Capacitive touch screen
View Patent ↗One embodiment in accordance with the invention can include a capacitive touch screen. The capacitive touch screen includes a substantially transparent substrate and a plurality of electrodes formed on the substantially transparent substrate. The plurality of electrodes are substantially parallel in a first direction and each of the plurality of electrodes includes a layer of light altering material.
1. A capacitive touch screen comprising:
a substantially transparent substrate;
a first plurality of electrodes formed on said substantially transparent substrate, said first plurality of electrodes are substantially parallel in a first direction;
a second plurality of electrodes formed substantially perpendicular to the first plurality of electrodes; and
a solid layer of light altering material formed between a corresponding one of the first plurality of electrodes and a corresponding one of the second plurality of electrodes.
2. A capacitive touch screen comprising:
a substantially transparent substrate;
a plurality of electrodes formed on said substantially transparent substrate, said plurality of electrodes being substantially parallel in a first direction,
wherein each of said plurality of electrodes includes a solid layer of light altering material and
wherein each of said plurality of electrodes is for aligning with a gap between pixels of a display device.
3. The capacitive touch screen of claim 2 , wherein said layer of light altering material comprises an anti-reflective material.
4. The capacitive touch screen of claim 3 , wherein said anti-reflective material comprises a dielectric.
5. The capacitive touch screen of claim 2 , wherein said plurality of electrodes comprises a first subset of electrodes coupled together and a second subset of electrodes coupled together, wherein said first subset of electrodes and said second subset of electrodes are interleaved.
6. The capacitive touch screen of claim 2 , wherein said layer of light altering material comprises a light absorbing material.
7. The capacitive touch screen of claim 6 , wherein said light absorbing material comprises a visible light absorbing photo resist material.
8. The capacitive touch screen of claim 2 , wherein each of said plurality of electrodes are spaced in a substantially uniform manner.
9. The capacitive touch screen of claim 2 , wherein each of said plurality of electrodes is spaced in an aperiodic manner.
10. The capacitive touch screen of claim 2 , wherein each of said plurality of electrodes comprises dendrites.
11. A method comprising:
depositing a conductive material layer over a substantially transparent substrate;
depositing a solid light altering material layer over said conductive material layer;
patterning said solid light altering material layer and said conductive material layer to form a first plurality of electrodes for use as a capacitive touch screen, said plurality of electrodes are substantially parallel; and
forming a second plurality of electrodes substantially perpendicular to the first plurality of electrodes,
wherein the solid light altering material layer is formed between a corresponding one of the first plurality of electrodes and a corresponding one of the second plurality of electrodes.
12. The method of claim 11 , wherein each of said first plurality of electrodes is for aligning with a gap between pixels of a display device.
13. The method of claim 11 , wherein said light altering material layer is an anti-reflective material.
14. The method of claim 13 , wherein said anti-reflective material layer comprises a visible light absorbing photo resist material.
15. The method of claim 11 , wherein said light altering material layer is a light absorbing material.
16. A method comprising:
depositing a solid light altering material layer over a substantially transparent substrate;
depositing a conductive material layer over said solid light altering material layer; and
etching said conductive material layer and said solid light altering material layer to form a plurality of electrodes that are substantially parallel for use as a capacitive touch screen,
wherein each of said plurality of electrodes is for aligning with a gap or mask between pixels of a display device.
17. The method of claim 16 , wherein said light altering material layer is an anti-reflective material.
18. The method of claim 16 , wherein said light altering material layer is a light absorbing material.