Display Device Subpixel Layout Layering for Short Circuit Prevention
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Solution Overview
Problem
High-resolution display devices face challenges in preventing short circuits between electrodes due to limited design conditions in compact subpixel layouts, leading to defective drives.
Innovation Solution
A display device configuration with strategically arranged power lines, sensing lines, and data lines on different layers, allowing for closer placement and reduced branch portions of the scan line, thereby minimizing the risk of short circuits and improving design efficiency and aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display panel is implemented as a high-resolution display panel with smaller-sized pixels, then the resolution is improved, but the risk of short circuit between electrodes increases due to limited design conditions in compact subpixel layouts
Solution Approach 1:
The patent applies layering to arrange different types of lines (power lines, sensing lines, data lines) on different layers. This dimensional separation allows lines that would otherwise be in close proximity on the same layer to be spatially separated in the vertical dimension, preventing short circuits while maintaining high-resolution compact subpixel layouts
Solution Approach 2:
The patent segments the conductive lines into different functional groups (power lines, sensing lines, data lines) and assigns them to different layers. This segmentation allows each line type to be independently routed and managed, reducing the risk of short circuits between different line types in high-resolution displays
2Area of moving object
If the subpixel layout is made more compact to accommodate high-resolution requirements, then the pixel size is reduced, but the design conditions become limited and short circuits may occur
Solution Approach 1:
By utilizing multiple layers, the patent provides additional spatial freedom for routing lines without increasing the planar footprint of subpixels. This allows compact subpixel designs to be achieved while maintaining adequate line spacing through vertical separation on different layers
Solution Approach 2:
The patent employs a shared sensing line that serves multiple subpixels, reducing the total number of lines required and simplifying the layout design. This multi-functional approach allows for more compact subpixel arrangements without proportionally increasing line complexity
3Area of stationary object
If more lines are arranged in close proximity to maintain compact subpixel design, then the aperture ratio is improved, but the risk of short circuit between electrodes increases
Solution Approach 1:
The patent arranges power lines, sensing lines, and data lines on different layers, allowing them to be in close proximity horizontally to maximize aperture ratio while preventing short circuits through vertical separation. This layering approach enables high aperture ratios without compromising electrode isolation
Data Source
AI summary
A display device, includes a substrate; first to fourth subpixels sequentially arranged on the substrate; a first power line on a left side of the first subpixel and shared by the first and second subpixels; a sensing line between the second subpixel and the third subpixel and shared by the first to fourth subpixels; a second power line on a right side of the fourth subpixel and shared by the third and fourth subpixels; and a first data line on the left side of the first subpixel, a second data line on a right side of the second subpixel, a third data line on a left side of the third subpixel, and a fourth data line on the right side of the fourth subpixel. The first and second power lines and the sensing line are disposed on a layer different from the first to fourth data lines.