Capacitive sensor electrode

A capacitive sensor structure comprising a sensing area having a width and length, wherein the capacitive sensor structure comprises:

• a plurality of capacitive electrodes, each capacitive electrode comprising:
• a rectangular electrode base section and
• a plurality of rectangular electrode cross sections,
• wherein the entire central portion of the rectangular electrode base section and the entire central portion of each electrode cross section is removed thereby providing for a base frame section and a plurality of cross frame sections,
• wherein the electrode is formed by the base frame section which substantially extends over the width of the sensing area and the plurality of cross frame sections which are symmetrically arranged to cross the rectangular base section and are spaced apart along the width of the sensing area, wherein the plurality of capacitive electrodes are arranged within a first layer and wherein the base sections of the plurality of capacitive electrodes are arranged in parallel;
• and
• wherein the cross frame sections of adjacent capacitive electrodes are offset with respect to the width of the sensing area and adjacent capacitive electrodes are arranged in inter-digital fashion with respect to the cross frame sections,
• wherein each capacitive electrode is further configured to be connected with a connecting line and wherein the connecting line extends through a center of the base frame section from a top to a bottom of the base frame section along the width of the sensing area.

A capacitive sensor structure comprising a sensing area having a width and length, wherein the capacitive sensor structure comprises a first plurality of capacitive electrodes, each capacitive electrode of the first plurality of capacitive electrodes comprising a rectangular electrode base section and a plurality of rectangular electrode cross sections, wherein the entire central portion of the rectangular electrode base section and the entire central portion of each electrode cross section is removed thereby providing for a base frame section and a plurality of cross frame sections, wherein the electrode is formed by the base frame section which substantially extends over the width of the sensing area and the plurality of cross frame sections which are symmetrically arranged to cross the rectangular base section and are spaced apart along the width of the sensing area,

• wherein the first plurality of capacitive electrodes are arranged within a first layer and wherein the base sections of the first plurality of capacitive electrodes are arranged in parallel,
• further comprising a second layer of electrodes arranged perpendicular to the base frame sections of said capacitive electrodes of the first layer, wherein first and second layer are insulated by a substrate,
• wherein center electrodes of the second layer electrodes comprise a rectangular base section substantially extending from a left to a right side along a length of the sensing area and a plurality of finger sections from a top and bottom side of the rectangular base section,
• wherein top and bottom electrode of the second layer electrodes comprise a rectangular base section substantially extending from the left to the right side along the length of the sensing area and a plurality of finger sections from a top or bottom side, respectively, and
• wherein adjacent electrodes of the second layer are arranged in an interdigital fashion with respect to the finger sections of the second layer electrodes, and
• wherein each capacitive electrode is further configured to be connected with a connecting line and wherein the connecting line extends through a center of the base frame section from a top to a bottom of the base frame section along the width of the sensing area.