Light Emitting Device Support Column Member Light Collection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Light emitting devices require improved light collecting properties to enhance their efficiency and performance.

Innovation Solution

A method of manufacturing a light emitting device involves providing a wiring substrate with a light emitting element and a frame body, forming a support column member in contact with the frame body, and creating a light-transmissive member that partially contacts both the frame body and the support column member, with the support column member acting as a framework to stabilize the light-transmissive member's shape and improve light collection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a light-transmissive member is formed to cover the light emitting element, then light extraction efficiency is improved, but lateral spread of the light-transmissive member occurs reducing light collecting property

Engineering Contradiction:

Improvelight extraction efficiencyVSAvoidlateral spread

Core Design Contradiction:

Illumination intensityVSShape

Solution Approach 1:

The support structure is divided into a frame body and multiple support column members positioned at different locations. This segmentation allows the light-transmissive member to be supported at multiple discrete points, preventing lateral spread while maintaining the necessary shape for light collection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Support column members are introduced as intermediary elements between the frame body and the light-transmissive member. These column members provide the necessary support to prevent lateral spread of the light-transmissive member while allowing it to maintain its light-extraction function.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Shape

If a concave or convex dam is disposed to prevent lateral spread, then lateral spread is reduced, but light collecting property is not sufficiently improved

Engineering Contradiction:

Improvelateral spread controlVSAvoidlight collecting property

Core Design Contradiction:

ShapeVSIllumination intensity

Solution Approach 1:

Instead of using a continuous dam structure in the horizontal plane, the invention transitions to a vertical support structure with column members. This dimensional change allows light to be collected and directed upward through the support columns, improving light collecting property while still controlling lateral spread.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Support column members are strategically positioned at specific locations rather than forming a continuous barrier. This local support approach allows light to pass through the spaces between columns while still preventing lateral spread of the light-transmissive member, thereby improving light collecting property.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11552227B2Method of manufacturing light emitting device, and light emitting device

Publication Date: 2023.01.10 NICHIA CORP

AI summary

A method of manufacturing a light emitting device includes: providing a wiring substrate on which a light emitting element and a frame body surrounding the light emitting element are disposed; forming a support column member in contact with at least one of an inner peripheral surface and a top surface of a corresponding portion of the frame body, an outermost edge of the support column member being positioned at a same position or inwardly of an outermost edge of the frame body in a top plan view; and forming a light-transmissive member at least partially in contact with the frame body and the support column member with at least a part of the light-transmissive member being positioned above the frame body and the support column member.