
AssigneeCkd Corporation
InventorsKazuyoshi Kikuchi, Takayuki Shinyama, Tsuyoshi Ohyama, Norihiko Sakaida
Life of this patent
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Abstract
A screen mask inspection device inspects a screen mask including a screen opening that forms a printing pattern, and includes: an inspection control device that detects solder position information of a solder paste printed on a substrate via the screen opening, and based on the solder position information, determines whether a quality of printing using the screen mask is good or bad, the solder position information being based on an amount of positional misalignment of the solder paste actually printed on the substrate relative to a predetermined reference position.
Claims5
A screen mask inspection device, comprising:
- a screen mask including a screen opening that forms a printing pattern;
- a printing device that prints a solder paste on a substrate via the screen opening;
- a squeegee that is movable in a predetermined direction while contacting an upper surface of the screen mask;
- an inspection camera that captures an image of the solder paste printed on the substrate;
- and
- an inspection control device that:
- based on the image captured by the inspection camera, detects, as solder position information, a difference between amounts of positional misalignments of the solder paste printed at two end portions most distant from each other along a moving direction of the squeegee on the substrate;
- and
- based on the solder position information, identifies whether at least one of a deformation amount and an amount of positional misalignment of the screen mask is within a predetermined allowable range.
A screen mask inspection method for inspecting a screen mask, the method comprising:
- providing a screen mask inspection device that comprises:
- the screen mask including a screen opening that forms a printing pattern;
- a printing device that prints a solder paste on a substrate via the screen opening;
- a squeegee that is movable in a predetermined direction while contacting an upper surface of the screen mask;
- and
- an inspection camera that captures an image of the solder paste printed on the substrate;
- providing an inspection control device that:
- based on the image captured by the inspection camera, detects, as solder position information, a difference between amounts of positional misalignments of the solder paste printed at two end portions most distant from each other along a moving direction of the squeegee on the substrate;
- and
- based on the solder position information, identifies whether at least one of a deformation amount and an amount of positional misalignment of the screen mask is within a predetermined allowable range.
Dependencies are inferred from the claim text.