# How to calculate LED screen size?

How to measure LED screen size?
How to calculate LED screen size?

LED indoor display screen, use Ф3.75 (the specification of the unit board is: *, the specification is 64*32 points) as an example.

If you want to make a LED display with a (length) 4m*(height) 3m, the calculation method is as follows: 4m/0.=13.16 At this time, take an integer (can be rounded up), take 13, and then use 13*0.=3. That is: the length that meets the above requirements should be 3. The frame is made of aluminum or stainless steel, and the aluminum is silver-white or black. The thickness of the frame is about 8mm and the width is about 3.5mm. The final LED display screen that meets the above requirements The size is: 3.+0.07 (the sum of the widths of the borders on both sides) = 4..

The same reason; the calculation method of the height of the LED display screen is: 3m*0. (height of the unit board) = 19.74 rounded up as an integer 20 (rounded up), 20 is the number of the unit board, and the net screen size is: 20*0.= 3. The size with the frame is: 3.+0.=3.. Note: Chinese characters are in 16*16 dot matrix. Generally, the specification of the indoor unit board is 64*32 dot matrix, that is, the height of the indoor unit board can generally be cut in half. When calculating the height of the indoor LED display just now, you can take 19.5, and the result is: 19.5 (block)*0.=2. The size with the frame is: 2.+0. (width of aluminum)=3. Outdoor LED The calculation method of the display screen: (outdoor full color, the size of the box is: *) If you specify the width and height of the LED display you want to use, you can calculate it in the same way as above: if the customer requires an outdoor full color screen of 30 square meters . There is no requirement for the width and height for the time being. It can be calculated as follows: Usually calculated according to the ratio of 4:3 and 16:9: If the width and height are designed in the ratio of 4:3: Calculation method of width: The result of 30/12 is open. root, then multiply by 4, then divide by rounding up. Then multiply the width of the box by the integer to get the width required by the screen. That is: =1.*4=6./1.=6.17 rounded to 6, that is, the length of the display screen is: 6*1.=6.. The same reason: the calculation method of the height of the LED display is: =1.*3=4./0.=6.17, which is an integer of 6.

The screen size is in imperial inches, the diagonal measurement. 1 inch is equal to 2.54 centimeters in metric. 32 inches is 81.28 cm, 37 inches is 93.98 cm, 46 inches is .84 cm, 52 inches is .08 cm, and 55 inches is .7 cm. And so on, this is a unit of length, not an area. As for whether this length counts as the area of ​​the frame, it is not clear, and the degree of kindness of each manufacturer is different. Because although the screen is rectangular, it is not necessarily a ratio, such as: it may be 4:3, it may be 16:10 or other ratios. In this way, it is obviously unreasonable to use the length and width as the basis. Similarly, if the area is used, the product of the length and width needs to be calculated, which is more troublesome. In addition, as long as two rectangles with the same diagonal length, no matter they are What are the proportions, the area must be the same. So the easiest way is to measure the diagonal of the screen to see the size, because this is the most intuitive and easiest way to measure the panel in the panel factory (one person can know the size by measuring the diagonal line with a ruler, and the length and width also need to be measured twice), so the market is also used in this way. In fact, using inches as the unit is not in line with the current laws of our country. my country is a metric country, and commodities obviously cannot be in imperial units (for example, if someone sells meat in our country in pounds, it will definitely not work), so you It can be seen that the size of the TV or computer monitor or other size marked in the shopping mall is in cm (for example, the 32-inch TV we are talking about is actually the TV in the store), or both, but it must not be only British one.

How to measure: Measure the length of the diagonal of the screen in centimeters and divide by 2.54 to get the size of the TV. How to choose: If the TV is placed in the living room, the distance between the sofa and the TV cabinet is about 2.5 meters, but if you lean on the sofa, there should be a distance of 3 meters. In this case, what size should the TV be? If the place is large enough, the range we can choose will naturally be relatively loose. At this time, we can roughly estimate which size class model is relatively suitable according to the viewing distance. In the case of long-term viewing, it will not be affected by the screen. Too small and the picture is not clear, the font is not obvious, and it will not cause too much pressure because the screen is too large, and the eyesight is too tight and the eyes are overused. If the viewing distance is 1.7 meters, the screen size should be 26 inches. The viewing distance is 2 meters and the screen size should be 32 inches. The viewing distance is 2.5 meters and the screen size should be 37 inches. The viewing distance is 2.8 meters and the screen size should be 40 inches. The viewing distance is 3 meters and the screen size should be 42 inches.