Printable Electrochromic Device Uniform Color Segmentation

The device is divided into multiple independent micro-electrochromic units, each with its own local electrodes. This segmentation allows each unit to have uniform impedance characteristics while the collection of units provides the overall device function, resolving the contradiction between simplified structure and uniform color change.

Each micro-electrochromic unit has locally optimized electrode configuration with electrodes positioned to create uniform electric fields within that specific unit. This local quality optimization ensures uniform color change in each unit while maintaining overall device simplicity.

A solid polymer electrolyte film is used to replace liquid electrolytes, providing both the necessary ionic conductivity for electrochromic performance and physical containment to prevent leakage. The film structure maintains reliability while eliminating the harmful leakage effect.

The device uses a composite structure combining polymer electrolyte materials that provide both ionic transport functionality and mechanical integrity. This composite approach maintains electrochromic performance while preventing electrolyte leakage.

The thin PV film is segmented into multiple small active areas distributed across the device. This segmentation reduces the probability of short circuits while maintaining overall transparency, as the non-conductive spacing between segments prevents current leakage paths.

Protective encapsulation layers are applied to the thin PV film to provide electrical isolation and prevent short circuits while maintaining optical transparency. The encapsulation film protects the thin active layer without significantly reducing transparency.