LCD Cover Bottom Protrusions for Repairable Backlight Assembly
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Solution Overview
Problem
Existing liquid crystal display devices with minimized bezels face challenges in component separation due to strong adhesive forces, making repair and reassembly difficult without risking damage to the liquid crystal panel or optical sheets.
Innovation Solution
The liquid crystal display device incorporates a cover bottom with protrusions and a support member fastened together by screws, allowing for easier disassembly and repair while maintaining a minimized bezel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive members are used to fix components with strong adhesive force, then component fixation reliability is improved, but ease of repair and disassembly deteriorates
Solution Approach 1:
The invention divides the fixation system into separate functional elements: magnetic attraction areas for holding components together during normal operation, and mechanical fastening areas with screw holes for controlled disassembly. This segmentation allows the component to maintain strong fixation during use while enabling easy separation when repair is needed, resolving the contradiction between reliability and ease of repair.
Solution Approach 2:
The invention creates a dynamic fixation system that can transition between two states: a magnetically held state during normal operation providing strong fixation, and a mechanically detachable state during repair providing easy disassembly. The magnetic and mechanical fastening areas work together to provide context-dependent fixation strength, resolving the contradiction between reliable fixation and ease of repair.
2Reliability
If adhesive members are used to fix components, then component fixation reliability is improved, but risk of damage to liquid crystal panel or optical sheets during separation increases
Solution Approach 1:
The invention separates the fixation function from the component structure by providing dedicated magnetic and mechanical fastening areas on the support member that do not contact or exert excessive force on the liquid crystal panel or optical sheets. This segmentation isolates the fixation mechanism from fragile components, reducing damage risk while maintaining fixation reliability.
Solution Approach 2:
The magnetic and mechanical fastening areas act as intermediary elements between the support member and the liquid crystal panel/optical sheets. These intermediaries provide the necessary fixation force without directly contacting or damaging the fragile components, thereby reducing the harmful effects of separation while maintaining reliable fixation.
3Area of stationary object
If bezel width is minimized to maximize display area, then display area ratio is improved, but ease of access to components for repair deteriorates
Solution Approach 1:
The invention segments the support member into distinct functional zones: magnetic fastening areas for secure component attachment, mechanical fastening areas with screw holes for controlled disassembly, and positioning structures for precise component placement. This segmentation enables easy access and repair despite minimized bezel width by providing clear separation and access points for components.
Data Source
AI summary
A liquid display device includes a cover bottom including a first cover portion of a first direction and a second cover portion of a second direction; a backlight over the cover bottom and including a light source, a diffusion plate, and an optical sheet; a support member maintaining a distance between the light source and the diffusion plate and including a first support portion and a second support portion; and a liquid crystal panel over the backlight and the support member, wherein the support member and the cover bottom are fastened to each other by a plurality of screws, and wherein the first cover portion includes a plurality of protrusions protruding outward from an outer surface of the second cover portion and corresponding to the plurality of screws, respectively.