Title :
Achromatic supertwisted nematic LCD using birefringent film
Author :
Fukuda, I. ; Kotani, Yukeo ; Uchida, Tatsuo
Author_Institution :
Electron Device Syst. Res. Lab., Kanazawa Inst. of Technol., Japan
Abstract :
A novel achromatic supertwisted nematic (STN) cell with birefringent film, which is used to compensate the rotational dispersion of the STN-cell, is proposed, and optical properties of the cell are discussed. It is found from the numerical analysis using Oseen-Frank elastic theory and Berreman´s 4*4 matrix method that there are several solutions that yield high contrast ratio and color-tree background. This result is confirmed by experiment. The advantages of the cell are its light weight and good contrast ratio.<>
Keywords :
birefringence; liquid crystal displays; numerical analysis; Oseen-Frank elastic theory; achromatic supertwisted nematic cell; birefringent film; color-tree background; high contrast ratio; numerical analysis; optical properties; rotational dispersion; Birefringence; Degradation; Electron devices; Electron optics; Laboratories; Numerical analysis; Optical devices; Optical films; Optical polarization; Writing;
Conference_Titel :
Display Research Conference, 1988., Conference Record of the 1988 International
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/DISPL.1988.11299
