The devil is in the detail Testing of electroluminescence film Printing of conductive lines Testing of electrochromic display Fuse Box Production of the pages Ducky In The Dark

Description of the book - Frontcover

Frontcover - Design
Frontcover - Conductive Lines
 

Page Content

On the front page the reader finds the book’s title and Ducky the duck with an illuminated green head lamp. There is also a QR code integrated in the university's logo. The information of the code is the homepage of the interactive book. It contains the information of Behind the Book.

Interaction between Book and Reader

Ducky the duck and especially the green lamp in Ducky's head lamp shall attract potential readers. The lamp in the book's cover works as eye-catcher and demonstrates that this is not a normal but an interactive book containing printing electronics on almost every double page. The reader needs a smart phone containing a datamatrix code app, for example Barcode.

The Printed Electronic Elements Behind

The OLED is connected to a battery charger and the rechargeable batteries. The battery charger is powered by RFID and contains also a printed capacitor, resistant and inductor.
In addition to these printed components a conventional diode is also used. The voltage of the RFID battery charge depends on the distance between the printed antenna and the reader. The battery drops the current to a defined level and protects the OLED from destruction by high voltage. The current lines are printed by inkjet printing.

Benefit of the Printed Electronic Elements

The OLED and the battery charger are very thin. Therefore their integration into the book’s cover is straight forward. In addition the power consumption of the OLED is very low and can attract potential readers for a long time. This time is enlarged by the energy harvesting of the RFID-battery charger. No wires to the book are required and the attracted reader can easily take up the book.