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http://dx.doi.org/10.5762/KAIS.2019.20.4.382

An Analysis of Patent Co-Classification Network for Exploring Core Technologies of Firms: An Application to the Foldable Display Sector  

Yun, Namshik (Department of Semiconductor-Display Science and Management, KOREATECH)
Ji, Ilyong (Department of Semiconductor-Display Science and Management, KOREATECH)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.4, 2019 , pp. 382-390 More about this Journal
Abstract
As there is severe competition in the global foldable display market, strategic technology planning is required. Patent analysis as a tool for technology planning has frequently been used due to data characteristics such as openness, formality, and detailed information. However, traditional patent analysis has various limitations such as quantitative approaches are limited in evaluating contents of patents and identifying core technologies of firms as they rely on number of patents, and qualitative approaches have time and cost problems as researchers have to investigate each patent on a case-by-case basis. In this research, we analyze core technologies of firms in the foldable display sector analyzing patent co-classification Network. Results show that the number of patent applications has rapidly increased since 2014, and 92% of these patents are held by two panel manufacturers, SDC and LGD, and two device manufacturers, SEC and LGE. Network analysis shows that the two panel manufacturers' core technologies are similar and two device manufacturers are notably different. This research provides implications to the sector. Moreover, this study provides unique results drawn from co-classification network analysis, and therefore, our research suggests patent co-classification analysis as an effective tool for technology planning.
Keywords
Patent Analysis; Co-Classification; IPC; Foldable Display; Technology Planning;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 ETNews. Foldable Display Market Prospect. ETNews [cited 30 August 2018], Available From: http://www.etnews.com/20181030000310 (accessed Feb. 22, 2019).
2 S. Son, J. Han, S. Jeong, K. Kim, J, Kim, C. Choi, S. Kim, R. Lim, Y. Kim, E. Ma, Development of Technology Planning Methodologies for Future Strategy, KISTEP, 2013.
3 S. Hong. The Magic of Patent Information. WIPO, Available From: https://www.wipo.int/sme/en/documents/patent_information_fulltext.html (accessed Feb. 22, 2019).
4 C. Park, "A Study on Analysis of R&D Activity with Patent Map", Journal of KIPS, Vol.13, No.3, pp.9-14, 2008.
5 K. Smith, "Measuring Innovation", In J. Fagerberg, D. C. Mowery, R. R. Nelson, The Oxford Handbook of Innovation. pp.148-177, Oxford University Press, 2005.
6 C. Son, "Study for Analyzing Defense Industry Technology using Datamining Technique: Patent Analysis Approach", Journal of the Korea Academia-Industrial Cooperation Society, Vol.19, No.10, pp.101-107, 2018. DOI: https://doi.org/10.5762/KAIS.2018.19.10.101
7 K. W. Seo. Development and Application of Technology Level Evaluation Research Methods Using Patent Information, KISTEP, 2011.
8 J-S. Noh, I. Ji, "A Comparative Analysis of Convergence Types and Technology Levels of Polymer Technologies in Korea and Other Advanced Countries: Utilizing Patent Information", Journal of The Korea Convergence Society, forthcoming. 2019.
9 S-H. Ju, H-J. Seo, "Study of the Effects of Co-Patent Network Factors on Technological Innovation: Focus on IT industry in Korea", Journal of Technology Innovation, Vol.25, No.4, pp.211-238, 2017. DOI: http://dx.doi.org/10.14383/SIME.2017.25.4.211   DOI
10 S. Lee, S. Chung, "Interaction between Innovation Actors in Innovation Cluster: A Case of Daedeok Innopolis ", Journal of Korea Technology Innovation Society, Vol.17, No.4, pp.820-844, 2014.
11 WIPO. Guide to International Patent Classification, World Intellectual Property Organization. WIPO. 2018.
12 K. Choo, "The Effect of a Co-invention Network on Inventive Productivity of a Firm's Prolific Inventor", The Journal of Intellectual Property, Vol.11, No.2, pp.183-222, 2016.   DOI
13 J. H. Jeong, "An Analysis of Spatial Determinants of Inventor Networks in Korea", Journal of the Economic Geographical Society of Korea, Vol.19, No.1, pp.1-17. 2016. DOI: http://doi.org/10.23841/egsk.2016.19.1.1   DOI
14 J. Y. Choi, Y. A. Cho, S. K. Jeong. Measuring Technological Convergence and Analyzing Diffusion Trend Using Patent Information. KIET, 2013.
15 B-K. Kim, I. Ji, J-Y. Og, H-J. Jeong. A Plan for Constructing and Supporting Science-based Business Cluster in the Base Zone of the International Science-Business Belt. MSIP. 2017.
16 T-Y. Park, H. Lim, I. Ji, "Identifying potential users of technology for technology transfer using patent citation analysis: a case analysis of a Korean research institute", Scientometrics, Vol.116, No.3, pp.1541-1558. 2018. DOI: https://doi.org/10.1007/s11192-018-2792-9   DOI
17 M. Kim, J. Park, Y. Lee, E. Heo, "Co-classification Analysis of Inter-disciplinarity of Solar Cell Research", New & Renewable Energy, Vol.7, No.1, pp.36-44, 20121.   DOI
18 R. J. W. Tijssen, "A Quantitative Assessment of Interdisciplianry Structures in Science and Technology: Co-classification Analysis of Energy Research", Research Policy, Vol.21, No.1, pp.27-44, 1992. DOI: https://doi.org/10.1016/0048-7333(92)90025-Y   DOI
19 S. Hinze, "Bibliographical Cartography of an Emerging Interdisciplinary Discipline: the Case of Bioelectronics", Scientometrics, Vol.29, No.3, pp.353-376, 1994. DOI: https://doi.org/10.1007/BF02033445   DOI
20 S-S. Lee. Network Analysis Methods. Nonhyung. 2013.
21 Newsis. Samsung Foldable Phones and 5G Phones, Save the Plumeting Smartphone Market. Newsis [cited 21 February 2019], Available From: http://www.newsis.com/view/?id=NISX20190220_0000564843 (accessed Feb. 22, 2019).
22 M. A. Schilling. Strategic Management of Technological Innovation, Mc-Growh Hill Korea. 2010.
23 J. Cho, S. Han, S. Jeon, The Direction of Form-Factor Innovation of Display, LG Economic Research Institute, 2017.
24 L. Kelion. Samsung Reveals Galaxy Fold and S10 5G. BBC News [cited 20 February 2019], Available From: https://www.bbc.com/news/technology-47277324 (accessed Feb. 22, 2019).