Optoelectronic Semiconductor Chip Embedded in Shaped Body

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Solution Overview

Problem

Existing optoelectronic semiconductor components lack mechanical stability for efficient lateral emission or absorption of radiation, and existing production methods do not adequately support this stability.

Innovation Solution

A mechanically stable optoelectronic semiconductor component is created using a semiconductor chip embedded in a shaped body formed from a molding compound with a filler, which covers the chip's lateral and rear surfaces, and includes contact layers for electrical connection, allowing for lateral radiation emission or absorption. The method involves embedding the chip in a molding compound with a projecting portion for support and applying metallizations for contact layers, enabling secure mounting and electrical connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the semiconductor chip is mounted for lateral emission, then radiation emission efficiency is improved, but mechanical stability deteriorates

Engineering Contradiction:
Improveradiation emission efficiencyVSAvoidmechanical stability
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

The patent uses a composite molding compound consisting of a plastic matrix material combined with inorganic filler particles (such as aluminum oxide, boron nitride, or silicon dioxide). This composite structure provides both the mechanical strength needed for stability and the thermal conductivity necessary for efficient lateral radiation emission. The filler particles form a rigid network within the plastic matrix, creating a mechanically stable yet thermally efficient support structure.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent modifies the physical and chemical parameters of the molding compound by adjusting the filler content (50-95 wt%), selecting specific filler particle sizes and shapes, and choosing appropriate plastic matrix materials with different thermal and mechanical properties. These parameter changes enable optimization of both mechanical stability and thermal radiation performance to achieve lateral emission efficiency.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If a molding compound with filler is used to embed the chip, then mechanical stability is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvemechanical stabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into the single molding compound material: structural support, thermal management, electrical insulation, and mechanical protection of the semiconductor chip. By integrating these functions into one composite material rather than using separate components, the design reduces assembly steps and manufacturing complexity while achieving high mechanical stability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a homogeneous distribution of filler particles throughout the plastic matrix material, ensuring uniform mechanical and thermal properties throughout the molding compound. This homogeneity simplifies manufacturing by eliminating the need for layered structures or complex multi-material assemblies, while still providing the required mechanical stability.

Inventive Principle:
Principle #33Homogeneity

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 solution provides a mechanically stable optoelectronic semiconductor component suitable for lateral radiation emission or absorption, enhancing stability and facilitating efficient electrical connection, making it suitable for applications like flat backlighting arrays in displays.

Implementation Method 1

the shaped body forms a support for the optoelectronic semiconductor chip. The shaped body accordingly contributes to the mechanical stability of the optoelectronic semiconductor component

Methodology Applied
Scientific EffectMechanical support:

Implementation Method 2

a large part of the radiation that, for example, is generated in operation by the optoelectronic semiconductor chip passes through it

Methodology Applied
Scientific EffectRadiation transmission:

Implementation Method 3

The optoelectronic semiconductor component may comprise a first contact layer and a second contact layer which are arranged on the shaped body and are provided for electrical connection of the semiconductor chip

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS9780269B2Optoelectronic semiconductor component comprising an optoelectronic semiconductor chip being partly embedded in a shaped body serving as support and method for producing an optoelectronic semiconductor component comprising an optoelectronic semiconductor chip being partly embedded in a shaped body serving as support
Publication Date: 2017.10.03 OSRAM OLED
  • US9780269B2 patent drawing
  • US9780269B2 patent drawing
  • US9780269B2 patent drawing

AI summary

An optoelectronic semiconductor component includes an optoelectronic semiconductor that is partly embedded into a shaped body, which is formed from a molding compound that at least partly covers at least two lateral faces and the rear surface of the optoelectronic semiconductor chip. A first contact layer and a second contact layer are arranged on the shaped body and are electrically connected to the optoelectronic semiconductor chip. A mounting face is arranged transversely in relation to the radiation passage face and is provided for mounting the optoelectronic semiconductor component.