OLED Power Board Voltage Control for Variable Panel Load
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Solution Overview
Problem
Conventional OLED display devices maintain a constant voltage regardless of load changes, leading to reduced lifespan and decreased power efficiency due to unnecessary stress on elements and energy waste.
Innovation Solution
A DC voltage supply method that adjusts the pulse frequency of a control signal based on load changes, allowing for an optimized DC voltage output to the display panel, reducing stress and improving power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constant voltage is supplied to the OLED display device to maintain stable operation, then the display device can operate reliably, but stress is applied to related elements even when load is small, reducing lifespan
Solution Approach 1:
The patent applies dynamics by transitioning from a static constant voltage supply to a dynamic voltage supply that adjusts according to load conditions. The power board detects current consumption and modulates the DC voltage accordingly, making the voltage supply adaptive to real-time operational demands, thus reducing unnecessary stress on elements during low-load periods while maintaining stability during high-load operation
Solution Approach 2:
The patent implements parameter changes by varying the DC voltage level based on detected current consumption. When current is low, the voltage is reduced; when current is high, the voltage is maintained or increased. This dynamic parameter adjustment resolves the contradiction by matching voltage supply to actual operational needs, extending lifespan without compromising reliability
2Reliability
If a constant voltage is supplied to maintain stable operation, then the display device operates consistently, but power efficiency is lowered and energy waste is caused when load is low
Solution Approach 1:
The patent employs feedback by having the power board continuously detect the current consumption of the display device and use this information to adjust the voltage supply. This closed-loop control ensures that voltage is optimized based on actual load conditions, maintaining consistent operation while preventing energy waste during low-load periods through real-time feedback-driven adjustments
Solution Approach 2:
The dynamic voltage adjustment mechanism allows the system to transition from a static energy-consuming constant voltage supply to a dynamic supply that adapts to load conditions. By making the voltage supply flexible and responsive to actual operational demands, the system maintains consistency when needed while minimizing energy consumption when load is low
Data Source
AI summary
A display device comprises: a display module including a display panel; a control board for controlling the display module; and a power board for outputting direct current voltage to the display module. The power board changes the pulse frequency of a control signal so as to output direct current voltage adjusted according to changes in the load of the display panel.