Universal interface for EC display devices, Prototype

http://www.inm-gmbh.de

Tel.: ++49 681 9300-394
Fax: ++49 681 9300-223

• Development of a universal PC and microcontroller interface for electrochromic display devices

Methods

• Utilization of integrated hybrid logic and power switching circuits
• Custom scalable row and line drivers
• Buffer circuit for use with PC printer ports

Results

• A prototype interface for use with large area electrochromic displays has been developed and successfully tested
• 12 lines, 12 rows (prototype), infinitely upgradable in steps of 8 rows or 8 lines
• Maximal display area 5 m² (prototype), randomly upscalable
• Integrated liquid crystal display for user information, regulated power supply for the electrochromic device

• Evaluation of electrochromic devices, including measurement of electrical characteristics
• Demonstration and field testing purposes in combination with large area electrochromic display devices

Benefits

• Compatibility with PC printer port and commercial microcontroller systems.
• EC power lines are galvanically insulated by reed relays, providing neglectable resistance and precise display testing
• For final applications, where reed relays are obsolete, the design concept allows miniaturization to fit the display frame