(i9) United States
(12) Patent Application Publication oo) Pub. No.: US 2008/0309633 Al
Hotelling et al. (43) Pub. Date: Dec. 18,2008
(54) TOUCH-SENSITIVE DISPLAY
(75) Inventors: Steve Porter Hotelling, San Jose, CA (US); John Z. Zhong,
Cupertino, CA (US)
APPLE C/O MORRISON AND FOERSTER ,LLP
555 WEST FIFTH STREET SUITE 3500
LOS ANGELES, CA 90013-1024 (US)
(73) Assignee: Apple Inc., Cupertino, CA (US)
(21) Appl.No.: 11/818,498
(22) Filed: Jun. 13, 2007
(51) Int. CI.
G06F 3/041 (2006.01)
A substantially transparent mutual-capacitance touch sensor panel is disclosed having sensors fabricated on a single side of a substrate for detecting multi-touch events. Substantially transparent row and column traces can be formed on the same side of the substrate, separated by a thin dielectric material, using diamond, rectangular, or hexagonal rows and columns. Dummy shapes of the same material as the row and column traces can be formed alongside the rows and columns to provide optical uniformity. The metal traces in the border areas used to route the rows to the short edge of the substrate can also be formed on the same side of the substrate as the rows and columns. The metal traces can allow both the rows and columns to be routed to the same short edge of the substrate so that a small flex circuit can be bonded to only one side of the substrate.