Touch screen sensor
A touch screen sensor includes a visible light transparent substrate and an electrically conductive micropattern disposed on or in the visible light transparent substrate. The micropattern includes a first region micropattern within a touch sensing area and a second region micropattern. The first region micropattern has a first sheet resistance value in a first direction, is visible light transparent, and has at least 90% open area. The second region micropattern has a second sheet resistance value in the first direction. The first sheet resistance value is different from the second sheet resistance value.
1. A patterned substrate, comprising:
a visible light transparent substrate; and
a plurality of spaced apart regions disposed on or in the visible light transparent substrate, each region comprising an electrically conductive mesh defining a plurality of enclosed open areas, the mesh having an open area greater than about 75 percent and electrically connected to an electrically conductive pad for connection to an electronic device, the mesh and the conductive pad including a same metal at approximately a same thickness.
2. The patterned substrate of claim 1 , wherein if a total area of the plurality of spaced apart regions is segmented into an array of 5 millimeter by 5 millimeter regions, then none of the regions has a shadowed area fraction that differs by greater than about 50 percent from an average for all of the regions.
3. The patterned substrate of claim 1 , wherein if a total area of the plurality of spaced apart regions is segmented into an array of 1 millimeter by 1 millimeter regions, then none of the regions has a shadowed area fraction that differs by greater than about 50 percent from an average for all of the regions.
4. The patterned substrate of claim 1 , wherein the electrically conductive mesh in each region in the plurality of spaced apart regions has an open area greater than about 80%.
5. The patterned substrate of claim 1 , wherein the electrically conductive mesh in each region in the plurality of spaced apart regions has an open area greater than about 90%.
6. The patterned substrate of claim 1 , wherein the electrically conductive mesh in each region in the plurality of spaced apart regions has an open area between 95 and 99.5%.
7. The patterned substrate of claim 1 , wherein the visible light transparent substrate comprises a glass.
8. The patterned substrate of claim 1 , wherein the visible light transparent substrate comprises a polymer.
9. The patterned substrate of claim 1 , wherein the electrically conductive mesh in each region in the plurality of spaced apart regions comprises randomly shaped cells.
10. The patterned substrate of claim 1 , wherein each enclosed open area is surrounded by metal traces having widths between 0.5 and 25 micrometers.