Ring-shaped stain patterns driven by solute reactive mesogens in liquid crystal solution
| Autor: | Tae Woon Cha, Hyoung Sub Lee, Hyang-Shik Kong, Sang Gun Choi, Xavier Bulliard, Sang Youn Han |
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| Rok vydání: | 2014 |
| Předmět: |
Liquid-crystal display
Materials science Acoustics and Ultrasonics education Nanotechnology Condensed Matter Physics Ring (chemistry) Drop volume Stain Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Vertical alignment law Chemical physics Liquid crystal Inkjet printing |
| Zdroj: | Journal of Physics D: Applied Physics. 47:285302 |
| ISSN: | 1361-6463 0022-3727 |
| DOI: | 10.1088/0022-3727/47/28/285302 |
| Popis: | We report on the formation of ring-shaped stain patterns in a polymer-stabilized patterned vertical alignment mode liquid crystal display (LCD) during the cell filling process. Through the interpretation of the formation mechanism, an effective way to control its development is provided. Systematic trace of the reactive mesogens reveals that the formation of patterns is strongly related to the segregation of solute mesogens in the stain area. These undesirable patterns can be avoided or controlled by reducing the drop volume at each droplet using an inkjet printing technique, meaning that the printing technique could be a useful solution in display technology. For the formation of ring-shaped patterns, the dragging of reactive mesogens during the spreading of the liquid crystal solution plays a key role in the closed LCD cell. |
| Databáze: | OpenAIRE |
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