Light-Emitting Module Spacer Layout for Higher Luminance
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Solution Overview
Problem
Existing light-emitting modules face challenges in enhancing luminance and protecting light-emitting elements from external factors such as dust and stray light reflections.
Innovation Solution
A light-emitting module design featuring a first and second light-transmissive layer separated by an air layer, with a spacer ensuring the layers do not overlap with the light-emitting elements, enhancing luminance and protecting against dust and stray light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a spacer is disposed above the light-emitting elements to protect them from dust and stray light, then protection is improved, but light transmission is blocked and luminance deteriorates
Solution Approach 1:
A light-transmissive layer is introduced as an intermediary component between the spacer and the light-emitting elements. This layer allows light to pass through while the spacer continues to provide protection from dust and stray light, thus resolving the contradiction between protection and light transmission.
Solution Approach 2:
The spacer is positioned in a different spatial dimension (above the light-transmissive layer rather than directly above the light-emitting elements). This dimensional arrangement allows the spacer to provide protection without directly blocking the light path from the light-emitting elements.
2Illumination intensity
If light-transmissive layers are stacked to improve light extraction, then luminance is improved, but device complexity increases
Solution Approach 1:
The light-transmissive layer is segmented into multiple functional regions: a first light-transmissive layer covering the light-emitting elements and a second light-transmissive layer covering the spacer. This segmentation allows each layer to serve specific functions while maintaining overall simplicity.
Solution Approach 2:
The light-transmissive layers serve multiple functions simultaneously: they extract light from the light-emitting elements, provide structural support, and allow the spacer to perform its protective function. This multi-functionality reduces the need for additional separate components.
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
Improves luminance by condensing light effectively and reduces stray light reflections, while protecting the elements from external interference.
Implementation Method 1
An air layer is present between the first light-transmissive layer and the second light-transmissive layer
Data Source
AI summary
A light-emitting module includes a first wiring board, a plurality of light-emitting elements disposed on or above the first wiring board, a first light-transmissive layer covering the plurality of light-emitting elements, a spacer disposed on or above the first light-transmissive layer, and a second light-transmissive layer disposed on or above the spacer. An air layer is present between the first light-transmissive layer and the second light-transmissive layer. The spacer does not overlap with at least one of the plurality of light-emitting elements in a plan view.