Publisher: Supplier of LED Display Time: 2022-04-21 13:35 Views: 249
In recent years, the application of colorful indoor LED displays in stadiums, road traffic, advertising, leasing, etc. has shown a rapid growth trend. From the current market demand analysis, the necessity of on-site proofreading is becoming more and more prominent. Uniformity proofreading is summarized as: factory proofreading, repair proofreading, service area proofreading and on-site proofreading.
Generally speaking, when the LED display runs to a certain time, all the LED light-emitting tubes will have brightness attenuation, and the attenuation curves of the three primary color tubes are not the same. As a result, their brightness will also be reduced from the factory brightness. However, the difference in the photoelectric characteristics of each LED light-emitting tube causes errors in the degree of decline in their brightness.
In fact, due to the attenuation of the LED light-emitting tube and the change of other factors such as ambient temperature, it is almost inevitable that the function of the very excellent display screen will deteriorate when it leaves the factory. It is impossible to complete the project by disassembling and transporting the installed LED display back to the factory for proofreading. In view of these characteristics, it is necessary for display manufacturers to carry out field-based calibration to ensure that the display function of the factory is always maintained throughout the life cycle of the display. Several on-site proofreading methods:
In order to completely improve the uniformity of the display screen, it is necessary to use special collection equipment to quickly collect the light color information of each pixel of the LED display screen on the spot, and use the relevant algorithm to calculate the actual attenuation degree of each LED light-emitting tube. Compensation, and then completes the real sense of common proofreading, even for LED modules that are not running at the same time, the pixel-level calibration can be completed. Through proofreading, the display screen can be restored to the uniform display function just before leaving the factory.