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Professional in producing projection screens over 11 years



Application of small-pitch LED display in movie theaters_indoor high-definition LED display|full-color LED display

Can a full-color LED display be used in a movie theater? Can the indoor high-definition LED display have a prominent advantage in the movie market? According to statistics from Huaze Optoelectronics, the contribution of Chinese films to the national economy is increasing and has become the main engine of global box office growth. Last year, the overall scale of the industry driven by movies exceeded 68.7 billion yuan, indirectly providing no less than 500,000 jobs. With the rapid development of the movie market today, large LED screens are rarely seen in theaters of various lines that are popular with urbanites. Facing the relative blankness of the movie market, can the LED display, which integrates many broadcasting advantages, get a share of the huge movie market? The advantages of small-pitch LED displays in theaters are obvious. Facing the relative blankness of the movie market, indoor high-definition LEDs Does the display have enough advantages to compete with traditional theater playback equipment and enter the movie playback market? As a novel electronic dynamic graphic dot matrix display, the small-pitch LED display is a kind of automatic display that can be placed in the masses. Continuously working information release media is a wonderful embellishment that can heighten the atmosphere and decorate the environment. This more realistic way of expression will provide the audience with a more interactive, more vivid and interesting way of participation, and meet the audience's subjective needs. Compared with the traditional movie playback system, the traditional movie theater uses a projection system, and there will be a certain degree of defocusing. Under normal circumstances, even if it is adjusted well, the amount of defocusing of 1-2 pixels is very common. This is because fundamentally speaking, the distance projected from the projector to the center of the screen is different from the distance projected to the four corners. The principle of projection also determines that there are three primary colors in the projection tube, and their arrangement is different in position. For example, when arranged horizontally, the natural geometric shape projected on a flat screen, even if various techniques are used to correct and correct As a result, it is very common to have 2-3 pixels of residual distortion. The direct effect of this misconvergence is the color flanging. When projecting movies, the refresh frequency of the projector is generally 48Hz, which may also produce a little flicker. At the same time, the screen is reflected light, so a white background must be used, which results in low contrast and low contrast. The film playback of the small-pitch LED display is digital to digital, and it is all an electronic process. The color of the LED light does not change for a long time. In addition, the LED screen is self-luminous, there is no screen, no lens, no reflection, no glare , And it is a black background, so the contrast is much greater, and the contrast of the image is also much greater. According to the actual measurement results, the contrast of the LED display screen will be several times that of the screen even if it is an indoor type, so the contrast of the image will be much better. This also determines that the use of LED screens to play movies will no longer have the common problems of low refresh rate, misconvergence, and defocus in the traditional movie playback above. From the perspective of the audience's viewing habits and physiological habits, the actual brightness of the cinema projectors projected on the screen is quite low, and it is often necessary to close all doors and windows and can only be used in a dark environment. Since the projection beam is originally insufficient in brightness, the viewing conditions are deteriorated. This mainly affects the audiences who are closer to the projector at the back of the movie theater. These audiences will feel a beam of light on their heads and cause discomfort. Without a projection system, There is no so-called 'mans'. Anyone who has experienced theater knows that when watching a movie in a movie theater, the human eye has to go through the process of 'dark adaptation' when entering the movie theater and the process of 'bright adaptation' when leaving the theater. In both cases, there are human eye cone cells. Physiological studies believe that 'dark adaptation' is not obvious to the human eye, but it takes a long time; although the time is short, the 'bright adaptation' has a strong sense of discomfort to the human eye. The eye is often in a state of alternating between pyramidal cells and cylindrical cells, which can cause obvious fatigue of the eye and even cause other diseases. These two situations do not exist for indoor high-definition LED display movies. Moreover, the current small-pitch LED display generally solves the problem of multi-signal entry and processing in indoor use. It is very easy to switch at any time, and there will be no format problems in the projection. Furthermore, in terms of service life and supporting facilities for projection, the longest light source of the traditional projection system is only 20,000 hours. Each projection hall must have an independent projection room, which must occupy a large independent space. Compared with the general life of LED display screens up to 100,000 hours and does not require a special projection hall, there is a problem of excessive long-term investment costs.

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