There are many basic technical parameters of LED display, understanding the meaning of which can help you better understand the product. Today, Rongzhen Xiaobian will take you to see what the basic parameters of LED display have meaning.
Pixel: The smallest unit of light emitted in an LED display, the same meaning as a pixel in a normal computer monitor.
What is point spacing (pixel spacing)? The center distance between two adjacent pixels, the smaller the spacing, the shorter the visual distance. Insiders often simply refer to P for point spacing.
1. The distance from the center of one pixel to the center of another pixel
2. The smaller the dot spacing is, the smaller the shortest viewing distance is, and the closer the viewer is to the display screen.
4. Light tube size < point spacing P = L / 1700 where: P is the point spacing, unit mm L is the nearest viewing distance, unit mm, that is, P1.6 LED display is suitable for viewing from 2.7m away
Pixel density: also known as lattice density, usually refers to the number of pixels per square meter of screen.
What are cell board specifications? Refers to the dimension of the cell board, usually expressed as the length of THE CELL board multiplied by the WIDTH, IN millimeters. (48 x 244) specifications are P1.0, P2.0, P3.0......
What is the resolution of the cell board? The NUMBER OF PIXELS IN A CELL BOARD, USUALLY EXPRESSED AS THE NUMBER OF ROWS multiplied BY THE NUMBER OF COLUMNS. (such as: 64 * 32)
What is white balance and what is white balance regulation? By white balance, we mean the balance of white, that is, the balance of the brightness ratio of RGB three colors; RGB three color brightness ratio and white coordinate adjustment, known as white balance adjustment.
What is contrast? The ratio of the maximum brightness of the LED display to the background brightness under a certain ambient illumination. At a certain ambient illumination, the ratio of the maximum brightness of the LED to the background brightness. High contrast represents a relatively high brightness and the showiness of the color presented can be measured by professional instruments and calculated
What is the color temperature? The color emitted by the light source is the same as that radiated by the blackbody at a certain temperature, and the temperature of the blackbody is called the color temperature of the light source. LED display color temperature adjustable: generally 3000K ~ 9500K, factory standard 6500K can be measured by professional instruments
What is chromatic aberration? LED display is composed of red, green and blue to produce a variety of colors, but these three colors are made of different materials, the Angle of view is different, the spectral distribution of different LED is changing, these can be observed differences called chromatic difference. When the LED is viewed at an Angle, its color changes, and the human eye is better at judging the color of a real picture (like a movie picture) than it is at looking at a computer-generated picture.
What is perspective? The viewing Angle is when the brightness of the viewing direction drops to 1/2 of the brightness of the LED display normal. The Angle between two viewing directions and the normal direction of the same plane. Divided into horizontal and vertical Angle of view, Angle of view is also called half power Angle.
What is perspectibility? The Angle of view is the Angle between the direction of the image content on the display screen and the normal line of the display screen. Visual Angle: When the LED display screen has no obvious color difference, the screen Angle can be measured by professional instruments. Visual Angle can only be judged by the naked eye. What is a good visual Angle? Good viewing Angle is the Angle between the normal line and the clear direction of the image content, which is just right to see the content on the display without changing color.
After understanding these basic parameters, compare their own needs and budget, you can choose a favorite LED display!