Display Panel Groove Wiring for High-Transmittance Component Areas
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Solution Overview
Problem
Display panels face challenges in extending display areas to accommodate electronic components while maintaining image display and light transmittance, especially when components are integrated into the display region, leading to reduced resolution and light transmittance issues.
Innovation Solution
The display panel design includes a substrate with distinct display areas, where a second pixel circuit is arranged outside the second display area and connected via connection wiring with varying widths, and an organic insulating layer fills the groove, ensuring high light transmittance and efficient image display even with components integrated into the display region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If electronic components are integrated into the display region to extend display area, then display area is increased, but light transmittance and resolution are reduced
Solution Approach 1:
The display panel is divided into a first display area with high-resolution display elements and a second display area with integrated electronic components. This segmentation allows each region to serve its specific function optimally while collectively extending the total display area without compromising the light transmittance and resolution of the primary display region.
Solution Approach 2:
Different regions of the display panel are assigned different functional qualities: the first display area is optimized for high-resolution image display with superior light transmittance, while the second display area is designed for component integration. This local differentiation resolves the contradiction by allowing display area extension in non-critical regions while preserving quality in critical regions.
2Reliability
If connection wiring with varying widths is used to connect pixel circuits outside display area, then voltage drop is reduced, but manufacturing complexity increases
Solution Approach 1:
The connection wiring is designed with varying widths tailored to specific locations: wider sections are positioned where current demand is higher to reduce voltage drop, while narrower sections are used where less current is required. This localized optimization of wiring dimensions improves electrical performance without requiring complete redesign of the entire wiring system.
Solution Approach 2:
The connection wiring transitions from a static uniform structure to a dynamic variable-width structure that adapts to the electrical demands of different regions. The wiring width is optimized at each location based on current requirements, allowing the system to maintain low voltage drop while remaining manufacturable through standardized fabrication processes.
3Illumination intensity
If second pixel circuit is arranged outside second display area, then light transmittance is improved, but device complexity increases
Solution Approach 1:
The pixel circuits are segmented into two groups: first pixel circuits arranged within the first display area for direct control of display elements, and second pixel circuits arranged outside the second display area for control of the extended display region. This spatial segmentation of circuitry allows light to pass through the second display area without obstruction while maintaining functional control over all display elements.
Solution Approach 2:
The second pixel circuits are positioned in a different spatial location (outside the second display area) rather than within it, utilizing the lateral dimension of the substrate. This dimensional relocation resolves the conflict between light transmittance and circuit functionality by separating the optical path from the circuit control region.
Data Source
AI summary
A display panel includes a substrate including a first display area, a second display area, a first display element in the first display area, and a second display element in the second display area; a first pixel circuit in the first display area and electrically connected to the first display element; a second pixel circuit arranged outside the second display area and electrically connected to the second display element; an inorganic insulating layer arranged over the substrate and including a groove corresponding to the second display area; and a connection wiring arranged inside the groove and electrically connecting the second display element to the second pixel circuit, wherein the connection wiring and at least one of conductive layers of the second pixel circuit include a same material, and the connection wiring includes portions having different widths depending on a position of the connect wiring arranged in the second display area.