Wide-viewing-angle LCD controlled by a lateral electric field

摘要

With the aim of developing a wide viewing angle liquid crystal display (LCD), we are trying to apply in-plane switching (IPS) mode, in which liquid crystal molecules are switched by a lateral electric field, to TFT-LCD. We have studied the detailed relationship between the electro- optical properties and the various panel conditions. From these results, we specified the panel conditions, such as plus 10.4 dielectric anisotropy of liquid crystal material, 3.5 micrometer panel gap and 8 micrometer electrode spacing, to fabricate the IPS mode TFT panel. We have achieved the IPS mode TFT color panel that possessed not only wide viewing angle characteristics over 80 degrees with no reversed image but also a fast response time 50 ms, a low driving voltage compatible with ordinary twisted nematic (TN) mode TFT panel and a fine white balance, (x,y) equals 0.32, 0.34).