Question

How to calculate the size of white LED display?

Answer 1

The size calculation of white LED display is mainly based on factors such as its resolution, dot pitch and unit board size. Here are some basic calculations:

1. Calculation based on resolution and pixel pitch: First, you need to know the resolution (i.e., the number of pixels) and pixel pitch (i.e., the distance between each pixel) of the LED display. You can then calculate the size of your display using the following formula:

Length (L) = number of horizontal pixels × dot pitch (P)

Height (H) = number of vertical pixels × dot pitch (P)

The point spacing (P) here is usually measured in millimeters (mm). Therefore, the calculation result will also be the display size in millimeters.

2. Calculation based on unit board size: Another calculation method is based on unit board size. LED displays are usually composed of multiple unit boards, each unit board has a fixed size and resolution. First, you need to know the dimensions (length and width) of each unit board and the number of unit boards. You can then calculate the size of the entire display using the following formula:

Total length (L_total) = unit board length (L_unit) × number of horizontal unit boards

Total height (H_total) = unit board height (H_unit) × number of vertical unit boards

This method is suitable when the size and number of unit boards are known.

3. Consider the frame size: When calculating the actual size of the LED display, you also need to consider the size of the frame. The frame is usually made of aluminum or stainless steel and has a certain width and thickness. Therefore, in the final calculation of the display size, the size of the bezel needs to be added to the size of the display.

It should be noted that the above calculation method only applies to white LED displays, and the calculation results may vary depending on the specific design and manufacturing method of the display. Therefore, in practical applications, it is best to refer to the specifications and parameters provided by the display manufacturer for calculations.

Answer 2

The calculation method of the size of the white LED display screen can be divided into the following steps:

1. Determine the point spacing:

    - Point spacing refers to the center distance between each pixel and adjacent pixels. For white LED displays, the choice of pixel pitch will affect the clarity and resolution of the screen. Common dot spacings include P10, P16, etc., where P represents the dot spacing, and the number represents the distance between two pixels. For example, P10 indicates that the dot spacing is 10 mm.

2. Calculation of unit board size:

    - LED displays are usually composed of multiple unit boards. The size of each unit board depends on the number of LED dots on it and the dot spacing. For example, for the P10 display, the unit board may be 32 points long and 16 points wide, so the size of the unit board is 320mm (length) x 160mm (width).

3. Overall size calculation:

    - When you need an LED display of a specific size, first calculate the number of unit boards required. This can be achieved by dividing the total length and width of the expected screen by the length and width of the cell board respectively, rounding the result to an integer since incomplete cell boards cannot be used.

    - Then, multiply the size of a single unit board by the number of unit boards required to get the actual screen length and width.

4. Consider the frame and installation space:

    - When calculating the total dimensions, also consider the width of the bezel and the additional space required for installation. These factors may increase the overall size of the display.

For example, if you need a white LED display that is 4 meters long and 3 meters wide and uses a P10 unit board, then you need to first calculate the number of unit boards required. 

Assuming that the size of the unit board is 320mmx160mm, the length needs to be 4000mm/320mm≈12.5 pieces, which is an integer of 13 pieces; the width needs to be 3000mm/160mm≈18.75 pieces, which is an integer of 19 pieces. So, the actual screen size is 13 pieces x 320mm = 4160mm (length) and 19 pieces x 160mm = 3040mm (width).

Please note that the above calculation method is a general method and the specific calculation may vary depending on the product. 

In practical applications, it is recommended to consult the LED display manufacturer or supplier to obtain the most accurate size calculation method. 

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