专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明授权

US3935485A Piezoelectric key board switch 失效
标题翻译：压电键盘开关
公开(公告)号：US3935485A
公开(公告)日：1976-01-27
申请号：US506814
申请日：1974-09-17
申请人： Masafumi Yoshida , Masahiro Segawa , Hiroshi Obara
发明人： Masafumi Yoshida , Masahiro Segawa , Hiroshi Obara
IPC分类号： H01G7/02 , H02N2/18 , H03K17/967 , H01L41/04
CPC分类号： H01G7/023 , H03K17/967 , Y10S310/80
摘要： A key board switch comprising a multi-piezoelectric polymer film element A having, in the surface of the polymer film, a plurality of piezoelectric unit elements satisfying the following criteria: (a) the unit elements have electrodes on both surfaces thereof, (b) the portions of the polymer film of the piezoelectric unit elements held between the electrodes on both surfaces have piezoelectric properties and (c) any two piezoelectric unit elements are electrically independent of each other at least with respect to electrodes on one of the surfaces; and a substrate sheet B on which the polymer film element A is laid over and having windows or recesses in the positions corresponding to each of the piezoelectric unit elements of the polymer film element A. The key board switch is adapted so that those portions of the polymer film between each of the piezoelectric unit elements in the element A are secured to the substrate B at intermediate positions between the windows or recesses in the substrate B, whereby the stress applied to one of the piezoelectric unit elements is not transmitted to other adjacent elements so that the changes in the electric field generated from each of the piezoelectric unit elements can be an independent output.
摘要翻译：一种按键板开关，包括：多层压电聚合物膜元件A，其在聚合物膜的表面具有满足以下标准的多个压电单元元件：（a）单元元件在其两个表面上具有电极，（b）保持在两面电极之间的压电单元元件的聚合物膜的部分具有压电特性，（c）至少相对于其中一个表面上的电极，任何两个压电单元元件彼此电独立; 以及在与聚合物膜元件A的各个压电单元相对应的位置上放置聚合物膜元件A并具有窗口或凹部的基板B。键板开关适于使元件A中的每个压电单元元件之间的聚合物膜在基板B的窗口或凹部之间的中间位置处固定到基板B，由此施加到一个压电单元元件的应力不被传递到其它相邻元件使得从每个压电单元元件产生的电场的变化可以是独立的输出。

IPRDB

热门服务

关于我们

友情链接

联系方式