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Digital Light Processing (DLP) is a video technology created by Texas Instruments that is used for front and rear projection units. DLP technology is common for rear projection in TVs and it is also used in front projectors for units designed for businesses and classrooms. Presently, DLP comes in two major forms: 1-chip DLP and 3-chip DLP.
Digital Light Processing makes use of micromirrors, called a Digital Micromirror Device, to reflect light and color onto a screen. These micromirrors are positioned in a semiconductor chip and are very small. Generally, a micromirror pitch may measure less than 5.4μm. Each of these mirrors projects one or more pixels in the image. The number of mirrors generally correspond to the resolution of the projected image. The movement of the mirrors allows the DLP device to create colors and gray shades that can form video images. All DLP chips are produced by Texas Instruments.
DLP can also be used as a process within 3-D printing. It takes a design that has been created in 3-D modeling software and prints the 3-D object by projecting the object, one layer at a time, onto a liquid polymer and hardening it.