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US 12,332,407 B2Granted
Heatable windshield
AssigneeVitro Flat Glass LLC
InventorsZhixun Ma, Adam D. Polcyn, Andrew Wagner
Life of this patent
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Abstract
A coated article includes a substrate, a first dielectric layer, a first metallic layer, a first primer layer, a second dielectric layer, a second metallic layer, a second primer layer, a third dielectric layer, a third primer layer, a third metallic layer, and a fourth dielectric layer. The total combined thickness of the metallic layers is at least 30 nanometers and no more than 60 nanometers. The article can have a sheet resistance of less than 0.85Ω/□, a visible light reflectance of not more than 10%, and a visible light transmittance of at least 70%.
Claims17
A coated article comprising:
- a substrate;
- a first dielectric layer over at least a portion of the substrate, wherein the first dielectric layer comprises a total thickness of 42 nm to 47 nm, wherein the first dielectric layer consists of a first film over at least a portion of the substrate and a second film over at least a portion of the first film, and wherein the first film comprises zinc stannate or tin oxide;
- a first metallic layer over at least a portion of the first dielectric layer, wherein the first metallic layer has a thickness of at least 90 Å and at most 100 Å;
- a first primer layer comprising titanium over at least a portion of the first metallic layer, wherein the first primer layer has a thickness of from 20 Å to 40 Å;
- a second dielectric layer over at least a portion of the first primer layer, wherein the second dielectric layer comprises a total thickness of 78 nm to 85 nm, wherein the second dielectric layer consists of a first film over at least a portion of the first primer layer, a second film over at least a portion of the first film, and a third film over at least a portion of the second film, and wherein the second film comprises zinc stannate;
- a second metallic layer over at least a portion of the second dielectric layer, wherein the second metallic layer has a thickness of at least 110 Å and at most 130 Å;
- a second primer layer comprising titanium over at least a portion of the second metallic layer, wherein the second primer layer has a thickness of from 20 Å to 40 Å;
- a third dielectric layer over at least a portion of the second primer layer, wherein the third dielectric layer comprises a total thickness of 70 nm to 82.5 nm, wherein the third dielectric layer consists of a first film over at least a portion of the second primer layer, a second film over at least a portion of the first film, and a third film over at least a portion of the second film, and wherein the second film comprises zinc stannate;
- a third metallic layer over at least a portion of the third dielectric layer, wherein the third metallic layer has a thickness of at least 110 Å and at most 130 Å;
- a third primer layer comprising titanium over at least a portion of the third metallic layer, wherein the third primer layer has a thickness of from 20 Å to 40 Å;
- a fourth dielectric layer over at least a portion of the third primer layer, wherein the fourth dielectric layer comprises a total thickness of 55 nm to 70 nm, wherein the fourth dielectric layer consists of a first film over at least a portion of the third primer layer, a second film over at least a portion of the first film, and a third film over at least a portion of the second film, and wherein the second film comprises zinc stannate;
- a fourth metallic layer over at least a portion of the fourth dielectric layer, wherein the fourth metallic layer has a thickness of at least 90 Å and at most 110 Å;
- a fourth primer layer comprising titanium over at least a portion of the fourth metallic layer, wherein the fourth primer layer has a thickness of from 20 Å to 40 Å;
- and
- a fifth dielectric layer over at least a portion of the fourth primer layer, wherein the fifth dielectric layer comprises a total thickness of 42.5 nm to 47.5 nm, wherein the fifth dielectric layer consists of a first film over at least a portion of the fourth primer layer and a second film over at least a portion of the first film, and wherein the second film comprises zinc stannate or tin oxide;
- wherein the coated article consists of four metallic layers,
- wherein a total combined thickness of the four metallic layers is at least 40 nanometers, and no more than 47 nanometers,
- wherein the coated article has a sheet resistance of not more than 0.85Ω/□, and
- wherein the coated article has a visible light transmittance of greater than 70%.
16 more elements
A vehicle transparency comprising:
- a first substrate comprising a first surface and a second surface;
- a second substrate over at least a portion of the first substrate, comprising a third surface and a fourth surface,
- wherein the second surface is disposed facing the third surface, and
- wherein the second and third surfaces are separated by an interlayer;
- and
- a functional coating deposited over either the second or the third surface, the functional coating comprising:
- a first dielectric layer over at least a portion of the second or the third surface, wherein the first dielectric layer comprises a total thickness of 42 nm to 47 nm, wherein the first dielectric layer consists of a first film over at least a portion of the second or the third surface and a second film over at least a portion of the first film, and wherein the first film comprises zinc stannate or tin oxide;
- a first metallic layer over at least a portion of the first dielectric layer, wherein the first metallic layer has a thickness of at least 90 Å and at most 100 Å;
- a first primer layer comprising titanium over at least a portion of the first metallic layer, wherein the first primer layer has a thickness of from 20 Å to 40 Å;
- a second dielectric layer over at least a portion of the first primer layer, wherein the second dielectric layer comprises a total thickness of 78 nm to 85 nm, wherein the second dielectric layer consists of a first film over at least a portion of the first primer layer, a second film over at least a portion of the first film, and a third film over at least a portion of the second film, and wherein the second film comprises zinc stannate;
- a second metallic layer over at least a portion of the second dielectric layer, wherein the second metallic layer has a thickness of at least 110 Å and at most 130 Å;
- a second primer layer comprising titanium over at least a portion of the second metallic layer, wherein the second primer layer has a thickness of from 20 Å to 40 Å;
- a third dielectric layer over at least a portion of the second primer layer, wherein the third dielectric layer comprises a total thickness of 70 nm to 82.5 nm, wherein the third dielectric layer consists of a first film over at least a portion of the second primer layer, a second film over at least a portion of the first film, and a third film over at least a portion of the second film, and wherein the second film comprises zinc stannate;
- a third metallic layer over at least a portion of the third dielectric layer, wherein the third metallic layer has a thickness of at least 110 Å and at most 130 Å;
- a third primer layer comprising titanium over at least a portion of the third metallic layer, wherein the third primer layer has a thickness of from 20 Å to 40 Å;
- a fourth dielectric layer over at least a portion of the third primer layer, wherein the fourth dielectric layer comprises a total thickness of 55 nm to 70 nm, wherein the fourth dielectric layer consists of a first film over at least a portion of the third primer layer, a second film over at least a portion of the first film, and a third film over at least a portion of the second film, and wherein the second film comprises zinc stannate;
- a fourth metallic layer over at least a portion of the fourth dielectric layer, wherein the fourth metallic layer has a thickness of at least 90 Å and at most 110 Å;
- a fourth primer layer comprising titanium over at least a portion of the fourth metallic layer, wherein the fourth primer layer has a thickness of from 20 Å to 40 Å;
- and
- a fifth dielectric layer over at least a portion of the fourth primer layer, wherein the fifth dielectric layer comprises a total thickness of 42.5 nm to 47.5 nm, wherein the fifth dielectric layer consists of a first film over at least a portion of the fourth primer layer and a second film over at least a portion of the first film, and wherein the second film comprises zinc stannate or tin oxide;
- wherein the functional coating consists of four metallic layers,
- wherein a total combined thickness of the four metallic layers is at least 40 nanometers, and no more than 47 nanometers,
- wherein the vehicle transparency has a sheet resistance of not more than 0.85Ω/□, and
- wherein the vehicle transparency has a visible light transmittance of greater than 70%.
21 more elements
Dependencies are inferred from the claim text.