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Reduced residual DC voltages in LCDs by using fluorinated polyimides |
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| Authors: | Lu Lu Yi Huang Ke Zhang Na Liu Robert J Twieg Brian Auman Achintya Bhowmik Philip Bos |
| Affiliation: | 1. Kent State University, Liquid Crystal Institute and the Chemical Physics Interdisciplinary Program, Kent, OH 44242 USA.;2. Kent State University, Department of Chemistry, Kent, OH, USA.;3. Circle Research Laboratory, DuPont Electronic Technologies, Circleville, OH, USA.;4. Intel Corp., Santa Clara, CA, USA. |
| Abstract: | Abstract— The effect of a fluorinated alignment layer in reducing image retention in liquid‐crystal displays has been quantified. In our experiments, image retention is characterized by measuring the residual DC (RDC) value, which for both planar cells and vertical‐alignment cells are shown to be very small for a fluorinated alignment layer. The lowered dielectric constant of a fluorinated alignment layer is shown to be correlated with RDC improvement. A result of this work is the demonstration that fluorinated alignment layers have great potential to be used in low‐refresh‐rate LCDs for reducing power consumption. |
| Keywords: | Residual DC fluorinated polymide contact angle planar alignment low‐power display |