Capacitive touch panel with multiple zones

摘要

In a capacitive touch panel having touch cells arranged in a two-dimensional array and defined by two coordinates, the present invention provides a third coordinate. In particular, the touch cells in a row are electrically connected a first sensing element and the touch cells in a column are electrically connected in a second sensing element. The first sensing elements can be arranged into two or more touch zones. Each of the touch zones has a zone sensing element for defining the zone coordinate. Some of the first sensing elements in one touch zone are electrically connected to the corresponding first sensing elements in the other touch zones in series. As such, the number of terminals connected to the first sensing elements can be reduced.

主权项

1. A capacitive touch panel, comprising:
a substrate comprising a plurality of touch zones arranged in an array in a non-overlapping manner; and a touch sensing unit disposed on the substrate, the touch sensing unit comprising:
a plurality of first sensing elements disposed in the touch zones, each first sensing element arranged in a first direction for defining a first coordinate;a plurality of second sensing elements disposed in the touch zones, each second sensing element arranged in a different second direction for defining a second coordinate, the first sensing elements arranged to cross the second sensing elements for forming a plurality of touch cells;a plurality of zone sensing elements, each zone sensing element disposed in a different one of the touch zones for defining a zone coordinate, each zone sensing element arranged to overlap substantially with a group of touch cells, wherein the zone sensing elements are different from and not directly electrically connected to the first sensing elements and the second sensing elements;a plurality of first terminals electrically connected to at least some of the first sensing elements;a plurality of second terminals electrically connected to at least some of the second sensing elements;a plurality of third terminals electrically connected to the zone sensing elements anda plurality of first edge-bridge lines at an edge of the touch zones, each of the touch zones comprising a plurality of first sensing elements for defining a plurality of first coordinates and a plurality of second sensing elements for defining a plurality of second coordinates, wherein each of the first edge-bridge lines is arranged to separately connect some of the first sensing elements in series in at least one of the touch zones and corresponding some of the first sensing elements in series in at least another one of the touch zones.