3.5 DLP (Digital Light Processing) Projection
DLP projectors utilize tiny mirrors laid out in a matrix on a semiconductor chip, known
as Digital Micromirror Device (DMD). Each mirror corresponds to a pixel and can tilt to
reflect light towards or away from the projection surface. DLPs use Pulse Width
Modulation (PWM) to create different intensities of different colors, which is to some
extent similar to how Plasma displays worked.
Although DLP can largely avoid the sample-and-hold artifacts commonly seen in most
other modern display technologies, it is not without its own quirks. For example, the use
of temporal dithering to create images can introduce a different set of motion artifacts.
Thus, while DLP's motion handling is generally better than sample-and-hold methods, it
does not perfectly replicate the experience of film projection.