Biaxial Integrated Optical Film for VA Mode LCD's Made from In-situ Photopolymerised Reactive Mesogens

  • Kim, Kyeong-Hyeon (LCD R&D center, LCD Business SAMSUNG electronics Co., LTD) ;
  • Lyu, Jae-Jin (LCD R&D center, LCD Business SAMSUNG electronics Co., LTD) ;
  • Chung, Dong-Hoon (LCD R&D center, LCD Business SAMSUNG electronics Co., LTD) ;
  • Verrall, M (Merck New Business - Chemicals) ;
  • Slaney, K (Merck New Business - Chemicals) ;
  • Perrett, T (Merck New Business - Chemicals) ;
  • Parri, O (Merck New Business - Chemicals) ;
  • Lee, Seung-Eun (LC technical Centre, Merck Advanced Technologies Ltd.) ;
  • Lee, Hee-Kyu (LC technical Centre, Merck Advanced Technologies Ltd.)
  • Published : 2004.06.24

Abstract

For high end, large area displays, all current LC modes require some degree of optical compensation to improve the front of screen viewing experience. Currently most optical films are laminated to the outside of the LCD cell, between the glass and polariser. In this paper we wish to show how it is possible to integrate the compensating optical film within a VA mode LCD cell. The paper will describe the process of making the biaxial film through the process of in-situ photopolymerisation of an aligned film of reactive mesogens in the cholesteric phase using polarised UV light. The film can be made on the colour filter array side of the LCD panel. In addition the process of fabricating a VA mode LCD containing this film will be described and the performance of this module will be presented.

References

  1. D. J. Broer, G. N. Mol, J.A.M.M. van Haaren, and J Lub, Advanced Materials, 11,573(1999) https://doi.org/10.1002/(SICI)1521-4095(199905)11:7<573::AID-ADMA573>3.0.CO;2-E