Light-Emitting Element Filter Layer Sealing and Light Shielding
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Solution Overview
Problem
Existing light-emitting devices face challenges in maintaining sufficient sealing performance while preventing moisture and external air infiltration, and in reducing reflection of external light from peripheral wiring, which complicates the manufacturing process.
Innovation Solution
Incorporating a filter layer with color filters and layers that overlap the light-emitting element and peripheral wiring, formed from colored layers transmitting specific wavelengths, to enhance sealing and light-shielding performance without increasing manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate blocking element is formed at the boundary between the sealing layer and substrate, then moisture infiltration is prevented, but manufacturing process complexity increases
Solution Approach 1:
The patent combines the sealing layer and the blocking function into a single integrated structure. The sealing layer is designed to extend along the side end surface of the light-emitting element and directly block the boundary between the light-emitting element and substrate, eliminating the need for a separate blocking element. This merging approach maintains reliable sealing performance while simplifying the manufacturing process by reducing the number of discrete components and assembly steps.
2Object-affected harmful factors
If a light-shielding member is formed to overlap the peripheral wiring, then light reflection is reduced, but manufacturing process complexity increases
Solution Approach 1:
The patent integrates the light-shielding function into the existing filter layer structure. The filter layer is designed to overlap both the light-emitting element and the peripheral wiring, combining the color filtering function with the light-shielding function in a single layer. This approach reduces light reflection from the peripheral wiring while maintaining the manufacturing simplicity of the original filter layer formation process, avoiding the need for an additional light-shielding member.
3Reliability
If the filter layer is designed to overlap both the light-emitting element and peripheral wiring, then both sealing and light-shielding performance are improved, but manufacturing complexity increases
Solution Approach 1:
The patent designs the filter layer to serve multiple functions simultaneously. The same filter layer that provides color filtering for the light-emitting element is extended to overlap the peripheral wiring, thereby providing light-shielding functionality. This multi-functional design allows the filter layer to improve both sealing performance (by extending along the side end surface) and light-shielding performance (by overlapping the peripheral wiring) without requiring additional manufacturing processes, as it utilizes the existing filter layer formation steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively secures better sealing and reduces light reflection, simplifying the manufacturing process by collectively forming the filter layers and color filters during a common process, thereby enhancing the light-emitting device's performance and reliability.
Implementation Method 1
a first color filter which overlaps the light-emitting element and a first layer which overlaps the peripheral wiring, wherein the first color filter and the first layer are formed from a first colored layer that transmits light having a first wavelength
Data Source
AI summary
A light-emitting device includes a light-emitting element disposed in a display region and including a first electrode, a second electrode, and a light-emitting functional layer. The light-emitting device includes a wiring formed in a periphery of the display region and that is electrically connected to the second electrode, and a filter layer having a first color filter that overlaps the light-emitting element and a first layer that overlaps the peripheral wiring. The first color filter and the first layer are formed from a first colored layer that transmits light having a first wavelength.