Substrates or assemblies having two-color laser-fused frits, and/or method of making the same
View Patent ↗Certain example embodiments relate to substrates or assemblies having two-colored laser-fused frits, and/or methods of making the same. In certain example embodiments, a first pattern is formed or written on a glass sheet by laser fusing a first frit material to the glass sheet. A second pattern is formed by laser fusing a second frit material disposed on the first frit material. An optional thin film coating is supported by the glass sheet. The glass sheet with the first and second patterns and optional coating is cut prior to heat treatment. A YAG or other type of laser may be used to directly or indirectly heat the frit materials, at the same or different times, and the frit materials may be wet-applied to the substrate. In certain instances, the laser firing raises the temperature of the glass substrate to no more than 100 degrees C. or preferably even lower.
1. A heat treatable coated article, comprising:
a first glass substrate having a first major surface and a second major surface opposite to the first major surface;
a first laser-fired frit pattern formed on a majority of the first major surface of the substrate;
a second laser-fired frit pattern formed on the first laser-fired frit pattern; and
a heat treatable low-E coating formed over the substrate and the first and second laser-fired frit patterns, wherein the low-E coating comprises an infrared (IR) reflecting layer comprising silver located over and directly contacting a dielectric layer comprising zinc oxide, the low-E coating further comprising a dielectric layer located over at least the IR reflecting layer comprising silver,
wherein the visible transmission of the coated article with the first and second frit patterns and the low-E coating thereon is less than 25% post heat treatment, and
wherein the first and second laser-fired frit patterns cause visible characteristics of the coated article to differ based on the major surface from which the coated article is viewed, so that the coated article has a first visible characteristic when viewed from the first major surface of the substrate and has a second visible characteristic when viewed from the second major surface of the substrate, the first and second visible characteristics being different from each other.