New LCOS Projector

Characteristics of LCoS technology and development
Abstract
LCoS is a fashionable generation of TFT-LCD liquid crystal display products. Projected to 2005, LCoS rear projection TVs in about 20% mall share. This treatise describes the technical functions, key technologies, petitions and evolution prospects.
LCoS belong in new generation LCD production of TFT-LCD.LCoS be possessed of about 20% market share in rear projection television, prefigured to 2005 year. Its technology characteristics, key technology, application domain and development foreground introduced in this paper.
1. Introduction
LCoS (Liquid Crystal on Silicon, LCoS) is a liquid crystal display (LCD) of the emerging technology, Aurora Systems integration by the integrated circuits and liquid crystal semiconductor CMOS conveniences of the two technologies, amplified in 2000 a high-resolution, low price of a new reflective display technology. It is a system on the LCD instantly to the new silicon-chip liquid crystal display. Silicon chip can be active-matrix thin-film transistor LCD (AMTFT), the external pedal circuit and control circuit, and all other systems on the above as a piece of LCD substrates, and the other as a common electrode coated with a transparent conductive wafer sealing glass substrates attach into a thin box, into the liquid crystal display can be made of liquid crystal on silicon (LCoS).
we all know, LCD has worked through a TN type,Gucci Shoes UK, STN type, and TFT-type and several generations of updates, they are in the LCD's own exertions. And the current LCD and LCoS sucked integrated circuit (IC) into one, which is LCD, no mistrust, is a new scientific discovery, it is a new generation of TFT-LCD liquid crystal display products.
2.LCoS the technical characteristics of the structure
LCoS is the manufacturing of semiconductor silicon driving panel (also known as CMOS-LCD), and then in the silicon chip through the grinding mill level, and deposited on aluminum (Al) as a mirror to form a CMOS substrate, then the CMOS substrate and wrapped with a perspicuous electrode on glass substrate adhesion, and into the liquid, the package from. LCoS make sure its structural characteristics with accustomed LCD has a large digit of another points, with some LCD and unmatched by anyone additional display technology features.
2.1 Intelligent
the LCoS display is a fashion of the liquid crystal display (LCD) and large scale integrated circle (LSIC) made one of the display, and even the set of information processing system as a whole, so the display appliance itself has some smart features, it can be phoned intelligent display. Intelligent display and representation combined the maximum advanced chips, not only can handle exceedingly complicated calculations, merely also have the functions similar to PC. Not the PC is value a PC, it will no longer be smart display computer marginal equipment, and gradually rose to the fashion, with the microcomputer on an equal footing.
LCD and LSIC are twin brothers. LCD's light, thin, small, micro (mean power) to display the characteristics of the information display of the private, but the end outcome of private attempts for the LSIC roomy market prospects. 70 years of the 20th centenary, the rise of the individual as the symbol calculator, LCD and LSIC mutual promotion and rapid development,Cheap Gucci Trainers, and gradually formed the world's largest industry. 90, LCD and combined with the LSIC anew to achieve a portable computer (PC) The rapid development.
LCD and LSIC of the dual interdependence, reciprocal improvement and improvement. LCD left the LSIC, the light, svelte, small,Gucci Trainers, micro-features can not be achieved, whether the LSIC can not be a large number of wealthy and timely processing of information in a timely and simple to use and accurate LCD display to the people's vision, have greatly outweighed its performance. They must be combined into one can only melodrama a character in full. Unfortunately as a long time they are 2 different products.
LCoS will eventually combine them into a product of, LSIC to increase the comprehension function LCD, LCD so LSIC intelligent features more directly to the folk of the visual display.
2.2 external wire fewer connection simple and easy to machine convergence

common external LCD has a large number of dense lead, such as a lattice of 1024 × 768 pixel LCD will a 2592 external leads, to the whole assembly a lot of inconvenience, and LCoS system because it is the LCD on the silicon chip, LCD row and col are passed Lead in silicon semiconductor technology connected within the IC, so remain in only a few pieces of data outside the control lines, timing lines and power lines. Leverage a common wharf interlocked with the front-end circuit is quite simple.
2.3 smaller, more contract exterior and cheaper LCD
common needs in the manufacturing process lithography on a glass substrate, made of pixels. To 0.28mm pixel system ordinarily is not easy, because the system needed at each pixel on an active device. But LCoS pixels are made in the silicon chip, layer processing using LSIC technology can be made as to 4μm like the following. Therefore, only the number of zeros in one-inch silicon layer can be made of 1024 × 768 pixels, or 1920 × 1240 pixel density phalanx display products. Density mushrooms the sum of information displayed, while the volume is dwindled (up 0.35 to 0.5 inches), matters and costs will naturally be greatly reduced. LCoS driver IC can be entirely made in the external circuit such as CMOS substrate, dwindle the number of external IC and package costs, and volume decrease. LCoS display the current trial of fatigue costs only 50 greenbacks. 2.2/1280 × 1024 pixel matrix of the LCoS chip amount was $ 150, compared with the same resolution of the LCD and digital micromirror (DMD) is much lower in the future there will be a bigger price cut.
2.4 pixel openings rate, high resolution

LCoS solve the mediocre TFT-LCD pixel hole percentage is not high technical problems. Pixel aperture ratio is the efficient display area of ​​the pixels on the proportion of size. TFT-LCD to be general in the district of ​​each pixel among an area set aside to make field-effect transistors and capacitors, as is common in the TFT-LCD above glass substrate made of amorphous silicon film, amorphous silicon or polysilicon FET on the making layer, for the electron mobility of amorphous silicon or polycrystalline silicon is low, so the FET larger share of athletic devices, and LCoS using silicon, the electron mobility than amorphous silicon or polysilicon is many higher,Gucci Shoes, so its size can be made very small, so the aperture ratio can be very tall, approaching 96%.
the LCoS driver circuit of transistors and are made on the silicon substrate, the reflecting surface is located beneath the surface area is not occupied, so the only pixel breach beginning area was occupied,Gucci Wallet UK, not as transmissive TFT LCD, and the wire are occupied by open space, so in theory both the aperture ratio or resolution, LCoS are higher than the transmissive LCD. Way as to control the use of semiconductor LCoS resolution, it is high resolution, usually to SXGA level (1280 × 1024 pixels), high resolution has led to a smaller screen pixels, so picture quality matter-of-fact ecology. High resolution can be achieved with the semiconductor manufacturing process is quick and nice, easy-to improve the resolution, principally for portable Advisory equipment. So distant, its manufacturing process technology has matured.
2.5 high
LCoS light can improve the efficiency of light utilization. It namely similar with the LCD projection exhibit, the chief difference is that LCoS namely a reflective imaging, it is up to 40% alternatively more utilization of light,Mens Gucci Boots, and digital light processing (DLP) fairly, and transmissive LCD is merely 3 to 10% only. As we all understand, LCD display is passive, * prepared the external surroundings apt fulfill the display of light, before and later natural LCD is equipped with a polarizing film in, LCD is the * alternate off polarization modulation to achieve the display. Polarizing film is * to produce polarized light absorption, it is made of LCD light displacement rate is quite cheap, the mean transmittance TFT-LCD was only a few percent, accordingly, to show apparently behind in the TFT-LCD be fitted with a mighty backlight. Power expense of the backlight is quite to the TFT-LCD micro-power specifics of the detriment of Yi to do.
LCoS back substrate using silicon substrate, it is mostly made of reflective LCoS. Coated with silicon pixel and the optical reflective film, can be full of light reflected, accordingly most of the episode light Jieneng be accustom. LCoS reflective imaging optical efficiency, saving not only encounter environmental protection requirements, but also for portable IT products cater high-resolution large-screen surface. Such as mobile phones, handheld computers (PDA) and other portable products, the Internet is a important obstacle to the screen is too small, the resolution is not high, if the Structure of myopia can be accustom to solve this problem.
use made of ordinary TFT-LCD projection TV and the transmission is made with a reflective LCoS projection TVs, compared with a reflective LCoS projection TV made only 1 / 5-power light source can be won for ordinary transmissive TFT-LCD projection television several times brighter display. A 400W light behind through the reflective LCoS type 74 inches high-definition TV (HDTV) of the brightness can be better than the CRT's sunshine. This is the other projection television can not reach the level.