DIY LED Display: The Perfect Guide to Making from Scratch

LED display screen is an advanced technology that uses semiconductor light-emitting diodes to display information. It consists of thousands or even hundreds of thousands of such diode pixels evenly arranged. These pixels are made of different materials and can present a variety of information such as text, graphics, images, animations, quotes, videos, and video signals. At present, the most common LED colors are red, green, and yellow, and blue and pure green LEDs have also been put into practical use.

Making an LED display is a complex and delicate process that involves multiple steps and technologies. The following are the main steps in LED display production:

1. Design and planning: Determine parameters such as the size, resolution, brightness, color, and communication method of the display screen according to customer needs.

2. Material procurement: Purchase components such as LED modules, circuit boards, power supplies, housings, connectors, etc., and ensure that they meet quality standards.

3. Circuit board production: Use CAD software to design the circuit board layout, and then perform printing, soldering and connector installation.

4. Module installation: Mount the circuit board in an appropriate housing or bracket and ensure the LED modules are properly aligned and connected.

5. Connection and wiring: Connect the power and data lines to ensure stable transmission of signal and power lines.

6. Testing and debugging: Test brightness, color, pixel uniformity, etc., and use professional equipment for calibration to ensure that the display screen is working properly.

7. Quality control and packaging: Conduct comprehensive quality inspection, and package and label the completed display screen.

8. Delivery and installation: Deliver the display to the customer or provide installation guide and technical support.

In addition, the core chip production process of LED displays includes steps such as crystal growth, slicing, polishing, chemical etching, metallization and testing. The packaging process involves connecting the chip to leads and protecting the chip. Commonly used packaging methods include transistor type, driver type and module type. During screen assembly, the packaged LED chips and electronic components need to be assembled on the backplane to ensure the accuracy and quality of the assembly.

When making a large LED display, tens of thousands of light-emitting units need to be installed into a matrix display panel, and all connecting wires should be hidden to prevent the impact of bad weather. Each matrix board requires a power supply and integrates the voltage unit and lighting headers. The outer frame of the display screen should also be properly assembled to ensure the stability and flatness of the unit board.

When choosing an LED display, you need to consider the following tips:

1. Select according to brightness: Indoor and outdoor LED displays have different brightness requirements, so you need to pay attention to details.

2. Select according to the aspect ratio: The aspect ratio of the LED display directly affects the viewing effect and is an important factor to consider when selecting.

3. Select according to the refresh rate: the higher the refresh rate of the LED display, the smoother the picture, so you need to pay attention when selecting.

4. Select according to the control method: There are many control methods for LED display screens. Choose the appropriate control method according to your needs.

5. Selection by color: LED displays can be divided into single color, double color and full color. Choose the appropriate color type according to your needs.