There are still extra gaps in the LED display after sintering, which is mainly due to the combined effect of multiple factors.
The following is a detailed introduction to this phenomenon:
I. Manufacturing process factors
1. Module size and splicing method:
- LED display screens are usually spliced by multiple LED modules, and the size and shape of each module may have slight differences.
During the splicing process, these differences may cause the modules to not fit completely together, resulting in gaps.
- Different splicing methods will also affect the size and distribution of the gaps.
For example, the gap of the display screen using seamless splicing technology will be relatively small, but the cost and technical requirements are also higher.
2. Installation accuracy:
- During the installation process, if the workers do not strictly follow the specifications, or the installation equipment is not accurate enough, it may cause position deviations between modules, resulting in gaps.
II. Material factors
1. Differences in thermal expansion coefficients:
- LED display screens generate heat during operation, and different materials have different thermal expansion coefficients. If the thermal expansion coefficients of the materials between the modules are very different, relative displacement will occur when the temperature changes, resulting in the appearance of gaps.
2. Packaging materials:
- The selection and performance of packaging materials will also affect the size of the gaps. For example, if the elastic modulus of the packaging material is low, it is easy to deform when subjected to external force, thereby increasing the width of the gap.
III. Design factors
1. Reserved gap:
- When designing LED display screens, in order to take into account factors such as heat dissipation, maintenance and replacement of modules, a certain gap is usually reserved. These reserved gaps will still exist after sintering.
2. Insufficient seam optimization:
- During the design process, if the seam optimization is insufficient and the matching accuracy and gap control between modules are not fully considered, the gap after sintering will be too large.
IV. Environmental factors
1. Temperature change:
- Changes in ambient temperature will also affect the size of the gap of the LED display screen. For example, in a high temperature environment, the material between the modules will expand, causing the gap to widen; while in a low temperature environment, the opposite may be true.
2. Humidity and corrosion:
- Humidity and corrosion will also affect the gap of the LED display screen. Long-term exposure to high humidity or corrosive environments may cause damage to the connecting parts between the modules, thereby increasing the width of the gap.
Solutions
In order to reduce the gap of LED display screen after sintering, the following measures can be taken:
1. Improve the precision of manufacturing process:
- Strengthen the control of module size and shape to ensure that each module meets the design requirements.
At the same time, improve the installation accuracy and stability of equipment to reduce errors caused by human factors.
2. Optimize material selection:
- Select materials with similar thermal expansion coefficients for packaging and splicing to reduce the impact of temperature changes on the gap.
At the same time, select packaging materials with higher elastic modulus to improve the stability of the module.
3. Strengthen design optimization:
- In the design process, fully consider the matching accuracy and gap control between modules, and use seamless splicing technology or optimize the splicing structure to reduce the size of the gap.
4. Improve environmental conditions:
- Control the working environment temperature and humidity conditions of the display screen to avoid long-term exposure to high humidity or corrosive environment, which may cause damage to the module and increase the gap.
In summary, the existence of excess gaps after sintering of LED display screens is the result of the combined effect of multiple factors.
By improving the manufacturing process accuracy, optimizing material selection, strengthening design optimization and improving environmental conditions, the size of the gap can be effectively reduced and the display effect of the display can be improved.