US 12,284,770 B2
Low sheet resistance coating
Zhixun Ma, Richmond, CA (US); Maryanne Griffin, Apollo, PA (US); Ashtosh Ganjoo, Allison Park, PA (US); Paul A. Medwick, Wexford, PA (US); Sudarshan Narayanan, Oxford (GB); and Adam Polcyn, Pittsburgh, PA (US)
Assigned to Vitro Flat Glass LLC, Cheswick, PA (US)
Filed by Vitro Flat Glass LLC, Cheswick, PA (US)
Filed on Feb. 11, 2021, as Appl. No. 17/173,924.
Claims priority of provisional application 62/976,645, filed on Feb. 14, 2020.
Prior Publication US 2021/0274657 A1, Sep. 2, 2021
Int. Cl. H05K 3/46 (2006.01); H05K 1/02 (2006.01)
CPC H05K 3/4644 (2013.01) [H05K 1/0213 (2013.01); H05K 1/0274 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A coated article comprising:
a substrate;
a first dielectric layer in direct contact with at least a portion of the substrate, wherein the first dielectric layer comprises a first film in direct contact with the substrate and a second film in direct contact with the first film;
a first metallic layer in direct contact with at least a portion of the first dielectric layer;
a first primer layer in direct contact with at least a portion of the first metallic layer,
wherein the first primer layer comprises AlxZn1-x,
wherein x is within the range of greater than 0 wt % and up to 30 wt %;
a second dielectric layer in direct contact with at least a portion of the first primer layer, wherein the second dielectric layer comprises a first film in direct contact with the first primer layer, a second film in direct contact with the first film, and a third film in direct contact with the second film,
a second metallic layer in direct contact with at least a portion of the second dielectric layer;
a second primer layer in direct contact with at least a portion of the second metallic layer,
wherein the second primer layer comprises AlxZn1-x,
wherein x is within the range of greater than 0 wt % and up to 30 wt %;
a third dielectric layer in direct contact with at least a portion of the second primer layer,
a third metallic layer in direct contact with at least a portion of the third dielectric layer;
a third primer layer in direct contact with at least a portion of the third metallic layer,
wherein the third primer layer comprises AlxZn1-x,
wherein x is within the range of greater than 0 wt % and up to 30 wt %;
a fourth dielectric layer in direct contact with at least a portion of the third primer layer;
a fourth metallic layer in direct contact with at least a portion of the fourth dielectric layer;
a fourth primer layer in direct contact with at least a portion of the fourth metallic layer,
wherein the fourth primer layer comprises AlxZn1-x,
wherein x is within the range of greater than 0 wt % and up to 30 wt %; and
a fifth dielectric layer in direct contact with at least a portion of the fourth primer layer,
wherein the coated article comprises a sheet resistance of not more than 0.85 ohms per square and a visible light transmittance of at least 70%.