“1.54" Ultra-Low-Power E-Paper Display: Sunlight-Visible, Zero
Static Power, Perfect for Miniature Wearables & IoT.”
This display excels where long battery life, outdoor readability,
and compact size are critical — replacing power-hungry LCDs in
resource-limited devices.
product details
| Product: | 1.54 Inch SPI EPD | Resolution: | 152x152 Dots Resolution |
| Pin Number: | 8 Pins | Interface: | SPI |
| Driver Element: | A-Si TFT Active Matrix | Display Mode: | AM EPD |
| Display Color: | Black+White | Optics: | All Viewing Angles |
| PCB Outline Dim.: | 32(H) X 50(V) X 2.2(D) Mm | Active Area: | 27.512(H) X 27.512(V) Mm |
| Pixel Pitch: | 181 X 181 (188dpi) Um | Compliance: | REACH & RoHS Compliant |
| Highlight: | 152x152 Dots E-Ink Display, 1.54" E-Paper Display, 1.5 Inch E-Ink
Display |
EPD-154BW is an active matrix electrophoretic display (AM EPD) with
SPI interface. This 1.54-inch e-ink display module has an effective
area of 152×152 pixels and can display images with 1-bit black and
white capability. This module is an electrophoretic display driven
by a TFT array. The integrated circuits include a gate driver,
source driver, MCU interface, timing controller, oscillator, and
other DC-DC, SRAM, LUT, VCOM. This module can be used in portable
electronic devices, such as electronic shelf label (ESL) systems.
machinery specification
| Parameter | Specifications | Unit | Remark |
| Screen Size | 1.54 | Inch |
|
| Display Resolution | 152(H)×152(V) | Pixel | Dpi:140 |
| Active Area | 27.512×27.512 | mm |
|
| Pixel Pitch | 0. 181×0. 181 | mm |
|
| Pixel Configuration | Square |
|
|
| Outline Dimension | 32.0(H)×50.00(V) ×2.5 (D) | mm |
|
Input/output pins
| No. | Name | I/O | Description |
| 1 | GND | P | Ground |
| 2 | VCC | P | Power Supply for the chip |
| 3 | SCL | I | Serial Clock pin (SPI) |
| 4 | SDA | I/O | Serial Data pin (SPI) |
| 5 | RES# | I | Reset signal input. Active Low. |
| 6 | DC | I | Data /Command control pin |
| 7 | CS | I | Chip select input pin |
| 8 | BUSY | O | Busy state output pin |
Drawing
core advantage
Ultra-Compact Size
High Pixel Density
Zero-Power Image Retention
Sunlight Readable & Eye-Friendly
Wide Viewing Angle
Lightweight & Thin
High Contrast B&W
Memory-in-Pixel Support
Target Application Scenarios
Wearable Tech
Smart bands, minimalist watches, fitness trackers (time, steps,
notifications).
IoT Sensors & Tags
Portable Medical Devices
Industrial Tools
Smart Home Devices
Electronic Accessories
Battery-Powered Indicators
Educational/DIY Kits
Key Precautions
Refresh Limitations
Temperature Sensitivity
Voltage Requirements
ESD Protection
Mechanical Stress
Do not bend, press, or puncture the screen. The glass substrate is
fragile.
Avoid direct contact with the e-ink layer (no cleaning agents or
sharp objects).
UV Exposure
Power Sequencing
FAQs
Q1: Why is the screen slow to update?
A: E-paper relies on physical particle movement. Full refresh takes
~2s for clean transitions; partial refresh is faster (~0.3s) but
may require full refreshes periodically to eliminate ghosting.
Q2: Can I use it with Arduino/Raspberry Pi?
A: Yes, but you’ll need a compatible driver board (e.g., SPI
interface). Libraries like GxEPD2 (Arduino) or waveshare-epd (RPi)
simplify integration.
Q3: Why does the display show ghosting?
A: Caused by incomplete particle realignment. Fix: Trigger a full
refresh cycle every 5–10 partial updates. Avoid high-contrast image
switches without full refreshes.
Q4: Does it really consume zero power?
A: Yes, when displaying a static image. Power is only consumed
during screen refreshes. The controller IC may have minimal sleep
current (~5–10µA).
Q5: Can I cut or resize the display?
A: No. The glass substrate and e-ink film are factory-sealed.
Physical modification destroys the display.
Q6: Why is my display blank after power-up?
A: Check:
Voltage levels (logic/VCOM)
SPI communication signals
Reset sequence timing
MCU code initialization routine
Q7: How do I handle image persistence in cold/hot environments?
A: Below 0°C, refresh time increases significantly. Above 50°C,
particles move faster but may cause flickering. Use temperature
compensation algorithms if supported by the driver IC.
Q8: Is touch functionality supported?
A: No, this is a display-only module. Touch requires an external
overlay (not recommended due to added thickness/reflectivity).
Q9: Can I drive it without a controller board?
A: Not recommended. You need a dedicated driver IC (e.g., SSD1681)
to generate high-voltage waveforms for e-ink particle movement.
Q10: What causes "burn-in" effects?
A: Unlike OLED, e-paper has no permanent burn-in. However, extreme
long-term static images (months/years) may cause temporary
retention. Fix: Cycle through full-black/white screens.
