OLED Encapsulating Layer Support Structure to Prevent Newton's Rings
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Solution Overview
Problem
OLED light-emitting devices face issues such as scratching and light diffraction due to insufficient or non-uniform support during encapsulation, leading to light-emitting failures and adverse effects like Newton's rings, which affect display or lighting performance.
Innovation Solution
A light-emitting substrate design featuring a base substrate with light-emitting and non-light-emitting regions, supported by an array of support structures distributed between and within these regions, including first and second support portions arranged in specific shapes and orientations to stabilize the encapsulating layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the encapsulation material is applied without sufficient or non-uniform support for the light-emitting region, then the manufacturing process is simpler, but the light-emitting unit may suffer scratching causing light-emitting failure
Solution Approach 1:
The support structure is segmented into multiple protruding portions distributed across the substrate, each providing localized support in specific regions. This segmentation allows the encapsulation material to be applied uniformly without requiring complex overall support structures, maintaining manufacturing simplicity while ensuring light-emitting unit protection
Solution Approach 2:
The support structure acts as an intermediary between the substrate and the encapsulation material. The protruding portions provide mechanical support to the encapsulation material during application, preventing direct contact between the encapsulation material and the light-emitting units, thus avoiding scratching while maintaining process simplicity
2Device complexity
If the encapsulation material is applied without uniform support, then the device structure is less complex, but light diffraction and Newton's rings may occur due to deformation
Solution Approach 1:
The support structure implements local quality by providing targeted support only in specific regions where needed (light-emitting regions and their surrounding areas) rather than uniform support across the entire substrate. The protruding portions are strategically positioned to prevent deformation in critical areas, eliminating light diffraction and Newton's rings without requiring complex overall structural modifications
Solution Approach 2:
The support structure applies partial action by providing support only in specific localized regions rather than uniformly across the entire encapsulation area. The protruding portions are positioned to provide sufficient support in light-emitting regions to prevent deformation and optical defects, achieving the desired effect without excessive structural complexity
Data Source
AI summary
The present disclosure provides a light-emitting substrate, a light-emitting apparatus and a lighting apparatus. The light-emitting substrate includes: a base substrate including a plurality of light-emitting regions and a plurality of non-light-emitting regions, where the plurality of light-emitting regions are arranged in an array; a plurality of light-emitting units located in the plurality of light-emitting regions, respectively, where in each light-emitting region, more than one light-emitting unit is arranged in an array; a covering layer covering the light-emitting region and the non-light-emitting region; and a plurality of support structures arranged in an array and evenly distributed in the plurality of non-light-emitting regions and/or between the plurality of light-emitting units, where the support structures are used to support the covering layer.