Technology Behind E-Writing Pad Custom order pads are message pads which are customized as per the liking of the buyer or customer. These are a number of sheets of paper fastened together along one edge. Electronic tablets are all the rage, which works on advanced liquid crystal technology. Liquid crystal displays, also known as LCDs, contain molecules ordered in a particular orientation that interact in complex ways with light and electric fields and are built upon principles discovered in the late 1800s. The e-Writer works on the principle of anisotropic flow, a unique feature of cholesteric liquid crystals, in which crystals flow at different rates, depending on the direction of pressure being applied. When a thin film of cholesteric liquid crystal is sandwiched between two sheets of specialized plastic, anisotropic flow causes the molecules to order themselves to reflect light in those places where a stylus touches the plastic sheet.
The liquid crystals are surrounded by polymer pillars, which control flow, resulting in excellent line sharpness. The written image is retained until electrically erased with the push of a button. In electronic erase, the flash of an electric field rearranges the molecules so that they are less reflective.