Invention Grant
- Patent Title: Transparent conductive coatings based on metal nanowires and polymer binders, solution processing thereof, and patterning approaches
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Application No.: US14087669Application Date: 2013-11-22
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Publication No.: US11274223B2Publication Date: 2022-03-15
- Inventor: Xiqiang Yang , Ying-Syi Li , Yungyu Huang , Chris Scully , Clifford M. Morris , Ajay Virkar
- Applicant: C3Nano Inc.
- Applicant Address: US CA Hayward
- Assignee: C3Nano Inc.
- Current Assignee: C3Nano Inc.
- Current Assignee Address: US CA Hayward
- Agency: Christensen, Fonder, Dardi
- Agent Elizabeth A. Gallo; Peter S. Dardi
- Main IPC: C09D11/52
- IPC: C09D11/52 ; H05K1/09 ; C09D11/08 ; C09D11/10 ; H05K3/10 ; C09D11/38 ; H05K3/12

Abstract:
Polymer binders, e.g., crosslinked polymer binders, have been found to be an effective film component in creating high quality transparent electrically conductive coatings or films comprising metal nanostructured networks. The metal nanowire films can be effectively patterned and the patterning can be performed with a high degree of optical similarity between the distinct patterned regions. Metal nanostructured networks are formed through the fusing of the metal nanowires to form conductive networks. Methods for patterning include, for example, using crosslinking radiation to pattern crosslinking of the polymer binder. The application of a fusing solution to the patterned film can result in low resistance areas and electrically resistive areas. After fusing, the network can provide desirable low sheet resistances while maintaining good optical transparency and low haze. A polymer overcoat can further stabilize conductive films and provide desirable optical effects. The patterned films can be useful in devices, such as touch sensors.
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