Mesa Contact Layout for High-Density Light-Emitting Semiconductor Components
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional semiconductor components for emitting laser light face challenges in achieving a high fill factor for electrical contacts, which limits the density and efficiency of mesa units and emission regions.
Innovation Solution
The semiconductor component features a main body with mesa units that have an active contact portion arranged only on one longitudinal side, allowing for a larger surface area coverage with electrical contacts and enabling a closer arrangement of mesa units without unwanted current flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the active contact portion completely surrounds the mesa unit along the surface, then the electrical contact coverage is maximized, but the distance between adjacent mesa units must be increased to prevent unwanted current flows
Solution Approach 1:
The active contact portion is arranged asymmetrically only on one longitudinal side of the mesa unit rather than completely surrounding it. This asymmetric configuration reduces the footprint of each mesa unit while maintaining sufficient electrical contact, allowing adjacent mesa units to be positioned closer together and increasing the overall density of emission regions on the semiconductor component surface.
Solution Approach 2:
The contact design transitions from a two-dimensional complete surround configuration to a one-sided linear arrangement. By concentrating the active contact portion on a single longitudinal side rather than distributing it around all sides, the design reduces the lateral space required per mesa unit, enabling higher density packing while still providing adequate electrical energy feed to the active layer.
2Productivity
If the active contact portion is reduced to one side of the mesa unit, then the fill factor improves and mesa units can be arranged closer, but the electrical contact area per mesa unit is reduced
Solution Approach 1:
The electrical contact design applies local quality by concentrating the active contact portion specifically on one longitudinal side of the mesa unit where it is most needed for electrical energy feed. This localized approach optimizes the balance between contact area and spatial efficiency, providing sufficient electrical properties while minimizing the footprint to enable higher density arrangements of mesa units across the semiconductor component surface.
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 design enhances the fill factor, allowing for a higher density of mesa units and emission regions, which improves the efficiency and reduces the distance between emission regions, while maintaining sufficient electrical properties.
Implementation Method 1
an active layer arranged between the first mirror portion and the second mirror portion for generating the light
Implementation Method 2
a first mirror portion, a second mirror portion, and an active layer arranged between the first mirror portion and the second mirror portion
Data Source
AI summary
A semiconductor component for emitting light includes a main body having at least one mesa unit. The mesa unit has at least one mesa portion with an emission region arranged on a surface of the main body. The emission region includes a first mirror portion, a second mirror portion, and an active layer arranged between the first mirror portion and the second mirror portion for generating the light. The semiconductor component further includes at least one contact unit for feeding electrical energy into the active layer. The contact unit has a joining portion for externally contacting the semiconductor component, and an active contact portion extending from the joining portion to the mesa portion. The active contact portion is arranged only on one longitudinal side of the mesa unit, so that the mesa unit is not completely surrounded by the active contact portion along the surface.