Optoelectronic Component with Dielectric Filter and Reflective Sides

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Solution Overview

Problem

Monolithic displays face challenges with redundancy in the event of optoelectronic component failure, radiation pattern control, and maintaining high pixel density and contrast due to defects and variations in manufacturing processes, which are difficult to repair and result in economic and procedural inefficiencies.

Innovation Solution

The integration of a dielectric filter with additional reflecting sides in optoelectronic components, comprising semiconductor elements, dielectric filters, and reflective materials, which enhance radiation directionality and efficiency, and the use of redundant semiconductor elements and subpixel structures to compensate for defects, ensuring high contrast and pixel density.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a dielectric filter with additional reflecting sides is applied to improve radiation characteristics, then radiation directionality is improved, but device complexity increases

Engineering Contradiction:

Improveradiation directionalityVSAvoiddevice complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into a single dielectric filter component: the filter simultaneously performs wavelength selection and radiation directionality control through its integrated reflecting sides. This merging approach improves radiation characteristics while avoiding the need for separate components, thus limiting the increase in device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The dielectric filter is designed as a multi-functional element that both filters specific wavelengths and directs radiation through its reflecting sides. This universal component performs multiple tasks that would otherwise require separate elements, resolving the contradiction between improved radiation directionality and increased device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If redundant semiconductor elements are used to compensate for defects, then reliability is improved, but device complexity increases

Engineering Contradiction:

ImprovereliabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements redundancy by providing alternative optoelectronic components that can compensate for failures before they occur. The drive electronics are designed to detect and bypass defective components, ensuring continuous operation. This beforehand cushioning approach improves reliability while maintaining manageable device complexity through systematic design.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The drive electronics incorporate feedback mechanisms to monitor the status of optoelectronic components and dynamically adjust operation to compensate for defects. This feedback system enables real-time reliability management without requiring complex manual intervention, resolving the contradiction between improved reliability and increased device complexity.

Inventive Principle:

Principle #23Feedback

3Area of stationary object

If monolithic integration is used to reduce size, then area is reduced, but ease of repair worsens

Engineering Contradiction:

ImproveareaVSAvoidease of repair

Core Design Contradiction:

Area of stationary objectVSEase of repair

Solution Approach 1:

The patent divides the monolithic substrate into individually addressable optoelectronic components with separate drive electronics. This segmentation allows selective operation and compensation of defective components without requiring replacement of the entire monolithic structure, thus maintaining small area while improving ease of repair through component-level accessibility.

Inventive Principle:

Principle #1Segmentation

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 improves radiation characteristics, enhances pixel density, and maintains display quality by providing redundancy and efficient defect compensation, reducing optical crosstalk and increasing the reliability of monolithic displays.

Implementation Method 1

The dielectric filter is disposed above the first major surface of the at least one semiconductor element, and is configured to transmit or pass only light entering the dielectric filter in pre-planar directions

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Implementation Method 2

a reflective material is deposited on at least one side surface of the at least one semiconductor element and on at least one side surface of the dielectric filter

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 3

The at least one semiconductor element includes an active region configured to generate light

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS20220223771A1Optoelectronic component, pixels, display assembly, and method

Publication Date: 2022.07.14 OSRAM OPTO SEMICON GMBH & CO OHG

AI summary

An optoelectronic component comprising at least one semiconductor element having an active region adapted to generate light is proposed. the device comprises a dielectric filter disposed above a first major surface of the at least one semiconductor element and adapted to transmit light only in pre-planar directions, and a reflective material disposed on at least one side surface of the at least one semiconductor element and on at least one side surface of the dielectric filter.