A population distribution model for the alignment of nematic liquid crystals

Multi-Domain Alignment of Liquid Crystal Using a Stamp of Anisotropic Morphology Fabricated by a Directional Polymerization of Reactive Mesogen

“…Among the many methods of alignment techniques, a rubbing method has been widely used due to its cost effectiveness and strong anchoring characteristics [1,2]. However, direct contact of the rubbing roller to the polymer substrate can deteriorate the surface properties of the alignment layer and induce electrostatic charge.…”

Liquid crystal alignment and pretilt angle generation on a photopolymer layer based onN-(phenyl)maleimide

“…The three photopolymers are as follows. to align LC molecules, and the eVect of unidirectional rubbing on various alignment layers has been discussed (a) PMIF: N-( phenyl )maleimide including a uoro by many investigators [1][2][3][4][5][6]. The rubbing method precinnamoyl group; sents a number of obstacles, such as the generation of ( b) PMI3CA: N-(phenyl)maleimide with a 3-carbon electrostatic charge and the creation of contaminating chain cinnamoyl group; particles.…”

Residual d.c. measurement in in-plane switching liquid crystal displays by a new light minimum/maximum method on a polyimide layer

“…In-plane switching (IPS) LCDs used for desktop monitors are required to have high resolution, vivid colour performance, and no image sticking [7]. Rubbed polyimide (PI) surfaces have been used to obtain a uniform LC alignment and a high pretilt angle [8][9][10][11], and it is well known that a PI layer in uences the electrical properties, such as residual d.c., of an LC cell [12][13][14]. It is also commonly understood that residual d.c. is related to image sticking; for example, where a ghost image remains on changing the display signal after the image has been displayed for a long time.…”