Analysis of the difference between LED display and LED backlight

LED screens are very popular with LED backlights. LED display screens are also called electronic display screens or floating screens. It is composed of LED dot matrix and LEDPC panel, and displays text, pictures, animation, video, and content through the red, blue, white, and green LED lights. Different adjustments can be made according to the needs of different occasions. For example, the general calligraphy and painting of flowing billboards is to create an animation through flash, store it in a memory card on the display screen, and then display it through technical methods. Different needs to be replaced at any time, each part of the components are modular display devices. The traditional LED display screen is usually composed of a display module, a control system and a power supply system.

The luminous color and luminous efficiency of the LED are related to the materials and processes used to make the LED. At first, the lamp ball is all blue light, but the back is added with phosphor. According to the different needs of users, different light colors are adjusted. Widely used There are four kinds of red, green, blue and yellow. Due to the low operating voltage of the LED, it can actively emit light and have a certain brightness, and the brightness can be adjusted by voltage. It is also resistant to shock, vibration and long life (100,000 hours), so there is no other display in the large display The mode is comparable to the LED display.

Put the red and green LED chips or tubes together as a pixel. The display screen is called a single-color or single-primary color screen and a three-color or double-primary color screen. Put three red, green and blue LED chips or tubes The display screen that is used as a pixel together is called a three-color screen or a full-color screen. If there is only one color, it is called monochrome. The pixel size of indoor LED screens is generally 2-16 mm. It is often used to package several LED dies that can produce different primary colors. The pixel size of outdoor LED screens is mostly 6 -31.5 mm, each pixel is composed of several various monochromatic LEDs, the common finished product is called a pixel tube, a two-color pixel tube is generally composed of 2 red and 1 green, and a three-color pixel tube is composed of 1 red, 1 green and 1 blue .

LED screen is more suitable for people's work and life

Regardless of whether a single-color, two-color, or three-color screen is made with LEDs, the brightness of each LED that constitutes a pixel must be adjustable to display the image. The fineness of adjustment is the gray scale of the display screen. The higher the gray level, the more delicate the displayed image, the richer the color, and the more complicated the corresponding display control system. Generally, the 256-level gray-scale image has a very soft color transition, while the 16-level gray-scale color image has a very obvious color transition boundary. Therefore, color LED screens are currently required to be 256 to 4096 grayscale.

The reason why LED is widely regarded and developed rapidly is inseparable from its own advantages. The development prospect of LED is extremely broad, and it is developing towards higher brightness, higher weather resistance, higher luminous density, higher luminous uniformity, reliability and full color.

LED display has the characteristics of environmental protection, high brightness, high definition, and high reliability. The LED display market only met people's needs in the previous stage, but it did not meet the requirements of LED display products. The quality is not enough. With the development of LED display screens, LED products have now made a new breakthrough. At least more progress than the previous stage. It has also developed a series of products that are completely different from traditional light source applications. LED display screen will appear a larger and wider development space. LED display screen is not only a beautification effect, its change makes it more relevant to people's work and life.