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There are three important factors in designing the size of the LED display screen:
(1) The need to display content
(2) Space conditions of the venue
(3) LED display unit template size (indoor screen) or pixel size (outdoor screen)
The resolution of a common LED display is generally up to 480 rows x 768 columns. Special LED display can exceed this limit, the common method is to use two screens to combine; the other is to design the circuit with ultra-high speed chip, but the cost is higher.
The following are the design reference sizes for indoor LED displays:
The dot pitch of φ3.0mm is 4.00 mm, and the maximum size of the screen is about 2.0 m (height) × 3 m φ 3.75 mm. The dot pitch is 4.75 mm. The maximum size of the screen is about 2.5 m (height) × 4 m. The dot pitch of φ5.0mm is 7.62 mm, and the maximum size of the screen is about: 3.7 m (height) × 6 m.
When designing the geometry of an indoor LED display, it should be based on the size of the LED display unit template. A unit template resolution is generally 32 rows × 64 columns, that is, a total of 2048 pixels, the geometric dimensions are as follows:
Φ3.75mm unit template size: 152 mm (height) × 304 mm (width)
The φ5 mm unit template size is: 244 mm (height) × 487 mm (width)
The size of the outer frame of the indoor LED display can be determined according to requirements, and should generally be proportional to the size of the screen. The outer frame is usually 5 cm - 10 cm (per side).
For outdoor LED displays, the pixel size is first determined. The selection of the pixel size should take into account the needs of the aforementioned display content and the space factor of the space, and the installation position and line of sight should also be considered. If the installation location is farther from the subject's line of sight, the pixel size should be larger, because the larger the pixel size, the more the LEDs in the pixel, the higher the brightness, and the farther the effective line of sight. However, the larger the pixel size, the lower the pixel resolution per unit area and the less content is displayed.
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