Computer graphics processing and selective visual display system – Display peripheral interface input device – Touch panel
Reexamination Certificate
2011-04-05
2011-04-05
Wang, Quan-Zhen (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Touch panel
C345S174000, C345S179000, C178S018010, C178S018090
Reexamination Certificate
active
07920129
ABSTRACT:
A multi-touch capacitive touch sensor panel can be created using a substrate with column and row traces formed on either side of the substrate. To shield the column (sense) traces from the effects of capacitive coupling from a modulated Vcom layer in an adjacent liquid crystal display (LCD) or any source of capacitive coupling, the row traces can be widened to shield the column traces, and the row traces can be placed closer to the LCD. In particular, the rows can be widened so that there is spacing of about 30 microns between adjacent row traces. In this manner, the row traces can serve the dual functions of driving the touch sensor panel, and also the function of shielding the more sensitive column (sense) traces from the effects of capacitive coupling.
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Hotelling Steve Porter
Land Brian Richards
Apple Inc.
Morrison & Foerster / LLP
Nguyen Jennifer T
Wang Quan-Zhen
LandOfFree
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