Light Emitting Component Layout to Block Thyristor Stray Light

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Solution Overview

Problem

In light emitting components with multiple thyristors, stray light emitted from one thyristor can cause adjacent thyristors to turn on unintentionally, leading to uncontrolled light emission and difficulty in managing light output.

Innovation Solution

Incorporating light emitting elements that absorb light emitted from thyristors, preventing stray light from propagating to other thyristors, thereby maintaining controlled light emission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If light emitting elements are arranged in close proximity to increase integration density, then productivity and compactness are improved, but stray light from one thyristor can propagate to adjacent thyristors causing unintended activation

Engineering Contradiction:

Improveintegration densityVSAvoidcontrolled light emission

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

A light-absorbing layer is introduced as an intermediary substance between adjacent light emitting elements. This layer absorbs stray light emitted by one thyristor before it can reach and activate adjacent thyristors, thereby preventing unintended light emission while maintaining high integration density

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The harmful stray light is extracted or removed from the system by introducing a dedicated light-absorbing layer that captures and eliminates the propagating light, preventing it from causing unintended activation in adjacent elements

Inventive Principle:

Principle #2Taking out (Extraction)

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

This solution effectively suppresses unintended light emission in light emitting components, ensuring precise control over light output and preventing erroneous activation of thyristors.

Implementation Method 1

the light emitting elements absorb light emitted from a corresponding thyristor among the plurality of thyristors

Methodology Applied

Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentUS20240106193A1Light emitting component, semiconductor-laminated substrate, and measurement apparatus

Publication Date: 2024.03.28 FUJIFILM BUSINESS INNOVATION CORP

AI summary

A light emitting component includes: a substrate; a plural light emitting elements that are provided on the substrate and respectively have light emission regions; and a plural thyristors that are turned on to cause the light emission regions of the respective light emitting elements to emit light, or that increase amounts of emitted light of the light emission regions, in which the light emitting elements absorb light emitted from a corresponding thyristor among the plural thyristors.