Light Emitting Element With Control Electrode for Power Loss Reduction
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Solution Overview
Problem
Conventional light emitting diode (LED) driving units require transistors for on/off operation, resulting in significant power loss and increased circuit board area due to heavy power loss and transistor-related space requirements.
Innovation Solution
A light emitting element with a control electrode that reverses the path of electrons and holes supplied to an active layer, allowing for controlled light emission without a separate transistor, utilizing a substrate with first and second semiconductor layers and electrodes to manage energy levels and voltage supply for efficient light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a transistor is used for on/off operation of LED, then light emission control is achieved, but power loss increases and circuit board area increases
Solution Approach 1:
The patent extracts and eliminates the transistor component from the LED driving unit, replacing it with a direct control mechanism integrated into the LED structure itself. This removes the source of power loss associated with transistor operation while maintaining light emission control capability through alternative means.
Solution Approach 2:
The control function previously performed by a separate transistor is merged directly into the LED structure. The control electrode is integrated with the semiconductor layers, combining the light emission and control functions into a single unified structure, thereby eliminating the need for external transistor control and reducing power loss.
2Ease of operation
If a transistor is used for on/off operation of LED, then light emission control is achieved, but circuit board area increases
Solution Approach 1:
The control function previously performed by a separate transistor is merged directly into the LED structure. The control electrode is integrated with the semiconductor layers, combining the light emission and control functions into a single unified structure, thereby eliminating the need for external transistor control and reducing power loss.
Solution Approach 2:
The LED structure is designed to perform multiple functions: light emission, current conduction, and control signal reception. The control electrode integrated into the semiconductor layers allows the LED to respond to control signals directly, making the LED itself a multi-functional component that eliminates the need for separate control transistors and reduces overall circuit board area.
3Extent of automation
If conventional LED driving unit with transistor is used, then on/off function is achieved, but power consumption increases
Solution Approach 1:
The patent extracts and eliminates the transistor component from the LED driving unit, replacing it with a direct control mechanism integrated into the LED structure itself. This removes the source of power loss associated with transistor operation while maintaining light emission control capability through alternative means.
Solution Approach 2:
The LED structure is designed to control its own light emission directly through the integrated control electrode, without requiring external transistor control. The semiconductor layers with different work functions enable the LED to self-regulate electron and hole movement in response to control signals, making the system self-sufficient and eliminating the energy-consuming transistor component.
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 solution reduces power consumption by eliminating the need for a transistor, thereby minimizing power loss and reducing the circuit board area occupied by the LED driving unit.
Implementation Method 1
an active layer disposed on a substrate to emit light; first and second semiconductor layers facing each other with the active layer interposed therebetween; a control electrode configured to turn on and turn off an emission of the active layer by reversing a moving path of electrons and holes supplied to the active layer
Data Source
AI summary
Disclosed are a light emitting element, which may reduce power consumption, and a light emitting device including the same. The light emitting element includes an active layer emitting light by recombination of electrons and holes respectively supplied from first and second electrodes, and a control electrode controlling light emission of the active layer. Therefore, a transistor conventionally connected to the light emitting element may be omitted and thus power loss generated due to the transistor may be prevented.