Ink drop filling by a slot coating die for an electrowetting display panel
| Autor: | Wei-Yuan Cheng, Kai-Wei Lan, Chia-Jen Kao, Kuo-Lung Lo, Liu Ta-Jo |
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| Rok vydání: | 2014 |
| Předmět: |
Flow visualization
Materials science Inkwell Drop (liquid) Hexadecane engineering.material Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Contact angle chemistry.chemical_compound chemistry Coating engineering Electrowetting Electrical and Electronic Engineering Composite material Tetradecane |
| Zdroj: | Journal of the Society for Information Display. 22:337-345 |
| ISSN: | 1071-0922 |
| Popis: | Ink drops have to be filled into the square cells for an electrowetting display panel. Several ink solutions such as dodecane, tetradecane, and hexadecane were used as test liquids. These fluids have viscosities less than 4 mPas and surface tensions between 23.3 and 26 mN/m and contact angles less than 50°. A slot coating die was employed to deliver these liquids to fill up the square cells. The effects of several parameters such as coating thickness and coating speed were examined. Operating windows inside which the stable filling is possible could be found for these liquids. Several defects were observed outside the operating windows. A flow visualization technique was applied to observe the fluid motion in the coating bead region, particularly the movements of upstream and downstream menisci, the mechanism of liquid filling was discussed. |
| Databáze: | OpenAIRE |
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