Display Panel Substrate Layout for High-Transmittance Transmission Areas
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Solution Overview
Problem
Current display panels face challenges in integrating various functions and components efficiently, particularly in thinner and lighter designs, where existing technologies struggle to optimize the arrangement and manufacturing of transmission areas for enhanced light transmittance and functionality.
Innovation Solution
A display panel design featuring a substrate with specific layers and structures, including a first and second area with sub-pixel circuits, light-emitting diodes, and conductive bus lines, along with a groove and concave portions, allowing for efficient light transmission and component arrangement, and a method for manufacturing this panel using indium gallium zinc oxide (IGZO) masks and organic insulating layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If display panels are made thinner and lighter to expand usage range, then portability and aesthetic appeal are improved, but structural stability and component integration capability deteriorate
Solution Approach 1:
The substrate employs a composite structure comprising multiple layers including a first substrate layer, a second substrate layer, a first inorganic insulating layer, and a second inorganic insulating layer. This multi-layer composite construction provides enhanced structural stability and mechanical strength while maintaining a thin overall profile, thus resolving the contradiction between lightweight design and structural stability.
Solution Approach 2:
The patent introduces vertical layering with multiple substrate layers stacked in the thickness direction, creating a three-dimensional structural solution. The first and second substrate layers are arranged vertically with insulating layers between them, providing structural reinforcement without increasing the horizontal footprint, thereby maintaining thinness while improving stability.
2Adaptability or versatility
If transmission areas are added to integrate various functions in the display area, then functional versatility is improved, but manufacturing complexity and process difficulty worsen
Solution Approach 1:
The display area is segmented into multiple functional zones including first transmission areas and second transmission areas with distinct structures. The first transmission areas have a first substrate layer with first holes, while the second transmission areas have a second substrate layer with second holes. This segmentation allows different functions to be integrated in different regions without requiring complete redesign of the entire structure, thus managing complexity while enhancing versatility.
Solution Approach 2:
Different regions of the substrate are designed with locally optimized structures: the first transmission areas feature a first hole structure with specific insulation layers, while the second transmission areas feature a second hole structure with different insulation layer configurations. This local quality approach enables tailored functional integration in different areas without uniformly increasing overall structural complexity.
3Illumination intensity
If multiple transmission areas with different structures are created for component arrangement, then light transmittance and functionality are improved, but manufacturing precision requirements worsen
Solution Approach 1:
Inorganic insulating layers serve as intermediary structures between the substrate layers and the holes. The first inorganic insulating layer is positioned between the first substrate layer and the first holes, while the second inorganic insulating layer is positioned between the second substrate layer and the second holes. These intermediary layers provide structural guidance and alignment references that facilitate precise hole formation and positioning, thereby improving manufacturing precision while maintaining high light transmittance through the transmission areas.
Data Source
AI summary
A display panel includes a substrate including first and second areas spaced apart from each other, and a first display area surrounding the first area and the second area, a plurality of first light-emitting diodes in the first display area and respectively electrically connected to a plurality of first sub-pixel circuits, a plurality of second light-emitting diodes in the first area, a plurality of second sub-pixel circuits respectively electrically connected to the plurality of second light-emitting diodes, and a groove surrounding the second area and having an undercut shape, wherein the substrate includes a first base layer, a first barrier layer, a second base layer, and a second barrier layer, and further includes a concave portion in a region between two adjacent second light-emitting and recessed into the second barrier layer and the second base layer, and a hole in the second area and penetrating through the substrate.