DLP LCD PDP three kinds of large-screen display technology principle explain

After ten years of development , large-screen systems have been widely used in various fields , but due to large-screen products have a certain degree of technical difficulty and high technology content, so far, there is still a large part of for the large-screen display users know little about the product , so the projection of the times network users should be required to popularize something about today's large-screen market, three major technical knowledge , because only by understanding this can we better understand the product.
From a technical type to points, then , large-screen products can be divided into the mouth , DLP rear projection display unit , Character LCD Module liquid crystal splicing unit and PDP plasma splicing unit three categories. With their advantages , these three technologies currently in the market competition is very close but in the end these three technologies is better, I believe after reading the following description , your mind will naturally clear.
Patchwork " and no one can " DLP rear projection display
DLP 's full name is "Digital Light Procession", Chinese meaning is digital light processing , which means that this technology through the digital video signal to be processed first , then put out the light projection . That specific point is , DLP projection technology applied to digital micromirror chip (DMD) as the key processing elements in order to achieve digital optical processing.
The principle is that through UHP lamp emits cold light through a condensing lens , the light through Rod homogenized , after treatment, the light passes through a color wheel will be divided into three RGB primary colors of light , color and then projected by the lens on the DMD chip , the last after a reflective projection lens image on the projection screen .
DLP rear projection display wall by a plurality of display units splicing , its main feature is a small patchwork , patchwork minimum it can reach tenths of a millimeter , can be truly "seamless " stitching, which is the other two technologies LCD and PDP can not match and the .
Of course, DLP splicing also has its drawbacks . As a light source DLP splicing is from the bulb , causing its power consumption, heat dissipation is high, but after a period of time there will be decrease in brightness , causing the user must constantly replace the lamp to maintain the initial display, and its unit box the body, the installation will cause some trouble , lcd module etc., to the user's inconvenience.
But with the splicing technology continues to evolve, the current DLP splicing has been resolved frequent replacement bulbs, power consumption, heat dissipation higher range of issues , which have benefited from the LED light source added . After using a LED light source DLP splicing unit , not only in life to get on a larger breakthrough, while in color with power and other aspects of revolutionary change , so DLP splicing remain market-leading advantage.