Substrate joint body, method of manufacturing the substrate joint body, and liquid ejection head
AssigneeCanon Kabushiki Kaisha
InventorKeiji Watanabe
Life of this patent
Estimating the term…
Abstract
A substrate joint body includes a first substrate that has a first surface and a second surface facing away from the first surface and has an opening in the second surface, and a second substrate joined to the second surface with an adhesive agent, and the opening is covered with the second substrate, wherein a recessed portion extending from a position exposed to the opening toward a position facing an opening edge of the opening on the second surface is formed in a third surface of the second substrate such that an adhesive agent protruding from a joint portion between the first substrate and the second substrate reaches a third surface of the second substrate that faces the opening.
Claims13
A substrate joint body comprising:
- a first substrate that has a first surface and a second surface facing away from the first surface, the first substrate having an opening formed in the second surface;
- and
- a second substrate joined to the second surface with an adhesive agent, the opening being covered with the second substrate,
- wherein a recessed portion extending from a position exposed to the opening toward a position facing an opening edge of the opening on the second surface is formed in a third surface of the second substrate such that an adhesive agent protruding from a joint portion between the first substrate and the second substrate reaches the recessed portion, the third surface facing the opening, and
- wherein the opening edge has a corner portion on the second surface, and the recessed portion extends from the position exposed to the opening toward a position facing the corner portion in the third surface.
A substrate joint body comprising:
- a first substrate that has a first surface and a second surface facing away from the first surface, the first substrate having an opening formed in the second surface;
- and
- a second substrate joined to the second surface with an adhesive agent, the opening being covered with the second substrate,
- wherein a recessed portion extending from a position exposed to the opening toward a position facing an opening edge of the opening on the second surface is formed in a third surface of the second substrate such that an adhesive agent protruding from a joint portion between the first substrate and the second substrate reaches the recessed portion, the third surface facing the opening, and
- wherein the opening edge has a corner portion with an internal angle of less than 90° on the second surface, and two recessed portions that extend with respect to two sides of the opening edge that sandwich the corner portion with the internal angle of less than 90° are provided, the recessed portion being one of the two recessed portions.
A substrate joint body comprising:
- a first substrate that has a first surface and a second surface facing away from the first surface, the first substrate having an opening formed in the second surface;
- and
- a second substrate joined to the second surface with an adhesive agent, the opening being covered with the second substrate,
- wherein a recessed portion extending from a position exposed to the opening toward a position facing an opening edge of the opening on the second surface is formed in a third surface of the second substrate such that an adhesive agent protruding from a joint portion between the first substrate and the second substrate reaches the recessed portion, the third surface facing the opening, and
- wherein the opening edge on the second surface has a plurality of corner portions, and two or more recessed portions are provided to extend toward sides between two adjacent corner portions of the opening edge, the recessed portion being one of the two or more recessed portion.
Dependencies are inferred from the claim text.