LCD projection technology

LCD (LiquidCrystalDisplay) projection imaging modality for the transmission , the imaging device is a liquid crystal panel , is a passive projection. It uses external sources ( metal halide or UHP lamp ) , so long as the lamp power can be improved to enhance the brightness. It uses LCD projection technology is relatively mature , with good color reproduction , brightness and contrast are better than CRT rear projection. With the continuous development of technology, the lamp life currently plaguing the industry issues will also be a better solution . Currently Tsingtek Character LCD Module projection did not become mainstream in its main reasons for the high cost . Also LCD rear projection, limited to works on its reasons , its warm-up and cooling after shutdown takes time , you can not do that with the open with CRT rear projection off .

LCD projector LCD panels in accordance with the number of slices into three-piece and monolithic . Currently, three-piece projector Tsingtek 5.7 TFT display module panels are the main types of projectors , the schematic diagram below:
Three -LCD panel of the projector optical system principle is light emitted by the source is formed R, G, B three beams by the beam splitter , respectively, is transmitted through the R, G, B three-color liquid crystal panel ; the control signal source through the A / D after conversion modulation, to the liquid crystal panel , the liquid crystal cell by controlling the opening and closing to control the R, G, B three-color light -off path , and three colored light path through the aggregate , the color combiner prisms together , the final after the projection lens , forming a color image on the screen .