Journal
LIQUID CRYSTALS
Volume 41, Issue 1, Pages 101-105Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2013.837517
Keywords
graphene; transmittance; transparent electrodes
Funding
- Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Education, Science and Technology, Korea [2011-0031640]
- National Research Foundation of Korea [NRF-2013R1A1A1A05007934]
- National Research Foundation of Korea [2011-0031640, 22A20130000119, 2013R1A1A1A05007934] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We report the use of graphene as a highly transparent conductive film in liquid-crystal displays (LCDs). Graphene films were synthesised via chemical vapour deposition, transferred onto glass substrates, and then used to fabricate typical twisted nematic LCD cells. LCD cells using graphene as transparent electrodes exhibited optical transmittances 7.7% higher than LCD cells fabricated using conventional conducting layers based on indium tin oxide (ITO) films. The device characteristics of LCD cells based on graphene electrodes, such as threshold voltage and voltage holding ratio, were comparable to those of conventional LCD cells based on ITO electrodes. These results indicate that graphene is a promising transparent conductive film compared to ITO, yielding LCDs with significantly improved optical transmittance.
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