Backlight Module Spacer Design for LCD Scratch Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing backlight modules for LCD devices are prone to scratches and deformation due to vibration, which affects the quality of light emission and display quality, as the reflector plate can come into contact with the back plate, leading to friction, heat transfer, and dust-related damage.
Innovation Solution
Incorporating padding blocks between the back plate and the reflector plate to maintain a certain spacing, reducing friction, heat transfer, and dust-related damage, and distributing stress during vibrations to prevent scratches and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the reflector plate is placed close to the back plate to reduce module thickness, then the compactness is improved, but the reflector plate contacts with the back plate causing scratches and deformation
Solution Approach 1:
A cushioning member is introduced as an intermediary component between the reflector plate and the back plate. This cushioning member prevents direct contact between the two rigid components, eliminating scratches and deformation while maintaining the compact structure. The cushioning member acts as a mediator that absorbs mechanical stress and prevents harmful interactions.
Solution Approach 2:
The cushioning member is pre-installed between the reflector plate and back plate to provide protective cushioning before any vibration or stress occurs. This prior cushioning prevents scratches and deformation by absorbing impact forces before they can reach the reflector plate, ensuring durability from the outset.
2Stability of the object's composition
If the reflector plate is fixed rigidly to prevent movement, then the positional stability is improved, but vibration causes friction and heat transfer leading to damage
Solution Approach 1:
The cushioning member serves as a mediator that decouples the reflector plate from direct rigid contact with the back plate. This allows the reflector plate to maintain positional stability while the cushioning member absorbs vibration-induced friction and heat, preventing these harmful factors from damaging the reflector plate.
Solution Approach 2:
The cushioning member converts the harmful vibration-induced friction and heat into a beneficial protective function. By allowing controlled deformation and energy absorption, the cushioning member transforms mechanical stress that would otherwise cause damage into a protective mechanism that dissipates energy safely.
3Reliability
If spacing is maintained between the back plate and reflector plate to prevent contact, then the reflector plate durability is improved, but the module thickness increases
Solution Approach 1:
The cushioning member is designed as a thin, flexible component that provides adequate spacing between the back plate and reflector plate while minimizing thickness increase. This thin film approach maintains durability by preventing contact, yet adds minimal volume to the overall module structure.
Solution Approach 2:
The thickness and material properties of the cushioning member are optimized to provide the minimum necessary spacing for protection while minimizing overall module thickness. By adjusting parameters such as cushioning member thickness, material density, and compression characteristics, the solution achieves both protection and compactness.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A backlight module and a display device are provided. The backlight module includes a back plate (1), a reflector plate (2) provided on a bottom surface of the back plate (1), and a spacer provided between the bottom surface of the back plate (1) and the reflector plate (2) and configured to keep a certain spacing (h) between the bottom surface of the back plate (1) and the reflector plate (2). The display device includes the backlight module. The display device has improved display quality.