Multilayer capacitive detection device, and apparatus comprising the device
First Claim
Patent Images
1. A capacitive detection device, comprising:
- a plurality of individual capacitive measuring electrodes distributed along a measuring surface and connecting tracks respectively connected to said measuring electrodes, the measuring electrodes arranged in a first layer and the connecting tracks arranged in a second layer separated by an electrically insulating insulation material; and
a first guard plane formed on the first layer between the plurality of measuring electrodes but electrically isolated from the measuring electrodes;
wherein the connecting tracks are routed from the measuring electrodes to an edge of the detection device below the first guard plane and between the measuring electrodes to reduce stray capacitive coupling between the connecting tracks and an object.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a capacitive detection device, comprising a plurality of individual capacitive measuring electrodes (12) distributed according to a measuring surface, and connecting tracks (20) respectively connected to said measuring electrodes (12), wherein the measuring electrodes (12) and the connecting tracks (20) are arranged according to two distinct optically clear layers separated by an electrically insulating insulation material (53).
The invention also relates to a method for manufacturing the device, and an apparatus comprising the device.
89 Citations
16 Claims
-
1. A capacitive detection device, comprising:
-
a plurality of individual capacitive measuring electrodes distributed along a measuring surface and connecting tracks respectively connected to said measuring electrodes, the measuring electrodes arranged in a first layer and the connecting tracks arranged in a second layer separated by an electrically insulating insulation material; and a first guard plane formed on the first layer between the plurality of measuring electrodes but electrically isolated from the measuring electrodes; wherein the connecting tracks are routed from the measuring electrodes to an edge of the detection device below the first guard plane and between the measuring electrodes to reduce stray capacitive coupling between the connecting tracks and an object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method for producing a capacitive detection device comprising a plurality of individual capacitive measuring electrodes distributed according to a measuring surface and connecting tracks respectively connected to said measuring electrodes, said method comprising:
-
producing measuring electrodes in a first layer and connecting tracks in a second layer separated by an electrically insulating insulation material; forming a guard plane on the first layer between the measuring electrodes but electrically isolated from the measuring electrodes; and routing the connecting tracks from the measuring electrodes to an edge of the detection device below the guard plane and between the measuring electrodes to reduce stray capacitive coupling between the connecting tracks and an object. - View Dependent Claims (15, 16)
-
Specification