An input device such as a keyboard or a tablet for input of pattern employing a piezoelectric material/polymer 1-3 composite of the structure in which a number of rods of piezoelectric material are buried in a polymer.
申请公布号
US4755707(A)
申请公布日期
1988.07.05
申请号
US19860944523
申请日期
1986.12.22
申请人
HITACHI METALS, LTD.;HITACHI MEDICAL CORP;HITACHI, LTD.
