Patent ID: 8094134
Filing Date: 2012-01-10
Classification: G01L,G02F,G06F

Abstract:
1. A touch panel having a press detection function, said touch panel comprising: a pressure sensitive sensor for said touch panel, wherein said pressure sensitive sensor for said touch panel includes: a first substrate having a surface; a second substrate having a surface and being disposed so as to be opposed to said first substrate; a pair of electrodes disposed on one of said surface of said first substrate opposed to said second substrate and said surface of said second substrate opposed to said first substrate, or disposed separately on both of said surfaces; pressure sensitive ink members having a conductive property of which an electric characteristic is varied by a pressing force applied thereto, each pressure sensitive ink member of said pressure sensitive ink members being disposed on said surface of said first substrate opposed to said second substrate or said surface of said second substrate opposed to said first substrate with a gap interposed from at least one of said pair of electrodes; and a gap retaining member disposed on an opposed area between said first substrate and said second substrate, said gap retaining member having a sticking property such that said first substrate and said second substrate are bonded to each other and retain the gap between each of said pressure sensitive ink members and said at least one of said pair of electrodes, said pair of electrodes are respectively disposed in a frame shape along an edge portion of said first or second substrate, said pressure sensitive ink members are located in a scattered manner along said edge portion of said first substrate or said second substrate, and disposed so that when, upon application of an external force in a thickness direction of said first substrate, said first substrate or said second substrate is deformed, said pressure sensitive ink member is put in contact with both of said pair of electrodes so that said pair of electrodes are made to be conductive to each other, said gap retaining member is disposed so as to cover at least one of said pair of electrodes located between said pressure sensitive members adjacent to each other when viewed in the thickness direction of said first substrate.