LED Protective Element Layout for Compact Light-Emitting Packages
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Solution Overview
Problem
Existing light-emitting devices are large in size due to inefficient packaging and layout of components.
Innovation Solution
A compact design is achieved by arranging light-emitting elements and protective elements on a submount such that protective elements are disposed between adjacent light-emitting elements, optimizing the use of mounting surface space and reducing the overall size of the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective elements are arranged around each light-emitting element individually, then each light-emitting element is well protected, but the device size increases
Solution Approach 1:
Adjacent protective elements are merged into a single integrated structure that protects multiple light-emitting elements simultaneously. The protective element includes a first protective region for a first light-emitting element and a second protective region for a second light-emitting element, reducing the total number of separate protective components and optimizing space utilization on the mounting surface.
2Reliability
If more protective elements are added to protect each light-emitting element, then reliability improves, but device complexity increases
Solution Approach 1:
Multiple protective functions are combined into a single protective element structure that serves multiple light-emitting elements. This reduces the total count of discrete protective components while maintaining comprehensive protection coverage across all light-emitting elements on the mounting surface.
Data Source
AI summary
A light-emitting device includes a mounting member, first to third light-emitting elements mounted on a mounting surface, and first to third protective elements mounted on the mounting surface and respectively electrically connected to the first to third light-emitting elements. In a plan view viewed along a normal direction of the mounting surface, at least a part of the first protective element is disposed between the first light-emitting element and the second light-emitting element, at least a part of the second protective element and at least a part of the third protective element are disposed between the second light-emitting element and the third light-emitting element, and the second light-emitting element is disposed between the first light-emitting element and the third light-emitting element.