Wednesday, December 29, 2010

Weak current College】 【splicing mainstream technology introduction.



Liquid crystal mosaic wall

Liquid crystal mosaic facade is the CRT curtain wall, DLP screen wall, PDP after the rise of the curtain wall and a wall mosaic products. It to have high-definition, wide viewing angle, high brightness, long life and other advantages which gradually accepted for users in the field of large-screen display shows rising gradually.

Current LCD display wall most common LCD panel size of 19, 20, 40 and 46, it can according to customer need arbitrary splicing, Samsung latest ultra vision series products can reach 250 units of mosaic; the use of backlight glow, life up 50000 hours. In perspective, because most of the LCD, as DID the LCD level Visual angle up to 178 degrees.

Secondly, the dots in the small LCD, physical resolution can easily achieve the high-definition standards; in addition, the LCD slim and light, typically, a 40-inch LCD, dedicated weighs only 12.5KG, thickness 10 cm, other display devices are incomparable.

Small power consumption, low calorific value is also a large liquid crystal mosaic. General of the small size LCD power less than 35W, even more than 40 inch LCD screen, its power but only about 150W around one-third to one quarter of plasma and eliminating downtime, low maintenance costs.

In the past, because the LCD backlight glow products still used cathode vacuum tube (CCFL), its both ends of the filament lamp tube and pipe, block limits the size of LCD panels, leading to liquid crystal mosaic wall there is a large slot, to a certain extent affect the Visual effect. But as the Samsung Super view LCD display wall of publication, that "fatal" shortcomings have been completely overcome, their only 6.7 mm mosaic stitching the LCD, the real ushered in the field of seamless era. LCD DLP stitching technology replace and PDP's time has come.

DLP mosaic wall

DLP mosaic system uses digital signal processing technology to DMD (DigitalMicromirrorDevice i.e. digital micromirror device) as light valve imaging device, the use of digital light processing technology for your computer and video signals, driven DMD optical system, through the projection lens for large-screen image.

DLP mosaic wall most major characteristic is the screen size. Currently on the market, the most common unit size is 50, 60, 67, 84, 100 of greater size of the element is part.

However, the DLP mosaic system there are still many shortcomings, because DLP display using more than one display unit stitching, reaches a certain mosaic number appears non-uniform color and brightness, in recent years, the DLP vendor in seeking to resolve this issue, and achieved good results. However affect DLP mosaic wall is the biggest factor is the product of power consumption, DLP internal glowing bulb 6000 hours of continuous work--8000 hours later, the brightness decreases, so as to affect the display effect, at a later stage must put the cost of replacing the lamp, maintaining a relatively high. In addition, and thickness, the footprint is its biggest drawback.

PDP mosaic wall system

PDP (PlasmaDisplayPanel) plasma display is a display of gas discharge. At present, domestic and foreign, for mosaics of plasma panels are mostly from Korea and Europe Lian company the European Lian production of 42-inch plasma panel M-PDP, Europe Lian unique DZF (Dead-ZoneFree) process. Plasma display slimmer, smaller surface active, suitable for wall mount, and thus fit in any area of the site installation.

However, PDP (PlasmaDisplayPanel) plasma display product pixel gap, reliability compared to other products, power consumption is relatively high, life expectancy is natural enough, use 5000 ~ 10000 hours after screen brightness will decay to half, and at an altitude of 2500 m above the normal work; in addition, displays the computer image or a static image is easy to burn.



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