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Review of viewing‐angle compensation of TN‐mode LCDs using WV film
Author(s) -
Yasuda Shoji,
Ito Tadashi,
Oikawa Tokuju,
Ito Yoji,
Takahashi Yohei
Publication year - 2009
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/jsid17.4.377
Subject(s) - cellulose triacetate , viewing angle , liquid crystal display , materials science , optics , compensation (psychology) , mode (computer interface) , oblique case , realization (probability) , contrast ratio , optoelectronics , computer science , physics , polymer , psychology , composite material , linguistics , philosophy , statistics , mathematics , psychoanalysis , operating system
— Wide‐view (WV) films for TN‐mode LCDs, which optimize the optical parameters of the polymerized discotic material (PDM) layer and cellulose triacetate (CTA) have been developed. The development concept of the WV film and realization of its concept in the past and for the future will be reviewed. In particular, the discotic molecular alignment control enabled the improvement of the contrast ratio at oblique viewing angles of TN‐mode LCDs. In addition, color shifts at oblique angles are important for large‐screen TN‐mode LCD monitors and LCD‐TV sets. To improve the color‐shift problem, new technologies have been developed.