US 12,321,556 B1
Touch sensor panel with reduced dimensions and cross-coupling
Karan S. Jain, San Jose, CA (US); Sung Yul Chu, San Jose, CA (US); Zhou Lu, Fremont, CA (US); and Jeffrey M. Weisse, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jul. 13, 2023, as Appl. No. 18/352,188.
Claims priority of provisional application 63/371,026, filed on Aug. 10, 2022.
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0445 (2019.05) [G06F 3/04164 (2019.05); G06F 2203/04102 (2013.01); G06F 2203/04107 (2013.01); G06F 2203/04111 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A touch sensor panel including:
a substrate;
a plurality of electrodes formed in a first layer on a first surface of the substrate from a first material, the plurality of electrodes forming first electrodes and second electrodes and the plurality of electrodes defining an active area for touch sensing;
a plurality of routing traces formed in the first layer on the first surface of the substrate in a border area outside the active area, the plurality of routing traces formed from the first material, wherein the first material includes copper; and
a plurality of bridges and one or more shield electrodes formed in a second layer, different from the first layer, wherein:
the plurality of bridges connect groups of the plurality of electrodes to form the first electrodes,
the plurality of bridges and the one or more shield electrodes are formed from a second material different than the first material, wherein
the second material includes silver,
the one or more shield electrodes positioned above the plurality of routing traces in the border area, and
the first layer is between the second layer and the first surface of the substrate.