Patent ID: 7978467
Filing Date: 2011-07-12
Classification: H01H,Y10T

Abstract:
1. A key sheet, comprising: a elastic sheet having a elastic property, and having a first surface and a second surface; a button section located on the side of said first surface of said elastic sheet to be pushed; and a contact section projected from said first surface toward said second surface of said elastic sheet, said contact section occupies a position corresponding to said button section on said second surface of said elastic sheet; and a thermally-conductive sheet having a character-shaped opening and a thermal conductivity equal to a specific value, wherein said first surface of said elastic sheet is in contact with said second surface of said thermally-conductive sheet, said button section includes a first button section, a second button section, and a third button section which is not on a straight line passing through said first and second button sections, and said thermally-conductive sheet is within an area identified by said first to third button sections.