Backlight Module Side Reflector Plate Protection
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Solution Overview
Problem
Conventional backlight modules suffer from corner leaking due to separation between the light guide plate and the side reflector plate caused by temperature-induced expansion and abrasion, leading to reduced luminous intensity and illumination homogeneity.
Innovation Solution
The implementation of a backlight module design featuring corner pieces made of white rubber material with an L-shaped configuration, positioned between the backplane and the light guide plate, and anti-friction blocks to prevent direct contact between the side reflector plate and the corner pieces, ensuring a separate arrangement that eliminates abrasion and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the side reflector plate is arranged close to the light guide plate to improve light reflection efficiency, then light utilization rate is improved, but the side reflector plate and corner pieces come into contact causing abrasion and separation
Solution Approach 1:
The patent introduces anti-friction blocks as intermediary elements positioned between the side reflector plate and the corner pieces. These blocks serve as a mediator that prevents direct contact and abrasion between the reflector plate and corner pieces, while still allowing the reflector plate to be positioned close to the light guide plate for effective light reflection. The anti-friction blocks absorb the mechanical stress and prevent separation, thus resolving the contradiction between light utilization and attachment stability.
2Temperature
If the light guide plate is allowed to expand and contract freely with temperature variation, then thermal stress is reduced, but separation between the side reflector plate and light guide plate occurs leading to corner leaking
Solution Approach 1:
The patent employs anti-friction blocks that are positioned in advance between the side reflector plate and corner pieces to cushion against future thermal expansion and contraction. These blocks are specifically designed with friction-reducing properties to accommodate the natural thermal movement of the light guide plate without causing separation. By providing this cushioning protection beforehand, the system maintains reliable attachment during temperature variations, preventing corner leaking and maintaining illumination homogeneity.
3Ease of manufacture
If corner pieces are used to position the light guide plate, then assembly is simplified, but the side reflector plate comes into contact with corner pieces causing abrasion
Solution Approach 1:
The patent introduces anti-friction blocks as intermediary elements positioned between the side reflector plate and the corner pieces. These blocks serve as a mediator that prevents direct contact and abrasion between the reflector plate and corner pieces, while still allowing the reflector plate to be positioned close to the light guide plate for effective light reflection. The anti-friction blocks absorb the mechanical stress and prevent separation, thus resolving the contradiction between light utilization and attachment stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively prevents corner leaking, maintaining luminous intensity and illumination homogeneity, thereby enhancing the quality of the backlight module.
Implementation Method 1
a side reflector plate arranged at one side of the light guide plate that is distant from the light bar, and four corner pieces arranged between the backplane and the light guide plate... The side reflector plate has a length that is less than or equal to a distance between the two corner pieces so as to achieve a separate arrangement of the side reflector plate and the corner pieces
Implementation Method 2
The corner pieces are made of a rubber material. The corner pieces have surfaces that face the light guide plate and are of a white color... When the light guide plate expands or contracts due to be affected by temperature variation, which causing reciprocal abrasion between the side reflector plate 900 and the rubber blocks 700
Data Source
AI summary
The present invention provides a backlight module, which includes a backplane, a light guide plate arranged inside the backplane, a light bar arranged at one side of the light guide plate, a side reflector plate arranged at one side of the light guide plate that is distant from the light bar, and four corner pieces arranged between the backplane and the light guide plate. The corner pieces are made of a rubber material. The corner pieces have surfaces that face the light guide plate and are of a white color. The side reflector plate is arranged between two of the corner pieces. The side reflector plate has a length that is less than or equal to a distance between the two corner pieces so as to achieve a separate arrangement of the side reflector plate and the corner pieces.