LCD Backlight Bracket FPCB Rear Mounting Thickness Reduction
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Solution Overview
Problem
Existing liquid crystal display (LCD) backlight devices face limitations in reducing thickness and width due to preset thicknesses of metal components and a folded Flexible Printed Circuit Board (FPCB) structure, which also compromises the rigidity of the set bracket and can lead to issues like white lines or points from external impacts.
Innovation Solution
The LCD backlight device features a set bracket that encloses the backlight unit with a folded LCD FPCB from the module to the rear surface of the set bracket, eliminating the need for a metal frame and reducing thickness and width, while maintaining rigidity by avoiding the formation of openings that weaken the bracket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal frame with preset thickness is used to support the backlight unit and LCD module, then structural strength and rigidity are maintained, but the overall thickness and width of the device cannot be reduced further
Solution Approach 1:
The patent removes the metal frame structure entirely and replaces it with a set bracket that directly mounts the backlight unit and LCD module. This extraction of the metal frame eliminates the thickness constraint imposed by the preset metal component dimensions while maintaining structural support through the bracket design.
Solution Approach 2:
The patent changes the dimensional parameters of the support structure by eliminating the metal frame's fixed thickness requirements. The set bracket is designed with optimized dimensions that allow for reduced device thickness while providing adequate support, thereby changing the structural parameters from metal-frame-based to bracket-based dimensions.
2Ease of operation
If an opening is formed in the set bracket to accommodate the folded LCD FPCB, then the FPCB can be positioned, but the rigidity of the set bracket is reduced
Solution Approach 1:
The patent positions the LCD FPCB on the rear surface of the set bracket rather than creating an opening in the bracket body. This dimensional relocation allows the FPCB to be accommodated without compromising the structural integrity of the set bracket, as the FPCB is mounted on a different surface plane.
Data Source
AI summary
A liquid crystal display backlight device for reducing a thickness of a terminal is provided. The liquid crystal display backlight device includes a backlight unit disposed at a lower part of a liquid crystal display module, a set bracket for mounting while enclosing the backlight unit, and a liquid crystal display Flexible Printed Circuit Board (FPCB) folded from the liquid crystal display module to a rear surface of the set bracket. Therefore, a thickness and width of the liquid crystal display backlight device can further be reduced and thus a user can easily carry the liquid crystal display backlight device. Further, rigidity of the set bracket can be prevented from being weakened.