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What Should we know when buy a led screen

When buying LED displays, many customers don’t know how to buy cost-effective products.There are also many users who collect information on this topic online, but they never get a satisfactory answer.So what are the factors that should be considered when purchasing a display?

The first point:What is the ratio of the length to the width of the general display?
1.Graphic screen: determined according to the displayed content;
2.Video screen: Usually 4:3 or close to 4:3; the ideal ratio is 16:9.

Second point:What are the general considerations for the size design of LED displays?
1.Displayed content
2.Space conditions
3.LED display module size (indoor screen)Or pixel size (outdoor screen)

The third point: need to understand the display power consumption indicators and power requirements?
The power consumption of the LED display is divided into average power consumption and maximum power consumption.The average power consumption, also known as the working power, is the actual actual power consumption.The maximum power consumption is the power consumption during extreme conditions such as startup or full brightness.The maximum power consumption is an element that must be considered for AC power supply (wire diameter, switch, etc.).The average power consumption is generally 1/3 of the maximum power consumption.The display screen is a large-scale precision electronic device. For safe use and reliable operation, the AC220V power input terminal or the AC220V power input terminal of the computer connected to it must be connected to the ground wire.

Fourth point: What are the factors that need to consider the screen area allowed by the venue?
1.The relationship between the effective viewing distance and the actual site size;
2.Pixel size and resolution;
3.Unit area estimation
4.Screen mechanical installation and maintenance operation space
5.The effect of the viewing angle of the screen on the distance

Fifth point: Why is the production cycle of outdoor screens longer?
1.Raw material procurement: LED lamp purchase cycle is long, especially Import led, ordering cycle takes 4-6 weeks;
2.The production process is complicated: it needs to pass PCB design, shell production, glue filling, white balance, etc.
3.Strict structural requirements: generally box design, need to consider wind, rain, lightning protection.

Sixth point: What are the requirements for the screen brightness from Ambient brightness?
The general brightness requirements are as follows:
1.Indoor: >800CD/M2
2. Semi-indoor: >2000CD/M2
3.Outdoor (no sun exposure): >4000CD/M2
4.Outdoor (directly facing the sun): >8000CD/M2

Seventh point: need to understand the design and installation of outdoor LED display?

1.The connection between the screen and the building must be strictly waterproof and leakproof;The screen body should have good drainage measures, and once the water accumulation occurs, it can be discharged smoothly;
2.Install the ventilation equipment to cool down, so that the internal temperature of the screen is between -10 °C and 40 °C. An axial fan is installed on the back of the screen body to discharge heat;
3.Install lightning protection devices on the display and buildings. The display body and housing are well grounded.The grounding resistance is less than 3 ohms, so that the large current caused by lightning is discharged in time;
4.In order to ensure that the LED display can be viewed from a distance when the ambient light is strong, an ultra-high brightness LED display must be used;
4.Choose a high quality LED display,Prevent the winter temperature from being too low to prevent the display from starting.