A paper sheet processing apparatus that can detect in an inexpensive way that a bill housing part is full with bills. The thin film transistor array panel includes: a first substrate; a gate line and a data line formed on the first substrate; a step preventing member formed on the data line to at least partially fill a volume positioned between the data line and a pixel electrode; and a spacer formed on the first substrate, wherein the spacer and the step preventing member comprise the same material. Dielectric heating may be performed on the pad opened by etching the protective film. In the presence of a patterning compound, the tip is used to apply a high force to the substrate to remove molecules of the resist from the substrate, whereupon molecules of the patterning compound are able to attach to the substrate the form the desired pattern. The broadcasting station receives and gathers data from numerous viewers through a computing unit linked to the Internet. The color filters may be on the reflective plates, and the PDLC may be between the first substrate and the second substrate.