US 12,464,650 B2
Method and system for manufacturing flexible transparent conductive film with embedded metal material
Xiaoyang Zhu, Qingdao (CN); Ximeng Qi, Qingdao (CN); Hongbo Lan, Qingdao (CN); Hongke Li, Qingdao (CN); Zhenghao Li, Qingdao (CN); Quan Xu, Qingdao (CN); and Jiawei Zhao, Qingdao (CN)
Assigned to QINGDAO UNIVERSITY OF TECHNOLOGY, Shandong (CN); and QINGDAO 5D INTELLIGENT ADDITIVE MANUFACTURING TECHNOLOGY CO., LTD., Shandong (CN)
Appl. No. 17/640,371
Filed by QINGDAO UNIVERSITY OF TECHNOLOGY, Shandong (CN); and QINGDAO 5D INTELLIGENT ADDITIVE MANUFACTURING TECH, Shandong (CN)
PCT Filed Dec. 24, 2020, PCT No. PCT/CN2020/138898
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2022/110423, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 202011354856.0 (CN), filed on Nov. 26, 2020.
Prior Publication US 2023/0345641 A1, Oct. 26, 2023
Int. Cl. H05K 3/10 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); H05K 1/02 (2006.01)
CPC H05K 3/108 (2013.01) [B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); H05K 1/0274 (2013.01); H05K 1/028 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for manufacturing a film with an embedded metal material, comprising the steps of:
sequentially printing metal nanowire grids and metal grids with a large aspect ratio on a printing substrate using an electric field driven micro-nano 3D printing device with a printing needle, and forming a composite conductive electrode of the metal grids and the metal nanowire grids, wherein the printing needle used for electric field driven micro-nano 3D printing comprises a metal needle and an insulating tube, wherein the insulating tube sleeves the outside of the metal needle, the central axis of the metal needle and the central axis of the insulating tube are located on the same straight line, an outlet of the insulating tube is of a necking structure, and the inner diameter of the outlet of the necking structure is less than that of the metal needle; and
performing conductive treatment on the composite conductive electrode to obtain an electrode material; and embedding the electrode material into a photoresist, separating the photoresist embedded with the electrode material from the printing substrate, and removing the printing substrate to obtain a conductive film,
wherein the metal nanowire grids are formed by printing metal nanowires; the metal grids with a large aspect ratio are formed by printing nano metal paste, and the large aspect ratio is that the ratio range of the wire heights to the wire widths of the grid wires of the metal grids is 0.3-30.