Projected-capacitive (pcap) touchscreen
AssigneeElo Touch Solutions, Inc.
InventorsJoel KENT, Gazi ALI, Khalid AZIM
Life of this patent
Estimating the term…
Abstract
Various configurations and arrangements for touchscreens are disclosed to accommodate for one or more optical discontinuities that can be present within these touchscreens. When the one or more optical discontinuities are present, these configurations and arrangements of the touchscreens present a single layer of transparent conductive material that can be difficult to perceive by a human eye when viewing the touchscreens. Additionally, various edge correction techniques are disclosed to adjust mutual capacitances along a perimeter of the touchscreens. These edge correction techniques adjust mutual capacitances such that the values of the mutual capacitances are substantially uniform throughout.
Claims20
A touchscreen, comprising:
- a transparent substrate;
- and
- electrode patterns disposed on the transparent substrate, the electrode patterns including a first electrode including an electrode terminus, a second electrode adjacent to at least the electrode terminus of the first electrode, and an edge pattern element configured to adjust an edge mutual capacitance between the first electrode and the second electrode.
A touchscreen, comprising:
- a first transparent substrate having disposed thereon a first electrode including an electrode terminus;
- and
- a second transparent substrate having disposed thereon a second electrode, a floating island located in a first region between the second electrode and the electrode terminus, and a grounded electrode,
- wherein the grounded electrode is configured according to a desired edge mutual capacitance between the first electrode and the second electrode.
A touchscreen, comprising:
- a transparent substrate;
- and
- electrode patterns disposed on the transparent substrate, the electrode patterns including a first electrode, a second electrode adjacent to the first electrode, at least one floating island adjacent to at least one of the first electrode and the second electrode, and an edge pattern element configured to adjust an edge mutual capacitance between the first electrode and the second electrode.
Dependencies are inferred from the claim text.