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With Touch & Front-light

With Front Light

3.7" E-Paper Display with Frontlight, 416x240 SPI Interface | GDEY037T03-FL21

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3.7" E-Paper Display with Frontlight, 416x240 SPI Interface | GDEY037T03-FL21

3.7" E-Paper display with frontlight, 416x240, 4 grayscale, SPI interface, 0.3s partial refresh, readable in dark, low power, compatible with standard embedded controllers.

Number of views:

1000

Product serial number

63037000

3.7" Monochrome E-Ink
with Front Light

Low Power Fast 4 Grayscale

GooDisplay's 3.7" E Ink panel (416×240, 4 grays) features integrated front light, ultra-thin optical film, and bistable power — draws current only on refresh. 9 LEDs ensure dim-light readability. Fast refresh 1.5s, partial 0.3s. The go-to module for high-performance, battery-powered applications.

Next-Gen Monochrome Front Light E-Paper

Monochrome Fast Refresh

Driver IC: UC8253

Colors: Black, White

Fast refresh time: 1.5 s (full refresh)

Ultimate Power Saving

Refresh power: only 18 mW

Standby power: as low as 0.003 mW (near zero when idle)

Front Light Design

9 LEDs with 6-pin FPC connector

Parallel circuit design

Operating current: ≤ 60 mA

✔️ Partial Refresh · Fast UI response

✔️ Full Refresh · Clean & ghost-free

Why Choose Our Front Light Technology?

Thinner, energy-efficient, and exceptional optical performance

Technical Specifications

3.7" Monochrome Front Light E-Paper Display GDEY037T03-FL21 — Key Parameters

Resolution

416 × 240

130 PPI

Grayscale

Levels

Full Refresh

2 s

Full Refresh

Fast Refresh

1.5 s

Fast Refresh

Partial Refresh

0.3 s

Partial Refresh

Front Light LEDs

Parallel Design

Operating Current

≤ 60 mA

Front Light On

Operating Temperature

0 ~ 50 °C

Ambient Range

✔ Bistable retains image without power

✔ Low Power only 18 mW on refresh

✔ Ultra-Thin Film seamless integration

✔ Wide Viewing Angle near 180° no color shift

Customizable Front Light Solution

✓ Choose between Cool White or Warm White LEDs
✓ Adjustable brightness by increasing LED count
✓ Flexible circuit design: series or parallel configurations

Request a custom quote →

Sustainable & Eye-Friendly Display

No Harmful Blue Light

Comfortable reading for extended hours, ideal for digital signage and readers

Paper-like Experience

Reduce paper waste — sustainable choice for retail and logistics

Readable in Darkness

Front light ensures crisp visibility in low-light environments

Applications

Industrial HMI

Electronic Shelf Labels

Smart Home Devices

Retail & Logistics

Other 3.7" Variants

3.7" B/W

3.7" B/W + Touch

3.7" B/W + Touch + Front Light

Driver Solutions & Development Kits

ESP32 Ecosystem

E-Paper Module

GDEY037T03-FL21

Touch+FL Adapter

ESP32-FTS02

ESP32-L Mainboard ESP32-L

purchase link

STM32 Driver Solution

E-Paper Display GDEY037T03-FL21

Adapter Board DESPI-C02

Touch+FL Adapter

ESP32-FTS02

STM32 Mainboard

STM32

purchase link

← Scroll for complete STM32 ecosystem →

ESP8266 Solution

E-Paper Display GDEY037T03-FL21

Adapter Board DESPI-C02

Touch+FL

ESP32-FTS02

ESP8266-L

ESP8266-L

purchase link

Arduino Compatible

E-Paper Display GDEY037T03-FL21

Adapter Board DESPI-C02

Touch+FL Board

ESP32-FTS02

DEArduino Board DEArduino

purchase link

Beyond the Product: Our Core Guarantees

Expertise

Dedicated Engineering Support

Senior engineers provide full lifecycle support from design to production, 7x24 response.

Quality

Stringent Quality System

8 inspection checkpoints, 99.9% yield rate, ISO-certified facilities.

Experience

18 Years Industry Leadership

Trusted by thousands, proven expertise in e-paper solutions.

Inventory

Massive On-Site Stock

48-hour fast dispatch (business days) to keep your production moving.

Keyword:

e-paper technology

Frontlight E Ink display

fast refresh e-paper

energy-saving display

reflective screen

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Related information download

GDEY037T03-FL21_Specification

Categories:

Front Light

Number of downloads:

94

File size:

4.5M

Time:

2025-05-12 15:08:09
GDEY037T03-FL21-Drawing

Categories:

Theother

Number of downloads:

64

File size:

101KB

Time:

2025-02-17 16:56:00
GDEY037T03-FL21 ESP32 Sample Code

Categories:

ESP32 Library

Number of downloads:

18

File size:

24KB

Time:

2025-08-07 09:58:34
GDEY037T03-FL21 STM32 Sample Code

Categories:

STM32 Library

Number of downloads:

6

File size:

2.0M

Time:

2025-08-07 09:55:30
GDEY037T03-FL21 ESP8266 Sample Code

Categories:

ESP8266 Library

Number of downloads:

1

File size:

25KB

Time:

2025-08-07 10:02:49
GDEY037T03-FL21 Arduino Sample Code

Categories:

Arduino UNO Library

Number of downloads:

5

File size:

14KB

Time:

2025-08-07 09:52:46
Why can't I download the files?

Categories:

Other Documents

Number of downloads:

1506

File size:

650KB

Time:

2024-01-14 11:17:00
The Lastest Catalog

Categories:

Other Documents

Number of downloads:

301

File size:

6.2M

Time:

2024-10-15 13:52:00

GDEY037T03-FL21_Specification

Categories:

Front Light

File size:

4.5M

Number of downloads:

2025-05-12 15:08:09

GDEY037T03-FL21-Drawing

Categories:

Theother

File size:

101KB

Number of downloads:

2025-02-17 16:56:00

GDEY037T03-FL21 ESP32 Sample Code

Categories:

ESP32 Library

File size:

24KB

Number of downloads:

2025-08-07 09:58:34

GDEY037T03-FL21 STM32 Sample Code

Categories:

STM32 Library

File size:

2.0M

Number of downloads:

2025-08-07 09:55:30

GDEY037T03-FL21 ESP8266 Sample Code

Categories:

ESP8266 Library

File size:

25KB

Number of downloads:

2025-08-07 10:02:49

GDEY037T03-FL21 Arduino Sample Code

Categories:

Arduino UNO Library

File size:

14KB

Number of downloads:

2025-08-07 09:52:46

Why can't I download the files?

Categories:

Related Products

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Relevant information

Support :

E Ink Display Customization Solutions

2024-04-02 17:43

Blog :

How to drive E-Paper Front Light?

2023-07-11 11:29

FAQ :

How to custom Front-light for E Ink display?

2024-04-07 21:15

FAQ :

Front light & Touch Screen for EPD -- FAQ

2021-01-21 14:14

FAQ :

E-paper Display FAQ

2020-05-18 15:40

Support :

ePaper Display Usage Guidelines

2020-05-18 15:49

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Time of issue:2020-04-27 00:00:00

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PART NUMBER	GDEY037T03-FL21
TYPE	Dot Matrix
SIZE	3.7 inch
IC	UC8253
RESOLUTION	416x240
OUTLINE SIZE(mm)	92.99x53.00x1.65
ACTIVE SIZE(mm)	81.54x47.04
PIXEL PITCH(mm)	0.196x0.196
OPERATING TEMP	0℃~50℃
STORAGE TEMP	-25℃~70℃
CONNECTOR	24-pin FPC, pitch: 0.5 mm
MAX GRAYSCALE	4
COLOR	Black,White
INTERFACE	SPI
FULL REFRESH(s)	2
FAST REFRESH(s)	1.5
PARTIAL REFRESH TIME(s)	0.3
POWER CONSUMPTION OF THE REFRESH(mW)	18
STANDBY POWER CONSUMPTION (mW)	0.003

FRONT-LIT CONNECTOR	6 pin FPC
FRONT-LIT NUMBER OF LED LIGHT	9
FRONT-LIT CIRCUIT MODE	Parallel connection
FRONT-LIT OPERATING VOLTAGE	2.8V-3.3V
FRONT-LIT OPERATING CURRENT	≤60mA

Product categories Toggle navigation

3.7" E-Paper Display with Frontlight, 416x240 SPI Interface | GDEY037T03-FL21

3.7" Monochrome E-Ink with Front Light

Next-Gen Monochrome Front Light E-Paper

Monochrome Fast Refresh

Ultimate Power Saving

Front Light Design

Why Choose Our Front Light Technology?

Technical Specifications

Customizable Front Light Solution

Sustainable & Eye-Friendly Display

No Harmful Blue Light

Paper-like Experience

Readable in Darkness

Applications

Other 3.7" Variants

Driver Solutions & Development Kits

ESP32 Ecosystem

STM32 Driver Solution

ESP8266 Solution

Arduino Compatible

Beyond the Product: Our Core Guarantees

Related information download

GDEY037T03-FL21_Specification

GDEY037T03-FL21-Drawing

GDEY037T03-FL21 ESP32 Sample Code

GDEY037T03-FL21 STM32 Sample Code

GDEY037T03-FL21 ESP8266 Sample Code

GDEY037T03-FL21 Arduino Sample Code

Why can't I download the files?

The Lastest Catalog

Related Products

Relevant information

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3.7" Monochrome E-Ink
with Front Light