What Are LED Screens?

LED large screen (LED panel): LED is light emitting diode, the English abbreviation of light emitting diode, referred to as LED. It is a display mode by controlling semiconductor light emitting diodes. Its approximate appearance is composed of many small lights, usually red, green, and blue. Characters are displayed by turning the lights on and off. A large display screen for displaying various information such as text, graphics, images, animations, quotes, videos, and video signals.

led large screen

LED large screen is the development trend of the advertising industry in the 21st century. It is an indoor and outdoor advertising display device with audio and video functions. It is an internationally leading high-tech product. The device has a novel and unique appearance, and its area can be adjusted freely. Not only can it play audio and video advertising programs, but it can also be equipped with fixed light box advertising spaces on all sides. Local governments now encourage the use of outdoor

1. It has the characteristics of liquidity, compulsoryness, pertinence and effectiveness.

2. Program advantages. Self-made programs, instant playback, rich in content. Not only ads, but also shows. Including specials, columns, variety shows, animation, radio dramas, TV dramas, and interstitial advertisements.

3. Location advantage. It is mainly installed in the crowded areas such as shopping malls. Among them, the LED full-color large screen is installed in the landmark area, and its propagation effect is more shocking and mandatory.

1. Play the role of product promotion and attract customers.

2, play the role of store decoration, improve the quality of enterprises.

3, play a role in lighting, unconventional.

4. Play a role in popularizing knowledge. (Can be used to play small information about enterprise products, knowledge of related industries)

5. Act as a bulletin board. (Promotions, job postings)

6, play a role in setting the atmosphere. The display screen can display the welcome speeches of the leaders and various VIPs to visit and guide, and the celebration speeches of various major festivals.

1.According to the color, the basic color can be divided into

Large single-color screen: single color (red or green).

1.LED brightness

The brightness of light-emitting diodes is generally expressed in luminous intensity (Luminous Intensity), the unit is candela cd; 1000ucd (micro candela) = 1 mcd (milli candela), 1000mcd = 1 cd. The light intensity of a single LED for indoor use is generally 500ucd-50 mcd, while the light intensity of a single LED for outdoor use should generally be 100 mcd-1000 mcd, or even more than 1000 mcd.

2.LED pixel module

The LEDs are arranged in a matrix or pen segment and are pre-made into standard size modules. 8 * 8 pixel modules and 8-character 7-segment digital modules are commonly used in indoor displays. Outdoor display pixel module has 4 * 4, 8 * 8, 8 * 16 pixels and other specifications. The pixel module for outdoor display screens is also called a tube bundle module because each pixel is composed of more than two LED tube bundles.

3.Pixel and Pixel Diameter

Each LED light-emitting unit (dot) in an LED display screen that can be controlled individually is called a pixel (or pixel). The pixel diameter refers to the diameter of each pixel in millimeters.

For indoor displays, generally one is a single LED with a circular shape. For indoor display pixel diameter calibration, there are 3.0, 3.75, 5.0, and 8.0, among which 3.75 and 5.0 are the most.

In the outdoor environment, in order to increase the brightness and increase the viewing distance, a pixel contains more than two clustered LEDs; because more than two clustered LEDs are generally not circular, the pixel diameter of outdoor displays is generally expressed by the average distance between two or two pixels : P10, P11.5, P16, P22, P25.

4. Dot Pitch, Pixel Density and Information Capacity

The center-to-center or dot pitch of two or two pixels of the LED display; the number of pixels in a unit area is called the pixel density; the number of display contents contained in a unit area is called the information capacity. These three are essentially describing the same concept: the dot pitch reflects the pixel density from the distance between two pixels, the dot pitch and pixel density are the physical properties of the display screen; the information capacity is the information carrying capacity of the pixel density Unit of quantity.

The smaller the dot pitch, the higher the pixel density, the more information capacity, and the closer the viewing distance is.

The larger the dot pitch, the lower the pixel density, the smaller the information capacity, and the longer the distance suitable for viewing.

5.Resolution

The number of pixels in the LED display is called the resolution of the LED display. Resolution is the total number of pixels in the display, and it determines the information capacity of a display.

6.LED Panel

The LED pixel modules are assembled and arranged into a matrix according to the actual size, and are equipped with a dedicated display driving circuit, a DC stabilized power supply, software, a frame, and exterior decoration, etc., to form an LED display screen.

7.Grayscale

The gray level refers to the degree of change in the brightness and darkness of a pixel. The gray level of a primary color generally ranges from 8 to 1024. For example, if the gray level of each primary color is 256 levels, the display color of a dual-primary color screen is 256 × 256 = 64K colors, which is also referred to as a 256-color display screen.

8.Double color

Most color LED displays today are dual-primary color screens, that is, each pixel has two LED dies: one is a red light die, and the other is a green light die. The pixel is red when the red light die is on, the pixel is green when the red light die is on, and the pixel is yellow when both red and green die are on. Among them, red and green are called primary colors.

9, full color

Red and green primary colors plus blue primary colors,