Display Modules

4-Inch Round TFT LCD Display with CTP Touch, 720×720 Resolution, MIPI Interface

Name: 4-Inch Round TFT LCD Display with CTP Touch, 720×720 Resolution, MIPI Interface GX040R-30MB-A1-CTP - RJY Display
SKU: GX040R-30MB-A1-CTP

Display and controller solution support for engineering-driven projects.

– LCD Size: 4.0 inches
– Resolution: 720 × 720 pixels
– Brightness: 350 cd/m²
– Interface Type: MIPI
– Touch Support: Integrated CTP Touch Panel

Request Compatibility Review View Technical Details

For faster evaluation, please share your target application, display size, resolution, interface, touch requirement, controller board requirement, and annual demand.

SKU: GX040R-30MB-A1-CTP Category: Display Modules, Round Display

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4-Inch Round TFT LCD Display with CTP Touch, 720×720 Resolution, MIPI Interface

Engineering Review

Confirm Product Fit Before Sampling

Display and controller board projects usually require more than a model number. RJY can review your technical requirements before sample or quotation discussion.

Specification Matching

Check display size, resolution, brightness, viewing angle, touch requirement, and operating environment.

Interface & Board Review

Review interface type, pin definition, controller board requirement, driver IC, and system compatibility.

Customization Direction

Discuss cover glass, backlight, touchscreen, FPC, firmware, and mechanical coordination when needed.

RFQ Preparation

Prepare application details, sample quantity, annual demand, target timeline, datasheet, or reference product.

Description
FAQ

This 4-inch round TFT LCD display with CTP touch is designed for compact embedded applications requiring a circular display with interactive functionality, high-resolution graphics, and efficient system integration. Featuring a 720×720 resolution, 350 cd/m² brightness, and a MIPI interface, this module provides a reliable display solution for smart devices, wearable electronics, industrial HMI systems, and customized embedded products.

The integrated capacitive touch panel (CTP) enables intuitive user interaction, making this round display suitable for touch-enabled control interfaces, smart terminals, IoT devices, and embedded equipment. The circular form factor provides a distinctive product appearance while supporting flexible integration into compact designs.

Equipped with the JD9365DA driver IC, this display module supports stable image control and reliable embedded system integration. With an outline dimension of 123.5 × 123.5 × 3.4 mm and an operating temperature range of -20°C to +70°C, it is suitable for various embedded and industrial display applications.

Specification Table

Item	Specification	Unit	Remark
LCD Size	4.0	inch	Round display
Resolution	720 × 720	pixels	High-resolution circular display
Driver IC	JD9365DA	—	Display driver IC
Viewing Area	101.52 × 101.52	mm	Active display area
Module Size	123.5 × 123.5 × 3.4	mm	Integrated touch structure
Brightness	350 (Typ.)	cd/m²	Standard brightness
Interface	MIPI	—	High-speed embedded interface
Touch Panel	CTP	—	Capacitive touch panel integrated
Operating Temperature	-20 ~ +70	°C	Industrial application range

Key Features

4-Inch Round Touch TFT LCD Display

The combination of a circular TFT LCD and integrated capacitive touch panel provides an interactive display solution for compact electronic products and embedded systems.

720×720 High-Resolution Display

The 720×720 pixel resolution delivers clear graphics, detailed icons, and smooth user interface rendering for advanced embedded applications.

MIPI Interface Support

The MIPI interface provides an efficient connection solution for embedded platforms requiring compact wiring, high-speed communication, and space-saving system design.

Integrated Capacitive Touch Function

The built-in CTP touch panel supports interactive operation for HMI systems, smart terminals, control interfaces, and customized electronic devices.

Compact Round Mechanical Structure

The circular structure and integrated touch design provide a flexible solution for products requiring a distinctive appearance and efficient installation.

Wide Operating Temperature Range

The module supports operation from -20°C to +70°C, making it suitable for various embedded and industrial environments.

Applications

Smart Wearable Devices
Industrial HMI Systems
Smart Home Control Interfaces
IoT Smart Terminals
Portable Electronic Devices
Medical Equipment Interfaces
Automotive Interior Displays
Customized Embedded Products

Application Scenarios

Smart Wearable Equipment

The round 4-inch touch display provides a modern interface solution for wearable electronics and portable devices requiring clear graphics and interactive operation.

Embedded HMI Control Systems

The combination of high resolution, MIPI interface, and integrated touch capability supports compact human-machine interaction systems.

Smart Home Interfaces

The circular display format helps create visually distinctive smart switches, control panels, and connected home devices.

Industrial Monitoring Equipment

The integrated touch function, thin structure, and wide operating temperature range support use in industrial instruments, monitoring systems, and embedded control equipment.

Customized Display Projects

RJY Display supports project-based display customization, including touch integration, interface adaptation, backlight customization, and controller matching according to application requirements.

Why Choose This 4-Inch Round TFT LCD Display?

Integrated CTP touch panel for interactive applications
720×720 high-resolution round display for detailed interfaces
MIPI interface support for compact embedded system integration
Round display format for differentiated product design
Compact integrated structure for space-limited products
Wide operating temperature range for embedded applications
Customization support based on project requirements

Request Information

Would you like to receive the datasheet, 3D model (STEP file), or a sample quote for evaluation?

Contact RJY Display for display integration support and customized TFT LCD solutions.

FAQ

Is RJY an Original Equipment Manufacturer (OEM)?

Yes. RJY is a direct provider and manufacturer with vertically integrated capabilities, offering full-cycle hardware innovation from design and PCBA assembly to final system integration.

What types of customization does RJY accept?

We can provide customization in the following four distinct areas: Systems & HMI、Display Modules、Software Services、Industrial Design.

What is the stock status for this product?

Most products on display have at least one unit in stock for testing or quick sampling. For sample requests over 20 units, please check with us in advance to ensure the current stock status.

How are the fees structured for custom projects?

Our custom project fees typically consist of two main components:
NRE (Non-Recurring Engineering) fees and unit pricing.
In many cases, if your order reaches a certain volume, we offer to offset or credit a portion of the NRE fees back to you.

How long does a typical customization project take?

The timeline depends on the depth of customization:
Software/Firmware Tweaks: 1-2 weeks
Minor Hardware Modifications: 4-6 weeks
Full-Cycle R&D Projects: 12-16 weeks