Display Power Management Circuit With Dynamic Panel Load Control
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Solution Overview
Problem
Existing display devices face inefficiencies in power management, leading to significant power loss due to fixed driving conditions that do not account for varying panel loads and image data patterns, particularly in LCD panels.
Innovation Solution
A power management circuit with a switch driving circuit and control circuit that adjusts driving conditions based on control signals from a timing controller, including a load analysis circuit to calculate panel load and generate control signals for optimizing power consumption, and a communication circuit for frame-based signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If fixed driving conditions are used in the power management circuit, then the circuit structure is simple, but power loss increases due to inability to adapt to varying panel loads
Solution Approach 1:
The patent implements dynamic driving conditions by introducing a control circuit that receives control signals from a timing controller and dynamically adjusts the driving conditions of the switch driving circuit based on panel load variations. This allows the power management circuit to adapt its operation in real-time, reducing power loss while maintaining manageable complexity through structured control mechanisms.
Solution Approach 2:
The patent changes operating parameters by adjusting the driving conditions (such as switching frequency, duty cycle, or voltage levels) of the power management circuit based on panel load conditions. The control circuit modifies these parameters dynamically, enabling the system to optimize power efficiency across different operating scenarios without requiring a complete redesign of the circuit architecture.
2Use of energy by moving object
If dynamic adjustment of driving conditions is implemented, then power consumption is optimized, but the control circuit complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the control circuit receives control signals from the timing controller that reflect the actual panel load conditions. This feedback loop enables the control circuit to make informed adjustments to the driving conditions, optimizing power consumption while maintaining a reasonable level of complexity through systematic feedback-based control rather than overly complex predictive algorithms.
3Loss of energy
If the power management circuit operates at high efficiency, then power loss is reduced, but the adaptability to different image data patterns decreases with fixed driving conditions
Solution Approach 1:
The patent makes the power management circuit dynamic by enabling it to adjust its driving conditions in response to different image data patterns and panel load conditions. This dynamic capability allows the circuit to maintain high efficiency across varying operating scenarios, including different image content types, resolutions, and refresh rates, thereby simultaneously achieving low power loss and high adaptability.
Data Source
AI summary
The present embodiment relates to a power management circuit and timing controller for a display device. The power management circuit optimizes power consumption by receiving analysis information from a timing controller capable of analyzing image data and changing an operating condition for a power conversion circuit based on the analysis information.