1, Luminescence principle and structural characteristics
Side lit LED panel:
The principle of side lit LED panels is to place LED light strips at the edges of the panel and use a Light Guide Plate (LGP) to evenly distribute the light emitted by the LEDs throughout the entire panel. This design makes the side lit LED panel thinner and lighter in structure, as there is no need to install a large number of LED light sources on the back of the panel. Light guide plates are usually made of materials with high light transmittance, and are filled with fine dot structures inside. These dots can guide light to undergo total reflection inside the light guide plate, and ultimately emit uniformly from the surface of the panel.
Backlit LED panel:
Backlit LED panels directly arrange a large number of LED light sources on the back of the panel, and the light emitted by these LED light sources directly shines on the panel, forming a picture. Backlit LED panels can be further divided into direct lit and local dimming types based on the distribution of LED light sources. The LED light sources of the direct backlight LED panel are evenly distributed on the back of the panel, while the local dimming backlight LED panel controls the brightness of the LED light sources through zoning to achieve higher contrast and finer image control.
2, Display effect and color expression
Side lit LED panel:
Side lit LED panels, due to the use of light guide plate technology, undergo multiple reflections and scattering of light inside the light guide plate. Although they can achieve a relatively uniform brightness distribution, their color performance may be slightly insufficient. Especially at the edges of the image, due to the long transmission path of light inside the light guide plate, slight color deviation or brightness attenuation may occur. In addition, the brightness uniformity of side lit LED panels may also be affected by the design, manufacturing accuracy, and usage environment of the light guide plate.
Backlit LED panel:
Backlit LED panels have significant advantages in color performance and brightness uniformity. Direct backlit LED panels can directly provide high brightness and high color saturation images, as the LED light source directly illuminates the panel, reducing the loss of light during transmission. The local dimming backlight LED panel controls the brightness of the LED light source through zoning, further improving the contrast and color hierarchy of the picture, making the picture more delicate and vivid.
3, Energy efficiency and heat dissipation performance
Side lit LED panel:
Side lit LED panels are usually superior to backlit LED panels in terms of energy efficiency because they have fewer LED light sources and the light emitted by the LED light sources undergoes multiple reflections and scattering inside the light guide plate, which can more effectively utilize light energy. In addition, the side lit LED panel has a more compact structure and relatively good heat dissipation performance, which helps to extend the service life of the LED light source.
Backlit LED panel:
Backlit LED panels, especially direct backlit LED panels, may generate high energy consumption and heat due to the large number of LED light sources and the direct illumination of LED light sources onto the panel. However, with the advancement of technology, modern backlit LED panels have adopted various energy-saving and heat dissipation measures, such as intelligent brightness adjustment and efficient heat dissipation design, to reduce energy consumption and improve heat dissipation performance.
4, Application scenarios and selection suggestions
Side lit LED panel:
Side lit LED panels are widely used in lightweight display devices such as LCD TVs, tablets, laptops, etc. due to their lightweight, energy-saving, easy to manufacture, and low cost characteristics. These devices usually do not have particularly high requirements for display performance, but have high demands for thinness, portability, and energy-saving performance.
Backlit LED panel:
Backlit LED panels are widely used in high-end LCD TVs, professional displays, projectors, and other devices that require high-quality display effects due to their excellent color performance, brightness uniformity, and high contrast. These devices usually have high requirements for display effects to provide more delicate and vivid images.
