Shared-Electrode Light Emitter Layout for Larger Emission Area
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light-emitting devices struggle to maximize the effective light-emitting area, leading to reduced efficiency and performance in applications such as ranging devices and onboard systems.
Innovation Solution
A light-emitting device is designed with a unit structure comprising multiple units of emission, each including a first multilayer mirror, a second multilayer mirror, and an active layer. The device features a shared electrode configuration, where a first electrode is electrically connected between the first structures of different units, and a second electrode is connected between the second structures, optimizing the light-emitting area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a conventional light-emitting device structure is used with separate electrodes for each emission unit, then each unit can be individually controlled, but the effective light-emitting area is reduced due to electrode occupation
Solution Approach 1:
The patent merges the electrode structures by making the first electrode common to multiple units of emission. Instead of providing separate first electrodes for each unit, a single first electrode serves multiple units, reducing the total electrode area and maximizing the effective light-emitting area while maintaining individual controllability through separate second electrodes for each unit.
2Ease of operation
If more electrodes are provided for each unit of emission, then individual driving control is improved, but the light-emitting area is reduced due to increased electrode occupation
Solution Approach 1:
The first electrode is merged and shared among multiple units of emission, reducing electrode occupation area. Individual driving control is maintained through separate second electrodes for each unit, combining the benefits of area efficiency with operational control.
Solution Approach 2:
The first electrode serves a universal function across multiple units of emission, acting as a common electrical connection point. This multi-functional electrode design allows the same structure to support multiple emission units while minimizing the total number of electrodes required.
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 configuration maximizes the effective light-emitting area, enhances laser intensity, and allows for individual driving of units of emission, improving the performance of ranging devices and onboard systems by increasing the dynamic range for ranging applications.
Implementation Method 1
a first structure including a first multilayer mirror; a second structure including a second multilayer mirror
Implementation Method 2
a active layer disposed between the first structure and the second structure
Data Source
AI summary
For example, the effective light-emitting area of a light-emitting part is maximized as much as possible. A light-emitting device including a unit structure formed by a plurality of units of emission, wherein the unit of emission includes a first structure including a first multilayer mirror, a second structure including a second multilayer mirror, and an active layer disposed between the first structure and the second structure, the unit structure includes a first electrode electrically connected between the first structures of the different units of emissions and a second electrode electrically connected between the second structures of different units of emission, and the number of combination of the first electrode and the second electrode connected to the predetermined unit of emission in the predetermined unit structure is one.