The switch body includes: a wiring substrate where first to fourth fixed contact members are formed; and a movable contact member including a pressure receiving part opposite from the second fixed contact member, a first outer edge facing the first fixed contact member, and a second outer edge facing the third fixed contact member. The fourth fixed contact member is formed in a region outside a projection region being a projection of the movable contact member on the wiring substrate and is in a position facing the first outer edge when the second outer edge is moved to a region where the second fixed contact member is formed.

A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.

An input mechanism is disclosed. The input mechanism includes a dome support structure defining an opening that extends through the dome support structure, a collapsible dome positioned in the opening and engaged with the dome support structure, and a cover member coupled to the dome support structure and covering the collapsible dome, thereby retaining the collapsible dome within the opening of the dome support structure.

A key entry device including a housing, a keypad array disposed within the housing and including a plurality of keys, a key contact array disposed within the housing below the keypad array and including a plurality of contact pairs, a dome array underlying the keypad array and the key contact array and including a plurality of domes, and a protrusion array underlying the dome array and including a plurality of protrusions, whereby depression of one of the plurality of keys of the keypad array causes a corresponding one of the domes of the dome array to be displaced downwardly and to be deformed by pushing engagement with a corresponding one of the protrusions of the protrusion array into contact with at least one of the contact pairs of the key contact array.

A push switch includes a stationary contact and a movable contact. The stationary contact includes a base material and a conductive layer that covers the base material. The movable contact is disposed opposite a contact surface of the stationary contact. The movable contact is movable between a first position where the movable contact is in contact with the contact surface and a second position where the movable contact is apart from the contact surface. The stationary contact has a groove that divides the contact surface into a plurality of areas. Connection surfaces connect respective opening edges of the groove with a bottom of the groove. Each of the connection surfaces has a slope that is inclined at acute angle relative to the contact surface.

A push switch includes: a case that has a depression that opens in a first direction, and an enlarging depression that is adjacent to the depression; a movable component disposed in the depression; a first stationary contact that is provided on a bottom surface of the depression, the first stationary contact is located in a second direction that is opposite to the first direction from the movable component; and a second stationary contact exposed at the bottom surface of the depression. When the movable component is deformed, the movable component comes into contact with the first stationary contact. The second stationary contact has a contact portion with which the movable component is in contact. The enlarging depression is more apart from a center of the case than the depression is apart from the center of the case when viewed in the first direction. The depression and the enlarging depression are integrally made. The enlarging depression is adjacent to the contact portion.

Particular embodiments described herein provide a display that includes a mask that includes a one or more exposed areas, a top electrode, one or more bottom electrodes, a dielectric between the top electrode and the one or more bottom electrodes, and an electrical connection to create a differential voltage between the top electrode and the one or more bottom electrodes.

A switch unit includes a wiring board, a spacer, a movable contact element, a pressing element, and a protective sheet. A first stationary contact element and a second stationary contact element having rectangular shapes are provided on an upper surface of the wiring board. A contact section includes the movable contact element, the first stationary contact element, and the second stationary contact element. The movable contact element is mounted on a portion of the upper surface of the wiring board that is exposed from an inside of an opening of the spacer so that an outer edge of the movable contacts the second stationary contact element. The first stationary contact element continuously extends from a region of the wiring board facing a movable contact portion of the movable contact element to a region of the wiring board outside a region of the wiring board onto which the movable contact element is projected.

A switch includes a housing and a metal terminal that is insert-molded into the housing. The metal terminal includes a contact portion provided on a first side of the metal terminal, an external connection portion provided on a second side of the metal terminal, and an embedded portion provided between the contact portion and the external connection portion and embedded in the housing. In the embedded portion, groove portions are formed in a front surface of the metal terminal and a rear surface of the metal terminal, the groove portions in the front surface being formed at positions different from the groove portions in the rear surface. The groove portions extend in a widthwise direction that is a direction intersecting an extending direction of the embedded portion.

Particular embodiments described herein provide a display that includes a mask that includes a one or more exposed areas, a top electrode, one or more bottom electrodes, a dielectric between the top electrode and the one or more bottom electrodes, and an electrical connection to create a differential voltage between the top electrode and the one or more bottom electrodes.