Non-moire' shielded window forming method
First Claim
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1. A method for forming a moire'"'"'-free EMI/RFI shield comprising the steps of:
- (a) generating a photomask pattern having a series of randomly oriented, interconnected, non-linear elements;
(b) coating a substrate with a photoresist;
(c) exposing the photoresist to the photomask;
(d) developing the exposed photoresist;
(e) etching the photomask pattern into the substrate;
(f) washing and removing the photoresist;
(g) filling the etched pattern in the substrate with an electrically conductive material; and
(h) placing the placed substrate within a frame for mounting to an electronic device.
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Abstract
A shielded substrate is disclosed which has a randomly oriented, non-linear conductive pattern formed on at least one surface of the substrate. The conductive pattern provides excellent EMI/RFI shielding and visual opacity properties without generating moire'"'"' patterns. The conductive pattern is formed of a series of interconnecting non-linear, conductive elements, such as circles, ovals, ellipses and polygonal shapes. The conductive substrate may be formed through the use of photolithography process.
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Citations
7 Claims
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1. A method for forming a moire'"'"'-free EMI/RFI shield comprising the steps of:
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(a) generating a photomask pattern having a series of randomly oriented, interconnected, non-linear elements; (b) coating a substrate with a photoresist; (c) exposing the photoresist to the photomask; (d) developing the exposed photoresist; (e) etching the photomask pattern into the substrate; (f) washing and removing the photoresist; (g) filling the etched pattern in the substrate with an electrically conductive material; and (h) placing the placed substrate within a frame for mounting to an electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification