View : 643 Download: 0
Flicker-Free Fringe-Field Switching Liquid Crystal Display Operable at Extremely Low Frequencies for Power Saving
- Title
- Flicker-Free Fringe-Field Switching Liquid Crystal Display Operable at Extremely Low Frequencies for Power Saving
- Authors
- Choi, Jun-Chan; Lee, Jae-Won; Lee, Dong-Jin; Park, YungKyung; Kim, Hak-Rin
- Ewha Authors
- 박영경
- SCOPUS Author ID
- 박영경
- Issue Date
- 2021
- Journal Title
- ADVANCED ENGINEERING MATERIALS
- ISSN
- 1438-1656
1527-2648
- Citation
- ADVANCED ENGINEERING MATERIALS vol. 23, no. 9
- Keywords
- flicker-free; fringe-field switching liquid crystal mode; low-frequency driving; power saving
- Publisher
- WILEY-V C H VERLAG GMBH
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- A fringe-field switching (FFS) liquid crystal (LC) mode used with a negative dielectric LC (n-LC) that is operable at an extremely low-frequency signal voltage regime, without image flickering, is proposed. By doping charge-trapping fullerenes (doping concentration: 0.2 wt%) into a low-resistivity polyimide LC alignment layer of the FFS n-LC mode, the mobile ionic-charge density within the n-LC layer can be drastically decreased. Thus, excellent voltage-holding ratios of 98.24% and 87.91% are achievable in the proposed FFS n-LC mode at low operation frequencies of 0.5 Hz and 0.2 Hz, respectively, corresponding to the improvement rates of 155.69% and 1127.05% at each operation frequency, compared with the FFS n-LC mode without the fullerene doping case. The evaluation results by the modulation flicker level reveal that the operation frequency of the proposed device scheme can be decreased significantly (approximate to 0.2 Hz) without inducing the perceptible image-flickering problems.
- DOI
- 10.1002/adem.202100174
- Appears in Collections:
- 조형예술대학 > 색채디자인전공 > Journal papers
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML