1.47-inch Bar-Type Display: 172×320 Resolution, SPI/MCU Interface Support—An Ideal Choice for Small and Portable Devices

     Many clients designing compact, slim-profile devices frequently inquire about small, elongated displays. Today, Mr. Huang—an engineer at Shenzhen Hongjia Technology—introduces a 1.47-inch bar-type display featuring a 172×320 resolution. This model supports both SPI and MCU interfaces, utilizes a 24-pin connection, includes a capacitive touch panel with an I2C interface, and is driven by the stable and reliable ST7789 IC. Below, Mr. Huang provides an analysis of why this 1.47-inch bar display is an excellent hardware choice for small-scale devices.

I. Core Features and Advantages:

1. Unique Bar-Type Dimensions

The 1.47-inch diagonal size is exceptionally compact, making it particularly well-suited for use as an auxiliary display, status bar, information strip, or the primary screen for smart wearable devices.

The 172×320 resolution offers a slender aspect ratio (approximately 1:1.86). Unlike standard square or widescreen formats, this design allows the display to present a long column of information—such as notifications, lyrics, health data, or parameter lists—within a narrow space, thereby eliminating the need for frequent page scrolling.

2. Dual Interface Support

SPI Interface: This constitutes one of the display's greatest advantages. The SPI interface typically requires only 4 to 6 signal lines (e.g., Clock, Data In/Out, Chip Select), which vastly simplifies the hardware connection to the host microcontroller (such as STM32, ESP32, Arduino, etc.) and conserves valuable GPIO resources. Although its refresh rate and data throughput are lower than those of parallel interfaces, it is more than sufficient for a small display of this resolution when presenting static or slowly updating information (such as sensor readings, icons, or text).

MCU Interface: This typically refers to a parallel interface (such as the 8080 or 6800 series). It offers higher data transmission speeds, making it suitable for applications requiring higher refresh rates or dynamic visual effects. The driver IC typically features built-in display memory, which helps offload processing burdens from the host microcontroller.

3. How Does It Serve as a "Godsend for Small Devices"?

Space Efficiency: The bar-type design allows for easy integration into the edges, sides, or narrow recesses of a device enclosure. Low Power Consumption: Typically utilizing advanced display technologies (such as IPS LCD), these screens offer excellent viewing angles and color fidelity while maintaining controllable power consumption—a critical factor for battery-powered devices.

Developer-Friendly: The wide array of interface options and the maturity of the market mean that comprehensive driver support (including Arduino libraries, STM32 HAL libraries, LVGL examples, etc.) and technical assistance are readily available, significantly shortening the development cycle.

Cost-Effective: As a mature component utilized in high-volume applications, this type of screen offers exceptional value for money. Specifically, on the 1.47-inch model, the touch screen flex cable is integrated directly with the LCD flex cable; this single-cable design conserves space on the mainboard and simplifies the overall product design process.

II. Typical Application Scenarios:

Smart bands/watches, Bluetooth earbuds, smart home control panels, portable instrumentation, DIY projects and hacker devices, industrial equipment, etc.

     The 1.47-inch small-format "bar-type" display recommended by Manager Huang of Shenzhen Hongjia Technology offers a truly outstanding solution for developers of compact smart devices. Thanks to its unique dimensions, high resolution, dual-interface support, and low-power characteristics, it perfectly meets the demands for compact design, extended battery life, and crisp information display. Furthermore, Shenzhen Hongjia Technology offers customized services tailored to specific client requirements. Backed by 12 years of industry experience—and currently serving numerous Fortune 500 companies worldwide—we provide a comprehensive, one-stop customization service covering display screens (ranging from 1.14 inches to 12.1 inches) and matching touch panels, ensuring you have no concerns regarding after-sales support (including a 36-month warranty). Our company maintains an extensive inventory of standard products featuring a full range of sizes and interface options; we warmly invite you to contact us via email for inquiries.