To understand the black LED display, you must first understand the concept of white light. The LED is assembled by a plastic bracket and a light-emitting chip. The early light-emitting chip was not bright, so engineers made the plastic bracket into a white bowl to enhance the focus and reflection, to ensure that the chip with less brightness reached a brighter one. Effect. But the white light also has its shortcomings. When it wants to express black and gray, its natural light-emitting diode (white) also participates in the color that the electronic display wants to express, which produces color distortion (cannot express black, gray, dark green, etc.) ). Engineers compensated for the lack of brightness of the chip by losing color expressiveness.

The black light LED display is a display made of a black LED with a packaged plastic bracket. Compared with the general white light LED display, the black light LED display has the following advantages:

1. The contrast is higher, and the background color of the whole screen is more uniform. The contrast ratio of the black tube is 10000:1, and the contrast ratio of the white tube is 3000:1.

2. The black light has better stability, high contrast, low brightness and softer colors. The black tube is 1500cd/㎡, and the white tube is 2000cd/㎡.

3. The black lamp has low power consumption and the white lamp, which is more energy-saving and environmentally friendly. The power consumption of the black tube is 350w/㎡, and the power consumption of the white tube is 410w/㎡.

4. When the screen is not lit, the appearance color is consistent, and the display screen is more beautiful.

Through the above comparison, the white light LED display is weaker than the black light LED display in some functions, but in terms of cost, the black light display is more expensive, and the white light has a strong price advantage. Customers can choose to buy black or white light displays according to actual needs.

The current trend is that the brightness of the chip is getting higher and higher, and people have higher and higher requirements for the image display effect. In order to meet the needs of the high-end display market, Lianchengfa has developed and launched its own black light LED display products. And high-end LED displays using clarinets have become very common in the US, European and American markets, and Japanese markets. At present, the use of clarinets for high-end LED displays is a major trend.