LED Display Panel Segmented Electrode Network for Voltage Drop Reduction
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Solution Overview
Problem
In large liquid crystal display panels, the multitude of traces and electronic components increase internal impedance, causing significant voltage drops and deteriorating display quality due to uneven brightness across the panel.
Innovation Solution
A light emitting diode display panel design featuring bar-shaped electrode layers arranged in specific directions with only a non-complete portion of overlap positions having conductive paths, allowing current to flow through a reduced number of paths, thereby minimizing voltage drops and maintaining consistent brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of traces and electronic components is increased to cover a large display panel area, then the display coverage is improved, but the internal impedance increases causing larger voltage drops
Solution Approach 1:
The patent divides the power transmission paths into multiple segmented traces instead of using few long traces. By segmenting the power delivery network into multiple shorter trace segments connected through intermediate connection points, the total impedance is reduced while maintaining coverage of large display areas
Solution Approach 2:
The patent introduces a two-dimensional mesh network of power traces instead of traditional one-dimensional linear traces. By adding vertical and horizontal power traces that intersect and connect at multiple points, the system reduces impedance by providing multiple parallel current paths across the display panel
2Area of stationary object
If more traces are used to cover larger areas, then the display coverage is improved, but the voltage drop increases due to increased internal impedance
Solution Approach 1:
The power delivery network is segmented into multiple shorter trace sections with intermediate connection points, reducing the impedance of individual trace segments and thereby reducing overall voltage drop while maintaining large area coverage
Solution Approach 2:
Multiple power traces are merged into a mesh network where they intersect and connect at various points, creating parallel current paths that reduce total impedance and minimize voltage drop across the display panel
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 design reduces current flowing through power traces, minimizing voltage drops and maintaining consistent brightness across the display panel, enhancing display quality by reducing impedance-related issues.
Implementation Method 1
a plurality of first bar-shaped electrode layers arranged along a first direction and electrically coupled to a first power supply and the pixel units, and a plurality of second bar-shaped electrode layers arranged along a second direction and electrically coupled to the first power supply
Data Source
AI summary
A light emitting diode (LED) display panel includes a plurality of pixel units, a plurality of first bar-shaped electrode layers arranged along a first direction and a plurality second bar-shaped electrode layers arranged along a second direction. The first bar-shaped electrode layers are coupled to a first power supply and the pixel units, and the second bar-shaped electrode layers are also coupled to the first power supply. Only a non-complete portion of overlap positions between the first and second bar-shaped electrode layers have first conductive paths configured to couple the first bar-shaped electrode layers to the corresponding second bar-shaped electrode layers.