Display Data Driving Device Reducing Static Currents
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Solution Overview
Problem
Display devices face challenges in reducing power consumption, particularly due to static currents in data-driving devices, which are not effectively addressed by existing technologies.
Innovation Solution
A data-driving device with channel amplifiers and a controlling circuit that deactivates redundant channel amplifiers when adjacent pixel data is identical, allowing sharing of data voltage to reduce static currents during horizontal driving periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all channel amplifiers remain active continuously, then display quality and reliability are maintained, but power consumption increases due to static currents
Solution Approach 1:
The patent implements dynamic control of channel amplifier activation states based on real-time image data analysis. The controlling circuit dynamically switches amplifiers between active and deactivated states according to whether adjacent pixel data is identical, making the system adaptable to different display scenarios and reducing unnecessary power consumption while maintaining display quality when needed
Solution Approach 2:
The patent changes the operational parameter of channel amplifiers from a fixed active state to a variable state based on image content. By monitoring pixel data similarity and adjusting the activation status of channel amplifiers accordingly, the system optimizes the balance between power consumption and display performance through parameter variation
2Use of energy by moving object
If channel amplifiers are deactivated to reduce power consumption, then static currents decrease, but data voltage supply capability is reduced
Solution Approach 1:
The patent merges the data voltage supply function from multiple channel amplifiers into a single active amplifier when adjacent channels have identical pixel data. The controlling circuit enables one amplifier to supply data voltage to multiple channels simultaneously, reducing the number of active amplifiers while maintaining adequate voltage supply capability for the display
3Use of energy by moving object
If redundant channel amplifiers are deactivated, then static currents are reduced, but device complexity increases due to control mechanisms
Solution Approach 1:
The patent performs preliminary comparison of adjacent pixel data before determining the activation state of channel amplifiers. The controlling circuit analyzes image data in advance to identify regions with identical pixel values, allowing proactive deactivation of redundant amplifiers and simplifying the control logic by using pre-analyzed data patterns
Data Source
AI summary
The present disclosure relates to a data-driving device and a system for driving a display device and, more specifically, a data-driving device and a system for reducing power consumption of a display device by reducing a static current of the data-driving device.