Abstract: Apparatus and methods for attaching a heating element to a glass substrate. The heating element is formed of a plurality of conductive polymer thick film inks screen printed on the substrate. The heating element includes a resistive strip or resistor, conductive strips or conductors, and terminal portions, which form part of an electrical circuit. Electrical power applied to the terminal portions causes current to flow through the resistive strip, which generates heat through resistive heating. The heat is transferred to the substrate. The method of applying the heating element to the substrate includes, in one embodiment, screen printing polymer thick film materials onto a surface of a glass substrate to form the circuit conductors and resistive elements and surface mounting other components of the circuit on the substrate.

Abstract: An apparatus for providing lighted areas on a surface. The apparatus comprises a glass substrate having at least a first surface that includes a substantially clear substantially conductive layer, and a second surface that does not include a substantially clear substantially conductive layer. The present apparatus also includes a polymer thick film phosphor ink layer applied to the first surface of the glass substrate, a polymer thick film dielectric layer applied to at least a portion of the phosphor ink layer, and a polymer thick film conductive layer applied to at least a portion of the dielectric layer. Further, the apparatus includes power connectors for connecting electrical power to the polymer thick film conductive layer and to the substantially clear substantially conductive layer of the glass substrate. When power is applied to the power connectors, the polymer thick film phosphor ink layer illuminates and light substantially shows through the second surface of the glass substrate.