Display Power Manager Switching for Variable Load Efficiency
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Solution Overview
Problem
Conventional boost circuits in display devices have low conversion efficiency, which is not conducive to low power consumption, especially when dealing with varying load conditions of display screens.
Innovation Solution
A display device with a power manager that controls transistors in a first voltage module to switch on based on the value of the current, utilizing different conversion efficiencies for each transistor state, thereby optimizing power consumption by selecting the appropriate transistor to switch on for the current load condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional boost circuit is used to meet different driving requirements under light or heavy load conditions, then the display device can operate under varying load conditions, but the conversion efficiency is relatively low and power consumption is high
Solution Approach 1:
The boost circuit is segmented into multiple voltage modules (first voltage module and second voltage module) with different conversion efficiencies. The power manager selectively activates specific modules based on load conditions, dividing the single circuit into functional segments that can be independently controlled to optimize efficiency.
Solution Approach 2:
The power manager dynamically adjusts which voltage module is active based on real-time load conditions. Under light load conditions, the first voltage module with higher conversion efficiency is activated; under heavy load conditions, the second voltage module is activated. This dynamic switching resolves the contradiction by adapting the circuit configuration to match operational demands.
2Power
If the output current is set to meet heavy load conditions, then the driving requirement is satisfied, but the power consumption increases during light load conditions
Solution Approach 1:
The system changes the operational parameters (which voltage module is active) based on load conditions. The power manager monitors load requirements and switches between the first voltage module (optimized for light load with lower power consumption) and the second voltage module (optimized for heavy load with higher output current capability), thereby resolving the contradiction between maintaining sufficient power output and minimizing energy consumption.
3Use of energy by moving object
If the output current is set to meet light load conditions, then the power consumption is reduced, but the driving requirement is not satisfied under heavy load conditions
Solution Approach 1:
The power manager implements dynamic parameter adjustment by switching between different voltage modules based on real-time load detection. When heavy load conditions are detected, the system transitions from the low-power first voltage module to the high-current-capable second voltage module, ensuring that power requirements are met while minimizing unnecessary power consumption during light load periods.
Data Source
AI summary
The present invention provides a display device and an electrical terminal including a display panel, a driver electrically connected to driving a display panel to display images, a power manager electrically connected to the driver. A first voltage module (included in the power manager) includes a first transistor and a second transistor. The power manager is configured to at least one of the first transistor and the second transistor to switch on according to a value of a first current of the first voltage module transmitted to the driver control. Also, three conversion efficiencies of the first voltage module respectively in conditions of only the first transistor switching on, only the second transistor switching on, and both the first and second transistors switching on are different to reduce power consumption of the display device.