Simple LCD cell gap test system

From the first generation in 1991 to the current tenth generation, liquid crystal display (LCD) monitor capacity has been expanding rapidly. With its output value increasing intensely in recent years, LCD monitor manufacturing has become a landmark industry in the 21 century [1]. LCD as a complex manufacturing process, the liquid crystal cell gap and the measurement of the amount of liquid drops play a key role in affecting optical properties of the background color and response speed of LCD. So it is significant to measure the cell gap of liquid crystal. A simple and feasible approach to measure cell gap is illustrated in this paper, and the relevant testing equipment is set up. It' demonstrated to be validated and uniform detection.