Method for preparing planar heating element and planar heating element prepared by the method

Abstract

The present invention relates to a method for preparing a planar heating element and a planar heating element prepared by the method and the purpose of the present invention is to form a heating layer with excellent electrical characteristics by coating a glass plate with carbon nanotube (CNT) ink and improve electrical stability by increasing the contact surface area with an electrical path through a heating layer with the small physical properties of carbon particles, while minimizing contact resistance with an electric wire. The method for preparing a planar heating element according to the present invention comprises perforating step of drilling at least one hole in a cut glass plate for protruding a wire; printing step of printing conductive materials for allowing electricity to flow on the glass plate; and coating step of coating a heating layer that generates heat on the glass plate.

Dependencies are inferred from the claim text.