For more than a decade, the domestic splicing large-screen market has experienced a good momentum of rapid development due to the test and accumulation. As we know, PDP, DLP, LCD splicing and other three splicing technologies occupy the mainstream in the big screen market. Large-screen LCD splicing technology is an emerging technology that has emerged after PDP and DLP splicing technology. With PDP and DLP splicing screens, it has a series of high definition, high brightness, high color saturation, high contrast and high resolution. The high-definition display advantage is highly praised and respected by the large-screen market, and is widely used in many fields such as security, advertising media, entertainment culture, command center, and coal mines.
The full name of DLP is "Digital Light Procession", which means digital light processing in Chinese, which means that this technology uses digital micromirror chip (DMD) as the main key processing component to realize digital optical processing. The principle is that the light emitted by the light bulb is divided into three primary colors of RGB through a color wheel, and then the color is projected by the lens on the DMD chip; the digital signal of the digital micromirror wafer is converted into continuous light by the method of synchronizing the signals. For the gray scale, the colors are expressed in three colors of R, G, and B, and finally the reflection is imaged on the projection screen through the projection lens.
From the technical principle of DLP, it has the following advantages:
Fully digital: DLP technology provides a achievable projection method for displaying digital signals, thus completing the all-digital infrastructure.
Accurate grayscale: Its digital nature allows for fine image quality and color reproduction with precise digital grayscale.
Reflective advantage: Because DMD is a reflective device, it has more than 60% light efficiency, making the DLP system more efficient.
Seamless image advantage: Due to the rear projection method, the image can be 100% projected on the screen. Through the special processing of the screen edge, the gap between the screens is less than 0.5mm, which is commonly called seamless stitching.
Reliability: DMD has an effective service life of up to 100,000 hours.
Of course, DLP stitching also has its drawbacks. Since the light source of the DLP splicing is from the bulb, it consumes a large amount of power and has a high heat dissipation, and the brightness is lowered after a period of use, so that the user must constantly change the bulb to maintain the original display effect, and its unit box The body is large, it will cause some troubles during installation, etc., which brings inconvenience to the user.
However, with the continuous development of splicing technology, DLP splicing adopts DLP splicing unit after LED light source, which not only has a great breakthrough in service life, but also has revolutionized changes in color and power consumption. Let DLP splicing continue to maintain the market leading edge.
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