Low-Cost Roll-to-Roll Electrophoretic Display Technology

Revolutionary cost-optimized electrophoretic displays for mass production using printed electrodes and binary microcapsules.

Ultra-Low Cost
Reflective Display

Technology Overview

A cost-optimized electrophoretic display designed for mass production using roll-to-roll printed electrodes and simplified addressing schemes.

Ultra-Low Cost

Eliminates complex backplanes and uses commodity printing inks and plastics for maximum cost reduction.

High Throughput

Designed for roll-to-roll manufacturing with minimal registration steps and single-pass lamination.

Zero Power Display

Reflective technology that maintains images without power, perfect for signage and labels.

Key Design Goals

Reduce per-unit material and process cost

Avoid active-matrix TFT backplanes

Enable high throughput roll-to-roll manufacturing

Provide acceptable contrast for signage and labels

System Architecture

Stack Overview

1

Top Protective Film

Thin PET or similar transparent protective layer

2

Capsule Sheet

Binary microcapsules in polymer matrix

3

Patterned Top Electrodes

Printed conductive traces segmented into columns

4

Bottom Common Electrode

Continuous foil or printed plane

5

Edge Driver Assembly

Low-cost driver ICs with welded connections

Electrical Addressing

  • Cluster columns with bipolar driver ICs

  • Two-step waveforms for particle movement

  • No per-pixel state memory required

  • Periodic reversal maintenance pulses

Core Advantages

  • Printed electrodes replace microfabrication

  • Single-particle binary capsules

  • Coarse cluster addressing reduces complexity

  • Single-pass lamination process

Manufacturing Process

Roll-to-roll production flow designed for maximum efficiency and minimum cost

Step 1: Bottom Electrode

Print bottom common electrode or laminate foil onto PET web

1
2

Step 2: Capsule Coating

Coat capsule-containing polymer matrix in single wide-slot die step

Step 3: Top Electrode Printing

Print patterned top electrodes with flexographic or gravure printing

3
4

Step 4: L