Question

What are the structural components of LED display screen modules?

Answer 1

The LED display module is the basic unit that constitutes the LED display. Its structure is quite complex but the functions of each component are clear. 

The following is a detailed introduction to the structure and composition of the LED display module:

1. LED lamp beads (light emitting diodes):

• LED lamp beads are the core light-emitting component of the module. They are usually composed of LED lamp beads in three colors: red, green, and blue (RGB). By adjusting the brightness of the three colors, various color display effects can be produced.
• LED lamp beads use packaging technology, such as SMD, DIP, etc., to protect the lamp beads and improve reliability.
• The brightness, color temperature and lifespan of LED lamp beads will directly affect the display effect and performance of the entire display.

2. PCB board (printed circuit board):

• The PCB board is the main support structure of the module and is responsible for connecting and fixing various electronic components.
• There is a circuit on the PCB board, which is used to transmit the signal output by the driver IC to the LED lamp bead to control its light emission.
• The material and design of the PCB board directly affect the heat dissipation performance, stability and reliability of the module.

3. Driver IC (integrated circuit):

• The driver IC is the key component to control the light emission of LED lamp beads. It receives data from the control system and converts it into signals that the LED lamp beads can understand.
• The performance and quantity of the driver IC determine the number of LED beads that the module can control, thereby determining the resolution and grayscale of the display.
• Commonly used drive ICs include constant current drive and constant voltage drive. Choose the appropriate drive method according to the specific application scenario.

4. Power module:

• The power module is responsible for providing stable voltage and current to the module to ensure the normal operation of the LED lamp beads and driver IC.
• Power modules usually include transformers, rectifiers, filters and other components to convert the input AC power into the DC power required by the module.

5. Heat dissipation structure:

• Since LED lamp beads generate heat when working, the module needs to design a reasonable heat dissipation structure to ensure that the temperature of the module will not be too high when working for a long time.
• The heat dissipation structure usually includes heat sinks, fans, heat pipes and other components, which dissipate heat through natural heat dissipation or forced heat dissipation.

6. Module shell:

• The module shell is used to protect the electronic components inside the module and prevent damage to the module from the external environment.
• The casing is usually made of aluminum alloy or plastic and has functions such as waterproof, dustproof, and shockproof.
• The shell design will also take factors such as heat dissipation performance and installation convenience into consideration.

7. Connectors:

• Connectors are used to connect modules to modules to form a complete LED display.
• Connectors include data cables, power cables, fixing screws and other components to ensure that modules can be connected together stably and reliably.

8. Auxiliary components:

• The module also includes some auxiliary components, such as resistors, capacitors, inductors, etc., used for circuit protection, filtering, voltage stabilization and other functions.
• Although these auxiliary components are not large in number, they also play an important role in the stability and performance of the module.

The above is a detailed introduction to the structure and composition of the LED display module. In actual applications, different types of LED display modules may have differences in structural composition, but the basic composition principles are similar.

Answer 2

The structure of the LED display module mainly includes the following parts:

1. LED lamp bead: This is a light-emitting unit used to emit three primary colors of red, green and blue light, which can be mixed into various colors through different combinations and changes of on and off. There will be thousands of LED lamp beads on a module.

2. Driver IC: This is the chip that controls the content displayed on the LED display. When receiving instructions from the control system, the driver IC will control the LED lamp lights to turn on or off according to the instructions to complete the display of the image. Each module will have multiple driver ICs.

3. PCB board: Printed circuit board, which integrates electronic components such as control chips and driver chips, and connects various components. It is the control center of the LED display module. The LED lamp beads and driver IC are installed on the PCB board, and the PCB board provides power lines and brackets.

4. Commonly used components: including resistors, capacitors, connectors, etc., used to protect and connect various components.

5. Module shell: Generally made of aluminum alloy or plastic, it is used to wrap and protect the above components and realize connection with other modules or displays.

6. Data transmission line: used to transmit image signal data between modules or between modules and control cards. There are two common types: parallel lines and serial lines.

In addition, the LED display module may also include some other auxiliary components, such as heat dissipation devices, dust covers, etc., to improve the stability and service life of the display.