Most cinema playback equipment used in the majority of projection technology, the projection system uses reflection imaging principle, the projected light reaches the center of the screen and the surrounding distance is not the same, and the projection tube of the three primary colors light source position is different, this feature Resulting in the projection screen there is a small amount of pixel defocus and color trim. In addition the movie screen with a white screen, resulting in reduced screen contrast.
The LED display can achieve high brightness is one of the most prominent features, which generally use the principle of self-luminous, each pixel independent of the light-emitting location-based imaging difference is almost zero, and the LED screen can use all-black screen background , So that the image contrast better performance. Coupled with the self-luminous features that allow LED screens to be imaged in brighter indoor lighting environments. As a result, the hardware requirements for the auditorium environment are greatly reduced.
LED small-pitch display can be seamlessly spliced through the theater to break the restrictions on the area of play, after the pitch is greatly reduced, the resolution can be DLP and other projection technology rival. However, it is not perfect, small pitch LED screen and projection theater the same size compared to imaging, the cost is relatively high, the initial investment is relatively large, the level of detail is currently not up to "film" level. Small pitch LED screen into the movie market, in addition to breaking the technology and cost, but also consider how to convince the filming, late, distribution, cinema and other links to abandon the overall DLP choice LED.
