Five major elements of choosing LED display shared by high quality Monitor factory China.
1. The failure rate
Since the full-color display screen is composed of tens of
thousands or even hundreds of thousands of pixels composed of red,
green and blue leds, the failure of any color LED will affect the
overall visual effect of the display screen. Generally speaking,
according to industry experience, the failure rate of LED display
should be no more than 3/10000 before the LED display starts to be
assembled and aging 72 hours before shipment (refers to the failure
caused by LED components themselves).
2. Anti-static capacity
LED is a semiconductor device, which is sensitive to static
electricity and easy to cause static electricity failure.
Therefore, the anti-static ability is very important for the life
of the display screen. Generally speaking, the failure voltage of
LED body electrostatic mode test should not be lower than 2000V.
3. Attenuation characteristic
Red, green and blue leds have the characteristics of brightness
attenuation with the increase of working time. The quality of LED
chip, the quality of auxiliary materials and the level of packaging
technology determine the attenuation rate of LED Fashionable Touch Monitor. Generally speaking, the attenuation of red LED should be less
than 10%, and that of blue and green LED should be less than 15%
after lighting test at room temperature of 20 ma for 1000 hours.
The consistency of attenuation of red, green and blue has a great
influence on the white balance of full-color LED display screen in
the future, which further affects the display fidelity of the
LED brightness is an important determinant of display brightness.
The higher the LED brightness, the larger the allowance of using
current, which is good for saving power consumption and keeping the
LED stable. Leds have different Angle values. When the chip
brightness is set, the smaller the Angle, the brighter the LED, but
the smaller the viewing Angle of the display. Generally, 100 degree
LED should be selected to ensure sufficient viewing Angle of the
display screen. For screens with different distances and different
line-of-sight, there should be a balance between brightness, Angle
5. The consistency
The full-color display screen is composed of numerous red, green
and blue LED pixels, and the brightness and wavelength consistency
of each color LED OEM computer Monitor determines the brightness consistency, white balance consistency
and chroma consistency of the entire display screen. Generally
speaking, display manufacturers require device suppliers to provide
5nm wavelength range and 1:1.3 brightness range of leds, which can
be graded by device suppliers through spectral separators. Voltage
consistency is generally not required.
Guangzhou Darui Electronic Technology Co., Ltd. is a China
manufacturer of Digital Signage, Touch Monitor, Computer Monitor, OLED TVS, Magic Mirror and OLED signage. We
have a high-tech work shop. We have a complete quality management
system. Choose us, you can be get most careful and thoughtful
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