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TN mode

Afterwards there appeared what has become the main application liquid crystal displays (LCDs) based on the twisted nematic (TN) mode. These are commonly used for flat panel displays (e.g., desk calculators). Thin film transistor (TFT) LCDs enabled a large number of segments (e.g., 640 x 1024) to be used and they had advantages like... [Pg.407]

Several exciting phenomena described for non-chiral nematic systems were also reported for nanoparticle-doped chiral nematic liquid crystals. We mentioned the work of Kobayashi et al., who, most notably, demonstrated a frequency modulation twisted nematic (FM-TN) mode and fast switching characteristics using metal nanoparticles as dopants [301-307, 313, 314],... [Pg.358]

In a liquid crystal cell based on the TN mode, a homogeneously aligned layer of a nematic liquid crystalline material with positive dielectric anisotropy (Ac), helically twisted by 90°, is placed in an ITO-lined glass cell between crossed polarizers... [Pg.216]

Since the start of the LCD industry in the early 70s, the twisted nematic (TN) mode has been adopted. Fbr the TN mode, the alignment directions of the liquid... [Pg.1]

To fix the twist direction of the twisted nematic (TN) display mode, several methods are used. One is to add a small amount of a chiral agent. A typical chiral pitch for the 5 pm gap TN mode is 100 pm. The other method involves the rubbing direction. The rubbing direction determines the inclination direction of the LC, and it is selected so as to avoid a splay alignment as shown in Fig. 2.32. If the pretilt... [Pg.38]

Pig. 4.5.1 Viewing angle dependence of the contrast ratio of the VA mode (a) TN mode (b) VA mode (c) VA mode with two retardation films (d) MVA mode [1]. [Pg.111]

Fig. 4.6.5 Relaxation state of the TN mode The flow prevents the relaxation motion in the centre. Reproduction by permission from [11]. Fig. 4.6.5 Relaxation state of the TN mode The flow prevents the relaxation motion in the centre. Reproduction by permission from [11].
On the other hand, since 1995, active matrix displays have been predominant over passive matrix displaj in the market. Notebook computers with displays from 10 to 13 inches have been the main application for active matrix LCDs. For this application, TN mode displaj have been used and consequently demand for other modes has been limited. FLCs or AFLCs have little chance of being used for this application. [Pg.219]

In this mode, the rubbing directions on the two substrates are perpendicular to each other. The direction of liquid crystalline molecules is twisted at right angle through cell gap, as in the Twisted Nematic (TN) mode. Therefore, without... [Pg.231]

Sometimes pixels are divided into two domains in which liquid crystal molecules are aligned differently [90-93]. This divided domain TN mode can offer symmetric viewing-angle characteristics, since the two domains mutually compensate for the asymmetric viewing characteristics in the vertical direction. Thus, very wide viewing angles can be obtained for the image displayed with this panel. [Pg.1218]

See other pages where TN mode is mentioned: [Pg.337]    [Pg.343]    [Pg.343]    [Pg.136]    [Pg.290]    [Pg.225]    [Pg.236]    [Pg.243]    [Pg.318]    [Pg.2]    [Pg.102]    [Pg.102]    [Pg.105]    [Pg.111]    [Pg.112]    [Pg.220]    [Pg.222]    [Pg.232]    [Pg.3]    [Pg.102]    [Pg.102]    [Pg.105]    [Pg.111]    [Pg.112]    [Pg.220]    [Pg.222]    [Pg.232]    [Pg.1235]    [Pg.1263]    [Pg.1264]    [Pg.1265]    [Pg.1266]    [Pg.1277]    [Pg.17]   
See also in sourсe #XX -- [ Pg.52 , Pg.54 , Pg.57 , Pg.72 , Pg.82 , Pg.115 , Pg.138 , Pg.173 , Pg.178 ]



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