Optoelectronic Apparatus Contact Structure Spacing
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Solution Overview
Problem
Existing optoelectronic apparatuses face radiation loss issues due to inefficient radiation coupling and absorption at contact structures, which hinder their performance in detector systems and energy-generating applications like solar cells and projectors.
Innovation Solution
An optoelectronic apparatus with a radiation-emitting or radiation-receiving semiconductor chip and a contact structure that is vertically spaced apart from an optical structure, allowing for reduced radiation absorption and increased coupling efficiency by arranging contact elements between optical elements, thereby minimizing shading and optimizing radiation concentration or collimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If contact elements are placed close to the optical structure for compact design, then device complexity is reduced, but radiation absorption increases and coupling efficiency decreases
Solution Approach 1:
The contact elements are arranged in the lateral dimension (in interspaces between optical elements when projected onto the optical structure plane) rather than being positioned vertically close to the optical structure. This spatial reconfiguration in another dimension allows electrical contact while minimizing radiation absorption, resolving the contradiction between compact design and energy loss.
2Reliability
If contact elements are positioned to cover the radiation passage area for electrical contact, then electrical connectivity is improved, but radiation coupling-out efficiency decreases due to shading
Solution Approach 1:
The contact elements are selectively positioned only in the interspaces between optical elements when projected onto the optical structure plane. This local arrangement ensures electrical connectivity is maintained in regions where it is needed while leaving the radiation passage areas uncovered, thus preventing shading and maintaining high radiation coupling-out efficiency.
3Manufacturing precision
If contact structure is integrated closely with optical structure, then manufacturing precision is improved, but radiation losses increase
Solution Approach 1:
The contact structure is integrated with the optical structure in the lateral dimension (planar projection) rather than vertically, allowing precise alignment for manufacturing while maintaining sufficient vertical spacing to minimize radiation absorption. This resolves the contradiction between manufacturing precision and energy loss.
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 significantly reduces radiation losses and enhances the uniformity of luminous areas, improving the efficiency of radiation collection and emission in optoelectronic devices, particularly suitable for applications in solar cells and projectors.
Implementation Method 1
an optical device with an optical structure including a plurality of optical elements
Implementation Method 2
optimizing radiation concentration or collimation
Implementation Method 3
reduced radiation absorption by arranging contact elements between optical elements
Data Source
AI summary
An optoelectronic apparatus includes an optical device with an optical structure including a plurality of optical elements, and a radiation-emitting or radiation-receiving semiconductor chip with a contact structure which includes a plurality of contact elements that make electrical contact with the semiconductor chip and are spaced apart vertically from the optical structure, wherein the contact elements are arranged in interspaces between the optical elements upon a projection of the contact structure into the plane of the optical structure.