A polyvinyl acetal resin film, having an average surface roughness Rz of at least one surface of 3.0 μm or less; a birefringence Δn of 3.0×10.sup.−4 or less; and an average thickness of 200 μm or less.

Certain example embodiments of this invention relate to techniques for laser ablating/scribing peripheral edges of a coating (e.g., a low-emissivity, mirror, or other coating) on a glass or other substrate in a pre- or post-laminated assembly, pre- or post-assembled insulated glass unit, and/or other product, in order to slow or prevent corrosion of the coating. For example, a 1064 nm or other wavelength laser may be used to scribe lines into the metal and/or metallic layer(s) in a low-emissivity or other coating provided in an already-laminated or already-assembled insulated glass unit or other product, e.g., around its periphery. The scribe lines decrease electron mobility from the center of the coating to the environment and, thus, slow and sometimes even prevent the onset of electrochemical corrosion. Associated products, methods, and kits relating to same also are contemplated herein.

A system such as a vehicle may have windows. A window may have a structural window layer formed from one or more glass layers. A conductive coating such as an infrared-light blocking coating or other optical filter layer may be formed on the window. The conductive coating may include one or more silver layers or other conductive material. Unpatterned portions of the conductive coating are conductive along orthogonal dimensions. A region of the conductive coating may have parallel line-shaped openings that render the coating conductive in only a single dimension while enhancing radio transparency. Another region of the conductive coating may have a two-dimensional pattern of openings such as a mesh-shaped opening formed from intersecting straight and/or curved lines. In this region, the coating is locally rendered insulating and radio-frequency transparent. Antennas and ohmic heating elements may be formed in the coating.

A vehicle window glass according to the present invention includes a glass body having at least one glass plate and a film region that is stacked on a surface of the at least one glass plate, and is formed by a conductive film having a surface resistance value of 11 to 15 /.

Embodiments of the present disclosure may generally relate to systems, apparatus, and/or processes directed to a manufacturing process flow for packages that include one or more glass layers that include patterning features, such as electrically conductive traces, RDLs, and vias within the packages. In embodiments, a package may include a glass layer with a first side and a second side opposite the first side, where the glass layer is a dielectric layer. The package may include another layer coupled with the first side of the glass layer, and a pattern on the second side of the glass layer to receive a deposited material in at least a portion of the pattern.

The use of camera-based safety systems is growing at a rapid rate in automobiles where they provide lane departure warning, collision avoidance, adaptive cruise control and other functions. For proper operation, the cameras require a clear undistorted field of view. Keeping the camera area free of snow and ice has been a problem. The lines widths of printed silver frit defroster circuits can interfere with the camera function. Transparent conductive solar control coatings and films can be used but they often result is a poor red ratio. Thin embedded wire defrosters are invisible for all practical purposes but are expensive and difficult to connect electrically. The invention provides an invisible defroster circuit that can be inexpensively produced by applying the circuit to the inside surface of glass rather than imbedding within the laminate.

Embodiments of the present disclosure may generally relate to systems, apparatus, and/or processes directed to a manufacturing process flow for packages that include one or more glass layers that include patterning features, such as electrically conductive traces, RDLs, and vias within the packages. In embodiments, a package may include a glass layer with a first side and a second side opposite the first side, where the glass layer is a dielectric layer. The package may include another layer coupled with the first side of the glass layer, and a pattern on the second side of the glass layer to receive a deposited material in at least a portion of the pattern.

A laminated glazing includes a first structural ply assembled with a first glass sheet of 0.5 to 1.5 mm thickness by way of a first adhesive interlayer, the first glass sheet forming a first exterior face of the laminated glazing, the face of the first glass sheet oriented toward the first adhesive interlayer bearing a first conductive heating layer of 2 ngstrms to 500 nm thickness, and the first conductive heating layer including flow-separating lines of 0.05 to 0.2 mm thickness spaced apart by 8 to 20 mm.

A heating plate 10 includes: a pair of glass plates 11, 12; a conductive pattern 40, 70 disposed between the pair of glass plates 11, 12 and defining a plurality of opening areas 43, 73; and a joint layer 13, 14 disposed between the conductive pattern 40, 70 and at least one of the pair of glass plates 11, 12; wherein the conductive pattern 40, 70 includes a plurality of connection elements 44, 74 that extend between two branch points 42, 72 to define the opening areas 43, 73; and a total value of lengths of straight line segments connecting the two branch points 42, 72 is less than 20% of a total value of the plurality of connection elements 44, 74.

A method for producing a composite pane with a functional element having electrically controllable optical properties, includes providing a first pre-composite including a first thermoplastic laminating film and a first barrier film as well as a second pre-composite including a second thermoplastic laminating film and a second barrier layer trimming and the pre-composites substantially to the dimensions of the composite pane, forming a circumferential back cut in the barrier films, arranging the first pane, the first pre-composite, a functional element, the second pre-composite, and a second pane one over another in this order, the barrier films being arranged sheet-wise directly adjacent the functional element, surrounding the circumferential edge of the functional element, and touching one another sheet-wise at least in sections in an overhang u protruding beyond the functional element, and bonding the layer stack.