Movable-contact unit and panel switch using the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorTakahiro Nishimura
Life of this patent
Estimating the term…
Abstract
A movable-contact unit to be used in an operating panel of various electronic devices is disclosed. The movable-contact unit is formed of movable contacts directly held on an inorganic EL sheet. To obtain adequate tactile feedback from the movable contacts even in a low temperature environment, a holding section of adhesive is patterned on the underside of the inorganic EL sheet such that the area of the holding section is not less than 25% and not greater than 50% of the area of the movable contact. Then the movable contact is held adhesively by this patterned holding section of the adhesive.
Claims2
A movable-contact unit comprising:
- an electro luminescent sheet having a topside surface and an underside surface;
- and
- a domed movable contact having a top face and a bottom face and being formed of a thin metal sheet, said top face of said domed movable contact being adhered to said underside surface of said electro luminescent sheet via a holding section constituting an adhesive interposed between said top face of said domed movable contact and said underside surface of said electro luminescent sheet;
- wherein said holding section has a diameter of not less than 2.0 mm and not greater than 2.8 mm.
Dependencies are inferred from the claim text.