11.1: Invited Paper: Review of Viewing Angle Compensation of TN‐Mode LCDs Using WV Film

We developed WV films for TN-mode LCDs, which optimized optical parameters of the polymerized discotic material (PDM) layer and cellulose triacetate (CTA). We will review the development concept of WV film and realization of its concept before now and from now. Especially the discotic molecular alignment control enabled us to improve the contrast ratio at oblique viewing angles of TN-mode LCDs. In addition, color shifts at oblique angles are important for large screen size TN-mode LCD monitors and LCD TV sets. To improve this color shift problem, we have developed new technologies.