Full color LED display screen: LED is the abbreviation for light emitting diode, abbreviated as LED.
LED, abbreviated as light emitting diode. It is a diode made of gallium (Ga) and arsenic (As), phosphorus (P), nitrogen (N), and indium (In) compounds by controlling the display mode of semiconductor light-emitting diodes. When electrons and holes recombine, visible light can be emitted, which can be used to make light-emitting diodes.
Used as an indicator light in circuits and instruments, or as a text or digital display. Gallium arsenide diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, indium gallium nitrogen diodes
Full color LED advertising cabinets is a type of LED display screen with rich colors. It is composed of three primary colors (red, green, and blue) display unit boards, with 256 grayscale levels of red, green, and blue each forming 16777216 colors, enabling the LED screen to display dynamic images with rich colors, high saturation, high resolution, and high display frequency.
The quality of full color LED display screens is mainly determined by the light beads, which directly determine the performance of LED full color display screens and the saturation and clarity of colors. Below, will provide you with a detailed introduction:
1、 LED bead failure efficiency
The full color LED display screen is composed of pixels consisting of tens or even hundreds of thousands of red, green, and blue LED beads. The failure of any color LED bead will affect the overall visual effect of the display screen.
2、 LED bead anti-static ability
LED beads are semiconductor devices that are sensitive to static electricity and are prone to electrostatic failure. Therefore, their anti-static ability is crucial for the lifespan of full color LED displays. Generally speaking, the failure voltage of LED lamp beads in human electrostatic mode testing should not be lower than 2000V.
3、 LED bead attenuation characteristics
Red, green, and blue LED beads all exhibit a characteristic of brightness decay with increasing working time. The quality of LED chips, the quality of auxiliary materials, and the level of packaging technology determine the attenuation speed of LED beads. Generally speaking, after a 1000 hour, 20 milliampere room temperature illumination test, the attenuation of red LED beads should be less than 10%, and the attenuation of blue and green LED beads should be less than 15%. The consistency of red, green, and blue attenuation has a significant impact on the white balance of full color LED displays in the future, which in turn affects the display fidelity of LED displays.
4、 LED bead brightness
The brightness of LED beads is an important determining factor for the overall brightness of LED display screens. The higher the brightness of LED beads, the greater the margin of current, which is beneficial for saving power and maintaining the stability of LED beads.
5、 LED bead consistency
The full color LED display screen is composed of countless pixels composed of red, green, and blue LED beads. The consistency of brightness and wavelength of each color LED bead determines the brightness consistency, white balance consistency, and chromaticity consistency of the entire LED display screen.
The above are the five main aspects that determine the quality of full color LED displays by LED beads. We hope to give you an understanding of full color LED displays.