The Binem display: a nematic bistable device switched by surface anchoring breaking

Philippe Martinot-Lagarde; Ivan N. Dozov

doi:10.1117/12.482772

30 April 2003 The Binem display: a nematic bistable device switched by surface anchoring breaking

Philippe Martinot-Lagarde, Ivan N. Dozov

Proceedings Volume 5003, Liquid Crystal Materials, Devices, and Applications IX; (2003) https://doi.org/10.1117/12.482772
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

For mobile devices, permanent image displays are very attractive. We present one: the Binem® display which is close to appear on the market. A first demonstrator was shown at SID’ 97. An important research and development work has been made in the Paris-Sud University and in Nemoptic to increase the temperature domain and define industrial processes to realise mean size displays. The Binem uses two equal lower energy states of a chiral nematic liquid crystal. The molecules are oriented almost parallel to the cell plates by monostable surface treatments. One state (U) is uniform, the other (T), is twisted by 180°.To switch, a high field pulse orients the molecules on one of the plate perpendicular to it: the anchoring is broken. After the pulse, this state is unstable, the molecules on the plate will relax to the anchoring orientation. If they fall in one direction the U state builds, if they fall in the opposite direction the T state is realized. The fall time of the pulse and the pretilts on the two plates control this process. We explain the mechanism of switching by surface anchoring breaking and the obtained display performances.

Citation Download Citation

Philippe Martinot-Lagarde and Ivan N. Dozov "The Binem display: a nematic bistable device switched by surface anchoring breaking", Proc. SPIE 5003, Liquid Crystal Materials, Devices, and Applications IX, (30 April 2003); https://doi.org/10.1117/12.482772

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available