Color: The red and green LEDs are put together as a pixel. The display screen is called a two-color screen or a color screen. The red, green and blue LED tubes are put together as a pixel display screen called a three-color screen or a full-color screen. . Pixels: The pixel size of the indoor LED screen is generally 2-10 mm, and it is often used to package several LED dies that can produce different primary colors. The outdoor LED screen has a pixel size of 12-26 mm, and each pixel is composed of a plurality of various monochromatic LEDs. The common finished product is called a pixel tube. The two-color pixel tube is generally composed of 3 red 2 green, and the three-color pixel tube is composed of 2 red 1 green 1 blue. Regardless of whether a single-color, two-color or three-color screen is made with LEDs, the brightness of each LED that needs to constitute a pixel must be adjustable. The fineness of the adjustment is the gray level of the display. The higher the gray level, the finer the displayed image and the richer the color, and the more complex the corresponding display control system. Generally, the image of 256-level gray scale has a very soft color transition, while the color image of 16-level gray scale has a clear color transition boundary. Therefore, color LED screens are currently required to be 256-level grayscale. Display speed: refers to the speed at which the LED display updates and converts the picture, usually expressed in frames per second. Interface: VGA input interface: VGA interface adopts asymmetrically distributed 15pin connection mode. Its working principle is to image the image (frame) signal stored in digital format in analog memory into analog high frequency signal in RAMDAC, and then output. To plasma imaging, the VGA signal is at the input (in the LED display) and does not have to be converted by the matrix decoding circuit like other video signals. From the previous video imaging principle, the video transmission process of VGA is the shortest, so the VGA interface has many advantages, such as no crosstalk and no circuit synthesis separation loss. DVI input interface: The DVI interface is mainly used to connect with a computer graphics card with digital display output function to display the RGB signal of the computer. The DVI (Digital Visual Interface) digital display interface is a digital display interface standard developed by the Digital Display Working Group (DDWG), which was established at the Intel Developer Forum in September 1998. The DVI digital terminal is better than the standard VGA terminal signal. The digital interface ensures that all content is transmitted in digital format, ensuring the integrity of the data during the transmission from the host to the monitor (no interference signal is introduced), and a clearer image can be obtained. Standard video input (RCA) interface: also known as AV interface, usually a pair of white audio interface and yellow video interface, it is usually connected by RCA (commonly known as lotus head), only need to take the lotus head with The standard AV cable can be connected to the corresponding interface. The AV interface enables separate transmission of audio and video, which avoids image quality degradation due to audio/video mixing interference, but the AV interface still transmits a video with a mixed luminance/chroma (Y/C). The signal still needs the display device to perform bright/color separation and chrominance decoding to image. This process of mixing and then separating will inevitably cause loss of color signal, and the chrominance signal and the luminance signal will have a great chance to each other. Interference thus affects the quality of the final output image. AV also has a certain vitality, but due to its insurmountable shortcomings of Y/C mixing, it cannot be used in some situations where visual limits are pursued. Digital Display Controller,Controller For Solar Energy,Off Grid Pwm Solar Charging Controller,Solar Controller Home Solar Power GuangZhou HanFong New Energy Technology Co. , Ltd. , https://www.hfsolarenergy.com