Integrated touch screen
An apparatus having a touch-sensitive screen, a touch-sensor controller and a flexible printed circuit. A plurality of first conductive electrodes and a plurality of second conductive electrodes are substantially aligned with one or more gaps between two or more pixels of a two-dimensional array of pixels such that the electrodes do not cross over at least one of the pixels of the two-dimensional array of pixels. The plurality of first conductive electrodes form vertices within the one or more gaps between two or more pixels of the two-dimensional array of pixels such that the vertices do not obscure in plan view at least one of the pixels of the two-dimensional array of pixels. The touch-sensor controller is configured to detect and process the change in capacitance at one or more touch-sensor nodes to determine the presence and location of a touch-sensor input.
1. An apparatus, comprising:
a touch-sensitive screen comprising a plurality of layers, the plurality of layers comprising:
a light emissive layer,
a two-dimensional array of pixels configured to produce an image,
a cathode layer, the cathode layer being configured to energize the light emissive layer,
a substantially transparent cover layer,
a first electrode layer comprising a plurality of first conductive electrodes,
a second electrode layer comprising a plurality of second conductive electrodes; and
a substrate;
wherein the plurality of first conductive electrodes and the plurality of second conductive electrodes are substantially aligned with one or more gaps between two or more pixels of the two-dimensional array of pixels such that the plurality of first conductive electrodes and the plurality of second conductive electrodes do not cross over at least one of the pixels of the two-dimensional array of pixels;
wherein the plurality of first conductive electrodes form vertices within the one or more gaps between two or more pixels of the two-dimensional array of pixels such that the vertices do not obscure in plan view at least one of the pixels of the two-dimensional array of pixels;
wherein the plurality of first conductive electrodes and the plurality of second conductive electrodes are electrically connected to one or more tracks of conductive material on the substrate;
a touch-sensor controller configured to detect and process the change in capacitance at one or more touch-sensor nodes to determine the presence and location of a touch-sensor input, and further configured to communicate information about the touch-sensor input to one or more components of the apparatus;
a flexible printed circuit electrically connected to the touch-sensor controller; wherein the one or more tracks of conductive material on the substrate is electrically connected to the flexible printed circuit.
2. The apparatus of claim 1 , the light emissive layer comprising an organic light emitting diode (OLED).
3. The apparatus of claim 2 , wherein the first electrode layer comprising a plurality of first conductive electrodes and the second electrode layer comprising a plurality of second conductive electrodes are in contact with a same layer.
4. The apparatus of claim 2 , wherein the plurality of first conductive electrodes and the second conductive electrodes are formed on the same layer.
5. The apparatus of claim 2 , the two-dimensional array of pixels comprising one or more layers.
6. The apparatus of claim 1 , wherein the plurality of first conductive electrodes and the second conductive electrodes are configured to capacitively couple across a dielectric material.
7. The apparatus of claim 6 , the dielectric material comprising a non-birefringent material.
8. The apparatus of claim 1 , the plurality of first conductive electrodes comprising non-linear conductive lines configured to reduce the probability of causing interference or moirépatterns.
9. The apparatus of claim 8 , the non-linear conductive lines comprising substantially sinusoidal shapes.
10. The apparatus of claim 2 , wherein the plurality of first conductive electrodes form an array of diamond-shaped cells.
11. An apparatus, comprising:
a touch-sensitive screen comprising a plurality of layers, the plurality of layers comprising:
a light emissive layer,
a two-dimensional array of pixels configured to produce an image,
a cathode layer, the cathode layer being configured to energize the light emissive layer,
a substantially transparent cover layer,
a first electrode layer comprising a plurality of first conductive electrodes forming a first mesh pattern,
a second electrode layer comprising a plurality of second conductive electrodes forming a second mesh pattern; and
a substrate;
wherein the plurality of first conductive electrodes is substantially aligned with one or more gaps between two or more pixels of the two-dimensional array of pixels such that the plurality of first conductive electrodes does not cross over at least one of the pixels of the two-dimensional array of pixels;
wherein the plurality of first conductive electrodes form vertices within the one or more gaps between two or more pixels of the two-dimensional array of pixels such that the vertices do not obscure in plan view at least one of the pixels of the two-dimensional array of pixels;
wherein the plurality of first conductive electrodes and the plurality of second conductive electrodes are electrically connected to one or more tracks of conductive material on the substrate;
a touch-sensor controller configured to detect and process the change in capacitance at one or more touch-sensor nodes to determine the presence and location of a touch-sensor input, and further configured to communicate information about the touch-sensor input to one or more components of the apparatus;
a flexible printed circuit electrically connected to the touch-sensor controller;
wherein the one or more tracks of conductive material on the substrate is electrically connected to the flexible printed circuit.
12. The apparatus of claim 11 , the light emissive layer comprising an organic light emitting diode (OLED).
13. The apparatus of claim 12 , wherein the first electrode layer comprising a plurality of first conductive electrodes forming a mesh pattern and the second electrode layer comprising a plurality of second conductive electrodes forming a mesh pattern are in contact with a same layer.
14. The apparatus of claim 12 , wherein the plurality of first conductive electrodes and the second conductive electrodes are formed on a same layer.
15. The apparatus of claim 12 , the two-dimensional array of pixels comprising one or more layers.
16. The apparatus of claim 11 , wherein the plurality of first conductive electrodes and the second conductive electrodes are configured to capacitively couple across a dielectric material.
17. The apparatus of claim 16 , the dielectric material comprising a non-birefringent material.
18. The apparatus of claim 11 , the plurality of first conductive electrodes comprising non-linear conductive lines configured to reduce the probability of causing interference or moirépatterns.
19. The apparatus of claim 11 , wherein the first mesh pattern and the second mesh pattern are not identical.
20. The apparatus of claim 12 , wherein the plurality of first conductive electrodes form an array of diamond-shaped mesh cells.