Thin-film devices and fabrication
First Claim
Patent Images
1. A bus bar pad expose method comprising, in the following order:
- providing an optical device comprising a lower transparent conductor layer and an electrochromic device stack disposed over a substantially transparent substrate;
removing one or more material layers over the lower transparent conductor layer across a bus bar expose area along a side of the substantially transparent substrate;
removing material from the lower transparent conductor layer at spaced punch through areas within the bus bar expose area; and
filling the spaced punch through areas with a material to form a bus bar.
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Abstract
Thin-film devices, for example electrochromic devices for windows, and methods of manufacturing are described. Particular focus is given to methods of patterning optical devices. Various edge deletion and isolation scribes are performed, for example, to ensure the optical device has appropriate isolation from any edge defects. Methods described herein apply to any thin-film device having one or more material layers sandwiched between two thin film electrical conductor layers. The described methods create novel optical device configurations.
88 Citations
28 Claims
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1. A bus bar pad expose method comprising, in the following order:
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providing an optical device comprising a lower transparent conductor layer and an electrochromic device stack disposed over a substantially transparent substrate; removing one or more material layers over the lower transparent conductor layer across a bus bar expose area along a side of the substantially transparent substrate; removing material from the lower transparent conductor layer at spaced punch through areas within the bus bar expose area; and filling the spaced punch through areas with a material to form a bus bar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An optically switchable device comprising:
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a substantially transparent substrate; an optical device comprising a lower transparent conductor layer and an electrochromic device stack disposed over the substantially transparent substrate; a bus bar expose area along a side of the substantially transparent substrate, the bus bar expose area comprising a region with material removed from the electrochromic device stack and spaced punch through areas penetrating the lower transparent conductor layer within the region; and a bus bar contacting the lower transparent conductor layer through the spaced punch through areas along the side of the substantially transparent substrate. - View Dependent Claims (19, 20, 21, 22)
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23. A bus bar pad expose method the comprising, in the following order:
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providing an optical device comprising a lower transparent conductor layer and an electrochromic device stack disposed over a substantially transparent substrate; multi-fluence level laser ablating to remove one or more material layers from the optical device at spaced punch through areas penetrating into the lower transparent conductor layer, wherein the spaced punch through areas are in a bus bar expose area along a side of the substantially transparent substrate; and filling the spaced punch through areas with a material to form a bus bar. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification