Luminescence Diode Chip with Segmented Emission Regions
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Solution Overview
Problem
Existing optoelectronic headlights lack the ability to precisely achieve diverse emission characteristics, limiting their application in various lighting scenarios such as motor vehicle headlights and projection systems, due to the fixed shape and orientation of luminescence diode chips.
Innovation Solution
The design incorporates luminescence diode chips with multiple spatial emission regions of different shapes, sizes, and orientations, which can be independently driven, allowing for the creation of asymmetrical emission patterns and enabling the production of optoelectronic headlights with customizable emission characteristics through a conductor track structure on an insulation layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If luminescence diode chips with fixed shape and orientation are used, then the device structure is simple, but the ability to achieve diverse emission characteristics is limited
Solution Approach 1:
The luminescence diode chip is divided into multiple spatial emission regions (first emission region, second emission region, third emission region) with different shapes, sizes, and orientations. Each region can emit light independently, allowing diverse emission patterns to be achieved by activating different regions or combinations thereof, thus providing adaptability without requiring multiple separate chips.
Solution Approach 2:
Different emission regions on the chip are designed with distinct local properties: the first emission region has a first shape and orientation, the second emission region has a second shape and orientation, and the third emission region has a third shape and orientation. This local differentiation enables each region to contribute to specific emission characteristics, achieving versatility through localized functional variation.
2Adaptability or versatility
If multiple luminescence diode chips are used to achieve diverse emission patterns, then the emission characteristics can be customized, but the device complexity and manufacturing cost increase
Solution Approach 1:
Multiple emission regions that would traditionally require separate luminescence diode chips are merged into a single chip structure. The chip includes a first emission region, second emission region, and third emission region all integrated on one substrate, allowing diverse emission patterns to be achieved while simplifying manufacturing and reducing component count.
Solution Approach 2:
The single luminescence diode chip is designed to perform multiple functions by incorporating different emission regions with varying shapes, sizes, and orientations. This multi-functional chip can produce various emission patterns (asymmetrical, directional, omnidirectional) that would otherwise require multiple specialized chips, thereby simplifying the production process.
3Manufacturing precision
If emission regions are laterally spaced apart and have different shapes, then precise emission control is achieved, but the chip area increases
Solution Approach 1:
The emission regions are arranged in different spatial dimensions and orientations on the chip. The first emission region, second emission region, and third emission region are positioned at different locations with different orientations, allowing precise emission control through spatial and angular differentiation while optimizing the use of chip area through three-dimensional spatial arrangement.
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 approach allows for the realization of diverse emission characteristics, enabling the production of headlights with precise control over light distribution, including asymmetrical patterns, and simplifies the mounting and interconnection of components, reducing costs and improving optical element placement.
Implementation Method 1
an optoelectronic headlight comprising at least one luminescence diode chip (1) which emits electromagnetic radiation
Implementation Method 2
luminescence diode chip having at least two spatial emission regions or which has at least two luminescence diode chips each having at least one spatial emission region
Data Source
AI summary
An optoelectronic headlight which emits electromagnetic radiation is specified, which has a luminescence diode chip with at least two spatial emission regions or which has at least two luminescence diode chips each having at least one spatial emission region. The headlight is suitable in particular for a front headlight for motor vehicles. The emission regions, in a plan view of a main extension plane associated with them, are shaped differently, are of different sizes and/or are not shaped rectangularly and are differently oriented. Particularly preferably, the emission regions can be driven independently of one another. Methods for production of an optoelectronic headlight and a luminescence diode chip are furthermore specified.