PUSHBUTTON SWITCH ASSEMBLY FOR ENHANCING INPUT SENSITIVITY
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United States of America Patent
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N/A
Issued Date -
Dec 23, 2010
app pub date -
Jun 14, 2010
filing date -
Jun 18, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A pushbutton switch assembly includes a key unit, a circuit board, and a press unit. The key unit includes a keycap and a press member disposed at a bottom portion of the keycap. The press member has a protruding portion. The circuit board is disposed under the key unit, and includes an electrical contact unit opposing the key unit. The electrical contact unit has a first electrode region and a second electrode region. The press unit includes a positioning film disposed on the circuit board, and a conducting plate positioned between the positioning film and the circuit board. The conducting plate is connected to the first electrode region. The conducting plate is deformed to interconnect the first and second electrode regions when the key unit is pressed and the protruding portion presses down on the positioning film, and restored when the key unit is released.
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