The DBT040BCSA01 is a 4-inch round TFT LCD module featuring 720×720 resolution, 400 cd/m² typical brightness, a 30PIN 4-lane MIPI DSI interface, and a slim 2.09 mm module profile. Designed for embedded display applications that require a circular visual format, this module combines a high-resolution image area with a compact mechanical structure.
Its original design positioning focuses on flight simulator cockpit displays, aircraft instrument simulation, and avionics training equipment. The circular display area is well suited to digital representations of aviation gauges, navigation instruments, engine indicators, and other cockpit interfaces.
Beyond aviation simulation, the same display architecture can be useful for smart home control panels, smart appliance interfaces, IoT equipment, digital control instruments, and customized embedded HMI products. The 4-inch format provides more interface space than smaller circular displays, allowing designers to present multiple controls, numerical values, status information, and graphical elements within a single round interface.
For OEM and ODM developers, the DBT040BCSA01 provides a practical option when a project needs a 4-inch-class circular LCD with 720×720 resolution and MIPI DSI connectivity rather than a conventional rectangular display.
The DBT040BCSA01 is designed around several requirements commonly found in embedded display projects:
4-inch circular TFT LCD module
720×720 pixel resolution
101.52×101.52 mm active area
400 cd/m² typical brightness
30PIN 4-lane MIPI DSI interface
SC7707 controller IC
1200:1 typical contrast ratio
16.7 million display colors
All O’clock viewing direction
105.61×106.55×2.09 mm overall dimensions
White LED backlight
-20°C to +70°C operating temperature
-30°C to +80°C storage temperature
Approximately 30 ms typical response time
Optional touch-panel customization
The combination of resolution, brightness, circular geometry, and thin construction makes this module suitable for both instrument-style displays and graphical control interfaces.
| Parameter | Specification |
|---|---|
| Model | DBT040BCSA01 |
| Display Type | TFT LCD |
| Display Shape | Round / Circular |
| Display Size | 4.0 inch |
| Resolution | 720 × 720 pixels |
| Display Colors | 16.7M |
| Active Area | 101.52 × 101.52 mm |
| Interface | 30PIN 4-LANE MIPI DSI |
| Controller IC | SC7707 |
| Brightness | 400 cd/m² Typ. |
| Contrast Ratio | 1200:1 Typ. |
| Viewing Direction | All O’clock |
| Module Dimensions | 105.61 × 106.55 × 2.09 mm |
| Backlight | White LED |
| LED Configuration | 4 × 2 LEDs |
| Power Supply Voltage | 2.8V |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Response Time | 30 ms Typ. |
| Touch Panel | Optional Customization |
The specifications above are based on the current Aptus product information. Engineers should verify the latest datasheet, electrical timing, connector definition, and mechanical drawings before final PCB and enclosure design.
One of the main advantages of this module is its 720×720 resolution.
A circular display needs enough pixel density to render curved scales, fine graphical elements, small text, icons, and numerical information without making the interface appear overly coarse. The square 720×720 pixel matrix provides a balanced canvas for designing circular user interfaces.
For aviation simulation, this can be used for detailed gauge markings, navigation information, aircraft parameters, and instrument graphics.
For smart home products, the same resolution can support richer interfaces such as temperature readouts, device icons, circular adjustment controls, schedules, energy information, and multiple status indicators.
The larger 4-inch format also gives designers more room to separate information into visual zones. Instead of using a small display only for a single number or status indicator, a 4-inch circular LCD can support a more complete user interface.
The DBT040BCSA01 provides approximately 400 cd/m² typical brightness.
This level of brightness is suitable for many indoor embedded applications where the display needs to remain clearly visible under normal ambient lighting.
For flight simulator cockpits, it can help maintain readable instrument graphics and numerical information.
For smart home and smart appliance products, 400 nits can provide a clear interface for wall-mounted controllers, appliance control panels, and indoor IoT equipment.
Brightness requirements should nevertheless be evaluated according to the final installation environment. Products exposed to strong direct sunlight or unusual optical conditions may require a different brightness specification or optical configuration.
The module uses a 30PIN 4-lane MIPI DSI interface, providing a high-speed display connection suitable for modern embedded system architectures.
For product developers, MIPI DSI can be attractive when PCB space and high-speed display data transmission are important design considerations.
Potential host systems may include embedded processors and customized display controller boards capable of supporting the module's electrical and MIPI requirements.
Before selecting the module for mass production, engineers should verify:
MIPI DSI lane compatibility
Initialization sequence
Display timing
Power requirements
Connector and FPC configuration
Host-controller compatibility
Software driver requirements
Mechanical clearance
Aptus can provide technical information for sample evaluation and system integration.
The DBT040BCSA01 was originally developed with flight simulator and aviation instrument applications in mind.
The circular format is particularly useful because many cockpit instruments are visually based on round gauges. A circular TFT LCD can therefore be placed behind a custom bezel to create a digital representation of an aircraft instrument.
Possible applications include:
Flight simulator cockpit instruments
Aircraft gauge simulation
Airspeed indicators
Altitude displays
Vertical speed indicators
Engine monitoring instruments
Navigation interfaces
Avionics training equipment
Pilot training systems
Home cockpit projects
The 720×720 resolution gives simulator developers enough graphical space to reproduce detailed instrument scales, pointers, digital readings, warning indicators, and other dynamic cockpit information.
The 105.61×106.55×2.09 mm module size also provides flexibility for custom cockpit panels where available depth is limited.
Aptus currently lists this product within its Flight Simulator Solution category alongside other square and circular aviation display modules.
A different application direction for this module is smart home control.
As home automation systems become more integrated, users increasingly interact with multiple functions through a single control interface. A 4-inch circular LCD can provide a distinctive alternative to conventional rectangular wall panels.
For example, a smart home controller could use the center of the display to show the current room temperature while surrounding graphical controls provide access to:
Lighting
Air conditioning
Heating
Ventilation
Curtains
Security
Energy monitoring
Home scenes
Room status
The circular display can also be designed around a radial interaction model. Users could rotate or select different functional areas around the interface, creating a user experience that visually matches the round hardware.
For manufacturers developing premium smart-home controllers, this can make the display part of the product's industrial design rather than simply a rectangular component inserted into a housing.
The DBT040BCSA01 can also be evaluated for smart appliance displays.
Many appliances require more information than a traditional LED indicator can provide, but a large rectangular display may be unnecessary. A 4-inch round LCD offers an intermediate solution for products that need a graphical interface while maintaining a compact front panel.
Potential applications include:
Smart coffee machines
Air purifiers
Smart humidifiers
Kitchen appliances
Smart ovens
Beverage machines
Home climate-control equipment
Water treatment equipment
Smart cooking equipment
Compact household appliances
For a smart coffee machine, the display could show beverage selection, temperature, preparation progress, cleaning reminders, and operating status.
For an air purifier, the circular interface could display air-quality information in the center while using a surrounding visual ring to indicate purification status or fan operation.
For a smart oven, the interface could display cooking mode, temperature, remaining time, and program status.
The 720×720 resolution provides enough graphical flexibility to create these interfaces without requiring a much larger display.
The standard DBT040BCSA01 is presented as a TFT LCD module, while the current Aptus product information indicates touch-panel customization is available.
This creates an opportunity for OEM developers who want to convert the circular display into a complete interactive control interface.
A customized touch solution can be considered for applications such as:
Smart home wall controllers
Smart appliance panels
IoT control interfaces
Compact HMI systems
Interactive simulator controls
When touch functionality is required, the final design should consider cover glass, touch sensor structure, bonding method, touch controller compatibility, mechanical tolerance, and user-interface requirements.
For flight simulator products, touch may be optional because some cockpit interfaces are intended to work with physical switches, knobs, or dedicated controls.
For smart appliances and home automation devices, touch functionality can be more valuable because it allows the display to combine information and control within one front-panel component.
The module's overall dimensions are approximately 105.61 × 106.55 × 2.09 mm.
The approximately 2.09 mm thickness can be beneficial when the display needs to fit into a relatively shallow product enclosure.
Mechanical engineers should still reserve appropriate space for:
FPC routing
Connector clearance
PCB positioning
Mounting structures
Bezel design
Cover glass
Touch components
Thermal considerations
For a smart appliance, the front bezel can be designed around the circular active area to create a clean product appearance.
For a flight simulator, the display can be positioned behind a customized instrument bezel to reproduce the appearance of an aircraft gauge.
The product specification lists an All O’clock viewing direction.
This is useful for interfaces that may be viewed from different positions rather than from a single fixed direction.
In a cockpit simulator, users may look at different instruments from varying angles. In a smart home environment, a wall-mounted control panel may also be viewed while the user is standing to the side rather than directly in front of the display.
This viewing characteristic therefore supports applications where display orientation and user position may vary during operation.
The DBT040BCSA01 is particularly appropriate when a project has the following requirements:
Circular form factor + 4-inch display area + 720×720 resolution + 400-nit brightness + MIPI DSI interface + slim module construction.
It can be evaluated for both visual-only and touch-enabled products.
Compared with smaller circular LCD modules, the 4-inch format provides more room for graphical information. This makes it especially interesting for interfaces that need to display several pieces of information simultaneously rather than a single numerical value.
Aptus supports standard LCD modules as well as selected semi-custom and customized display solutions.
Depending on project requirements, engineering support can include:
Touch-panel integration
FPC and connector solutions
Cable customization
Mechanical optimization
Display interface evaluation
Driver board development
Cover glass solutions
Integrated display assemblies
Aptus states that its technical team supports total custom solutions and semi-custom development, including connectors, ZIF, FPC, touch panels, interconnect solutions, control boards, and system-integrated display solutions.
For OEM and ODM customers, this allows the display selection process to be based on the complete product rather than only on screen size.
Shenzhen Aptus Technology Co., Limited is a professional LCD display supplier focused on TFT LCD modules, touch display solutions, and customized display development.
Aptus has been engaged in the LCD industry since 2014, with capabilities covering LCD display R&D, manufacturing, and marketing.
Its product portfolio includes TFT LCD modules, touch panels, control and driver boards, cables, backlight solutions, integrated display kits, circular LCD modules, wide-temperature displays, and specialized display solutions.
The company works with international OEM, ODM, engineering, and distribution customers and supports projects from initial display selection and sample evaluation through customization and production supply.
For customers developing flight simulation equipment, smart appliances, smart home control products, embedded HMI systems, or specialized electronic instruments, Aptus can evaluate display requirements including size, resolution, interface, brightness, touch functionality, mechanical structure, and operating environment.
The company's broader product portfolio includes multiple flight simulator display sizes and formats, allowing customers to compare circular and square display solutions according to cockpit or product requirements.
The DBT040BCSA01 provides a 720×720 pixel resolution.
The typical brightness is 400 cd/m².
It uses a 30PIN 4-lane MIPI DSI interface.
The active area is approximately 101.52×101.52 mm.
The module measures approximately 105.61×106.55×2.09 mm.
Yes. Flight simulator cockpit instruments and aviation simulation systems are the original primary applications for this model.
Yes. Its 4-inch circular format and 720×720 resolution make it suitable for smart home controllers, room-control interfaces, IoT panels, and other indoor home automation products.
Yes. It can be evaluated for smart coffee machines, air purifiers, smart ovens, climate-control equipment, beverage machines, and other appliances that require a compact graphical display.
The standard product is a TFT LCD module. Aptus lists touch-panel customization as an available option, so customers requiring an interactive smart home or smart appliance interface can discuss a customized touch configuration with Aptus.
The specified operating temperature range is -20°C to +70°C, with a storage temperature range of -30°C to +80°C.
The product specification lists SC7707 as the controller IC.
Yes. Aptus supports sample evaluation for customers who need to verify display performance, mechanical fit, interface compatibility, or system integration before mass production.
If you are developing a flight simulator cockpit, aviation training system, smart home control panel, smart appliance, IoT controller, digital instrument, or compact HMI product, the DBT040BCSA01 can be evaluated as a 4-inch circular display solution.
When requesting technical support or a quotation, provide your:
Required display size
Resolution
Interface
Brightness requirement
Touch requirement
Mechanical dimensions
Operating environment
Application
Estimated quantity
Aptus can help evaluate whether the standard DBT040BCSA01 meets the project requirements or whether a customized circular TFT LCD solution would be more appropriate.
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