Abstract: For enhancing the contrast of a picture on a projection screen derived from a liquid crystal display, the analyzer which is normally part of the liquid display unit is incorporated either in front of or in back of the screen relative to the viewing area or may constitute a layer between the front and rear portion of the screen. In any of these positions, the presence of the analyzer will result in darker dark portions and therefore in enhanced contrast. When used in front of the screen relative to the viewing area, protection of the lenticular surface also results.