Display Panel Power Supply Structure Common Electrode
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Solution Overview
Problem
Current display panels with light-emitting diodes experience significant power consumption loss and uneven display due to voltage drops across power supply lines, which are not adequately addressed by existing technologies.
Innovation Solution
Incorporating a common electrode with a predetermined area in the power supply structures of the display panel to reduce resistance and voltage drop, thereby minimizing power consumption loss and improving display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional power supply lines are used to supply power to light-emitting diodes, then the display panel can be manufactured with conventional structures, but significant voltage drop occurs causing excessive power consumption loss and uneven display
Solution Approach 1:
The power supply structure is segmented into multiple independent power supply lines (first power supply line and second power supply line) that are separately connected to different electrodes of the light-emitting diode. This segmentation allows each power supply line to be optimized independently, reducing voltage drop and power consumption loss while maintaining manageable structural complexity
Solution Approach 2:
The patent introduces a third dimension to the power supply structure by adding a common electrode that extends in a direction different from the traditional planar power supply lines. This dimensional change creates additional current pathways and reduces resistance without significantly increasing overall structural complexity
2Manufacturing precision
If traditional power supply lines are used, then the manufacturing process remains simple, but voltage drop causes uneven display across the panel
Solution Approach 1:
The power supply structure implements local quality by providing different power supply configurations for different regions of the display panel. The first and second power supply lines are strategically positioned to address voltage drop issues in specific areas, ensuring uniform display quality across the entire panel while using standardized manufacturing processes
Solution Approach 2:
The common electrode is designed to maintain equipotential conditions across the light-emitting diode by providing a reference potential that compensates for voltage drops in the power supply lines. This ensures uniform electrical conditions throughout the panel, improving display uniformity without complicating the manufacturing process
3Loss of energy
If power supply lines with sufficient cross-section are used to reduce voltage drop, then power consumption loss decreases, but the occupied area and device complexity increase
Solution Approach 1:
The patent merges the functions of multiple power supply lines and the common electrode into an integrated power supply structure. By combining these elements, the system achieves reduced voltage drop and power consumption loss while utilizing the available area more efficiently, avoiding the need for excessively thick individual power supply lines
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
The implementation of a common electrode in the power supply structures effectively reduces voltage drop and power consumption loss, leading to improved display performance and reduced unevenness.
Implementation Method 1
at least one power supply structure includes the common electrode configured to have a predetermined area. Accordingly, a resistance of the power supply structure can be reduced, thereby reducing the voltage drop of signal transmission over the power supply structure
Data Source
AI summary
A display panel and a display device are provided. The display panel includes an array substrate and a pixel array. The pixel array includes a plurality of subpixels, each of which includes at least one light-emitting diode that includes a first electrode and a second electrode. The array substrate includes a first power supply structure, a second power supply structure, and a plurality of pixel circuits. The first power supply structure is electrically connected to the first electrode of the light-emitting diode by the pixel circuits, and the second power supply structure is electrically connected to the second electrode of the light-emitting diode. At least one of the first power supply structure and the second power supply structure includes at least one common electrode.