Polymeric liquid crystal composition and its application
A technology of polymeric liquid crystals and compositions, applied in liquid crystal materials, chemical instruments and methods, etc., can solve problems such as poor stability, uneven alignment, easy crystallization, etc., and achieve low melting point, long supercooling time, and large optical anisotropy The effect of the opposite sex
Active Publication Date: 2015-09-02
JIANGSU HECHENG DISPLAY TECHCO
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Problems solved by technology
Japanese patent JP2003193053 provides a polymeric liquid crystal composition with a lower melting point, but there is a serious problem of uneven alignment
U.S. Patent US6090308 provides a polymeric liquid crystal composition with a lower melting point, but there are problems such as poor stability and easy crystallization
Method used
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Embodiment 1
[0085] The formula of the liquid crystal composition is as follows:
[0086]
[0087] Performance parameter test results:
[0088] Mp: 37°C;
[0089] Cp: 86°C;
[0090] Δn: 0.183;
[0091] Overcooling time: 30 days.
[0092] The polymerizable liquid crystal composition provided by the present invention has a lower melting point, so the construction temperature is lower (usually at 40°C); it has a higher birefringence index, so less materials can be used to achieve optical effects; and it also With a longer supercooling time, the stability of the polymerizable liquid crystal composition is greatly improved, and the occurrence of abnormal phenomena such as abnormal alignment can be avoided.
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The invention provides a polymerizable liquid crystal composition. The polymerizable liquid crystal composition comprises at least one compound conforming to a general formula I and including two polymerizable groups, which serving as a first component, and at least one compound conforming to a general formula II and including one polymerizable group, which serving as a second component. Compared with other polymerizable liquid crystal compositions in the prior art, the polymerizable liquid crystal composition provided by the invention has a lower melting point, larger optical anisotropy and longer supercooling time, and can be used for optical anisotropic bodies. The invention also provides application of the polymerizable liquid crystal composition in the aspect of the optical anisotropic bodies.
Description
technical field [0001] The invention relates to a polymerizable liquid crystal composition and its application in optical anisotropy. Background technique [0002] In recent years, with the development of the information society, simple liquid crystal displays can no longer satisfy people's pursuit of display, and it is necessary to use optical anisotropic bodies with various functions to help improve the display quality. For example, phase difference plates can be used for optical compensation to improve viewing angle characteristics, brightness enhancement films can be used for light recycling to improve optical efficiency, patterned retarders or lenticular lens films can be used to Change the optical parameters to realize the conversion of 2D / 3D display. [0003] Optically anisotropic bodies can be made by mechanically processing ordinary polymers. For example, polycarbonate films can be mechanically stretched to obtain retardation plates, and polyester films can be mode...
Claims
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IPC IPC(8): C09K19/38
Inventor 宋晓龙
Owner JIANGSU HECHENG DISPLAY TECHCO
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