发明名称 |
CONTACT SENSING DATA INPUT UNIT FOR CRT SCREEN |
摘要 |
<p>A touch sensitive data input device is provided for use with the screen of a cathode ray tube. The device has an annular bezel that loosely supports a firm clear backing plate. A rear transparent sheet element that has a coefficient of thermal expansion different from that of the backing plate is loosely retained against the backing plate to avoid deformation induced by differential thermal expansions. A closely spaced apart front transparent element is placed adjacent the rear transparent sheet, their respective adjacent surfaces having mutually orthogonal electrically conductive strips that make local electrical contact when a force is applied to the front element. An annular frame over the front element is secured to the bezel. In one aspect of the invention, a gasket with both sides coated with a resilient bonding material seals the frame to the bezel to protect the zone between the transparent front and rear elements from contamination by environmental pollutants.</p> |
申请公布号 |
JPS62271127(A) |
申请公布日期 |
1987.11.25 |
申请号 |
JP19870109613 |
申请日期 |
1987.05.02 |
申请人 |
JOHN FLUKE MFG CO INC |
发明人 |
PIITAA FUREDERITSUKU BAABII;JIYATSUKU RATSUTAA GIYARAUEI |
分类号 |
G06F3/041;G06F3/033;H01H13/702;H01H13/785 |
主分类号 |
G06F3/041 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|