Now on the market, any kind of LED electronic display price has. The key problem is whether we can buy good quality display screen products. At present, there are many manufacturers of LED electronic display screen. Each company’s raw material purchase, equipment and process are not the same. Therefore, in order to pursue low price, each LED electronic display screen manufacturer has different positioning for display quality. Let’s talk about the difference between low price and high price.
The main differences between cheap and expensive LED electronic display are as follows:
Led belongs to low voltage drive, so it is sensitive to high voltage and antistatic ability. The natural price of anti static LED is relatively high.
LED electronic display screen is a kind of material which can convert electric energy into light energy directly. Luminous efficiency determines the value of LED itself.
In addition, the larger the LED chip size, the higher the brightness, the more expensive the price.
LED will produce a band after emitting light. The nearest distance to the farthest distance of the band will be divided into different wavelengths. The display screen has strict requirements on the wavelength of LED lamp. The display screen with the same wavelength will display the better effect. If the wavelength is inconsistent or the deviation is too large, the LED display screen will have different color difference when viewed from the side.
4. Leakage current
LED electronic display screen belongs to unidirectional conductive light-emitting conductor. When designing the circuit board, the reverse current requirement of the circuit board is very strict. If there is reverse current, the life of LED will be shortened.
5. LED luminous angle
LED luminous angle will directly affect the brightness and consistency of the display screen. The concept of consistency is to view the display screen from any angle, and the color displayed is the same. If the angle is not consistent, there will be color difference.
6. LED life
LED life is determined by LED chip, LED bracket, led gold wire and LED package structure.
The key factor of LED life is the attenuation degree of LED in working state. The faster the decay, the shorter the lifetime.
7. LED chip
In the market, there are many brands of LED chips, including Cree in the United States, Japan Asia in Japan, and Taiwan. Now there are chip manufacturers in the mainland. Different chips have different stability, brightness and lifetime.
8. Chip size
The chip has different sizes, and the chip size is defined by the side length. The larger the size, the better the performance, the higher the natural price.
9. Epoxy resin colloid
LED is the finished product after packaging, and the conventional plug-in LED chip will become the finished product after cooling by solid crystal, bonding wire, dispensing and epoxy resin packaging. Epoxy resin is a transparent solid, and colloids with anti ultraviolet and fire resistance characteristics are expensive.