LED Arrangement with Series-Connected Groups
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Solution Overview
Problem
Existing LED arrangements face challenges in achieving a compact and cost-effective design due to high currents required for large numbers of LEDs, which complicates the design and increases costs, especially when operating voltages exceed safety limits, and excessive cabling complexity hinders compact arrangements.
Innovation Solution
The LED arrangement features a substrate with spatially separated conductive coating regions, subdivided into contact and transition regions, where each LED group is connected in series through these transition regions, reducing total current requirements and allowing for a compact, scalable design with lower current-to-voltage ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple LEDs are arranged at a common potential with a large-area metallic coating, then the spacing between LEDs is minimized and arrangement is simplified, but the operating current becomes very high when the number of LEDs is large
Solution Approach 1:
The invention divides the LED array into multiple LED groups, where each group is connected in series to form a series string. This segmentation allows the total voltage to be distributed across multiple groups rather than requiring all LEDs to operate at the same potential, thereby reducing the current requirement while maintaining compact arrangement.
Solution Approach 2:
The invention introduces a new dimensional approach by organizing LEDs into groups arranged in a grid pattern with alternating polarity connections. This spatial organization allows series connection of groups while maintaining compact two-dimensional layout, resolving the contradiction between compact spacing and current reduction.
2Reliability
If multiple supply leads are provided to supply current between individual LEDs, then current distribution is improved, but cabling complexity increases and compact arrangement is hindered
Solution Approach 1:
The invention merges the function of multiple supply leads into a simplified series connection architecture. By connecting LED groups in series, only two external supply leads are needed to power the entire array, eliminating the need for complex multi-lead cabling while maintaining reliable current distribution through the series string.
3Use of energy by moving object
If all LEDs are connected in series, then operating current is reduced, but operating voltage becomes very high which may exceed safety limits
Solution Approach 1:
The invention segments the series connection into multiple parallel strings of LED groups. Each string operates at a reduced voltage level, and the parallel configuration allows the system to maintain low current operation while distributing the total voltage requirement across multiple independent strings, thereby avoiding excessive voltage in any single string.
4Illumination intensity
If a large number of LEDs are used to provide high luminance, then luminance is improved, but the arrangement becomes less compact due to spacing requirements
Solution Approach 1:
The invention utilizes a two-dimensional grid arrangement of LED groups with alternating polarity connections. This spatial organization allows maximum packing density by eliminating the need for large spacing between individual LEDs, as the series connection of groups enables compact routing of connections while maintaining electrical functionality.
Data Source
AI summary
An LED arrangement includes two current connection regions arranged on a substrate, a plurality of LED groups including LEDs, each having first and second LED contact regions. The LED arrangement includes a plurality of electrically conductive coating regions spatially separated from one another on the substrate and each subdivided into contact and transition regions, wherein the second current connection region constitutes one of the transition regions, each LED group is arranged on exactly one assigned coating region, one of the current connection regions electrically conductively connects to a second LED contact region of one of the LEDs arranged at the edge region, and, apart from the other current connection region, a relevant transition region electrically conductively connects to a second LED contact region of one of the LEDs of an adjacent LED group arranged at the edge region such that the plurality of LED groups are connected in series.