Peripheral Pixel Layout Optimization for Narrow Border Displays
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Solution Overview
Problem
Light-emitting diode display panels face challenges in achieving a narrow or borderless design due to the presence of non-display function circuits around the perimeter, making it difficult to minimize or eliminate the border area.
Innovation Solution
The design incorporates a substrate with standard and peripheral pixels, where the peripheral pixels have a different distance between their transistors and pads compared to standard pixels, allowing for a more compact layout and positioning of pixel driving circuits and pads to bring light-emitting diode devices closer to the edges, thus creating a narrow or borderless display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-display function circuits are provided around the periphery of the light-emitting diode display panel, then the display function is improved, but the border width increases
Solution Approach 1:
The patent applies local quality by differentiating the structure between standard pixels in the intermediate region and peripheral pixels in the peripheral region. Peripheral pixels have a different distance between the second transistor and pad compared to standard pixels, allowing optimized layout in different zones to minimize border width while maintaining display function.
Solution Approach 2:
The patent rearranges the layout of pixel driving circuits and pads in the peripheral region by changing the distance parameter A2, effectively utilizing spatial dimension optimization to reduce the border area occupied by non-display circuits.
2Adaptability or versatility
If the distance between the second transistor and pad in peripheral pixels is increased, then the layout flexibility is improved, but the pixel density decreases
Solution Approach 1:
Different distance parameters (A1 for standard pixels, A2 for peripheral pixels) are applied locally to different regions, providing layout flexibility in the peripheral region while maintaining high pixel density in the intermediate region where standard pixels are located.
Data Source
AI summary
A display apparatus includes a substrate and pixels disposed on the substrate. Each of the pixels includes sub-pixels. The substrate has an intermediate region and a peripheral region, where the peripheral region is located between an edge of the substrate and the intermediate region. The pixels include standard pixels disposed in the intermediate region and peripheral pixels disposed in the peripheral region. A color displayed by a sub-pixel of a standard pixel and a color displayed by a sub-pixel of a peripheral pixel are the same, and a distance between a second transistor of the sub-pixel of the standard pixel and a pad of the sub-pixel of the standard pixel is not equal to a distance between a second transistor of the sub-pixel of the peripheral pixel and a pad of the sub-pixel of the peripheral pixel.