Organic Light Emitting Display Partitioning Open Holes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Organic light emitting display devices face challenges in blocking moisture and oxygen introduction and crack propagation through open holes, leading to degradation and reliability issues.
Innovation Solution
A partition is formed along the circumference of open holes in the substrate to block the introduction of moisture and oxygen and prevent crack propagation, using a stacked layer structure with organic layers and inorganic films to separate vulnerable areas from the open hole region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If open holes are introduced into the substrate for design flexibility or weight reduction, then adaptability or versatility is improved, but reliability deteriorates due to moisture and oxygen introduction and crack propagation
Solution Approach 1:
The patent divides the continuous organic layer into separate regions by introducing partitions along the circumference of open holes. This segmentation prevents moisture, oxygen, and cracks from propagating across the entire device, isolating the harmful effects to localized areas around the open holes while maintaining design flexibility.
Solution Approach 2:
The partition structure acts as an intermediary element between the open hole and the organic layer. It provides a protective barrier that blocks the direct path of moisture and oxygen ingress and crack propagation, allowing the open hole to maintain its functional benefits while preventing reliability degradation.
2Reliability
If partitions are added around open holes to block moisture and oxygen, then reliability is improved, but device complexity increases
Solution Approach 1:
The partition structure is applied locally only around the open holes where moisture and oxygen ingress is a concern, rather than throughout the entire device. This localized approach provides necessary protection while minimizing the increase in overall device complexity and maintaining manufacturing efficiency.
3Ease of manufacture
If the organic layer extends to the open hole region for manufacturing simplicity, then ease of manufacture is improved, but reliability deteriorates due to increased exposure to moisture and oxygen
Solution Approach 1:
By segmenting the organic layer with partitions around open holes, the patent allows the layer to extend toward the open hole region during manufacturing while creating isolated protected zones. This maintains manufacturing simplicity without compromising reliability, as the partitions prevent harmful substance propagation.
Solution Approach 2:
The partition serves as an intermediary structure that enables the organic layer to extend closer to open holes during manufacturing while still providing protection. It mediates between the conflicting requirements of manufacturing ease and reliability by allowing extended coverage with localized protection.
Data Source
AI summary
Discussed is an organic light emitting display device including a substrate having a display area in which a plurality of plurality pixels are disposed, a non-display area outside of the display area, and at least one open hole area defined between the plurality of pixels, and a stacked layer structure disposed on the substrate and defining the plurality of pixels in the display area, the stacked layer structure including at least one organic layer, wherein the at least one open hole area includes at least one open hole penetrating through the substrate and at least one partition disposed along a circumference of the at least one open hole between the at least one open hole and the plurality of pixels adjacent thereto to separate the at least one organic layer from a corresponding layer that extends to the at least one open hole.