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Demonstration of a technological prototype of an active‐matrix BiNem liquid‐crystal display
Author(s) -
Joly Stéphane,
Thomas Patrick,
Osterman Jesper,
Simon Arnaud,
Lallemant Sylvain,
Faget Luc,
Laffitte JeanDenis,
Irzyk Michael,
Madsen Louise,
Angelé Jacques,
Leblanc François,
MartinotLagarde Philippe
Publication year - 2010
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/jsid18.12.1033
Subject(s) - scrolling , bistability , liquid crystal display , polarizer , computer science , optics , backlight , active matrix , viewing angle , transmittance , computer graphics (images) , materials science , mode (computer interface) , liquid crystal , matrix (chemical analysis) , diffuser (optics) , optoelectronics , birefringence , physics , layer (electronics) , composite material , operating system , thin film transistor , light source
— The first implementation of active‐matrix addressing on a BiNem bistable nematic liquid‐crystal display has been demonstrated. Compared to previous passive‐matrix addressing, major improvements have been made for the bistable mode: a smoother image refreshment, shorter refreshing frame time compatible with that of high‐resolution e‐book displays, the use of a touch screen for interactive functions such as hand‐writing, a virtual keyboard, improved functionality for scrolling menus, partial refreshment, etc . On the same display but in the monostable mode, by using electrically controlled birefringence (ECB), the potential of displaying moving pictures at a rate of 25 images/sec, at an extended room temperature, has been demonstrated. In the ECB monostable mode, static images can be displayed down to −20°C. A new transflective single‐polarizer optical mode has been developed to optimize the indoor and outdoor readability of the display. By lowering the surface reflection and enhancing the panel transmission, a contrast ratio of 94:1 and a transmittance of 17% have been achieved.