Patents by Inventor Jae-Min EUM

Jae-Min EUM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composition of piezoelectric material, method for fabricating the same, piezoelectric device, and display apparatus comprising piezoelectric device
    Patent number: 12471495
    Abstract: Compositions are disclosed that comprise a piezoelectric material according to Chemical Formula 1: (1?y)(NaaK1-a)(Nb1-x,Sbx)?ySrZrO3+n mol % CuO, wherein 0.01?y?0.10, 0.4?a?0.6, 0?x?0.06, and 0.5?n?1.5. The compositions can further comprise a first material, and a second material surrounded by the first material. A piezoelectric device is also described, which includes a piezoelectric device layer including a composition of Chemical Formula 1, and having a first material layer and a second material layer surrounded by the first material layer; a first electrode part disposed on a first surface of the piezoelectric device layer; and a second electrode part disposed on a second surface facing the first surface.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: November 11, 2025
    Assignees: LG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: YongWoo Lee, Chiwan Kim, Yong-Su Ham, YuSeon Kho, Seunghyun Sung, Sahn Nahm, Dae-Su Kim, Su-Hwan Go, Jae-Min Eum, Ho-Sung Shin
  • COMPOSITION OF PIEZOELECTRIC MATERIAL, METHOD FOR FABRICATING THE SAME, PIEZOELECTRIC DEVICE, AND DISPLAY APPARATUS COMPRISING PIEZOELECTRIC DEVICE
    Publication number: 20220199896
    Abstract: Compositions are disclosed that comprise a piezoelectric material according to Chemical Formula 1: (1?y)(NaaK1-a)(Nb1-x,Sbx)-ySrZrO3+n mol % CuO, wherein 0.01?y?0.10, 0.4?a?0.6, 0?x?0.06, and 0.5?n?1.5. The compositions can further comprise a first material, and a second material surrounded by the first material. A piezoelectric device is also described, which includes a piezoelectric device layer including a composition of Chemical Formula 1, and having a first material layer and a second material layer surrounded by the first material layer; a first electrode part disposed on a first surface of the piezoelectric device layer; and a second electrode part disposed on a second surface facing the first surface.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 23, 2022
    Applicants: LG DISPLAY CO., LTD., KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: YongWoo LEE, Chiwan KIM, Yong-Su HAM, YuSeon KHO, Seunghyun SUNG, Sahn NAHM, Dae-Su KIM, Su-Hwan GO, Jae-Min EUM, Ho-Sung SHIN