There are several specifications for LED display screens: model specification, module size specification, and cabinet size specification. Here we mainly talk about the model specifications used for indoor LED display screens. The module and cabinet are chosen according to the display size ratio when designing the display screen.

Indoor LED display screens mainly use P1.9, P1.8, P1.6, P1.5, P1.2, P0.9, etc. In the industry, LED display screens with a pitch below P2 are called small pitch LED display screens.

Why are small pitch LED display screens used for indoor displays? Because when viewing at a close distance indoors, the image on the display screen needs to be clear, and the brightness cannot be too high. Traditional models with a pitch of P3 or above have high brightness. If they are used indoors for a long time, they can easily cause visual fatigue, so they are not suitable. In addition, LED display screens are made up of individual LED chips, and the larger the pitch, the more obvious the pixelation. P3 displays can already exhibit obvious pixelation at close distances, and the closer you get, the more obvious it becomes.

The reason why LED display screens are divided into outdoor and indoor categories is that, firstly, when the pitch is below P2, the brightness cannot meet outdoor standards. Secondly, large-sized LED display screens have obvious pixelation when viewed at close distances, making them unsuitable for indoor use. Thirdly, the environment is different, and the required configurations will also be different. Outdoor displays require good protection, such as shock resistance, waterproofing, moisture-proofing, electrical protection, and heat dissipation.

For indoor LED display screens, the above-mentioned models can be selected based on the viewing distance.