3inch E-Paper (G) Raw Display, 400 × 168, SPI Interface

3″ E-Paper (G)

Low Power, Wide Viewing Angle, Paper-Like Effect Without Electricity

Ideal for price tags, shelf labels, industrial instruments…

Features At A Glance

No backlight, keeps displaying last content for a long time even when power down
Ultra low power consumption, basically power is only required for refreshing
Comes with development resources and manual(driver board schematic, examples for Raspberry Pi/Arduino/STM32)

Specifications

OPERATING VOLTAGE	3.3V	DISPLAY COLOR	Red/Yellow/Black/White
INTERFACE	3-wire SPI, 4-wire SPI	GREY SCALE	2
OUTLINE DIMENSIONS	86.4 × 39.2 × 0.85mm	FULL REFRESH TIME	12s
DISPLAY SIZE	70.4 × 29.568mm	REFRESH POWER	<60mW (typ.)
DOT PITCH	0.176 × 0.176mm	STANDBY CURRENT	<0.01uA (almost none)
RESOLUTION	400×168 pixels	VIEWING ANGLE	>170°

Advantages Of EINK

E-paper display utilizes microcapsule electrophoretic technology for displaying, the principle is: charged particles suspended in clear fluid will move to sides of microcapsule when electric field is applied, making the microcapsule become visible by reflecting ambient light, just as traditional printed paper.
E-paper display will clearly display images/texts under lamplight or natural light, requires no backlight, and features nearly up to 180° viewing angle. It is usually used as e-reader due to its paper-like effect.