The Colored Oil Property Effect on Switching Behavior of Electro-Fluidic Display

• 作者: Alex Henzen Biao Tang Guofu Zhou Yong Deng Yuanyuan Guo
• 来源期刊: 材料科学与应用期刊(英文)
• 学科: 经济
• 关键词: ELECTRO Fluid DISPLAY Device Oil/Water INTERFACIAL Tension/Viscosity/Conductivity RUPTURE Voltage Opening Ratio
• 年，卷（期）: clkxyyyqkyw,（2）
• 页码范围: 167-176
• 页数: 10页
• 分类号: F42

摘要

The switchable oil layer driven by electrowetting gives visible color and light valve control, which is the basis of Electro-Fluidic Displays. The colored oil’s property is a key factor that influences the Electro-Fluidic Displays switching behavior. A purple oil was formulated by the oil-soluble purple dye in decane in this study. The dye molecule itself is nonpolar and it doesn’t dissolve in water. The concentration of colored oil influenced the oil/water interfacial tension and oil viscosity. The relationship of EFD switching behavior with oil/water interfacial tension, oil viscosity, and oil conductivity has been systematically investigated. The oil/water interfacial tension decreased with increasing oil concentration, in the meanwhile, the conductivity increased. Oil conductivity was one of the key factors that influenced the Electro-Fluidic Displays optical property. We found for the first time that at the lower oil concentration (2% - 10%), the interfacial tension plays a main role effect on the rupture voltage and response time, but as the conductivity of higher concentration of colored oil increased (at 20%), the rupture voltage-controlled both by conductivity and interfacial tension.