(2025.12.22) 박칠근, 조병권, 최원석, 장원재 “디스플레이 장치” 10-2904188 

(2025.12.09) Wonjae Chang, Jinsung Kim, Byungjun Kang, Myoungsoo Kim, Junghoon Kim, “Inkjet head device” US12491717B2 

(2025.10.02) 박칠근, 장원재, 김정훈, “반도체 발광소자 및 이를 포함하는 디스플레이 장치” 10-2870233 

(2025.08.26) Wonjae Chang, Chilkeun Park, Jaewon Chang, “Display device” US12402450B2 

(2025.08.13) CHANG, Wonjae, KO, Jisoo, YANG, Hyeyoung, CHO, Hyunwoo “DISPLAY DEVICE USING MICRO LED AND MANUFACTURING METHOD THEREFOR” EP4020568B1 

(2025.07.28)김명수, 김진성, 장원재, 강병준, 김정훈, “디스플레이 장치” 10-2840659 

(2025.07.10) 김명수, 문성현, 고지수, 김정섭, 심봉주, 장원재, ” 마이크로 LED를 이용한 디스 플레이 장치 및 이의 제조 방법” 10-2834303 

(2025.04.28) 장원재, 심봉주, 김건호 “마이크로 LED와 관련된 디스플레이 장치 및 이의 제조 방법” 10-2802778 

(2025.03.18) Jisoo Ko, Hyeyoung Yang, Wonjae Chang, Hyunwoo Cho “Display device using semiconductor lightemitting element and manufacturing method therefor” US12255187B2 

(2025.03.14) 장원재, 박칠근, 장재원, “디스플레이 장치” 10-2783689 

(2025.03.04) Wonjae Chang, Jisoo Ko, Hyeyoung Yang, Hyunwoo Cho “Display device using micro LED having outward protrusion for assembly and manufacturing method therefor” US12243964B2 

(2025.01.09) 장원재, 고지수, 양혜영, “마이크로 LED를 이용한 디스플레이 장치 및 이의 제조 방법” 10-2754831 

(2024.09.23) Hyunwoo Cho, Bongchu Shim, Hyeyoung Yang, Jisoo Ko, Wonjae Chang “Method for manufacturing display device, and substrate for manufacturing display device” US012080580B2

(2024.11.06) 고지수, 양혜영, 장원재, 조현우, “반도체 발광 소자를 이용한 디스플레이 장치 및 그 제조 방법” 10-2728384

(2024.12.02) 장원재, 고지수, 양혜영, 조현우, “마이크로 LED를 이용한 디스플레이 장치 및 이 의 제조 방법” 10-2738655

(2025.12.11) 장원재, 김진성, 강병준, 김명수, 김정훈 “잉크젯 헤드 장치” 10-2900571

(2023) Wonjae Chang, Junjub Kim, Myoungsoo Kim, Min Woo Lee, Chung Hyun Lim, Gunho Kim, Sunghyun Hwang, Jeeyoung Chang, Young Hwan Min, Kiseong Jeon, Soohyun Kim, Yoon-Ho Choi, Jeong Soo Lee, “Concurrent self-assembly of RGB microLEDs for next-generation displays” Nature. 617, 287-291

(2023.01.25) KIM, Myoungsoo, JEON, Kiseong, KIM, Soohyun, KIM, Gunho, CHANG, Wonjae, LEE, Minwoo, KIM, Jungsub, “DISPLAY DEVICE COMPRISING SEMICONDUCTOR LIGHT-EMITTING ELEMENT” WO 2024/019571A1

(2025.03.04) Wonjae Chang, Jisoo Ko, Hyeyoung Yang, Hyunwoo Cho, “Display device using micro LED having outward protrusion for assembly and manufacturing method therefor” US12243964B2

(2025.03.11) CHANG WONJAE, HWANG SUNG-HYUN, LIM CHUNG-HYUN, LEE MIN-WOO, KIM MYOUNG-SOO “Semiconductor light emitting device for display pixel and display apparatus including same” CN119604976A

(2023.07.20) KIM, Myoungsoo, JEON, Kiseong, KIM, Soohyun, KIM, Gunho, CHANG, Wonjae, LEE, Minwoo, KIM, Jungsub, “DISPLAY DEVICE COMPRISING SEMICONDUCTOR LIGHT-EMITTING ELEMENT” EP4560691A1,

(2023.07.20) KIM MYOUNG-SOO, JEON KI-SEONG, KIM SU-HYUN, KIM GUN-HO, CHANG WONJAE, LEE MINWOO, KIM JUNG-SUB “Display device including semiconductor light emitting device” CN 119768911A

(2023.07.20) CHANG, Wonjae, HWANG, Sunghyun, LIM, Chunghyun, LEE, Minwoo, KIM, Myoungsoo “SEMICONDUCTOR LIGHT-EMITTING DEVICE FOR DISPLAY PIXELS, AND DISPLAY APPARATUS COMPRISING SAME” WO 2024/019572A1

(2023.07.20) CHANG, Wonjae, HWANG, Sunghyun, LIM, Chunghyun, LEE, Minwoo, KIM, Myoungsoo “SEMICONDUCTOR LIGHT-EMITTING DEVICE FOR DISPLAY PIXELS, AND DISPLAY APPARATUS COMPRISING SAME” EP4560692A1

(2023.07.20) Wonjae CHANG, Sunghyun HWANG, Chunghyun LIM, Minwoo LEE, Myoungsoo KIM, “ SEMICONDUCTOR LIGHT EMITTING DEVICE FOR DISPLAY PIXEL AND DISPLAY DEVICE INCLUDING THE SAME” US20240030182A1

(2023.07.20) 김명수, 전기성, 김수현, 김건호, 장원재, 이민우, 김정섭 “반도체 발광소자를 포 함하는 디스플레이 장치” 10-2025-7002199

(2023.07.20) 장원재, 황성현, 임충현, 이민우, 김명수, “디스플레이 화소용 반도체 발광소자 및 이를 포함하는 디스플레이 장치” 10-2025-7002198

(2022.02.01) Jungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim, “Solar cell and method for manufacturing the same” US11239379B2

(2022.05.10) 장원재, 김성진, 안준용, 정주화, “태양 전지 및 이의 제조 방법” 10-2397970

(2022.10.04) Wonjae Chang, Sungjin Kim, Juhwa Cheong, Junyong Ahn, “Solar cell and method of manufacturing the same” US11462654B2

(2021.02.18) 장원재, 안준용, 이현호, “태양 전지용 실리콘층 증착 장비” 10-2219785

(2021. 02.23) 조현우, 심봉주, 고지수, 양혜영, 장원재, “디스플레이 장치의 제조방법 및 디스 플레이 장치 제조를 위한 기판” 10-2221470

(2021.06.28) 장원재, 김성진, 정주화, 안준용, “태양 전지 및 이의 제조 방법” 10-22722433

(2021.04.06) Wonjae Chang, Junyong Ahn, Hyunho Lee, “Chemical vapor deposition equipment for solar cell and deposition method thereof” US10971646B2

(2021.09.28) Jungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim, “Solar cell and method for manufacturing the same” US11133426B2

(2021.04.06) Wonjae Chang, Junyong Ahn, Hyunho Lee, “Chemical vapor deposition equipment for solar cell and deposition method thereof” US10971646B2

(2021.07.05) KIM, Jinsung, CHANG, Wonjae, CHOI, Wonseok, “SEMICONDUCTOR LIGHT-EMITTING ELEMENT, AND DISPLAY DEVICE” WO 2023/282365A1

(2021.07.05) Jinsung KIM, Wonjae CHANG, Wonseok CHOI “SEMICONDUCTOR LIGHT-EMITTING ELEMENT, AND DISPLAY DEVICE” US20240322084A1

(2021.07.05) 김진성, 장원재, 최원석 “반도체 발광 소자 및 디스플레이 장치” 10-2024-0021192

(2021.07.21) Chilkeun PARK, Byoungkwon CHO, Wonseok CHOI, Wonjae CHANG, “DISPLAY DEVICE” US20240250065A1

(2021. 07.21) PARK, Chilkeun, CHO, Byoungkwon, CHOI, Wonseok, CHANG, Wonjae, “DISPLAY DEVICE” WO2023/003049A1

(2021.07.21) Chilkeun PARK, Byoungkwon CHO, Wonseok CHOI, Wonjae CHANG “DISPLAY DEVICE” US20240250065A1

(2021.08.31) 하정민, 최형욱, 장원재, “태양 전지”, 10-2298442,

(2021.09.17) KIM, Dohan, CHOI, Wonseok, CHANG, Wonjae, KIM, Jinsung, “DISPLAY DEVICE” WO 2023/042946A1

(2021.09.17) Dohan KIM, Wonseok CHOI, Wonjae CHANG “DISPLAY DEVICE” US20240387492A1

(2021.09.17) 김도한, 최원석, 장원재, 김진성, “디스플레이 장치”, 10-2024-7009468

(2021.11.12) CHANG, Wonjae, PARK, Chilkeun, CHANG, Jaewon, “DISPLAY DEVICE” WO2023/085473A1

(2020.01.02) CHANG, Wonjae, KIM, Sungjin, DO, Younggu, CHEONG, Juhwa, AHN, Junyong, CHO, Haejong, KO, Jisoo, “SOLAR CELL PREPARATION METHOD” WO 2020/145568A1

(2020.01.31) Wonjae CHANG, Bongchu SHIM, Gunho KIM “ DISPLAY DEVICE RELATED TO MICRO-LED AND MANUFACTURING METHOD THEREFOR” US20230059135A1

(2020.01.31) CHANG, Wonjae, SHIM, Bongchu, KIM, Gunho, “DISPLAY DEVICE RELATED TO MICRO-LED AND MANUFACTURING METHOD THEREFOR” WO 2021/117979A1

(2020.01.31) CHANG, Wonjae, SHIM, Bongchu, KIM, Gunho, “DISPLAY DEVICE RELATED TO MICRO-LED AND MANUFACTURING METHOD THEREFOR” EP4075499A1

(2020.02.11) CHO, Hyunwoo, SHIM, Bongchu, YANG, Hyeyoung, KO, Jisoo, CHANG, Wonjae, “METHOD FOR MANUFACTURING DISPLAY DEVICE, AND SUBSTRATE FOR MANUFACTURING DISPLAY DEVICE” WO 2021/025249A1

(2020.02.11) CHO, Hyunwoo, SHIM, Bongchu, YANG, Hyeyoung, KO, Jisoo, CHANG, Wonjae “METHOD FOR MANUFACTURING DISPLAY DEVICE, AND SUBSTRATE FOR MANUFACTURING DISPLAY DEVICE” EP4012770A1,

(2020.02.18) Wonjae Chang, Sungjin Kim, Juhwa Cheong, Junyong Ahn, “Solar cell and method of manufacturing the same” US10566487B2

(2020.03.11) CHEONG, Juhwa, AHN, Junyong, CHANG, Wonjae, KIM, Jaesung “METHOD OF MANUFACTURING SOLAR CELL” EP3200243B1

(2020.04.09) KIM, Sungjin, CHEONG, Juhwa, CHOI, Hyungwook, CHANG, Wonjae, “SOLAR CELL AND MANUFACTURING METHOD THEREFOR” EP4002495A2

(2020.04.09) KIM, Sungjin, CHEONG, Juhwa, CHOI, Hyungwook, CHANG, Wonjae, “SOLAR CELL AND MANUFACTURING METHOD THEREFOR” WO2021/015395A2

(2020.04.09) KIM SUNG-JIN, CHEONG JUHWA, CHOI HYOUNGWOOK, CHANG WONJAE “Solar cell and manufacturing method thereof” CN114127961A

(2020.04.23) 정주화, 김재성, 안준용, 이현호, 장원재, “태양전지의 제조 방법” 10-2106071

(2020.04.29) Sungjin KIM, Juhwa CHEONG, Hyungwook CHOI, Wonjae CHANG “SOLAR CELL AND MANUFACTURING METHOD THEREFOR” US20220262967A1

(2020.06.19) 안준용, 장원재, 박상욱, 정주화, “태양 전지 및 이의 제조 방법” 10-2126851

(2020.09.28) Chilkeun PARK, Wonjae CHANG, Junghoon KIM, “SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND DISPLAY DEVICE COMPRISING SAME” US20230335674A1

(2020.09.28) PARK, Chilkeun, CHANG, Wonjae, KIM, Junghoon, “SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND DISPLAY DEVICE COMPRISING SAME” WO 2022/065557A1

(2020.10.13) Myoungsoo KIM, Jinsung KIM, Wonjae CHANG, Byungjun KANG, Junghoon KIM “DISPLAY DEVICE” US20230378141A1

(2020.10.13) KIM, Myoungsoo, KIM, Jinsung, CHANG, Wonjae, KANG, Byungjun, KIM, Junghoon, “DISPLAY DEVICE“ WO2022080514A1

(2020.10.13) CHANG, Wonjae, KIM, Jinsung, KANG, Byungjun, KIM, Myoungsoo, KIM, Junghoon “LIGHTEMITTING ELEMENT RECOVERY DEVICE AND LIGHT-EMITTING ELEMENT RECOVERY METHOD USING SAME” WO2022/080513A1

(2020.10.14) HA, Jungmin, KIM, Sungjin, CHEONG, Juhwa, AHN, Junyong, CHOI, Hyungwook, CHANG, Wonjae, KIM, Jaesung,“SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME” EP3509112B1

(2020.11.06) CHANG, Wonjae, KIM, Jinsung, KANG, Byungjun, KIM, Myoungsoo, KIM, Junghoon, “INKJET HEAD DEVICE” WO2022097787 A1

(2019) W. Chang. Determination of Strain Fields on Two-Dimensional Image using STC (Strain Tensor usng Computational Fourier transform moire) method. Comput. Mater. Sci. 164, 153-157

(2019.09.18) KIM, Myoungsoo, MOON, Sunghyun, KO, Jisoo, KIM, Jungsub, SHIM, Bongchu, CHANG, Wonjae “ DISPLAY DEVICE USING MICRO LED, AND MANUFACTURING METHOD THEREFOR” EP4033536A1

(2019.09.18) KIM, Myoungsoo, MOON, Sunghyun, KO, Jisoo, KIM, Jungsub, SHIM, Bongchu, CHANG, Wonjae “DISPLAY DEVICE USING MICRO LED, AND MANUFACTURING METHOD THEREFOR” WO 2021/054491 A1

(2019.09.18) Myoungsoo KIM, Sunghyun MOON, Jisoo KO, Jungsub KIM, Bongchu SHIM, Wonjae CHANG, “ DISPLAY DEVICE USING MICRO LED, AND MANUFACTURING METHOD THEREFOR” US20220367774A1

(2019.08.21) CHANG, Wonjae, KO, Jisoo, YANG, Hyeyoung, CHO, Hyunwoo, “DISPLAY DEVICE USING MICRO LED AND MANUFACTURING METHOD THEREFOR” WO 2021/033801A1

(2019.08.21) CHANG, Wonjae, KO, Jisoo, YANG, Hyeyoung, “DISPLAY DEVICE USING MICRO LED, AND MANUFACTURING METHOD THEREFOR” EP4020567A1

(2019.08.11) Wonjae CHANG, Jisoo KO, Hyeyoung YANG, “DISPLAY DEVICE USING MICRO LED, AND MANUFACTURING METHOD THEREFOR” US20220254961A1

(2019.08.01) KO, Jisoo, YANG, Hyeyoung, CHANG, Wonjae, CHO, Hyunwoo, “DISPLAY DEVICE USING SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND MANUFACTURING METHOD THEREFOR” EP4002648A1

(2019.08.01) KO, Jisoo, YANG, Hyeyoung, CHANG, Wonjae, CHO, Hyunwoo, “DISPLAY DEVICE USING SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND MANUFACTURING METHOD THEREFOR” WO 2021/015350A1

(2019.07.17) CHANG, Wonjae, AHN, Junyong, LEE, Hyunho, “CHEMICAL VAPOR DEPOSITION EQUIPMENT FOR SOLAR CELL AND DEPOSITION METHOD THEREOF” EP3599290A3

(2019.06.17) Juhwa CHEONG, Junyong AHN, Wonjae CHANG, Jaesung KIM “METHOD OF MANUFACTURING SOLAR CELL” US20190305171A1

(2019.06.17) Myoungsoo KIM, Sunghyun MOON, Jisoo KO, Jungsub KIM, Bongchu SHIM, Wonjae CHANG Juhwa CHEONG, Junyong AHN, Wonjae CHANG, Jaesung KIM, “METHOD OF MANUFACTURING SOLAR CELL” US20190305171A1

(2019.05.17) Jungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim “SOLAR BATTERY AND METHOD FOR MANUFACTURING THE SAME” JP6526119B2

(2019.03.27) HA, Jungmin, KIM, Sungjin, CHEONG, Juhwa, AHN, Junyong, CHOI, Hyungwook, CHANG, Wonjae, KIM, Jaesung, “ SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME” EP3026713B1

(2019.03.12) Jungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim,“Solar cell and method for manufacturing the same” US10230009B2

(2019.02.25) CHANG, Wonjae, KO, Jisoo, YANG, Hyeyoung, “DISPLAY DEVICE USING MICRO LED, AND MANUFACTURING METHOD THEREFOR” WO 2021/033802A1

(2019. 02.11) CHANG WONJAE, AHN JUNYONG, LEE HYUNHO, “CHEMICAL VAPOR DEPOSITION EQUIPMENT FOR SOLAR CELL” CN110777362A

(2020.11.16) HA, Jungmin, KIM, Sungjin, CHEONG, Juhwa, AHN, Junyong, CHOI, Hyungwook, CHANG, Wonjae, KIM, Jaesung “SOLAR BATTERY AND METHOD FOR MANUFACTURING THE SAME” JP6795653B2

(2017.12.05) Juhwa Cheong, Junyong Ahn, Wonjae Chang, Jaesung Kim, “Method of manufacturing solar cell” US010367115B2

(2018.08.14) Juhwa Cheong, Junyong Ahn, Wonjae Chang, Jaesung Kim “Method of manufacturing solar cell” US010050170B2

(2018.07.03) Jungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim, “Solar cell and method for manufacturing the same” US10014419 B2

(2017) W. Chang. Investigation of Strain Field on a Misfit Dislocation in a Strained Si Layer Using the CFTM method. J. Korean Inst. Electr. Electron. Mater. Eng. 30, 535-539

(2017) W. Chang. Quantitative Measurements of Strain in Tensile Strained Si on Si0.55Ge0.45. J. Korean Institute of Information Technology. 15, 155-163

(2017.12.04) 김진성, 장원재, 최영호, “태양전지의 제조방법’ 10-1788012 (2017.10.13) 이현호, 장원재, 안준용, “태양 전지용 다결정 실리콘층 증착 장비” 10-1806966

(2017.10.06) Jungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim, “SOLAR BATTERY AND METHOD FOR MANUFACTURING THE SAME” JP6219913B2

(2017.08.01) Jungmin Ha, Sungjin Kim, Juhwa Cheong, Junyong Ahn, Hyungwook Choi, Wonjae Chang, Jaesung Kim, “Solar cell and method for manufacturing the same” US9722104B2

(2017.01.31) 김재성, 정주화, 안준용, 장원재, “태양 전지 및 이의 제조 방법” 10-1702953

(2017. 01.24) CHEONG JUHWA, AHN JUNYONG, CHANG WONJAE, KIM JAESUNG, “Method of manufacturing solar cell” CN110061096A

(2017. 01.24) CHEONG JUHWA, AHN JUNYONG, CHANG WONJAE, KIM JAESUNG, “Method of manufacturing solar cell” CN107026218A

(2016.06.29) CHANG, Wonjae, KIM, Sungjin, CHEONG, Juhwa, AHN, Junyong, “SOLAR CELL AND METHOD OF MANUFACTURING THE SAME” EP3113234A1

(2016.06.08) 장원재, 하정민, 김성진, 최형욱, “태양 전지” 10-1630526

(2016.06.07) 장원재, 안준용, 정주화, “태양 전지” 10-1630061

(2015.11.30) HA JUNGMIN, KIM SUNGJIN, CHEONG JUHWA, AHN JUNYONG, CHOI HYUNGWOOK, CHANG WONJAE, KIM JAESUNG, “Solar cell” CN109037359A

(2015.11.30) HA JUNGMIN, KIM SUNGJIN, CHEONG JUHWA, AHN JUNYONG, CHOI HYUNGWOOK, CHANG WONJAE, KIM JAESUNG, “Solar cell and method for manufacturing same” CN105655427A

W. Chang. 태양전지 소개 및 고효율 셀 제작 현황. 그린에너지 (태양광) 전문가 초청 공동 세미나, March (2014). 주최: 산업통상자원부, 한국산업기술진흥원 대경지역 사업평가원

(2011) W. Chang and T.D. Brown. Reliability of the CFTM and GPA methods for strain analysis at ultra-thin layers. Micron. 42, 392-400

W. Chang and T.D. Brown, “Effects of Lattice Spacing on Strain Analysis using Phase Technique,” Microscopy and Microanalysis 16, 1480 (2010), Presentation at 5th of August.

(2009) Chang and T.D. Brown, “ Analysis of strain in ultra-thin layers using moire method,” AVS-MI Chapter Spring Symposium, Michigan State University, East Lansing, MI, 21 May

(2008) W. Chang and T.D. Brown, “Phosphorus diffusion and strain on GaAsP/GaAs heterostructrues,” poster, AVS-MI Chapter Spring Symposium, University of Toledo, Toledo, OH, 28 May

(2008) W. Chang and T.D. Brown, “Investigation of phosphorus in-diffusion and strain in GaAsP/GaAs using high-resolution transmission electron microscopy,” The 68th Physical Electronics Conference, Presentation at 25 June

(2001) W. Chang, et al. The process Development of Plasma Nitridation as a Sub-Electrode for Ta2O5 and Al2O3 Capacitors. Samsung technical paper.