An actuator device includes: an actuator including a first contact; and a wire member including a second contact connected to the first contact with a conductive adhesive including a conductive particle. One of the first contact and the second contact is a particular contact. The other of the first contact and the second contact is a specific contact. At least two protrusions and at least one recess are formed on and in the particular contact. The at least two protrusions are arranged in a first direction. The at least one recess is interposed between the at least two protrusions. The particular contact is joined to the specific contact with the conductive adhesive provided in the at least one recess, in a state in which each of the at least two protrusions is in contact with the specific contact.

Ensure conduction between an electronic component and a circuit substrate having reduced pitches in wiring of the circuit substrate or electrodes of the electronic component and prevent short circuits between electrode terminals of the electronic component. A connection body including an electronic component connected to a circuit substrate via an anisotropic conductive adhesive agent containing conductive particles; wherein the conductive particles are regularly arranged; and wherein the conductive particles have a particle diameter that is or less than a height of a connecting electrode of the electronic component.

An actuator device includes: an actuator including a first contact; and a wire member including a second contact connected to the first contact with a conductive adhesive including a conductive particle. One of the first contact and the second contact is a particular contact. The other of the first contact and the second contact is a specific contact. At least two protrusions and at least one recess are formed on and in the particular contact. The at least two protrusions are arranged in a first direction. The at least one recess is interposed between the at least two protrusions. The particular contact is joined to the specific contact with the conductive adhesive provided in the at least one recess, in a state in which each of the at least two protrusions is in contact with the specific contact.

An actuator device includes: an actuator including a first contact; and a wire member including a second contact connected to the first contact with a conductive adhesive including a conductive particle. One of the first contact and the second contact is a particular contact. The other of the first contact and the second contact is a specific contact. At least two protrusions and at least one recess are formed on and in the particular contact. The at least two protrusions are arranged in a first direction. The at least one recess is interposed between the at least two protrusions. The particular contact is joined to the specific contact with the conductive adhesive provided in the at least one recess, in a state in which each of the at least two protrusions is in contact with the specific contact.

An actuator device includes: an actuator including a first contact; and a wire member including a second contact connected to the first contact with a conductive adhesive including a conductive particle. One of the first contact and the second contact is a particular contact. The other of the first contact and the second contact is a specific contact. At least two protrusions and at least one recess are formed on and in the particular contact. The at least two protrusions are arranged in a first direction. The at least one recess is interposed between the at least two protrusions. The particular contact is joined to the specific contact with the conductive adhesive provided in the at least one recess, in a state in which each of the at least two protrusions is in contact with the specific contact.

Disclosed is a component-mounted structure including a first object having a plurality of first electrodes, a second object as an electronic component having second electrodes, a joint portion joining the plurality of first electrodes and the corresponding second electrodes to each other, and a resin-reinforcing portion. The joint portion has a core including at least one of a first metal and a resin particle, and a layer of an intermetallic compound of the first metal and a second metal having a low melting point. The resin-reinforcing portion includes a particulate matter including the core and the intermetallic compound, in a portion except between the first and second electrodes. An amount of the particulate matter included in the portion is 0.1 to 10 vol %.