Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Reexamination Certificate
2006-05-23
2006-05-23
Lao, Lun-yi (Department: 2677)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Including keyboard
C345S157000, C345S161000, C341S034000, C338S047000, C379S433070
Reexamination Certificate
active
07050045
ABSTRACT:
A pointing device may be directly soldered to a printed circuit board. In one embodiment, a bottom substrate defines a sensing region with a plurality of interdigitated conductive trace regions. Each trace region includes interdigitated common and sense traces. At least one via passes through the bottom substrate for each trace. Each via supports a conductive path from one trace to at least one lead element. Each lead element is solderable to a printed circuit board. A flexible substrate is constructed from a heat resistant polymer. The flexible substrate has a resistive layer deposited on a bottom side. A raised pedestal is formed on the bottom substrate top face around at least a portion of the sensing region. The pedestal separates the interdigitated conductive traces from the flexible substrate resistive layer. A button on a keypad membrane may be used to depress the flexible substrate onto the trace region.
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Baker Jeffrey R.
Sanchez Carlos S.
Tickle James D.
Brooks & Kushman P.C.
Interlink Electronics, Inc.
Lao Lun-yi
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