Backlight Reflective Sheet Lug Clamping Mechanism
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Solution Overview
Problem
Existing backlight technologies face challenges in aligning and repairing the reflective sheet, which is often damaged during maintenance, and result in waste due to the use of double-sided adhesive, leading to increased manufacturing costs.
Innovation Solution
A backlight design featuring a reflective sheet with protruding lugs that fit into clamp slots on the frame, allowing for secure clamping instead of adhesive attachment, facilitating easier assembly, maintenance, and reducing material waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the reflective sheet is attached using double-sided adhesive, then the reflective sheet can be fixed to the frame, but it is difficult to align the reflective sheet and causes damage during repair
Solution Approach 1:
The reflective sheet is segmented with protrusions that engage with corresponding recesses in the frame, dividing the attachment function into discrete mechanical interfaces rather than relying on continuous adhesive bonding. This segmentation enables precise alignment during assembly and facilitates clean separation during repair without damaging the reflective sheet material.
Solution Approach 2:
The patent replaces the chemical bonding mechanism (double-sided adhesive) with a mechanical fastening system consisting of protrusions and recesses. This mechanical substitution eliminates the alignment difficulties and repair damage issues associated with adhesive bonding, as the mechanical features provide self-aligning geometry and allow for non-destructive removal and reattachment.
2Strength
If the reflective sheet is fixed with double-sided adhesive, then the reflective sheet can be held in place, but the adhesive loses its adhesiveness after disassembly and cannot be recycled
Solution Approach 1:
The mechanical protrusion-recess system allows the reflective sheet to be repeatedly attached and detached without degrading the fastening mechanism. Unlike single-use adhesive bonds that lose effectiveness after disassembly, the mechanical features can be reused indefinitely, eliminating material waste and enabling full recycling of the reflective sheet and frame components.
3Stability of the object's composition
If the reflective sheet is attached to the frame, then the reflective sheet is secured, but the reflective sheet may fold or print during tearing
Solution Approach 1:
The segmented mechanical connection at the edges of the reflective sheet allows for controlled attachment and detachment without subjecting the sheet body to tearing forces. The protrusions and recesses concentrate the mechanical interface at discrete locations, preventing the propagation of tears or folds across the reflective surface that would occur with adhesive bonding and forced separation.
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 enhances assembly efficiency, prevents damage to the reflective sheet during maintenance, and reduces waste and manufacturing costs by eliminating the need for double-sided adhesive, while maintaining effective light utilization.
Implementation Method 1
a reflective sheet for reflecting light towards a light exit of the backlight
Data Source
AI summary
This disclosure provides a backlight comprising an optical component and a frame that comprises a receiving part, said optical component being disposed in said receiving part, said optical component comprising a reflective sheet for reflecting light towards a light exit of the backlight, said reflective sheet comprising a reflective sheet body and a lug arranged on at least one side of the reflective sheet body, said lug protruding outwardly of the reflective sheet body along a length or a width direction of the reflective sheet body, a clamp slot corresponding to the lug being arranged on a side wall of said receiving part, said lug being arranged within the clamp slot. Correspondingly, this disclosure provides also a liquid crystal module and a display device. Compared with the prior art, during repair and maintenance, the backlight of this disclosure avoids the damage to the reflective sheet caused by tearing double-sided adhesive and avoids waste of the double-sided adhesive, thereby reducing the manufacturing cost.