04017848 is referenced by 138 patents and cites 6 patents.

A transparent keyboard switch which is suitable for use in switch arrays is disclosed. Switch nomenclature may be positioned behind the switch and viewed from in front of the switch. The transparent switch comprises a relatively rigid electrically insulating transparent substrate having a "lower" electrode disposed on the upper surface thereof and a relatively flexible transparent film having an "upper" electrode disposed on the underside thereof and a layer of electrically insulating fluid spacing the upper electrode from the lower electrode. The switch is rendered conductive by pressing on the flexible film to locally displace the electrically insulating fluid from between upper and lower switch electrodes and bring them into contact, thereby making the switch a closed circuit.

Title
Transparent keyboard switch and array
Application Number
5/579114
Publication Number
4017848
Application Date
May 19, 1975
Publication Date
April 12, 1977
Inventor
Lawrence E Tannas Jr
Orange
CA, US
Agent
Robert Ochis
G Donald Weber Jr
H Fredrick Hamann
Assignee
Rockwell International Corporation
CA, US
IPC
G08C 1/00
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