AMOLED Power Line Layout for High PPI
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Solution Overview
Problem
The existing AMOLED display panels face challenges in increasing the Pixels Per Inch (PPI) due to the limitations in the layout and arrangement of power lines, which affects the resolution and efficiency of the display.
Innovation Solution
The proposed solution involves optimizing the layout of power lines by arranging them between adjacent rows or columns of pixel structures, reducing the number of power lines and minimizing the space they occupy, allowing for a higher PPI by connecting multiple pixel structures to a single power line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If power lines are arranged traditionally (one power line per row or column of pixel structures), then each pixel structure can be independently powered, but the number of power lines increases and occupies more display area, reducing PPI
Solution Approach 1:
The patent merges the power supply function for multiple pixel structures into a single power line. Specifically, one power line is configured to provide power to multiple pixel structures (e.g., 4 pixel structures in a 2x2 arrangement), thereby reducing the total number of power lines needed and the area they occupy, while still ensuring each pixel structure receives adequate power supply.
Solution Approach 2:
The power line is designed to serve multiple functions and multiple pixel structures simultaneously. A single power line acts as a universal power source for several pixel structures, eliminating the need for dedicated power lines for each pixel structure, thus increasing display area efficiency and PPI.
2Productivity
If the number of power lines is reduced to increase PPI, then display area efficiency improves, but power supply reliability to pixel structures may be compromised
Solution Approach 1:
The patent implements local quality by optimizing the power line layout and connection points specifically for multi-pixel structures. The power line is positioned and configured to ensure uniform power distribution to each connected pixel structure, with appropriate width and spacing parameters (e.g., power line width of 2.5-5 μm, distance to adjacent signal lines of 3-4 μm) to maintain reliable power supply while serving multiple pixels.
3Power
If power lines are made wider to ensure adequate power supply to multiple pixel structures, then power delivery capability improves, but the space occupied by power lines increases, reducing PPI
Solution Approach 1:
The patent optimizes the power line width parameter to a specific range (2.5-5 μm) that balances power delivery capability with space efficiency. This parameter change allows the power line to supply adequate power to multiple pixel structures while minimizing the area occupied by the power line itself, thereby maximizing PPI.
Data Source
AI summary
An AMOLED display panel is provided. The AMOLED display panel includes a plurality of pixel structures arranged in a matrix and a plurality of power lines, configured to provide a driving power to the pixel structures, wherein two adjacent rows or two adjacent columns of the pixel structures is a period unit, each period unit is disposed corresponding to one of the power lines, the one of the power lines is disposed between the two adjacent rows or the two adjacent columns of the pixel structures, and the one of the power lines provides the driving power to the two adjacent rows or the two adjacent columns of the pixel structures disposed at two side of the one of the power lines. By practice of the disclosure, the amount of the power lines could be decreased, so high PPI (Pixels Per Inch) of the display panel could be achieved.