Ruggedized switchable glazing, and/or method of making the same

Patent metadata

Field	Value
Publication number	US-9963383-B2
Application number	US-201615149495-A
Country	US
Kind code	B2
Filing date	May 9, 2016
Priority date	Nov 6, 2007
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

Certain example embodiments of this invention relate to ruggedized switchable glazings, and/or methods of making the same. The PDLC stack of certain example embodiments includes an outer substrate, a low-E UV blocking coating deposited on an inner surface of the outer substrate, a first PVB or EVA laminate, a first PET layer, a first TCO layer, the PDLC layer, a second TCO layer, a second PET layer, a second PVB or EVA laminate, and an inner substrate. The substrates may be glass substrates. The low-E UV blocking coating may include at least two layers of or including silver and/or may include one or more IR layers. Thus, certain example embodiments may advantageously reduce one or more problems associated with residual haze, color change, flicker, structural changes in the polymer and/or the LC, degradations in state-switching response times, delamination, etc. The PDLC stack of certain example embodiments may be used in connection with any form of coated article, such as, for example, windows, windshields, IG units, etc.

First claim

What is claimed is:

1. A coated article including a low-E coating supported by a glass substrate, the low-E coating comprising:
first and second IR reflecting layers comprising silver and/or gold;
a UV blocking layer that blocks significant amounts of UV light having a wavelength of from 380-400 nm so that no more than about 20% of light having a wavelength of from 380-400 nm passes through the low-E coating;
wherein the UV blocking layer is positioned so as to not directly contact the first and second IR reflecting layers; and
wherein the UV blocking layer is located between and directly contacting first and second layers comprising tin oxide.

2. The coated article of claim 1 , further comprising first and second polymer inclusive laminating layers separated by at least a liquid crystal inclusive layer, wherein the low-E coating is provided between the glass substrate and the first and second polymer inclusive laminating layers.

3. The coated article of claim 2 , wherein the liquid crystal inclusive layer is stable up to at least about 110° C.

4. The coated article of claim 2 , wherein the liquid crystal inclusive layer is stable up to at least about 120° C.

5. The coated article of claim 1 , wherein an off-axis haze of the coated article is less than or equal to about 4 at an incidence of approximately 45°.

6. The coated article of claim 1 , wherein an off-axis haze of the coated article is less than or equal to about 3 at an incidence of approximately 45°.

7. The coated article of claim 1 , wherein an off-axis haze of the coated article is less than or equal to about 2 at an incidence of approximately 45°.

8. The coated article of claim 1 , wherein the UV blocking layer comprises zinc oxide.

9. The coated article of claim 1 , wherein the UV blocking layer comprises zinc oxide doped with bismuth.

10. The coated article of claim 1 , wherein the UV blocking layer comprises bismuth.

Assignees

• Guardian Glass Llc

Inventors

• Veerasamy Vijayen S

Classifications

• C03C17/366 Primary

  Low-emissivity or solar control coatings · CPC title

• B32B17/10788

  containing ethylene vinylacetate · CPC title

• C03C17/3618

  Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic · CPC title

• B32B17/10036

  comprising two outer glass sheets · CPC title

• G02F1/137

  characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering · CPC title