Film-like Liquid Crystal Displays

Abstract

We consider the K-body local correlations in the (repulsive) 1D Bose gas for general K, both at finite size and in the thermodynamic limit. Concerning the latter we develop a multiple integral formula which applies for arbitrary states of the system with a smooth distribution of Bethe roots, including the ground state and finite-temperature Gibbs states. In the cases K ≤ 4 we perform the explicit factorization of the multiple integral. In the case of K = 3 we obtain the recent result of Kormos et al, whereas our formula for K = 4 is new. Numerical results are presented as well.

Technologies toward flexible liquid-crystal displays

“…The detailed sequence of fabricating an FLLCD display has been published. 4 The processes are described briefly here, as shown in Fig. 1.…”

“…This performance is four times better than our previous work due to better cell-gap control. 4 The UV-cured adhesive substrate used in our work had a very low T g of~-9.5°C and a sufficiently high decomposition temperature T d of~300°C, measured by a differential scanning calorimeter (DSC) and a thermal gravity analyzer (TGA), respectively. The low T g of the UV-cured adhesive substrate makes the FLLCD not only flexible but also foldable compared with a polyethersulfone (PES) substrate (T g ,~210°C).…”

“…Using this thin-film substrate and a polymer-added liquid crystal (PALC), an ultra-flexible film-like LCD (FLLCD) has been fabricated, and this technology is roll-to-roll compatible due to the coating process. 3,4 When electronic displays are used as an e-book reader, a display with the same visual impression as paper rather than a computer screen is preferred. Displays with paperwhite appearance have been demonstrated by several technologies, such as electrophoretic E-ink 5 and liquid powder 6 and cholesteric LC (Ch-LC).…”

Enhanced Adhesion and Transmittance Uniformity in Laminated Polymer-Dispersed Liquid Crystal Films

“…However, it is rather difficult to obtain uniform electro-optic properties over large areas due to the flexibility of the plastic substrates and the high pressure used during the lamination of the top film [25,26]. To solve these problems, a method -coating a mixture of LC/pre-polymer and spacers, laminating a top film, and preparing the PDLC by UV-induced phase separationhas been proposed that provides a uniform cell gap between the two plastic films after lamination [27]. However, the dispersed spacers affect the LC droplet distribution during phase separation leading to positionally nonuniform light scattering properties [27][28].…”

“…To solve these problems, a method -coating a mixture of LC/pre-polymer and spacers, laminating a top film, and preparing the PDLC by UV-induced phase separationhas been proposed that provides a uniform cell gap between the two plastic films after lamination [27]. However, the dispersed spacers affect the LC droplet distribution during phase separation leading to positionally nonuniform light scattering properties [27][28]. Under bending stress, the dispersed spacers can also lead to scratch defects on the ITO surface [28].…”