Kabushiki Kaisha Tokai Rika Denki Seisakusho

Smk Corporation

Seiya Murase

Osamu Yoshikawa

Katsuhide Kumagai

Masahiko Miyata

Kenji Iwasaki

Keiji Murase

Kazuki Yamaguchi

A capacitive touch input device capable of detecting two or more different input positions and detecting each input position within a short period of time is provided. One of two or more drive electrodes respectively belonging to drive electrode group DV(n) and a drive electrode group DV(n') adjacent to each other is a common drive electrode arranged therebetween. A pitch between the drive electrodes arranged at equal intervals is set so that a change in a detection voltage level R(m,n) appears at a detection electrode S(m) arranged in the vicinity of an input operator when a drive control unit performs drive control of the drive electrode group DV(n) and the input operator is at a position distant from the drive electrode group DV(n) up to an intermediate position of the adjacent drive electrode group DV(n&#x2032;).

Capacitive touch input device

A touch sensor switch for easily taking out an output of a touch sensor with high reliability. Push-type switching elementsA,B, andC are mounted on a printed circuit board, a rubber domeis provided with expanded portionsA,B, andC for housing the switching elementsA,B, andC, the switching elementsA,B, andC are provided with conductive filmsA,B, andC on an outer surface and a lower face, conductive partsA,B, andC are provided at a conductive part such as an upper surface of the expanded portionsA,B, andC of the rubber dome, or a wiring pattern of the printed circuit board, and the conductive filmsA,B, andC contact with the conductive partsA,B, andC constantly by a biasing force of the switching elementsA,B, andC regardless the operation of switch knobsA,B, andC.

Touch sensor switch

Growing community of inventors

Aichi, Japan

Seiya Murase