Rubbing methods uniformity

Dry the sieve and count and examine any particles remaining on the sieve. Brush any particles retained on No 60 sieve onto No 40 sieve. Note if the particles are grit as indicated by their lack of uniformity land a scratching noise when pressing and rubbing the material on a smooth glass slide with.a. smooth steel spatula. Report die number of particles on No 60 sieve and on No 40 sieve 4.4-3.1 Determination of Moisture Use Karl Fischer Method, described in MIL-STD-650 as Method 101.4, with methanol as the special solvent. A detailed description... 

Another interesting technology involves a novel method of FLC and AFLC orientation that also applies a polymer-wall structure. Minato etal. have reported that they were able to obtain uniform orientations by appl5ring a temperature graduation method to FLC panels with polymer walls [37]. This method utilizes the reduction of volume on partial cooling and is able to realize a uniform C2 orientation and a uniform alignment with antiparallel rubbing, etc. 

Manufacture of liquid crystal displays uses some of the most complex and advanced manufacturing techniques. In active matrix displays, TFT circuits are uniformly manufactured at resolution limits of a micron or less on substrates several square metres in area. In most types of liquid crystal displays, liquid crystal molecules are aligned with high precision in directions parallel and perpendicular to the display substrate. This is usually done by a method which has been in use since the discovery of substrate-aligned layers - rubbing. 

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