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» 3LCD Microdisplay Technology
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September 21, 2006
3LCD Microdisplay Technology3LCD is one of a number of contemporary flat panel display technologies including; Plasma Display Panel (PDP), Organic Light Emitting Diode (OELD), Thin-film Electroluminescent (TFEL) and Field Emission Display (FED). Using microdisplays provides manufacturers with a projection solution for increasing resolution while maintaining compactness. Beginning in 1995, 3LCD technology has been adopted by numerous front projector and later (2002) rear projection TV manufacturers (Fujitsu, Hitachi, Panasonic, Sanyo and Sony) for its compactness and image quality. 3LCD TechnologyBriefly, 3LCD technology is a video projection system that uses three LCD panels to produce an image. It is marketed as having three key advantages:
More precisely, 3LCD is an active-matrix, HTPS (high-temperature polysilicon) LCD projection technology. It inherits sharp images, brightness and excellent color reproduction from its active matrix technology. Deeper blacks are contributed by the HTPS technology. To understand 3LCD requires an understanding of these evolutionary technology building blocks.
Liquid Crystal DisplayLCD is a termed a transmissive technology as it requires a backlight light source (generally an ultra-high-pressure mercury lamp). The light produced by the backlight is regulated by “liquid crystals”. The liquid crystal solution is sandwiched between two sheets of a polarizing material (glass or plastic). Varying the electric current passing through the solution changes the crystals opaqueness allowing the desired image on the display screen to be produced. Control of the liquid crystal layer is by either passive or active matrix technology. Passive matrix technology employs a grid system with horizontal and vertical wires to direct electric current to a specific location. It’s a less expensive technology with slower response time, less color differentiation, and poorer picture quality when compared to active matrix displays. Active matrix technology (also called TFT (thin film transistor) produces sharper, clearer images. As mentioned, 3LCD technology uses active matrix LCDs. HTPS (high-temperature polysilicon) Projection SystemHTPS uses microdisplays and tri primary color (red, green and blue) lighting. The primary colors (which make up the elements of each pixel of a display screen) are produced through filtering of white light into separate wavelength components (colors) through dichromic mirrors. Each color light passes through its own small (from 0.73 inches) microdisplay LCD panel which creates the required image. A prism merges all three images back into a single image. Optical lenses are used to enlarge the images from the prism to a suitable display size. Continued Development3LCD projection technology development continues with improvements like the recent introduction of HTPS panels using an inorganic alignment layer for improved contrast levels and deeper blacks. Further Reading3LCD RPTV’s Sony KDF-50E2000 50 inch 3LCD RPTV 3LCD Projectors Panasonic PT-AE1000 3LCD projector
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[...] Read more about 3LCD Microdisplay Technology. [...]
Pingback by Presentation Technology Reviews » Panasonic PT-AE1000 3LCD Projector Review — November 13, 2006 @ 4:39 pm
[...] The Panasonic PT-AX100 incorporates LCD microdisplay technology where the complete display image is produced by a microdisplay chip which is generally only some 70mm squared. Microdisplay chip technology allows manufacturers to provide high resolution while maintaining a compact form factor. For the PT-AX100, Panasonic have utilized the advanced 3LCD Microdisplay Technology which uses three microdisplay LCD panels (one per primary color) to produce an image. 3LCD is marketed as having three key advantages; [...]
Pingback by Presentation Technology Reviews » Panasonic PT-AX100 3LCD Projector Review — November 28, 2006 @ 5:19 am
[...] Probably the biggest feature of the PowerlLite Pro Cinema 1080 is the use of 3LCD projection technology. 3LCD technology was initialted in 1995 and adopted by numerous front projector manufacturers (Fujitsu, Hitachi, Panasonic, Sanyo and Sony) for its compactness and image quality. [...]
Pingback by Presentation Technology Reviews » Epson PowerLite Pro Cinema 1080 Home Theater Projector — December 22, 2006 @ 11:53 am
[...] Epson announced on December 12, 2006 their development of a new high-temperature polysilicon (HTPS) liquid crystal midrodisplay panel to boost performance of 3LCD technology projectors and LCD rear projection TVs (RPTV). The new panel, measuring only 0.7 inch or 1.9cm diagonally, supports full 1080p high definition. [...]
Pingback by Presentation Technology Reviews » Epson’s Next-Generation HTPS Microdisplay Panels — December 26, 2006 @ 2:18 pm
[...] BenQ have launched their W500 3LCD projector which they have targeted at home theatre enthusiasts. 3LCD technology uses three LCD panels to produce an image. It has advantages such as; a brighter picture, more natural colors and greater resolution. [...]
Pingback by Presentation Technology Reviews » BenQ Launches W500 3LCD Projector for Home Theatre Enthusiasts — May 3, 2007 @ 9:32 pm