Digital Light Processor. Instead of shining a light through an LCD panel, DLP uses a computer chip with micro mirrors on its top surface, with one for each pixel. The projector bulb is shone onto this, and the mirrors are moved to turn each pixel on or off. The reflected image is then shone through a spinning wheel with coloured translucent panels around the edge, red green, blue and white.
The image is typically clearer than an LCD unit, a lot of this due to the fact that the crystal lattice structure of the LCD panel is not being projected too. They also typically have better contrast too.
If i were in the market for a big display, this would be the one i'd choose. Look put for home cinema orientated units that use a 3 colour wheel (no white), and one with a new generation 12 degree DLP (the micro mirrors swivel through 10 degrees for the first generation chips).
Make sure you try and get a demo of one in action before splashing out on a display, i think you'll be very impressed.
And yep, its a Texas Instruments technology. All DLP projectors use their chips.