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Optical compensation of Liquid Crystal Displays.
Crysoptix has developed printable materials for manufacturing Thin Birefringent Films™ (TBF)* - retarders - via printing technology. The advanced technology is based on molecular engineering of organic materials and allows adjusting chemical structure of low molecular components with printing techniques (including roll-to-roll slot die) to produce the coatable sub-micron TBF™ with the required three-dimensional refractive index and retardation.
Crysoptix has developed new liquid self-assembling materials* which produce TBF™ retarders by coating on glass or plastic substrate and subsequent drying, thereby transforming the liquid coating material into molecularly oriented nano-film.
Formation of molecular stacks in liquid phase and globalization of order by application method
High optical anisotropy and transparency of the resulting TBF™ make high-efficiency optical compensators for LCDs. The different newly engineered compounds enable to make a variety of Thin Birefringent FilmsTM with negative A-plate, negative C-plate, and biaxial retardation functions.
Coatable retarders are less expensive than existing stretched materials, and coating on a substrate which is already present in a display provides additional cost savings. For wider viewing angle in LCD TVs the cost of stretching grows with the size of the film (because of industrial difficulties in manufacturing highly uniform retardation plates over a large area), while the cost of printing actually decreases with the size of the film along with a baseline cost reduction of at least 20%.
Additionally Crysoptix molecular engineering allows 3D refraction control of the final coated film for better optical performance.
| Product Features and Benefits |
- Wide viewing angle
- Coatable on glass or plastic
- Thin - 200 times less for the same function > less material used and lower cost
- High thermal stability meets requirements for in-cell LCD application
- Printing on glass means less supporting substrates > lower cost
- Effective optical compensation of IPS and VA LCD modes**( the first choice for TV LCD)
*) PCT publication WO2007042788
**) Patents pending
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