Active matrix liquid crystal display
An active matrix liquid crystal display (AMLCD) is a type of liquid crystal display which employs an array of individual pixels, each controlled by an electronic switch.[1] They offer high-resolution, a wide range of colors, and low response times. These displays, typically measuring no thicker than 4 inches, are composed of three basic components: polarizing sheets, liquid crystal cells, and a thin film transistor (or TFT, which made of many small transistors and capacitors).[2] Unlike passive matrix LCDs (which have a separate circuit for each cell), Active matrix LCDs activate each individual cell (representing one pixel) by activating a particular column and sending an electric current through a particular row. As long as that charge remains in the cell's capacitor, the back light is allowed to shine throw, so that use user sees a speck of light at a specific color. The time required to release that charge and activate again at a different color is known as the refresh rate.[3]
