The COB LED Video Wall Factory Solution emphasizes the use of COB packaging technology, and realizes the production of high-brightness, high-reliability, and high-heat dissipation LED screens by directly fixing the LED chip on the PCB board.
This solution reduces the production process, improves the luminous uniformity and stability of the display screen, and the dead light rate is extremely low. The factory is equipped with a high-cleanliness production environment to ensure product quality and meet the market demand for high-definition and high-reliability LED video walls.
Introduction
With the rapid development of science and technology, LED display walls have become an important part of modern display technology.
LED screens with COB (Chip On Board) packaging technology have gradually occupied an important position in the field of LED display walls due to their unique production process and high-performance characteristics.
This solution aims to introduce the construction plan of the COB LED video wall factory in detail, including technical principles, production processes, quality control, etc., in order to provide useful reference for related enterprises and projects.
COB LED Video Wall Technical Principles
The COB LED video wall adopts chip-on-board packaging technology, that is, the LED chip is directly fixed on the PCB board, and wire bonding and packaging are performed. This packaging method realizes the “ten-proof” characteristics of the LED screen, including waterproof, dustproof, UV-proof, and corrosion-proof, while reducing production costs.
COB packaging technology makes the LED chip emit more concentrated light, changing from a point light source to a surface light source, emitting more uniform light, and the display effect is clearer and brighter.
Production process
Manufacturing substrate: The substrate material usually uses metal materials with good heat dissipation, such as aluminum substrates or copper substrates. During the manufacturing process, milling, grinding, and polishing are required to ensure that the flatness and surface roughness of the substrate meet the requirements.
Prepare LED chips: Select high-brightness LED chips and perform wafer sorting to ensure that the brightness and color of each chip are consistent. Subsequently, use high-precision welding equipment and technology to weld the chip to the lead.
Paste LED chips: Apply conductive glue or thermal conductive glue on the working area of the substrate, and then paste the chip on it. Ensure that the position and angle of the chip are correct, and the conductive glue or thermal conductive glue is evenly applied to avoid gaps or bubbles that cause poor heat dissipation.
Silver paste injection: Apply a layer of conductive glue between the LED chip and the substrate, and then use a silver paste injection machine to inject the silver paste into the conductive glue. Silver paste has good conductivity and can effectively connect the LED chip and the substrate, providing good electrical connection and thermal conduction.
Encapsulation film: Use glue or other sealing materials to encapsulate the LED chip and the substrate to protect the chip from moisture and dust, and enhance mechanical strength and durability. The encapsulation film can also adjust the direction of light and improve the utilization rate of light.
Quality control
Raw material testing: Strict quality inspection of purchased raw materials such as LED chips, substrates, glue, etc. to ensure that the quality of raw materials meets production requirements.
Process control: During the production process, key processes such as welding, pasting, silver paste injection, etc. are strictly controlled to ensure that the quality of each process is stable and reliable.
Finished product testing: Comprehensive quality inspection of the completed COB LED video wall, including electrical parameter testing, luminous flux testing, color temperature testing, and light intensity uniformity testing. Ensure that the quality of the finished product meets relevant standards and customer requirements.
COB LED Video Wall Factory
Shenzhen Chifuyi Technology Co., Ltd. (CHIFE) is a high-quality COB LED display screen manufacturer in China, a global high-end COB LED display screen company, and supports COB LED display screen customization.
The products we provide include rental LED display screens, outdoor LED display screens, creative LED display screens, and indoor LED display screens.
CHIFE COB LED display screen manufacturing factory provides comprehensive and high-quality services, from material procurement to product manufacturing, to after-sales maintenance, and strictly controls the entire process to ensure excellent product quality.
We are committed to providing customers with customized LED display screen solutions to meet the needs of different industries and different scenarios, and bring customers excellent visual experience and worry-free use experience.
FAQs
What are the advantages of COB LED video wall over traditional LED screens?
COB LED video wall has the following advantages over traditional LED screens:
- High reliability: COB packaging technology realizes the “ten-proof” characteristics of LED screens, including waterproof, dustproof, UV protection, etc., which significantly improves the reliability of the display.
- Better display effect: COB packaging technology makes the LED chip emit more concentrated light, from a point light source to a surface light source, the light emission is more uniform, and the display effect is clearer and brighter.
- Higher stability: Since COB packaging technology simplifies the production process and reduces the chance of damage, the stability of the LED screen is further improved. For example, the dead light rate of the LED screen with COB packaging technology is only 300,000/1, which is much lower than the dead light rate of traditional SMD packaging.
- Excellent heat dissipation performance: The direct contact between the LED chip and the PCB board greatly improves the heat dissipation efficiency, which helps to improve the brightness and uniformity of the display.
What are the key steps in the production process of COB LED video wall?
The key steps in the production process of COB LED video wall include:
- Manufacturing substrate: Select a metal material with good heat dissipation as the substrate, such as an aluminum substrate or a copper substrate, and perform milling, grinding and polishing processes.
- Prepare LED chips: Select high-brightness LED chips and perform wafer sorting to ensure that the brightness and color of each chip are consistent.
- Paste the LED chip: Apply conductive glue or thermal conductive glue on the working area of the substrate, and then paste the chip on it, ensuring that the position and angle of the chip are correct.
- Silver paste injection: Apply a layer of conductive glue between the LED chip and the substrate, and then use a silver paste injection machine to inject silver paste into the conductive glue to provide good electrical connection and thermal conduction.
- Encapsulation film: Use glue or other sealing materials to encapsulate the LED chip and substrate to protect the chip from moisture and dust, and enhance mechanical strength and durability.
How to ensure the quality of COB LED video wall?
Ensuring the quality of COB LED video wall needs to be carried out from the following aspects:
- Raw material testing: Strict quality testing of purchased raw materials such as LED chips, substrates, glue, etc. to ensure that the quality of raw materials meets production requirements.
- Process control: During the production process, key processes are strictly controlled, such as welding, pasting, silver paste injection, etc., to ensure that the quality of each process is stable and reliable.
- Finished product inspection: Comprehensive quality inspection of the COB LED video wall after production, including electrical parameter test, luminous flux test, color temperature test and light intensity uniformity test, etc., to ensure that the quality of the finished product meets the relevant standards and customer requirements.
What is the future development trend of COB LED video wall?
The future development trend of COB LED video wall is mainly reflected in the following aspects:
- Continuous technology optimization: With the continuous advancement of technology, COB packaging technology will be continuously optimized to further improve the performance and reliability of the display.
- Cost gradually reduced: With the application of customers and market promotion, the cost of COB LED video wall will gradually decrease, making it more competitive.
- Expanded application field: COB LED video wall will be used in more fields with its excellent performance and reliability, such as outdoor advertising, stadiums, conference rooms, etc.
Summary
This plan introduces the construction plan of COB LED video wall factory in detail, including technical principles, production processes, quality control and other aspects. COB packaging technology enables LED video wall to have higher brightness, better stability and longer service life.
At the same time, this plan also emphasizes the importance of quality control, and ensures that product quality meets relevant standards and customer requirements through strict raw material testing, process control and finished product testing.