Abstract: A cell culture device includes a substrate, a wire disposed on a main surface of the substrate, an insulating film disposed on the main surface of the substrate and having a part that overlaps the wire, and the electrodes disposed on the insulating film and having a part that overlaps the wire. The insulating film has a contact hole at a position overlapping the wire and the electrode. A plurality of grooves are formed on at least the surface of a part of the electrode that overlaps the contact hole.

Abstract: A cell culture substrate includes a base, a first segment disposed on the base and occupying a part of one surface of the cell culture substrate, and a second segment disposed on the base and occupying another part of the one surface. The second segment is formed of a metal material and thus has a relatively higher surface free energy than the first segment formed of an inorganic material. The second segment is disposed such that a percentage of an area of the second segment in a total area of the first segment and the second segment increases in a gradation direction (first direction) along the one surface.

Abstract: A cell signal measurement electrode plate includes a first transistor including a gate terminal connected to a first selection line and a source terminal connected to a second selection line, a second transistor including a gate terminal connected to a drain terminal of the first transistor, a source terminal connected to an electrode, and a drain terminal connected to a common wiring line, and a first capacitor including one capacitance electrode connected to the drain terminal of the first transistor and another capacitance electrode connected to a capacitance element potential fixing wiring line.

Abstract: An electrowetting device includes a first substrate, a plurality of first electrodes formed on the first substrate, a dielectric layer formed on the plurality of first electrodes, a first water-repellent layer formed on the dielectric layer, a second substrate, a second electrode formed on the second substrate, and a second water-repellent layer formed on the second electrode. The first substrate and the second substrate are arranged with a gap between the first water-repellent layer and the second water-repellent layer. The first electrode includes an indium oxide-zinc oxide layer, the dielectric layer includes a silicon nitride layer, and the silicon nitride layer is formed directly on the indium oxide-zinc oxide layer.

Abstract: A cell culture apparatus includes: a substrate having a first surface; a pair of structures each having a wall surface intersecting the first surface, the wall surfaces facing each other; and an electrode disposed on the first surface and traversing a space between the wall surfaces, the electrode and each of the wail surfaces forming an angle other than 90 degrees.

Abstract: An electrowetting device includes a first substrate, a plurality of first electrodes formed on the first substrate, a dielectric layer formed on the plurality of first electrodes, a first water-repellent layer formed on the dielectric layer, a second substrate, a second electrode formed on the second substrate, and a second water-repellent layer formed on the second electrode. The first substrate and the second substrate are arranged with a gap between the first water-repellent layer and the second water-repellent layer. The first electrode includes an indium oxide-zinc oxide layer, the dielectric layer includes a silicon nitride layer, and the silicon nitride layer is formed directly on the indium oxide-zinc oxide layer.