Dynamic Voltage Adjustment for Display Panel Power Efficiency
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Solution Overview
Problem
Display panels in electronic devices face challenges in achieving optimal power efficiency due to varying input voltage requirements based on operational modes, display types, and features, making it difficult to predetermine the best input voltage for efficiency.
Innovation Solution
The implementation of a voltage adjustment mechanism within electronic devices, utilizing a controller and voltage circuitry to dynamically adjust the display panel input voltage by comparing power measurements at different voltage levels and selecting the lowest power consumption setting, thereby optimizing power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single fixed input voltage is used for the display panel, then the device structure is simple, but the power efficiency cannot be optimized across different operational modes
Solution Approach 1:
The patent implements dynamic voltage adjustment by switching between multiple voltage levels (18V, 20V, 22V, 24V) based on operational modes such as brightness settings and display content requirements. The system transitions from a static single-voltage approach to a dynamic multi-voltage system that adapts to changing operational conditions, optimizing power efficiency while managing complexity through mode-based control
Solution Approach 2:
The system changes the voltage parameter of the display panel based on different operational modes and display characteristics. By adjusting the input voltage level according to specific conditions (e.g., brightness requirements, display type), the system optimizes power consumption without requiring complete system redesign, thereby improving energy efficiency while maintaining manageable complexity
2Use of energy by moving object
If the input voltage is increased to improve display performance, then the display quality improves, but the power consumption increases
Solution Approach 1:
The system dynamically adjusts voltage levels based on actual display performance requirements and power consumption conditions. By switching between multiple voltage levels (18V-24V) rather than using a fixed high voltage, the system maintains display quality when needed while reducing power consumption during normal operation, thus resolving the contradiction between performance and energy efficiency
Solution Approach 2:
The patent changes the voltage parameter adaptively based on operational modes and display characteristics. By selecting appropriate voltage levels (18V for standard mode, 20V for high brightness, 22V for OLED, 24V for maximum performance) rather than consistently using the highest voltage, the system optimizes the balance between display performance and power consumption
Data Source
AI summary
In some examples, an electronic device includes a display panel, voltage circuitry to provide a voltage output to the display panel, and a controller. In some examples, the controller sets the voltage output of the voltage circuitry to a first voltage. In some examples, the controller obtains a first display panel power measurement at the voltage output. In some examples, the controller compares the first display panel power measurement with a second display panel power measurement. In some examples, the controller changes the voltage output to a second voltage based on the comparison.