First, from the function point of view: The purpose of advertising is publicity, to absorb the eye, to establish a deep impression to the audience, the screen is exquisite, after all kinds of creativity, change and other means the same can receive good results. The outdoor full color led display more than neon lights, enough for advertising purposes.
Second, from the brightness: the conditions of direct sunlight outdoors, the demand of 5000CD brightness, 1000cd indoors is enough, there are semi-outdoor in the middle, these are the industry's consensus.
Third, from the reliability and life point of view: led display life depends mainly on the life of LED. LED life is the light-emitting tube light intensity dropped to half the nominal time. Short life LED, like the military electronics in the same device, the price is much higher. Luminous intensity decay and pipe quality, working current and work environment is very big, even if the brand life-long tube, if the working state is not appropriate, life expectancy will be shortened, these are related to cost.
Fourth, the resolution of the composition: Resolution or resolution depends on the pixel density, led screen in the cost, the cost of pixels accounted for more than half. Therefore, the reduction of pixel capital is the most attractive, pixel unity technology or dynamic pixel technology is the commonly used method.