Light Bar Asymmetric Metal Segments Prevent Cracking
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Solution Overview
Problem
In existing light bars, the overlapping projections of metal segments on a substrate lead to reduced thickness and intensity, making them prone to cracking under external forces.
Innovation Solution
The light bar design features a substrate with a first metal layer and a second metal layer, where the projections of intervals between adjacent metal segments on one side do not overlap with those on the other side, ensuring even thickness and strength, and includes light-emitting circuits connected in series and parallel configurations with distinct voltage applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal segments are disposed at intervals on both sides of the substrate, then light-emitting circuits can be electrically connected, but the overlapping projections reduce thickness and intensity making the light bar prone to cracking
Solution Approach 1:
The patent applies asymmetry by making the projection patterns of metal segments on the first side and second side of the substrate different. Specifically, the projections of intervals between adjacent metal segments on the first side do not coincide with the projections of intervals between adjacent metal segments on the second side. This asymmetric arrangement prevents overlapping thin areas, maintaining uniform thickness and structural strength while still enabling electrical connections for light-emitting circuits.
2Ease of operation
If metal segments are disposed at intervals to enable light-emitting circuit connections, then electrical functionality is achieved, but the overlapping projections create weak points under external forces
Solution Approach 1:
The asymmetric projection arrangement ensures that weak points (overlapping intervals) on one side of the substrate do not align with weak points on the other side. This distributes structural strength more evenly across the light bar, preventing concentration of stress at specific locations when external forces are applied, while maintaining the electrical connection capability between metal segments.
Data Source
AI summary
The present disclosure provides a light bar, a backlight assembly and a display device. The light bar includes a substrate; a first metal layer disposed on a first side of the substrate and comprising a plurality of first metal segments disposed at intervals along a length direction of the light bar; a second metal layer disposed on a second side opposite to the first side of the substrate and comprising a plurality of second metal segments disposed at intervals along the length direction of the light bar, a projection of the interval between two adjacent first metal segments on the substrate falls into projections of the second metal segments on the substrate, and a projection of the interval between two adjacent second metal segments on the substrate falls into projections of the first metal segments on the substrate.