Display Device Subpixel Layout for Short Circuit Prevention
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Solution Overview
Problem
High-resolution display devices face challenges with short circuits between electrodes due to limited design conditions in subpixel layouts and reduced aperture ratios caused by capacitor area occupation.
Innovation Solution
A display device configuration with a substrate, light shielding layer, and strategically arranged power lines, data lines, and sensing lines on the same plane as the light shielding layer, along with a scan line on a different layer, to prevent short circuits and enhance aperture ratio by increasing the insulating layer thickness between vertically and horizontally arranged lines.
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 design conditions are restricted and short circuits may occur between electrodes
Solution Approach 1:
The patent applies dimensionality change by moving power lines from the vertical direction to the horizontal direction, placing them on the same plane as the light shielding layer rather than stacking them vertically with data lines. This spatial reconfiguration reduces the risk of short circuits while maintaining high-resolution display capabilities.
Solution Approach 2:
The patent segments the circuit layout by separating power lines and data lines into different spatial arrangements. Power lines are disposed horizontally on the same plane as the light shielding layer, while data lines are arranged vertically, creating distinct pathways that prevent short circuits in high-resolution subpixel layouts.
2Power
If the capacitor area is increased within the subpixel, then the driving capability is improved, but the aperture ratio is reduced due to occupied area
Solution Approach 1:
The patent utilizes the horizontal plane dimension by disposing power lines on the same plane as the light shielding layer, effectively using the available space without vertical stacking. This allows for optimized capacitor placement that maintains driving capability while maximizing the aperture ratio through efficient space utilization.
3Reliability
If the insulating layer thickness is increased between vertically and horizontally arranged lines, then short circuit prevention is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent extracts the power lines from the vertical arrangement and repositions them horizontally on the same plane as the light shielding layer. This separation eliminates the need for thick insulating layers between vertically and horizontally arranged lines, reducing manufacturing complexity while maintaining short circuit prevention through spatial separation.
Data Source
AI summary
A display device includes a substrate, a light shielding layer on the substrate, first to fourth subpixels sequentially arranged on the substrate including the light shielding layer in a horizontal direction, a first power line disposed on one side of the first subpixel and shared by the first and second subpixels, a sensing line disposed between the second subpixel and the third subpixel and shared by the first to fourth subpixels, a second power line disposed on one side of the fourth subpixel and shared by the third and fourth subpixels, first and second data lines between the first and second subpixels and third and fourth data lines between the third and fourth subpixels; and a scan line extended on the first to fourth subpixels in the horizontal direction.