Dual Core Transformer for LCD Backlight Driving Unit
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Solution Overview
Problem
Large-sized LCD devices require multiple transformers for backlight units, leading to increased size and complexity of the backlight driving unit, as well as higher production costs due to the need for multiple inverter setups and complex assembly processes.
Innovation Solution
A dual core transformer design featuring a bobbin with through-holes and wound coils, I and C cores, which provides improved capacity and reduces the number of transformers required, allowing for a more compact and simplified assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple transformers are used to provide sufficient capacity for large-sized LCD devices, then the required power capacity is improved, but the size and complexity of the backlight driving unit increases
Solution Approach 1:
The patent combines two transformer cores into a single integrated dual-core transformer structure. The first and second cores are positioned side-by-side within a common housing, sharing common components such as the bobbin, coils, and housing structure. This merging approach provides the required power capacity of multiple transformers while reducing the overall space occupation and simplifying the backlight driving unit configuration.
2Power
If multiple transformers are used to increase power capacity, then the required capacity is improved, but the device complexity increases
Solution Approach 1:
The patent integrates multiple transformer functions into a single dual-core transformer unit. The first and second transformers share common structural elements including the housing, bobbin structure, and coil windings, thereby reducing the total component count and simplifying the overall device complexity while maintaining the required power capacity.
Solution Approach 2:
The common housing and structural components serve multiple functions: they provide mechanical support for both cores, establish electrical connections for both transformers, and facilitate heat dissipation for the entire assembly. This multi-functionality reduces the need for separate components for each transformer, thereby simplifying the device.
3Power
If multiple transformers are used to achieve required capacity, then the power output is improved, but the assembly process becomes more complex and production costs increase
Solution Approach 1:
The patent combines two transformer assemblies into a single integrated unit with shared components. The common housing, bobbin, and coil structures reduce the number of separate assembly operations required. Instead of assembling and installing multiple independent transformers, the dual-core transformer is assembled as one unit and installed in a single location, thereby simplifying the assembly process and reducing production complexity.
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 dual core transformer achieves twice the capacity of traditional transformers, reducing the number of units needed and minimizing the size of the backlight driving unit, thereby simplifying assembly and lowering production costs.
Implementation Method 1
the transformer 72 amplifies an alternating voltage and outputs an amplified alternating voltage
Data Source
AI summary
A dual core transformer including a bobbin having a through-hole along a first direction; a first coil wound around a first portion of the bobbin; a second coil wound around a second portion of the bobbin; first and second I cores inserted into the through-hole; and first and second C cores covering the first and second portions of the bobbin.