Difference between DIP and SMD packaging of outdoor LED display screen

Generally speaking, in-line LED display screen is mainly used for outdoor display screen, and patch LED is used for outdoor and indoor LED large screen. In addition, let's talk about their differences in detail.

Plug-in LED display

In-line LED is encapsulated by potting. The process of potting is to inject liquid epoxy resin into the LED molding cavity, then insert the pressure welded LED bracket, put it in the oven to cure the epoxy resin, and then detach the LED from the molding cavity. Low beam lamp has a high market share because of its relatively simple manufacturing process and low cost. In-line LED is bulky and can be operated by manual plug-in or AI machine. Because of its high brightness and easy waterproof treatment, in-line LED is generally used as the light source of outdoor LED display screen.

Patch LED display screen

But the SMD LED is attached to the surface of the circuit board, which is suitable for SMD processing and reflow soldering. Brightness, viewing angle, flatness, reliability, consistency and other issues have been well solved. Lighter PCB board and reflective layer materials are adopted, and heavier carbon steel material pins directly inserted into LED are removed after improvement, so that less epoxy resin needs to be filled in the reflective layer of the display, so as to reduce the size and weight. In this way, surface mount LED can easily reduce the product weight by half, making the application more perfect. Generally, SMD LED is a light source with large screen indoor LED, but with the breakthrough of technology, the brightness of SMD LED has been greatly improved, and waterproof treatment can be well solved. Although the brightness of plug-in LED lamp is higher than that of SMD LED lamp, in the production process of LED display screen, the manufacturing process of SMD LED screen is simpler, with low cost, good flatness, high reliability and better white balance. Moreover, the downlight is only suitable for the point spacing above 8mm, and the patch LED lamp is suitable for both the size and the point spacing, so the patch LED is more and more used in outdoor LED display screens.