What are the delivery times for samples and mass production?

Ready-made Sample: within 1 week; Custom Sample: 1~2 weeks; Mass production: 3-4 weeks.

What is the resolution of this display?

The display resolution is 300*400 with a pixel pitch of 0.212*0.212 mm.

4.2'' 300*400 Monochrome Black and White E-Paper Display EPD

Name: 4.2'' 300*400 Monochrome Black and White E-Paper Display EPD
Brand: Royal Display Co., Ltd.
SKU: 2165624115

Guangdong, ChinaRoyal Display Co., Ltd.

US$3.99

500 Pieces

Sample price:US$3.99/piece.Request sample

Product profile

Customization

Available

Usage

Small-sized LCM, E-Paper Display

Digital LCD Module Type

Timing Module

Model NO.

GDEM042T31WT

Touch Screen Type

No Touch Function

Type

LCM

Response Time

30ms

Viewing Angle

Free View

Display Technology

E-Ink

DOT-Matrix Graphic LCD Module Type

Row/Column-Driven Control Type

LCD Drive Mode

Multiplex Drive LCD Module

Customized

Non-Customized

Screen Size

4.2''

Display Resolution

400*300

Active Area

84.8*63.6 mm

Pixel Pitch

0.212*0.212 mm

Module Dimension

91*77*1.2 mm

Driver IC

UC8276c

Transport Package

Foam, Tray, Sealed

Specification

TBD

Trademark

optional

Origin

China

HS Code

8531200000

Production Capacity

50K Pieces/Year

Key features

Ultra-Low Power Consumption: Consumes power only when image changes, ideal for battery-powered devices.

High Contrast & Readability: Offers high contrast ratio, readable in direct sunlight and various lighting.

Wide Viewing Angle: Provides clear content visibility from different orientations without distortion.

Paper-Like Display Experience: Reflective technology mimics ink on paper, reducing eye strain.

Fast Response Time: Features a 30ms response time for efficient display updates.

10+ Years Manufacturing Expertise: Over a decade of experience in LCD module design and production.

1-Year Warranty Coverage: Provides reliable warranty service for one year.

OEM & ODM Customization: Offers custom services with drawings and procedures for confirmation.

Company profile

Royal Display Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2016-05-02Nearest Port: Shenzhen, HONGKONGAverage Response Time: ≤4.37hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CIF, EXW

AI-Powered supplier vetting

SummaryRoyal Display Co., Ltd. is identified as both a trading company and manufacturer/factory in Shenzhen, China, specializing in LCD and LED display products. It reports six production lines, 41–50 quality-control staff, monthly capability of 300,000 different kinds of LCM/LCD, and stated peak-season fulfillment of one month. The supplier claims CE, ISO, RoHS, TS 16949, ISO 14001, and ISO 9001 certifications, although the provided information does not include certificate numbers or validity details. It describes experienced engineers, customized pre- and after-sales support, and substantial customer-design activity. Export coverage is broad, with 71%–90% of sales reportedly from exports and self-managed import/export rights. Evidence of actual customer transactions is limited to one recorded trade transaction and one associated buyer name, so customer-case strength and financial credibility cannot be fully verified.

Supplier typeThe supplier is explicitly classified as both a trading company and manufacturer/factory, while another record identifies its company nature as a factory. Its stated Shenzhen factory address is consistent across the records, supporting a manufacturing presence rather than a trading-only profile.

CertificationsThe supplier states that its products have passed CE, ISO, and RoHS certifications, and separately lists TS 16949, ISO 14001, and ISO 9001 management-system certifications. The records do not provide certificate identifiers, issuing bodies, or validity dates, so the claims are documented but not independently verifiable from the supplied information.

After-Sales capabilityThe supplier states that it provides customized after-sales service, employs skilled engineers for pre-sales technical questions and optimized solutions, and emphasizes professional customer guidance and long-term cooperation. These are explicit service commitments, but no service response times, service locations, or performance records are provided.

R&D capabilityThe supplier states an innovation-oriented company philosophy, reports 21–30 years of total R&D-engineer experience, and indicates that more than 90% of products are customer-designed. These points support product-development capability, although no patents, new-product records, or specific R&D projects are provided.

Production capacityThe supplier reports six production lines, 41–50 quality-control staff, 50 total staff, monthly capability of 300,000 different kinds of LCM/LCD, off-peak lead time within 15 workdays, and peak-season fulfillment of one month. These stated resources and capacity indicators support an established production operation, though output and staffing figures are self-reported.

Customization capabilityThe supplier explicitly offers project-based optimized solutions and customized service, while stating that more than 90% of its products are specially customer-designed for applications including medical, industrial, testing, meter, and terminal equipment. This is direct evidence of substantial customization experience.