Multi-Pixel LED Circuit Layout for Uniform Light Emission
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Solution Overview
Problem
Existing LED formations experience brightness variations due to continuous boundaries between LEDs, which can lead to visible gaps and reduced uniformity in light emission, particularly when using single-pixel LEDs.
Innovation Solution
The use of multi-pixel LEDs, where each LED circuit comprises a first electrode in the center and multiple second electrodes in the outer portions, forming direct connections between the electrodes to minimize boundaries and reduce brightness variations, along with a controller to independently activate or deactivate each pixel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-pixel LEDs are arranged in a formation with continuous boundaries, then the device complexity is reduced, but brightness variations and visible gaps increase
Solution Approach 1:
Each LED circuit is divided into multiple independent pixels (e.g., 2x2, 2x3, or 3x3 pixels) instead of using single-pixel LEDs. This segmentation allows the formation to maintain continuous boundaries while reducing brightness variations, as adjacent pixels within the same LED circuit share common electrodes and emit more uniform light.
2Illumination intensity
If multi-pixel LEDs are used to reduce brightness variations, then the illumination uniformity improves, but the device complexity increases
Solution Approach 1:
Multiple pixels are merged into single LED circuits by sharing common anodes or cathodes. For example, a 2x2 pixel LED circuit shares a common first electrode (anode or cathode) across all four pixels, reducing the total number of electrodes and control lines needed while maintaining uniform brightness across the formation.
3Ease of manufacture
If LEDs are arranged in a grid pattern with continuous boundaries, then the ease of manufacture is improved, but the prevalence of visible boundaries increases
Solution Approach 1:
The patent transitions from one-dimensional row/column boundaries to two-dimensional pixel grids within each LED circuit. By arranging pixels in matrices (e.g., 2x2, 3x3) and sharing electrodes across multiple pixels, the design eliminates long continuous boundaries while maintaining manufacturable grid-based formations.
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 configuration significantly reduces brightness variations by eliminating continuous boundaries between LEDs, resulting in a more uniform light emission and fewer visible gaps, especially when arranged in formations like arrays or lattices.
Implementation Method 1
A set of light-emitting diodes (LEDs) may be placed in a formation. A controller may control whether each LED of the set of LEDs is activated or deactivated.
Data Source
AI summary
A system may include a set of light-emitting diode (LED) circuits, wherein each LED circuit of the set of LED circuits comprises: a first electrode; a set of second electrodes; and a set of pixels, wherein each pixel of the set of pixels corresponds to a combination of the first electrode and a respective second electrode of the set of second electrodes. A plurality of pixels may include the set of pixels corresponding to each LED circuit of the set of LED circuits. The first electrode may be located within a center portion of the respective LED circuit, and each second electrode of the set of second electrodes may be located within an outer portion the respective LED circuit. The system also includes a controller circuit configured to control whether each pixel of the plurality of pixels is activated or deactivated.