OLED Power Board Architecture Redesign for Size Reduction
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Solution Overview
Problem
OLED TVs face a contradiction between their thin and light design features and the excessive size of the power board due to complex power supply architectures, which are costly and inefficient.
Innovation Solution
A redesigned power board architecture for OLED TVs that omits the standby circuit, simplifies the circuit, and includes a power supply circuit with a PFC circuit, first and second conversion modules, and a changeover switch, allowing for efficient power output sequencing and reducing the power board size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multiple-output power supply architecture with independent control for each output is adopted, then the timing control and power sequence requirements of OLED TV are satisfied, but the power board size becomes excessively large
Solution Approach 1:
The patent merges multiple independent power output circuits into a single integrated power supply architecture. Instead of having separate standby circuit, auxiliary winding, and main circuits that output power independently, the invention combines these functions into one unified power board design where the PFC circuit and conversion modules work together as an integrated system, reducing overall board size while maintaining proper power sequencing through centralized control.
Solution Approach 2:
The power supply circuit is designed to perform multiple functions within a single architecture. The PFC circuit not only performs power factor correction but also generates the high-voltage direct current for multiple conversion modules. The single power board handles standby power, auxiliary power, and main power output functions that were previously distributed across separate circuits, making the system more compact.
2Reliability
If a multiple-output power supply architecture with independent control is used, then the power sequence requirements for OLED startup are met, but the device complexity and cost increase
Solution Approach 1:
The invention combines multiple independent control circuits into a single centralized control mechanism. Rather than having separate control logic for standby circuit, auxiliary winding, and main circuits, the patent implements a unified control system that manages all power outputs through the integrated power supply circuit, reducing architectural complexity while maintaining precise timing control for OLED startup sequences.
Solution Approach 2:
The power supply circuit is designed to pre-establish the proper power sequencing through its integrated architecture. The PFC circuit prepares the high-voltage direct current in advance, and the conversion modules are configured to automatically output power in the correct sequence (standby first, then auxiliary, then main) without requiring complex real-time control logic, thereby simplifying the overall system design.
3Power
If a multiple-output power supply architecture is adopted, then the power requirements for OLED TV are satisfied, but the manufacturing cost increases
Solution Approach 1:
The patent consolidates multiple power output functions into a single power board assembly, reducing the total component count and assembly complexity. By merging the standby circuit, auxiliary winding, and main circuits into one integrated design, the manufacturing process is simplified, requiring fewer separate components and assembly steps, thereby reducing production costs while maintaining full power output capability for OLED TV operation.
Solution Approach 2:
The integrated power supply circuit is designed to perform multiple power delivery functions simultaneously - providing standby power to the motherboard, auxiliary power to control ICs, and main power to switching circuits - all through a single architectural unit. This multi-functionality eliminates the need for multiple separate power supply assemblies, reducing overall manufacturing cost while satisfying all power requirements of the OLED TV system.
Data Source
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AI summary
An organic light-emitting diode (OLED) drive power device and OLED television, OLED drive power device comprising power board connected to motherboard and OLED screen logic board, power board having power supply circuit, first conversion module, second conversion module, changeover switch and power factor correction (PFC) circuit thereon; after powered, power supply circuit starts PFC circuit to output high-voltage direct current (HVDC) according to on-off signal output by motherboard, first conversion module converts HVDC into first voltage and second voltage to power motherboard, and first voltage is converted to power OLED screen logic board; after preset time period, HVDC is converted to power OLED screen logic board to light OLED screen. Redesigning architecture of power board eliminates need for standby circuit and streamlines circuits, meets power output stability and timing requirements of OLED, reduces power board size, reduces power cost and benefits OLED popularization.