On-display-sensor stack
In one embodiment, an electronic display includes a display stack including one or more layers; and drive or sense electrodes of a touch sensor substantially disposed on one or more of the layers on or within the display stack. The drive or sense electrodes are made of a conductive mesh of conductive material.
1. An electronic display comprising:
a display stack comprising a plurality of layers, the plurality of layers comprising a cover layer; and
a plurality of electrodes of a touch sensor disposed on one or more of the plurality of layers of the display stack other than the cover layer of the display stack, the plurality of electrodes being made of a conductive mesh of conductive material such that each of the plurality of electrodes comprises multiple conductive lines of the conductive mesh formed in a mesh, wherein:
the one or more of the plurality of layers of the display stack on which the plurality of electrodes are disposed comprises a first layer within the display stack;
the plurality of electrodes comprise first electrodes disposed on the first layer within the display stack on a first side of the first layer and second electrodes disposed on the first layer within the display stack on a second side of the first layer such that the first electrodes and the second electrodes directly contact the first layer, the first layer being a single substrate made of a same material;
the first layer within the display stack on which the first and second electrodes are disposed comprises a polarizer layer;
the first electrodes disposed on the first layer within the display stack on the first side of the first layer are positioned nearer to the cover layer of the display stack than the first layer within the display stack on which the first electrodes are disposed; and
the second electrodes disposed on the second side of the first layer within the display stack comprise one or more electrodes configurable to operate as sense electrodes.
2. The electronic display of claim 1 , wherein at least one of the plurality of layers of the display stack has an optical function modifying an optical property of light.
3. The electronic display of claim 2 , wherein the optical function comprises one or more of:
color filtering; and
polarization.
4. The electronic display of claim 1 , wherein each of the multiple conductive lines of the conductive mesh has a width within a range of approximately 1 to approximately 10 μm.
5. The electronic display of claim 1 , wherein a contribution of the multiple conductive lines of the conductive mesh to an attenuation of light through the conductive mesh is within a range of approximately 1 to approximately 10%.
6. The electronic display of claim 1 , wherein the conductive mesh substantially covers an entire touch-sensitive area of the touch sensor disposed on one or more of the layers.
7. The electronic display of claim 1 , wherein the conductive material comprises at least one of gold, aluminum, copper, silver, and carbon.
8. The electronic display of claim 1 , wherein the electrodes, a track, and a connection pad of the touch sensor are formed from a same conductive material.
9. An electronic display comprising:
a display stack comprising a plurality of layers, the plurality of layers comprising a cover layer; and
a plurality of electrodes of a touch sensor disposed on one or more of the plurality of layers of the display stack other than the cover layer of the display stack, wherein:
the one or more of the plurality of layers of the display stack on which the plurality of electrodes are disposed comprises a first layer within the display stack;
the plurality of electrodes comprise first electrodes disposed on the first layer within the display stack on a first side of the first layer and second electrodes disposed on the first layer within the display stack on a second side of the first layer such that the first electrodes and the second electrodes directly contact the first layer, the first layer being a single substrate made of a same material;
the first electrodes disposed on the first layer within the display stack on the first side of the first layer are positioned nearer to the cover layer of the display stack than the first layer within the display stack on which the first electrodes are disposed; and
the second electrodes disposed on the second side of the first layer within the display stack comprise one or more electrodes configurable to operate as sense electrodes.
10. The electronic display of claim 9 , wherein at least one of the plurality of layers of the display stack has an optical function modifying an optical property of light.
11. The electronic display of claim 10 , wherein the optical function comprises one or more of:
color filtering; and
polarization.
12. The electronic display of claim 9 , wherein the electrodes, a track, and a connection pad of the touch sensor are formed from a same conductive material.