LCD modules are becoming more and more popular and practical over CRT displays because of its many advantages such as low cost, environmentally friendly, safer to use, lightweight and compact. LCD displays also last longer than other types of displays and they are easier and safer to dispose after use.

The LCD display module manufacturing process is a composed of several complex steps. To make this simple, two glass plates are aligned and fixed together to create a panel structure. After this, it is filled with liquid crystals, closed and applied with polarizer.

LCD modules have different specifications depending on the following: resolution, viewable size, viewing angle, brightness and contrast ratio, etc. It is important to know the requirement for each specification before shopping for and LCD module. Resolution refers to the horizontal and vertical pixel size of the display. Viewable size and viewing angle refers to the active display area and the direction of viewing, respectively while the brightness and contrast ratio affects the amount and intensity of light displayed. Other factors that affect the specification of an LCD module, specifically those that display active images are the refresh rate and response time.