Mini-LED Package Assembly for Repairable High-Extraction Panels
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Solution Overview
Problem
Mini-LED light-emitting panels face challenges in inspecting and repairing light-emitting elements after packaging, as conventional methods do not allow for this while maintaining a high light-extraction rate.
Innovation Solution
A light-emitting panel design featuring a substrate with a light-emitting element and a package assembly comprising a light-transmitting substrate and a light-shielding layer, where the light-shielding layer forms accommodation spaces for the light-emitting elements, enabling direct inspection and repair and optimizing light extraction by reducing the thickness of the light-shielding layer on the emitting surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a conventional package assembly is used to package the light-emitting panel, then the light-emitting elements are protected and packaged, but the light-emitting elements cannot be inspected and repaired while maintaining a high light-extraction rate
Solution Approach 1:
The package assembly is segmented into multiple light-transmitting substrates (first light-transmitting substrate and second light-transmitting substrate) with a light-shielding layer in between. This segmentation creates accommodation spaces that allow access to light-emitting elements for inspection and repair while maintaining light extraction functionality through the transparent substrates.
Solution Approach 2:
The light-shielding layer acts as an intermediary component that selectively blocks light in certain areas while allowing light transmission in other areas. It creates defined accommodation spaces for light-emitting elements, enabling both protection and accessibility for maintenance purposes.
2Object-affected harmful factors
If the light-shielding layer is made thicker to improve light shielding effectiveness, then light shielding performance is improved, but light extraction rate decreases
Solution Approach 1:
The light-shielding layer is designed with spatially varying properties: it is positioned specifically between the first and second light-transmitting substrates in accommodation spaces, providing local light shielding where needed while allowing light transmission through the transparent substrates in other areas. This localized approach maintains both shielding effectiveness and light extraction rate.
3Ease of repair
If the package assembly is made more accessible for repair, then ease of repair is improved, but structural integrity and protection may be compromised
Solution Approach 1:
The package assembly employs a nested structure where the light-shielding layer is positioned between two light-transmitting substrates, creating accommodation spaces that house the light-emitting elements. This nested configuration provides structural integrity through multiple layers while maintaining accessibility to the light-emitting elements for repair purposes.
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
Facilitates the inspection and repair of light-emitting elements within the packaged panel while enhancing the light-extraction rate by strategically positioning the light-shielding layer to allow more light to pass through, ensuring continued panel functionality.
Implementation Method 1
a light-transmitting substrate and a light-shielding layer stacked on each other... a light emitted by the light-emitting element pass through the package assembly
Implementation Method 2
the light-shielding layer is located between the light-transmitting substrate and the substrate and comprises a plurality of light-shielding portions arranged at intervals
Data Source
AI summary
A light-emitting panel includes a substrate, a light-emitting element, and a package assembly. The package assembly includes a light-transmitting substrate and a light-shielding layer. The light-shielding layer includes a plurality of light-shielding portions arranged at intervals. The light-shielding portions are connected to the light-transmitting substrate. Two adjacent light-shielding portions and the light-transmitting substrate form an accommodation space. The light-emitting element is located in the accommodating space. A light emitted by the light-emitting element pass through the package assembly.