A valve for use with an inflatable cushion having individual inflation zones including a slide housing positioned between two outer casing halves. A light-emitting module 100 is structured such that a plurality of element columns, each composed of light-emitting elements 120 arranged in line, are mounted on a substrate 110, and each element column is individually sealed by a separate sealing member 130. In particular, planar particles disperse more easily, form much denser coatings, and anneal into fused, dense films at a lower temperature andor time than their counterparts made from spherical nanoparticles. The main metal layer has at least one pair of current path regions.