US 11,893,192 B2
Interpolation electrode patterning for capacitive-grid touch sensor
Ilya Rosenberg, Mountain View, CA (US); Shuangming Li, Santa Clara, CA (US); and Darren Lochun, Mountain View, CA (US)
Assigned to Sensel, Inc., Sunnyvale, CA (US)
Filed by Sensel, Inc., Sunnyvale, CA (US)
Filed on Nov. 12, 2021, as Appl. No. 17/525,301.
Claims priority of provisional application 63/212,395, filed on Jun. 18, 2021.
Prior Publication US 2022/0404930 A1, Dec. 22, 2022
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0446 (2019.05) [G06F 3/0412 (2013.01); G06F 3/0442 (2019.05)] 26 Claims
OG exemplary drawing
 
1. A device, comprising:
multiple column electrodes comprising a first column electrode divided into a plurality of first column sub-electrodes and at least a second column electrode divided into a plurality of second column sub-electrodes, wherein the first column electrode and the second column electrode are adjacent column electrodes, wherein first column sub-electrodes of the plurality of first column sub-electrodes are interleaved with second column sub-electrodes of the plurality of second column sub-electrodes in a first direction, and wherein a first layer of the device comprises the multiple column electrodes; and
multiple row electrodes interleaved in a second direction, wherein a second layer of the device comprises the multiple row electrodes, wherein the first layer and the second layer overlap and wherein a bi-linear fall-off in sensitivity is facilitated through a structure of the multiple column electrodes and the multiple row electrodes; wherein,
the structure facilitates sensitivity control based on a density of the first column sub-electrodes, the second column sub-electrodes, and respective row sub-electrodes of the multiple row electrodes, the plurality of first column sub-electrodes and the plurality of second column sub-electrodes are organized into bundles and respective spacing within the bundles comprises a zero gap or a substantially zero gap, and respective widths of the plurality of first column sub-electrodes and the plurality of second column sub-electrodes comprise a first width for a pair of active electrode columns and a second width for interpolating electrode columns, the second width is half of the first width.