Reactive Mesogens Formulations
RM materials from Merck for improved display performance
Most advanced LCD applications pose very challenging performance requirements. Contrast ratio and color shift depending on viewing angle are two of the most critical parameters. Thanks to the anisotropic optical properties of reactive mesogens (RM) and of the polymer films formed by them, they are well suited to compensate the optics of the LCD to achieve the required performance.
Your advantage - Customized materials for individual requirements
As a world-leading supplier of electro-optical liquid crystal mixtures, Merck has used its in-depth experience to develop a range of ready-to-use reactive mesogen formulations for various applications. licrivue® RM materials from Merck improve viewing angle and color performance of large-area LCD TVs or find use in mobile displays where thin film thickness and asymmetric director profiles are advantageous. In addition to our range of standard products, Merck develops customized materials for individual customer requirements.
Applications - Commercially versatile technology
As the first company in the world, Merck commercialized reactive mesogen formulations for patterned in-cell retarders for transflective LCDs and parallax barriers for 3D displays for mobile applications. However, optical films made with licrivue® RM materials can be used in all kinds of displays from LCD TV screens and PC monitors including 3D displays to portable and mobile applications such as notebook computers, mobile phones, or navigation devices.
Typical applications for optical elements using RMs are viewing angle compensation films for IPS, TN, and VA LCDs, patterned retarders for transflective LCDs and 3D displays, quarter and half wave foils in consumer electronics, anti-reflection circular polarizers for OLED displays, or Cholesteric Liquid Crystals (CLC) for brightness enhancement films.
The technology - What are reactive mesogens?
Reactive mesogens are liquid crystalline materials whose chemical structure includes one or more polymerizable groups, typically acrylates, allowing those materials to be in-situ polymerized, usually by UV photo-polymerization, into very thin polymer films. By doing so, the anisotropic structure of the corresponding liquid crystal phase can be perfectly preserved in the cross-linked polymer. Reactive mesogen solutions can either be coated onto flexible plastic foils by roll-to-roll coating processes to form compensation films or be used inside the display to form in-cell optical elements, either as patterned or monolithic retarders.
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