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What You Should Know Before Using an E-Paper Display?

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Posted on 2025-12-26 14:51:38 | Show all floors |Read Mode
General GuidelinesUpdate Cycle Considerations
  • ePaper displays are suitable for update cycles ranging from tens of seconds to minutes
  • Most black-and-white ePaper screens have a fast refresh rate of 1.5-2.5 seconds
  • Ideal for applications where a static image is maintained without constant electricity

Temperature & Color Considerations
  • Multi-color ePaper displays cannot operate at sub-zero temperatures
  • For operation under 0°C, wide temperature (black and white) ePaper is the only suitable option
  • If multi-color display isn't essential, we recommend selecting monochrome display
  • Operating temperature can be broadened by adding heating film

Safe Handling Guidelines
  • Do not press the IC area or FPC-to-glass bonding area with your hands
  • When handling the display, hold it by the glass part and do not lift by the FPC
  • Turn off power before plugging or unplugging the ePaper display
  • Always use devices within the rated voltage and current limitations
  • Follow ESD-safe handling techniques and maintain 50-60% relative humidity
  • Wear gloves or finger cots to prevent contamination

Warning: Never remove flex cables without unlocking holding tabs. Violent removal can damage golden fingers.


The bending direction of FPC


FPC Connection



Handling & Operation PrecautionsAssembly Guidelines
  • Remove protective film from ePaper display prior to assembly
  • Handle displays with care to avoid excessive pressure during assembly
  • Implement strict measures to prevent static discharge (keep ESD below ±200V)
  • Limit load to less than 1kg to prevent damage to bonds

Operation Conditions
  • Avoid exposing the ePaper display to direct sunlight
  • Adhere strictly to provided specifications when designing driving circuits
  • Allow at least 180-second interval after completing a set of display updates
  • After every 5 partial updates, perform a full update to prevent ghosting
  • Set the display to deep sleep mode for long intervals between updates
  • FPC bending position should be 1.0-1.5mm away from glass edge


FPC Bending Position



Display Update Process



Best Practice: Perform a full update at least once every 24 hours for multi-color and full color ePaper displays.

Flexible ePaper Display Operation
  • The IC and surrounding areas are not flexible and should not be bent
  • Use gentle methods like suction cups when handling flexible displays
  • Both front and back of the display should be free from granular foreign objects
  • Operating and storage temperatures should not exceed 70℃
  • Current flexible displays are lightweight, space-saving, and less prone to breaking
  • Not recommended for use in curved areas as this increases damage risk

1.54inch Four-color Flexible Display


Designing the End-Customer ProductProduct Design Considerations
  • Use provided 3D files for optimal design when available
  • Ensure adequate slack for proper FPC insertion and routing
  • Avoid contamination of the "golden finger" area on flex cables
  • Design battery low power detection and auto-update to full white
  • Never apply pressure to the glass area of the display
  • The mid-frame material between the EPD module and system PCBA must be electrically conductive to mitigate EMI risks and other electromagnetic compatibility (EMC) issues

Connector & Cable Management
  • Use MOLEX original connectors for reliable electrical connections
  • Insert FPC cables squarely without causing buckling
  • Inspect after insertion to confirm proper assembly
  • Apply stiffening tape overlapping connector and flex cable


EMC Prevention





Connector Handling



Touch Screen Guidance
  • Never attempt to separate touch panel assemblies from displays
  • Small air bubbles indicate uneven forces being applied to the product
  • Avoid applying chemicals to capacitive touch panel surfaces
  • Ensure only the intended stylus is used for the touch panel
  • Avoid applying excessive force beyond normal expectations
  • Ensure hands are clean during operation to prevent recognition issues
   
Touch Screen


Storage Guidelines
  • Optimal Environment: Maintain 23±3°C temperature and 55±10% humidity
  • Orientation: Store with front facing up and flat, displaying a white pattern
  • Timely Use: Utilize displays as soon as possible after unpacking
  • Protection: Keep in original packaging until ready for installation
  • Long-term: For storage over 6 months, refresh display every 3 months
Storage Tip: Displaying a white pattern during storage prevents inerasable ghosting and maintains optimal performance.

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