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The LCDs put in projection systems are most often small reflective or transmissive panels set off by a forceful arc lamp source. A number of lenses enlarges the reflected or transmitted image and displays it on a screen. In front-projection systems the LCD is situated on the side of the screen as the viewer, but in rear-projection systems the screen is lit from behind. Projectors of higher expense and capability may utilise three separate LCD panels, casting separate red, green, and blue images that combine to make a coloured image on the screen.

The increasing demand for film displays has had a growth in emphasis on the switching speed of liquid crystals. This has necessitated the manufacture of items utilizing smectic liquid crystals, some types of which emit a quicker electro-optical response than nematic liquid crystals. The surface-stabilized ferroelectric liquid crystal (SSFLC) display is at this point the most developed smectic device. Within it the liquid crystal molecules are arranged in layers that are perpendicular to the substrate planes, which are distanced by one or two micrometres, and inside the layers the molecules are on a slant, as shown in the figure. The host liquid crystal possesses optically active molecules, and a subtle outcome of the optical activity and the slant of the molecules is the presence of a permanent charge separation, or ferroelectric dipole, likeable to the ferromagnetic dipole of a magnet. The direction of this dipole is perpendicular to the tilt direction of the molecules and within the plane of the layers. Thus, there is a permanent charge separation over the liquid crystal layer in the SSFLC, and its sign is directly attracted to the tilt direction of the molecules. An applied voltage of the corresponding sign can reverse the direction of this dipole in tens of microseconds and therefore reverse the tilt direction of the molecules. The corresponding change in optical properties can effect a change from light to dark if one or more polarizers are employed.

SSFLC devices have been publicized for large passive-matrix displays, but their expense and complex detail has impeded them from having any particular progress on the market. Small transmissive and reflective active-matrix SSFLC displays, however, have shown some possibility for use as parts in projection systems or as viewfinders in digital cameras. Their fast reaction allows them to be employed in time-sequential colour systems, in which dear colour filters are emulated by a coloured backlight that flashes red, green, and blue in fast pace (approximately 100 cycles per second). For example, the liquid crystal could be switched to a transmissive state during the red and green periods but to a nontransmissive state during the blue period, with the end result that the eye sees an average of red and green light, or the colour yellow.

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