What is a high quality LED display?The following list some ways  to identify a display.

1.Smoothness

LED display surface flatness to within 0≤a≤1mm, in order to ensure the display image is not distorted, partial raised or recessed will lead to the display viewing angle appears dead. The quality of flatness determined mainly by three aspects: ① the production processes and materials; ③ Display installation and constructionquality installation teamdecided; ② site steel construction.

2.Brightness and viewing angle

Indoor full color LED display brightness to the 800cd / m2 or more, and brightness outdoor full color LED display to1500 cd / m2 or more, in order to ensure the normal display LED display, otherwise it will be too low and not seebecause of the brightness image display. The level of brightness is mainly composed of the LED die is good or baddecision.

LED size of the viewing angle directly determines how much viewing area of the display space, and therefore the bigger the better. The size of the viewing angle is determined mainly by the LED chip.

3.White balance

White balance is one of the most important indicators of the LED display. Red, green and blue color science taken in the ratio of 1: 4.6: 0.16 pure white will beshown, if the actual proportion of any deviation occurs the white balance bias, usually pay attention to whether there are bluish white, yellow green phenomenon.White balance is good or bad is determined by the LED chip, LED chips for the reduction of color also have an impact.

4.Color reduction

Color reduction refers LED display for color reduction, color LED display that is to be highly consistent with the source of the color, so as to ensure realistic images.

5.If there are mosaic and ead phenomenon

Mosaic refers to appears on the LED display lit or normally black small four-square, both modules necrosis, mainly due to: the quality of ①LED connectors used for the display, but off a raised or sunken phenomenon; ②LED light is notset right; ③ sealed plastic process failed. Dead point is normally black single point appears on the LED display, LED chipsmainly by how much good or bad to decide dead point.

6.If there is no color

        If there a small area of the missing color; the main reason is the control IC and power supply, the control circuitcable quality

7.Screen appearance

Is the most intuitive, the most primitive of product quality is good or bad to do the most preliminary assessment.Appearance quality can reflect the quality ofmanufacturer's production processes and materials.