TOUCH AND PROXIMITY SENSING DEVICE
First Claim
1. A touch and proximity sensing device comprising:
- a circuit board including;
a dielectric substrate having opposite first and second surfaces, said first surface having a first region and a second region spaced apart from said first region, said second surface having a third region and a fourth region spaced apart from said third region, said third region overlapping with a projection of said first region onto said second surface, said fourth region overlapping with a projection of said second region onto said second surface;
at least one capacitor sensing electrode formed on said first region;
a grounding conductor foil formed on said third region; and
a proximity sensing electrode formed on one of said second and fourth regions; and
a sensed signal processing unit disposed on said dielectric substrate and including;
at least one capacitance sensing port coupled to said capacitor sensing electrode;
a proximity sensing port coupled to said proximity sensing electrode; and
a sensed signal conversion engine coupled to said capacitance sensing port and said proximity sensing port and operable to detect an electric sensed signal from at least one of said capacitor sensing electrode and said proximity sensing electrode, and to output an output signal based on the electric sensed signal;
wherein said sensed signal conversion engine is disposed at one of;
said first surface of said dielectric substrate at a position spaced apart from said first and second regions; and
said second surface of said dielectric substrate at a position spaced apart from said third and fourth regions.
1 Assignment
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Accused Products
Abstract
A touch and proximity sensing device includes a circuit board and a sensed signal processing unit including only one sensed signal conversion engine. The circuit board includes a capacitor sensing electrode and a grounding conductor foil disposed on opposite surfaces of the circuit board, and has a proximity sensing electrode formed thereon. The grounding conductor foil is spaced apart from the proximity sensing electrode in a planar direction parallel to the surfaces of the circuit board. The sensed signal conversion engine is spaced apart from the capacitor sensing electrode and the proximity sensing electrode in the planar direction and detects electric sensed signals from the capacitor sensing electrode and the proximity sensing electrode.
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Citations
17 Claims
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1. A touch and proximity sensing device comprising:
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a circuit board including; a dielectric substrate having opposite first and second surfaces, said first surface having a first region and a second region spaced apart from said first region, said second surface having a third region and a fourth region spaced apart from said third region, said third region overlapping with a projection of said first region onto said second surface, said fourth region overlapping with a projection of said second region onto said second surface; at least one capacitor sensing electrode formed on said first region; a grounding conductor foil formed on said third region; and a proximity sensing electrode formed on one of said second and fourth regions; and a sensed signal processing unit disposed on said dielectric substrate and including; at least one capacitance sensing port coupled to said capacitor sensing electrode; a proximity sensing port coupled to said proximity sensing electrode; and a sensed signal conversion engine coupled to said capacitance sensing port and said proximity sensing port and operable to detect an electric sensed signal from at least one of said capacitor sensing electrode and said proximity sensing electrode, and to output an output signal based on the electric sensed signal; wherein said sensed signal conversion engine is disposed at one of; said first surface of said dielectric substrate at a position spaced apart from said first and second regions; and said second surface of said dielectric substrate at a position spaced apart from said third and fourth regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A circuit board adapted for placement of a sensed signal processing unit thereon, the sensed signal processing unit including a capacitance sensing port and a proximity sensing port for touch and proximity sensing, said circuit board comprising:
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a dielectric substrate having opposite first and second surfaces, said first surface having a first region and a second region spaced apart from said first region, said second surface having a third region and a fourth region spaced apart from said third region, said third region overlapping with a projection of said first region onto said second surface, said fourth region overlapping with a projection of said second region onto said second surface; at least one capacitor sensing electrode formed on said first region and to be coupled to the capacitance sensing port; a grounding conductor foil formed on said third region; a proximity sensing electrode formed on said second region and to be coupled to the proximity sensing port; and an auxiliary proximity sensing electrode formed on said fourth region and to be coupled to the proximity sensing port. - View Dependent Claims (16, 17)
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Specification