The 3.5 inch 320×480 SPI RTP Touch Panel TFT LCD Module is a compact display solution designed for embedded equipment, portable industrial controllers, instrumentation, smart home interfaces, automation devices, IoT equipment, and custom OEM/ODM products. Model DBT035BQR14S030A combines a 320×480 IPS TFT LCD with a resistive touch panel (RTP), 4-wire SPI interface, 300 cd/m² brightness, and a compact 55.26 × 84.55 × 3.50 mm module size. This combination makes it suitable for product designers who need a small interactive display with reliable touch input and straightforward embedded-system integration.
The module is particularly suitable for applications where users may operate equipment with gloves, a stylus, or under conditions where a conventional capacitive touch panel is not the preferred solution. Its IPS display technology provides good image visibility, while the resistive touch panel offers a practical input method for embedded and industrial interfaces.
Small-format LCD modules are increasingly used in embedded equipment because product designers need to provide graphical user interfaces while keeping the overall enclosure compact. A 3.5-inch display offers enough space for menus, numerical values, icons, status indicators, operating parameters, and basic graphical interfaces without requiring a large front panel.
This 3.5-inch TFT LCD module uses a 320×480 pixel resolution and an IPS transmissive, normally-black display mode. Its active display area is 48.96 × 73.44 mm, while the complete module measures only 55.26 × 84.55 × 3.50 mm. This compact form factor allows the display to be integrated into equipment where internal PCB and enclosure space are limited.
The module also integrates a resistive touch panel (RTP). Unlike capacitive touch technology, resistive touch detects physical pressure applied to the touch surface. This makes it suitable for applications where operators may use gloves, a stylus, or other input tools.
The display uses a 4-wire SPI interface with a 14-pin connection, making it suitable for embedded platforms and microcontroller-based equipment where a compact display interface is required. The product page specifies an ST7365P-G5 integrated driver IC for the display.
The 3.5-inch diagonal size provides a useful balance between readability and compact mechanical integration. With a module thickness of approximately 3.5 mm, the display can be considered for portable equipment, handheld instruments, compact controllers, and embedded HMIs.
The small footprint is particularly valuable for OEM products where the display must fit into an existing enclosure without significantly increasing the overall product dimensions.
The 320×480 resolution provides a portrait-oriented graphical interface suitable for embedded menus, equipment parameters, status information, icons, measurements, and simple graphics.
For embedded-system designers, this resolution can provide substantially more interface flexibility than small monochrome displays while maintaining a relatively compact module size.
The module uses an IPS transmissive TFT LCD with a normally-black display mode. The specified viewing direction is approximately 60°/60°/70°/70° for horizontal and vertical directions.
IPS technology is useful for equipment where users may view the display from different positions rather than directly facing the center of the panel.
The integrated RTP resistive touch panel is one of the main characteristics of this product.
Resistive touch technology can be advantageous for industrial and embedded applications because it responds to pressure rather than relying on the electrical characteristics of a user's finger. As a result, operators can interact with the interface using gloves or a stylus, depending on the application design.
This makes the module a practical option for equipment where touch reliability and flexible input methods are more important than smartphone-style multi-touch interaction.
The standard configuration provides approximately 300 cd/m² typical brightness.
This brightness level is appropriate for many indoor embedded applications. If a project requires operation in bright ambient environments, Aptus Display can evaluate alternative brightness configurations or optical enhancements according to the project requirements.
The specified operating temperature range is -20°C to +70°C, while the storage temperature range is -30°C to +80°C.
This makes the module suitable for a wider range of equipment environments than displays designed only for standard room-temperature applications. The product information also identifies environmental stability testing involving thermal shock and humidity-related conditions.
| Parameter | Specification |
|---|---|
| Product Model | DBT035BQR14S030A |
| Display Size | 3.5 inch |
| Display Type | TFT LCD |
| Display Technology | IPS |
| Resolution | 320 × 480 pixels |
| Touch Technology | Resistive Touch Panel (RTP) |
| Interface | SPI, 4-wire |
| Connector | 14-pin |
| Brightness | 300 cd/m² typical |
| Viewing Direction | 60° / 60° / 70° / 70° |
| Display Mode | IPS transmissive, normally black |
| Color Arrangement | RGB vertical stripe |
| Driver IC | ST7365P-G5 |
| Active Area | 48.96 × 73.44 mm |
| Module Dimensions | 55.26 × 84.55 × 3.50 mm |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Environmental Testing | Thermal shock, humidity and related stability testing |
| Compliance | RoHS |
| Customization | Cover glass, touch sensitivity, driver board, FPC pin-out, brightness |
The above specifications are based on the current Aptus Display product information. For production projects, customers should confirm the latest mechanical drawing, electrical specifications, FPC definition, touch characteristics, and interface requirements with the Aptus engineering team before final design approval.
Choosing a small LCD module for an embedded product requires more than comparing screen size and resolution. Engineers need to consider the display interface, touch technology, mechanical dimensions, viewing characteristics, brightness, operating temperature, and compatibility with the host controller.
This module combines these functions in a compact solution:
3.5-inch TFT LCD + 320×480 resolution + IPS + 4-wire SPI + RTP touch
The combination is especially useful for embedded equipment that requires physical touch input rather than smartphone-style capacitive interaction.
The SPI interface is also relevant to embedded products where PCB simplicity and a compact connection are important. Before integration, the host processor or MCU should be checked for SPI compatibility, available GPIO resources, required driver support, timing requirements, and software implementation.
For equipment operated by technicians, factory personnel, or field workers, the RTP interface can provide an additional practical advantage because the touch panel can be operated using a stylus or gloved finger.
Portable industrial controllers often require a compact graphical interface for setting parameters, checking equipment status, viewing alarms, and controlling operating functions.
The 3.5-inch format provides sufficient interface space while keeping the controller compact.
Measurement and testing instruments can use the display to present numerical readings, test parameters, status information, and configuration menus.
The resistive touch panel is particularly useful where users may wear gloves during equipment operation.
The module can serve as a compact HMI for machines and embedded systems that require direct operator interaction.
Typical interfaces can include menu navigation, parameter adjustment, system monitoring, alarm displays, and equipment configuration.
Compact smart-home equipment may require a local interface for controlling settings, monitoring system status, and interacting with automation functions.
The 320×480 portrait format can accommodate vertically structured interfaces while keeping the control panel relatively compact.
Automation devices frequently use small displays for machine status, configuration, maintenance information, and operational controls.
A compact SPI LCD can be integrated into the control electronics while the RTP provides physical touch input.
IoT products can use the module for local configuration and status monitoring. It can display network information, sensor readings, device settings, system status, and user prompts.
For OEM and ODM projects, display selection often needs to be coordinated with the enclosure, PCB, touch panel, FPC, and software.
Aptus Display provides customization options that allow the display solution to be adapted to project-specific requirements.
When integrating this 3.5-inch SPI LCD into a product, mechanical compatibility should be evaluated first. The active area, overall module dimensions, thickness, mounting structure, viewing orientation, and FPC routing should match the product enclosure and PCB.
Electrical compatibility is equally important. The engineering team should verify SPI communication requirements, pin definitions, driver IC compatibility, power requirements, initialization sequence, and host-controller resources.
For the RTP, the mechanical design should consider touch-panel pressure, cover structure, touch sensitivity, stylus requirements, and expected operating environment.
For products used in demanding environments, temperature, humidity, vibration, dust, and mechanical protection should also be evaluated during the design stage.
If the standard module does not meet the project requirements, customization can be discussed before mass production.
Aptus Display provides standard LCD modules as well as customized and semi-custom display development. The company's touch-panel LCD portfolio includes different display sizes, interfaces, capacitive touch solutions, resistive touch solutions, FPC configurations, and other display integration options.
For this 3.5-inch display platform, potential customization options include:
Cover glass customization
Touch sensitivity adjustment
Driver board customization
FPC pin-out customization
Brightness adjustment
Mechanical design adaptation
Touch panel integration
Interface customization
Sample and prototype development
OEM/ODM production support
Customization should be evaluated according to the project's mechanical, electrical, optical, touch, environmental, and production requirements.
Shenzhen Aptus Technology Co., Ltd. is an LCD module manufacturer and global LCD display supplier providing standard and customized display solutions for international customers.
Aptus Display's product portfolio includes TFT LCD modules, touch panel LCD modules, industrial displays, wide-temperature LCD displays, flight simulator displays, bar-type LCD displays, gaming display solutions, LCD accessories, and other specialized display products.
The company supports customers from display selection and engineering evaluation through customization, prototyping, production, and delivery. Its technical capabilities include touch-panel integration, FPC and connector customization, driver-board development, brightness adjustment, and mechanical integration.
For OEM and ODM customers, this integrated approach can reduce the need to coordinate multiple display-related suppliers and make it easier to align the LCD, touch panel, FPC, driver electronics, and mechanical requirements.
Aptus also provides engineering support, sample orders, scalable manufacturing, quality-related testing, and international customer support. The product information specifically identifies RoHS compliance and environmental testing involving thermal and humidity conditions.
This product uses a resistive touch panel (RTP) rather than a capacitive touch panel. The resistive technology is suitable for applications where users may operate the interface with gloves or a stylus.
The display uses a 4-wire SPI interface with a 14-pin connection. The module uses an ST7365P-G5 integrated driver IC. Host-platform compatibility should be confirmed during the engineering evaluation.
The module has a 320×480 pixel resolution and a 3.5-inch diagonal display size. The active area is 48.96 × 73.44 mm.
Yes. The compact design, IPS TFT technology, RTP touch panel, -20°C to +70°C operating temperature range, and SPI interface make it suitable for many embedded industrial controllers, instrumentation, automation devices, and HMI applications.
However, final suitability should always be evaluated against the actual environmental and mechanical requirements of the target equipment.
Yes. Aptus supports customization options including cover glass, touch sensitivity, driver boards, FPC pin-out, brightness, and other display integration requirements. OEM/ODM development can be discussed according to project specifications.
For a faster technical assessment, customers should provide the target application, required quantity, display size, resolution, interface, touch requirement, operating temperature, brightness requirement, mechanical limitations, and host-controller information.
If you are replacing an existing LCD, providing the current display model, interface, dimensions, and application information can also help Aptus engineers identify a suitable replacement or customization solution.
If you are developing a portable industrial controller, instrumentation device, embedded HMI, automation system, IoT product, smart-home control panel, or other compact touch-enabled equipment, the 3.5 inch 320×480 SPI RTP Touch Panel TFT LCD Module can be evaluated as a practical display solution.
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