LED with Conductor Channels for AC DC Operation
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Solution Overview
Problem
Conventional light emitting diodes (LEDs) are limited in their ability to operate efficiently with both DC and AC powers, as they typically require specific voltage conditions and structures to emit light effectively.
Innovation Solution
The design includes a substrate with semiconductor layers and conductors that allow for the creation of channels and recesses through breakdown phenomena, enabling the LED to function with both DC and AC powers by improving electrical conductivity and light emission characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional LED structure is used, then the LED can operate with DC power, but it cannot operate efficiently with AC power
Solution Approach 1:
The LED structure is segmented into distinct functional regions: a first semiconductor layer (N-type or P-type), a second semiconductor layer (opposite polarity), and a conductor layer positioned between them. This segmentation allows independent optimization of each layer's properties to handle both AC and DC power sources effectively.
Solution Approach 2:
The conductor layer serves multiple functions simultaneously: it acts as an electrical connection path, forms a depletion region with the semiconductor layers to enable AC operation, and maintains structural integrity. This multi-functionality allows the LED to operate with both AC and DC power sources without requiring separate structures for each mode.
2Power
If voltage is applied to conventional LED, then light is emitted through electron-hole recombination, but the current-voltage characteristics are limited
Solution Approach 1:
The patent creates a localized depletion region at the interface between the conductor layer and semiconductor layers through controlled breakdown phenomena. This local modification of electrical properties enhances carrier injection efficiency and stabilizes current-voltage characteristics without affecting the overall device structure or requiring complex external circuits.
3Reliability
If breakdown phenomena are utilized to form channels and recesses, then electrical conductivity is improved and light emission is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The conductor layer and semiconductor layers are designed to automatically form the desired channel structure through controlled breakdown phenomena when voltage is applied. The breakdown process itself creates the necessary recesses and conductive paths without requiring precise pre-forming, allowing the structure to self-organize into the optimal configuration for AC and DC operation.
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
The solution enables LEDs to emit light efficiently with both DC and AC powers, improving current-voltage characteristics and light output power, while reducing electrical resistance and enhancing electroluminescence characteristics through the formation of channels and recesses in the conductors.
Implementation Method 1
a conductor passing through the second semiconductor layer and the active layer to contact the first semiconductor layer
Implementation Method 2
a portion of the current is converted into light by recombination of electrons and holes when a voltage is applied to terminals of both electrodes
Implementation Method 3
channels and recesses through breakdown phenomena, enabling the LED to function with both DC and AC powers by improving electrical conductivity
Data Source
AI summary
Provided is a light emitting diode. The light emitting diode includes a substrate, a first semiconductor layer on the substrate, an active layer on the first semiconductor layer, a second semiconductor layer on the active layer, and a conductor passing through the second semiconductor layer and the active layer to contact the first semiconductor layer.