LED integrated business screen (LED display) is a flat panel display, consisting of a small LED module panel, used to display a variety of information such as text, images, video, and other devices.
LED integrated business screen is an electronic display composed of LED dot matrix, through the light of red and green light beads to replace the screen display content form such as text, animation, pictures, video of timely transformation, through the modular structure of the component display control. Mainly divided into display module, control system, and power supply system. The display module is the LED light array that constitutes the screen luminous; the control system is to regulate the brightness of the region to achieve the conversion of the screen display content; the power supply system is to transform the input voltage and current to make it meet the needs of the display screen.
LED integrated business screen can realize the transformation between different forms of multiple information presentation modes, and can be used indoors and outdoors, with the incomparable advantages of other displays. With its high light intensity, low power consumption, low voltage requirements, compact and convenient equipment, long service life, impact resistance and stability, and strong resistance to external interference, it is rapidly developing and widely used in various commercial fields.
LED light-emitting color and luminous efficiency with the production of LED materials and processes, the light ball at first all blue, and then add phosphor, according to the different needs of users, adjust the different light colors, widely used red, green, blue, yellow four. Due to the low working voltage of LED (only 1.2 ~ 4.0V), can actively light and have a certain brightness, brightness and can be adjusted with voltage (or current), itself and shock resistance, vibration resistance, long life (100,000 hours), so in large display devices, there is no other display mode and LED display mode rivals.
LED, light-emitting diode (light-emitting diode abbreviation). It is a diode made by controlling the display of semiconductor light-emitting diodes, compounds of gallium (Ga) and arsenic (As), phosphorus (P), nitrogen (N), and indium (In), which can radiate visible light when the electrons are compounded with holes, and thus can be used to make light-emitting diodes. They are used as indicators in circuits and instruments, or to form text or digital displays. Gallium phosphide diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, and indium gallium nitride diodes emit blue light.
Putting red and green LED wafers or tubes together as a pixel to make the display is called a three-color or dual-base color screen and putting red, green, and blue LED wafers or tubes together as a pixel to make the display is called a three-color screen or full-color screen. If there is only one color is called monochrome or monochrome screen, the production of indoor LED screen pixel size is generally 1.5-12 mm, often used to produce several different base color LED core packages into one, outdoor LED screen pixel size is mostly 6-41.5 mm, each pixel consists of several various monochromes LED, common finished product called pixel cartridge, two-color pixel cartridge is generally composed of 2 red 1 The common finished product is called pixel cartridge, two-color pixel cartridge is generally composed of 2 red and 1 green, three-color pixel cartridge is composed of 1 red, 1 green and 1 blue.
Regardless of the use of LED production monochrome, bi-color, or tri-color screen, to display images need to constitute a pixel of each LED luminous brightness must be able to adjust the fine degree of adjustment in the gray level of the display. The higher the gray level, the more delicate the image displayed, the richer the color, and the more complex the corresponding display control system. In the General 256-level gray image, the color transition has been very soft, and in 16-level gray color image, the color transition boundary is very obvious. Therefore, color LED integrated business screens are currently required to make 256 to 4096 levels of gray.
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