Abstract: A head of an ultrasonic probe is formed by joining a flexible sheet holding a plurality of ultrasonic transducers to a curved surface of a support. Concave-convex shapes (concave-convex surfaces) are provided on the curved surface of the support and a joining surface of the flexible sheet. The concave-convex surfaces correspond to each other, and are engaged with each other to determine relative positions of the flexible sheet and the support when they are joined. Each of grooves on the concave-convex surface is positioned between adjacent ultrasonic transducers.

Abstract: A head of an ultrasonic probe is formed by joining a flexible sheet holding a plurality of ultrasonic transducers to a curved surface of a support. Concave-convex shapes (concave-convex surfaces) are provided on the curved surface of the support and a joining surface of the flexible sheet. The concave-convex surfaces correspond to each other, and are engaged with each other to determine relative positions of the flexible sheet and the support when they are joined. Each of grooves on the concave-convex surface is positioned between adjacent ultrasonic transducers.

Abstract: A display device includes a first substrate, a first electrode provided on the first substrate, an insulation layer provided on the first electrode, a second electrode provided on the insulation layer, a cavity partition surrounding the second electrode with an interval therebetween, a second substrate provided on the cavity partition, and a droplet of a coloring liquid sealed in the cavity partition. In the display device, a third electrode for promoting restoration of the droplet of a coloring liquid to a spherical shape is provided. In the display device, the insulation layer includes a insulator film and a low surface energy film; the insulator film assumes a specific inductive capacity of three or more and a thickness of 10 nm to 100 nm; and the low surface energy film assumes a thickness of 100 nm or less.

Abstract: A display device includes a first substrate, a first electrode provided on the first substrate, an insulation layer provided on the first electrode, a second electrode provided on the insulation layer, a cavity partition surrounding the second electrode with an interval therebetween, a second substrate provided on the cavity partition, and a droplet of a coloring liquid sealed in the cavity partition. In the display device, a third electrode for promoting restoration of the droplet of a coloring liquid to a spherical shape is provided. In the display device, the insulation layer includes a insulator film and a low surface energy film; the insulator film assumes a specific inductive capacity of three or more and a thickness of 10 nm to 100 nm; and the low surface energy film assumes a thickness of 100 nm or less.