A Note on DLP TVs
Rear-projection DLP television displays are based on a proprietary semiconductor technology developed by Texas Instruments—the Digital Micromirror Device (DMD). This chip contains an array of thousands of microscopic mirrors with widths less than that of a human hair. Each micromirror rests on a hinge, which articulates it 10° back and forth on its axis. This allows the micromirrors to modulate light by either reflecting it through a color wheel, a projection lens, and, finally, on to a screen, or by deflecting it onto a light absorber. Each micromirror is responsible for mapping one pixel, so the number of micromirrors in a DLP TV display is equal to its resolution (e.g., 1024x768 = 786,432 pixels or 786,432 micromirrors).
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