A liquid crystal module is disclosed. A second transistor is comprised of a second p+ source region doped into the second side of the top of the pillar and serially coupled to the top drain region for the first transistor. In addition, an elastic pressing or push rod is disposed inside the sand belt and on a backside of the frame in order to frequently push the sand belt outwards and thus to keep the sand belt in a tightened state when the belt sander is sanding. The phosphor has the general formula:.