Liquid Crystal Display Output Channel Charge Sharing Optimization
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Solution Overview
Problem
Current liquid crystal display technologies lack effective power-saving methods, making it difficult to reduce power consumption.
Innovation Solution
A method that divides output channels into sets, calculates average power consumption using charge-sharing methods, selects the lowest power consumption method, and switches coupling relationships among output channels to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional output channel structures are used without charge-sharing optimization, then the display function is maintained, but power consumption remains high
Solution Approach 1:
The output channels are divided into multiple sets (e.g., first set, second set, third set, fourth set) where channels within each set are coupled together for charge-sharing. This segmentation allows independent optimization of each set's coupling relationship, reducing overall power consumption while maintaining manageable control complexity through modular organization.
Solution Approach 2:
The coupling relationships among output channels are dynamically switched based on the display content and power consumption requirements. The system can adaptively change which channels are coupled together (e.g., coupling CH1-CH2 in first set, CH3-CH4 in second set) to optimize power savings for different display scenarios, making the power management flexible and context-aware.
2Use of energy by moving object
If charge-sharing methods are implemented to reduce power consumption, then energy efficiency improves, but the calculation and selection process becomes more complex
Solution Approach 1:
The system pre-calculates and stores the average voltage values for each output channel in advance (e.g., storing average voltage of CH1, CH2, CH3, CH4) before determining the coupling relationship. This preliminary action simplifies the real-time decision-making process by having ready-to-use voltage data, reducing the computational complexity during actual power optimization operations.
Solution Approach 2:
The system measures the actual power consumption or voltage levels of each channel, uses this feedback to determine optimal coupling relationships, and adjusts the channel groupings accordingly. This closed-loop feedback mechanism enables the system to continuously optimize power consumption based on actual operating conditions while maintaining relatively simple control logic.
Data Source
AI summary
A liquid crystal display power saving method is disclosed. It includes steps of: (a) dividing output channels coupled to a panel into multiple sets and each set includes M output channels, M is a positive integer; (b) calculating an average of the (N−1)-th display line of the panel after charge sharing, N is a positive integer larger than 1; (c) determining whether each of M output channels consumes power when it transmits a data signal from the (N−1)-th display line to the N-th display line; (d) calculating total power consumption of transmitting the data signal from the (N−1)-th display line to the N-th display line under possible charge sharing methods among the M output channels; (e) selecting a lowest power consumption charge sharing method from the possible charge sharing methods; and (f) switching coupling relationships among the M output channels according to the lowest power consumption charge sharing method.