ArticleMicromachines2019
A Driving System for Fast and Precise Gray-Scale Response Based on Amplitude-Frequency Mixed Modulation in TFT Electrowetting Displays.
Article in Micromachines, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- A New Waveform to Solve the Ghosting of BWR EPD.Micromachines · 2025Article
- Research on Hydrodynamic Characteristics of Electronic Paper Pixels Based on Electrowetting.Micromachines · 2023Article
- Stability Study of Multi-Level Grayscales Based on Driving Waveforms for Electrowetting Displays.Micromachines · 2023Article
- Dynamic Adaptive Display System for Electrowetting Displays Based on Alternating Current and Direct Current.Micromachines · 2022Article
- A Multi-Electrode Pixel Structure for Quick-Response Electrowetting Displays.Micromachines · 2022Article
- Toward Suppressing Oil Backflow Based on a Combined Driving Waveform for Electrowetting Displays.Micromachines · 2022Article
- A Fast-Response Driving Waveform Design Based on High-Frequency Voltage for Three-Color Electrophoretic Displays.Micromachines · 2021Article
- Article
- Design of Driving Waveform for Shortening Response Time of Black Particles and White Particles in Three-Color Electrophoretic Displays.Micromachines · 2021Article
- Design of Driving Waveform for Shortening Red Particles Response Time in Three-Color Electrophoretic Displays.Micromachines · 2021Article
- A Separated Reset Waveform Design for Suppressing Oil Backflow in Active Matrix Electrowetting Displays.Micromachines · 2021Article
- Progress in Advanced Properties of Electrowetting Displays.Micromachines · 2021Review
- Design of Driving Waveform Based on a Damping Oscillation for Optimizing Red Saturation in Three-Color Electrophoretic Displays.Micromachines · 2021Article
- Driving Waveform Design of Electrowetting Displays Based on an Exponential Function for a Stable Grayscale and a Short Driving Time.Micromachines · 2020Article
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Authors and funding
6 authors.
Funding
Abstract
The gray-scale display which is driven by PWM (pulse width modulation) in TFT (thin film transistor) electrowetting displays (EWDs) has some shortcomings, such as large amplitude of oil oscillation in pixels and slow response speed for displaying gray scale. In this paper, an amplitude-frequency mixed modulation driving system is proposed to improve the response speed of driving gray scale and enhance the oil stability when the gray scale is displayed. In the initial stage of the driving process, the oil is driven by a high voltage to close to the target luminance, and the driving voltage is then decreased to stabilize the oil. The electrowetting hysteresis curve was used to calculate the relation model between the driving voltage and the luminance of the pixel in the system, and the driving voltage value of the pixel at each driving stage was then set to make the oil precisely and rapidly stabilize at the target luminance value. In the output driving platform, the amplitude-frequency mixed modulation is realized based on the source IC, which was used to realize digital-to-analog conversion. An 8 inch EWD was tested using an Admesy colorimeter, and the experimental results show that the pixel response time is reduced by 70% and the gray-scale oscillation is reduced by 80%.
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