Timing Controller for Display Device Power Optimization
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Solution Overview
Problem
Display devices face challenges in reducing power consumption, particularly in the timing controller and source driver, which are not effectively addressed by existing technologies, necessitating a solution that can adapt to different display patterns and charge sharing structures to optimize power usage.
Innovation Solution
A low power driving system and timing controller that recognizes display patterns and transmits option information to the source driver to perform either low power mode or adaptive charge sharing, controlling power consumption based on static or dynamic patterns, and applying these controls to the output buffer, gamma buffer, and intermediate driving voltage buffer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the timing controller and source driver operate at full power to ensure display performance, then display quality is maintained, but power consumption increases
Solution Approach 1:
The patent implements dynamic power management by classifying display patterns into static and dynamic types. For static patterns (e.g., wallpaper, still images), the system applies low power mode with reduced refresh rates and disabled frame buffers. For dynamic patterns (e.g., videos, animations), the system uses adaptive charge sharing to optimize power delivery. This dynamic adaptation allows the display to maintain performance when needed while consuming less power during static displays.
Solution Approach 2:
The patent changes operational parameters based on display content characteristics. It modifies refresh rates, adjusts charge sharing ratios, and switches between different power modes (low power vs. normal power) depending on whether the displayed content is static or dynamic. These parameter changes enable the system to optimize the balance between power consumption and display performance adaptively.
2Use of energy by moving object
If adaptive charge sharing is implemented to reduce power consumption, then energy efficiency improves, but device complexity increases
Solution Approach 1:
The patent segments the power management control into distinct functional modules: a display pattern recognition unit that classifies content as static or dynamic, a charge sharing control unit that calculates optimal sharing ratios, and an execution unit that applies the control strategies. This segmentation makes the complex adaptive charge sharing mechanism more manageable and implementable by distributing functionality across separate components.
Solution Approach 2:
The system implements self-service through automatic display pattern recognition and autonomous charge sharing ratio adjustment. The timing controller automatically detects whether the displayed content is static or dynamic and autonomously configures the charge sharing parameters without requiring manual intervention or complex external control systems, thereby reducing overall system complexity.
3Use of energy by moving object
If low power mode is used for static patterns, then power consumption decreases, but adaptability to different display scenarios is reduced
Solution Approach 1:
The patent employs dynamic pattern recognition to automatically distinguish between static and dynamic display content. Based on this real-time classification, the system dynamically switches between low power mode for static patterns and adaptive charge sharing for dynamic patterns. This dynamic adaptability ensures the system can effectively handle various display scenarios while optimizing power consumption for each specific case.
Solution Approach 2:
The patent creates a universal power management framework that can handle multiple display scenarios through a single adaptive system. The display pattern recognition mechanism universally identifies different content types (static images, videos, animations, mixed content), and the charge sharing control universally applies appropriate power optimization strategies across all these scenarios, making the system versatile without requiring separate dedicated mechanisms for each display type.
Data Source
AI summary
Disclosed are a low power driving system and timing controller for a display device. The low power driving system for a display device may include a timing controller configured to transmit a packet to which one of first option information corresponding to a static pattern or second option information corresponding to a dynamic pattern is applied, and a source driver configured to receive the packet and to perform a low power mode corresponding to the static pattern based on the first option information or adaptive charge sharing corresponding to the dynamic pattern based on the second option information.