Title :
View angle characters of the new type LCD. II
Author :
Yu, Nan ; Huang, Ziqiang
Author_Institution :
Res. Inst. Electron. Sci. & Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Calculation of the LCD director and transmission based on the continuous elastic theory, difference iterative method, and the Berreman´s 4×4 matrix method is shown. The realization of this procedure is in Visual C + + to calculate the characters of the reflection-type and transmission-type of LCD. Sub-twisted nematic (SBTN) LCD is described which characteristics were not clear. Transmission has been calculated by using the software[1] with different parameters. The results of the contrast - viewing angle curves show that: the SBTN liquid crystal display can achieve wide prospective. We found the optimal setting parameters: the azumith is 75°, Δnd = 0.19μm, p0 = 5 μm and the off-axis angle is 0 ° to achieve wide prospective from -85 ° to 85° in the horizontal direction. When the voltage is 0V, SBTN is transparent. When the the voltage is 3.5V, SBTN is opaque. Of course, the azimuth from 60° to 90° can also be used to obtain wide prospective when Δnd and p0 are chosen properly.
Keywords :
C++ language; iterative methods; light reflection; liquid crystal displays; Berreman 4×4 matrix method; LCD director; LCD reflection-type; LCD transmission-type; SBTN LCD; SBTN liquid crystal display; Visual C + +; continuous elastic theory; contrast - viewing angle curves; difference iterative method; off-axis angle; optimal setting parameter; subtwisted nematic LCD; view angle characters; Azimuth; Glass; Liquid crystal displays; Reflection; Software; Transmission line matrix methods; Berreman´s 4×4 matrix; SBTNT; difference iterative method; director; transmission;
Conference_Titel :
Broadband Network and Multimedia Technology (IC-BNMT), 2011 4th IEEE International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-61284-158-8
DOI :
10.1109/ICBNMT.2011.6155956
