Matrix LED Device with Partition Walls for Light Distribution

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Solution Overview

Problem

Existing light-emitting devices for vehicle lighting applications face challenges in adjusting brightness and light orientation efficiently to adapt to varying road conditions, and they often lack resistance to electrical and mechanical damage while maintaining high luminous efficiency.

Innovation Solution

A light-emitting device design featuring a support substrate with a light-emitting cell region, pad region, and edge region, including a matrix arrangement of unit light-emitting devices, partition walls, and fluorescent layers, optimized for resistance and adjustable light distribution, with a rectangular planar shape and a thickness less than a tenth of its length, and a light source module incorporating driver chips for precise control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If a light-emitting device uses a conventional design without partition walls and fluorescent layers, then the device structure is simpler, but the luminous efficiency is lower and light distribution cannot be finely adjusted

Engineering Contradiction:

Improveluminous efficiencyVSAvoiddevice structure

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The light-emitting device is divided into multiple unit light-emitting devices arranged in a matrix, with each unit having its own cell space defined by partition walls. This segmentation allows independent optimization of each unit's light emission characteristics, improving overall luminous efficiency while maintaining manageable structural complexity through modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Fluorescent layers are selectively applied in specific cell spaces corresponding to individual unit light-emitting devices, allowing local optimization of light conversion and emission characteristics. This enables fine adjustment of light distribution in different regions without requiring complete structural redesign

Inventive Principle:

Principle #3Local quality

2Reliability

If a light-emitting device lacks resistance to electrical and mechanical damage, then the device structure is simpler, but the reliability under varying road conditions is lower

Engineering Contradiction:

Improveresistance to electrical and mechanical damageVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The device structure incorporates partition walls and fluorescent layers in advance, creating a robust framework before operation. This preliminary structural preparation ensures resistance to electrical and mechanical damage from the outset, without requiring complex protective measures during operation

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The light-emitting device integrates multiple materials including semiconductor materials for light emission, fluorescent materials for wavelength conversion, and insulating materials for electrical protection. This composite structure provides inherent resistance to electrical and mechanical damage while maintaining functional simplicity

Inventive Principle:

Principle #40Composite materials

3Ease of operation

If additional focusing components are used to concentrate light, then the light orientation can be adjusted, but the device complexity increases and light loss occurs

Engineering Contradiction:

Improvelight orientation adjustmentVSAvoiddevice structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The fluorescent layers and partition walls work together to automatically concentrate and direct light emission from each unit light-emitting device. This self-service mechanism eliminates the need for additional focusing components like lenses or reflectors, maintaining simple device structure while achieving effective light concentration and orientation control

Inventive Principle:

Principle #25Self-service

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 design enhances resistance to electrical and mechanical damage, allows for fine adjustments in light distribution, and improves luminous efficiency by concentrating emitted light, reducing the need for additional focusing components and minimizing light loss.

Implementation Method 1

a plurality of fluorescent layers arranged on the plurality of unit light-emitting devices in the plurality of cell spaces

Methodology Applied

Scientific EffectFluorescence: Fluorescence

Data Source

PatentUS11695031B2Light-emitting device, light source module, and method of manufacturing light-emitting device

Publication Date: 2023.07.04 SAMSUNG ELECTRONICS CO LTD

AI summary

A light-emitting device is provided. The light emitting device includes a support substrate having a light-emitting cell region, a pad region and an edge region, the edge region surrounding the light-emitting cell region and the pad region; a plurality of unit light-emitting devices arranged in a matrix in the light-emitting cell region and spaced apart from each other; a plurality of pads formed in the pad region; partition walls arranged on the plurality of unit light-emitting devices, the partition walls defining a plurality of cell spaces respectively corresponding to the plurality of unit light-emitting devices; and a plurality of fluorescent layers arranged on the plurality of unit light-emitting devices in the plurality of cell spaces. The light-emitting device has a cuboid shape, in which a first length in a first direction is greater than a second length in a second direction.