Changzhou Institute of Printed Electronics Industry

Printed and flexible electronics is an emerging clean-tech electronics technology enabled by the solution processable functional materials and optimized high-throughput printing process. Comparing to wafer fab based traditional microelectronics manufacturing, graphic arts printing technology promises low infrastructure cost, high throughput, roll-to-roll/sheet-fed and large area enabled manufacturing. The solution processable functional inks allow the use of printing technology to fabricate functional films, large area electronics components and integrated circuits. These developments have led to variety of low cost electronics components, sensors, large area display and lighting, flexible photovoltaic, and intelligent packaging applications.

Fuse type write-once-read-many (WORM) memories are fabricated based on silver nanowire (AgNW) meshes using simple dispensing and bar-coating processes without needing precise patterning. Compared to previous work, the AgNW mesh WORM memories can be programmed at lower voltage (2.3 V) and current (<10 mA), and thus through near field communication by smart phones. The devices present stable “unwritten” and “written” states for reading operations of 6000 times. Finally, 4-bit WORM memories are fabricated and attached on a packaging box with programming and reading operations by a smart phone to verify its potential for practical applications.