E-paper Display Panel Oxide TFT Low Frequency Driving
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Solution Overview
Problem
Conventional e-paper display apparatuses face a trade-off between low power consumption and display quality, where reducing power consumption either compromises display quality or increases page update time.
Innovation Solution
The e-paper display apparatus employs oxide thin-film transistors with high capacitance density storage capacitors, operating in a low panel frequency mode with fewer frames, to maintain display quality while reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the driving voltage is lowered by adjusting FPL material to reduce power consumption, then power consumption is reduced, but display quality is compromised
Solution Approach 1:
The patent changes the operating parameters by introducing a low panel frequency mode with fewer than ten frames per cycle, operating at less than 30 Hz. This parameter change allows the system to reduce power consumption while maintaining display quality through optimized refresh rates and frame counts rather than simply lowering voltage
Solution Approach 2:
The patent implements dynamic operation modes that can switch between different frame rates and update frequencies. The system dynamically adjusts the number of frames and update frequency based on display requirements, enabling low power consumption mode with fewer than ten frames while maintaining quality when needed
2Use of energy by moving object
If the update frequency is lowered to reduce power consumption, then power consumption is reduced, but page update time is increased
Solution Approach 1:
The patent implements dynamic operation modes that can switch between different frame rates and update frequencies. The system dynamically adjusts the number of frames and update frequency based on display requirements, enabling low power consumption mode with fewer than ten frames while maintaining quality when needed
Solution Approach 2:
The patent uses periodic action by organizing the driving signal into cycles with multiple frames, where each cycle contains fewer than ten frames. This periodic structure with optimized frame counts allows the system to maintain acceptable update times while reducing overall power consumption through lower refresh rates of less than 30 Hz
Data Source
AI summary
An e-paper display apparatus including an e-paper display panel is provided. The e-paper display panel includes multiple pixel circuits arranged in an array. Each of the pixel circuits includes a transistor device. The transistor device is an oxide thin-film transistor. A set of signal waveforms for driving the pixel circuits to display image pages includes multiple frames. In a low panel frequency mode, the number of the frames is less than ten.