Series-Connected LED Regions for Brightness Control
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Solution Overview
Problem
Current light emitting devices face challenges in achieving high luminance and efficient light extraction, as well as controlling light emission with various brightness levels, which are essential for competitive LED technologies.
Innovation Solution
The light emitting device is structured with multiple light emitting regions connected in series through connection electrodes and intermediate pads, allowing for the control of light emission brightness and increasing the light emitting area by optimizing electrode placement and insulation layers to enhance light extraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light emitting regions are connected in series through connection electrodes, then light emission brightness can be controlled at various levels, but device structure becomes more complex
Solution Approach 1:
The light emitting device is divided into multiple independent light emitting regions (first, second, third light emitting regions) that can be controlled separately. Each region contains its own light emitting diode structure with anode and cathode, allowing independent electrical connection and control. This segmentation enables versatile brightness control by selectively activating different regions while maintaining a manageable device structure.
Solution Approach 2:
The device incorporates dynamic control capability through multiple intermediate electrodes (first intermediate electrode, second intermediate electrode, third intermediate electrode) that can be independently connected to power supply terminals. This allows the brightness and activation state of different light emitting regions to be dynamically adjusted, enabling various brightness levels and operational modes without fixing the device to a single configuration.
2Area of stationary object
If multiple light emitting regions are connected in series, then light emitting area increases, but manufacturing precision requirements increase
Solution Approach 1:
The light emitting device is divided into multiple independent light emitting regions (first, second, third light emitting regions) that can be controlled separately. Each region contains its own light emitting diode structure with anode and cathode, allowing independent electrical connection and control. This segmentation enables versatile brightness control by selectively activating different regions while maintaining a manageable device structure.
Solution Approach 2:
The device incorporates dynamic control capability through multiple intermediate electrodes (first intermediate electrode, second intermediate electrode, third intermediate electrode) that can be independently connected to power supply terminals. This allows the brightness and activation state of different light emitting regions to be dynamically adjusted, enabling various brightness levels and operational modes without fixing the device to a single configuration.
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 enables the control of light emission with various brightness levels and improves light emission efficiency by dispersing current and increasing the light emitting area, addressing the limitations of existing devices.
Implementation Method 1
a light emitting structure divided into a plurality of light emitting regions including a first semiconductor layer, an active layer and a second semiconductor layer
Data Source
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AI summary
Disclosed is a light emitting device including a light emitting structure including a plurality of light emitting regions including a first semiconductor layer, an active layer and a second semiconductor layer, and a plurality of boundary regions disposed between the light emitting regions, a first electrode unit disposed on the first semiconductor layer in one of the light emitting regions, a second electrode unit disposed on the second semiconductor layer in another of the light emitting regions, at least one connection electrode to electrically connect the first semiconductor layer of one of adjacent light emitting regions to the second semiconductor layer of the other thereof, and an intermediate pad disposed on the first semiconductor layer or the second semiconductor layer in at least one of the light emitting regions, wherein the light emitting regions are connected in series through the connection electrode.