| 主权项 |
1. A user interface comprising:
a circuit carrier substrate; a first electrode structure disposed on said circuit carrier substrate, said first electrode structure comprising a first sensing electrode and a second sensing electrode adjacent at least a portion of said first sensing electrode, said second sensing electrode substantially surrounding said first sensing electrode; a second electrode structure disposed on said circuit carrier, said second electrode structure comprising a first sensing electrode and a second sensing electrode adjacent at least a portion of said first sensing electrode; a field generation and detection circuit coupled to said first sensing electrode and said second sensing electrode of said first electrode structure and to said first sensing electrode and said second sensing electrode of said second electrode structure; a user interface substrate associated with said circuit carrier substrate, said user interface substrate comprising a layer of conductive material defining a first gap and second gap, said first gap surrounding a first center portion of said layer of conductive material, said first center portion overlying at least a portion of said first sensing electrode and at least a portion of said second sensing electrode of said first electrode structure, said second gap surrounding a second center portion of said layer of conductive material, and said first gap and said second gap being surrounded by a surrounding portion of said layer of conductive material; and an electrical insulator separating said first and second electrode structures from said layer of conductive material, said surrounding portion of said layer of conductive material being on the same side of said electrical insulator as said first center portion of said layer of conductive material and said second center portion of said layer of conductive material. |
