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Cong S, Cao Y, Fang X, Wang Y, Liu Q, Gui H, Shen C, Cao X, Kim ES, Zhou C. Carbon Nanotube Macroelectronics for Active Matrix Polymer-Dispersed Liquid Crystal Displays. ACS NANO 2016; 10:10068-10074. [PMID: 27763766 DOI: 10.1021/acsnano.6b04951] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Active matrix liquid crystal display (AMLCD) is the most widely used display technology nowadays. Transparent display is one of the emerging technologies to provide people with more features such as displaying images on transparent substrates and simultaneously enabling people to see the scenery behind the panel. Polymer-dispersed liquid crystal (PDLC) is a possible active matrix transparent display technology due to its high transparency, good visibility, and low power consumption. Carbon nanotubes (CNTs) with excellent mobility, high transparency, and room-temperature processing compatibility are ideal materials for the driver circuit of the PDLC display. Here, we report the monolithic integration of CNT thin-film transistor driver circuit with PDLC pixels. We studied the transmission properties of the PDLC pixels and characterized the performance of CNT thin-film transistors. Furthermore, we successfully demonstrated active matrix seven-segment PDLC displays using CNT driver transistors. Our achievements open up opportunities for future nanotube-based, flexible thin-film transparent display electronics.
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Affiliation(s)
- Sen Cong
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Yu Cao
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Xin Fang
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Yufeng Wang
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Qingzhou Liu
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Hui Gui
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Chenfei Shen
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Xuan Cao
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Eun Sok Kim
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
| | - Chongwu Zhou
- Ming Hsieh Department of Electrical Engineering and §Mork Family Department of Chemical Engineering and Materials Science, University of Southern California , Los Angeles, California 90089, United States
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Hunter JJ, Cookson CJ, Kisilak ML, Bueno JM, Campbell MCW. Characterizing image quality in a scanning laser ophthalmoscope with differing pinholes and induced scattered light. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. A, OPTICS, IMAGE SCIENCE, AND VISION 2007; 24:1284-95. [PMID: 17429474 DOI: 10.1364/josaa.24.001284] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We quantify the effects on scanning laser ophthalmoscope image quality of controlled amounts of scattered light, confocal pinhole diameter, and age. Optical volumes through the optic nerve head were recorded for a range of pinhole sizes in 12 subjects (19-64 years). The usefulness of various overall metrics in quantifying the changes in fundus image quality is assessed. For registered and averaged images, we calculated signal-to-noise ratio, entropy, and acutance. Entropy was best able to distinguish differing image quality. The optimum confocal pinhole diameter was found to be 50 microm (on the retina), providing improved axial resolution and image quality under all conditions.
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Affiliation(s)
- Jennifer J Hunter
- Department of Physics and Astronomy and School of Optometry, University of Waterloo, Canada
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