Touch sensor panels with reduced static capacitance
First Claim
Patent Images
1. A touch sensitive panel comprising:
- a plurality of first voltage lines that are driven at a first phase;
a plurality of second voltage lines that are driven at a second phase that is different than the first phase;
a drive region coupled to the first voltage lines; and
a sense region, wherein the first voltage lines and the second voltage lines cross-under the sense region,wherein the first and second phases of the first and second voltage lines respectively reduce static capacitance in the sense region.
1 Assignment
0 Petitions
Accused Products
Abstract
Capacitive touch panels may include a plurality of positive voltage lines that are driven at a first phase. These positive voltage lines may be used to provide the drive capacitance signal sensed by one or more sense regions. The touch panels may also include a plurality of negative phase voltage lines that are driven at a phase that is different than the first phase. Both the positive and negative voltage lines may cross-under one or more sense regions. The negative phase voltage lines are able to counter act and reduce the static capacitance in the sense regions.
44 Citations
28 Claims
-
1. A touch sensitive panel comprising:
-
a plurality of first voltage lines that are driven at a first phase; a plurality of second voltage lines that are driven at a second phase that is different than the first phase; a drive region coupled to the first voltage lines; and a sense region, wherein the first voltage lines and the second voltage lines cross-under the sense region, wherein the first and second phases of the first and second voltage lines respectively reduce static capacitance in the sense region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method of reducing static capacitance in a touch panel comprising:
-
driving a plurality of first voltage lines at a first phase; driving a plurality of second voltage lines at a second phase that is different than the first phase, wherein the first voltage lines and the second voltage lines cross-under a sense region; and wherein the first and second phases of the first and second voltage lines respectively reduce static capacitance in the sense region. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A method of reducing the static capacitance in a sense region of a touch panel comprising:
-
providing a sense region comprising a plurality of capacitive elements of pixels, providing a plurality of first voltage lines that are driven at a first phase and cross-under the sense region; providing a drive region comprising a plurality of capacitive elements of pixels connected to the first voltage lines; selecting a number of second voltage lines to be driven at a second phase that is different than the first phase; and providing the selected number of second voltage lines that cross-under the sense region; wherein the first and second phases of the first and selected number of second voltage lines respectively reduce static capacitance in the sense region.
-
-
25. A touch screen including display pixels with capacitive elements, the touch screen comprising:
-
a plurality of first voltage lines that are driven at a first phase; a plurality of second voltage lines that are driven at a second phase that is different than the first phase; a drive region comprising a plurality of capacitive elements of pixels connected to the first voltage lines; a sense region, wherein the first voltage lines and the second voltage lines cross-under the sense region; and wherein the first and second phases of the first and second voltage lines respectively reduce static capacitance in the sense region.
-
-
26. A digital media player comprising a touch screen comprising:
-
a plurality of first voltage lines that are driven at a first phase; a plurality of second voltage lines that are driven at a second phase that is different than the first phase; a drive region comprising a plurality of capacitive elements of pixels connected to the first voltage lines; and a sense region, wherein the first voltage lines and the second voltage lines cross-under the sense region; and wherein the first and second phases of the first and second voltage lines respectively reduce static capacitance in the sense region.
-
-
27. A mobile telephone comprising a touch screen comprising:
-
a plurality of first voltage lines that are driven at a first phase; a plurality of second voltage lines that are driven at a second phase that is different than the first phase; a drive region comprising a plurality of capacitive elements of pixels connected to the first voltage lines; and
a sense region comprising a plurality of capacitive elements of pixels, wherein the first voltage lines and the second voltage lines cross-under the sense region; andwherein the first and second phases of the first and second voltage lines respectively reduce static capacitance in the sense region.
-
-
28. A personal computer comprising a touch screen comprising:
-
a plurality of first voltage lines that are driven at a first phase; a plurality of second voltage lines that are driven at a second phase that is different than the first phase; a drive region comprising a plurality of capacitive elements of pixels connected to the first voltage lines; a sense region, wherein the first voltage lines and the second voltage lines cross-under the sense region; and wherein the first and second phases of the first and second voltage lines respectively reduce static capacitance in the sense region.
-
Specification