3 inch Bar Type TFT LCD Display MIPI ST7701

Product Overview of Bar Type TFT LCD Display

This 3.0-inch bar type TFT LCD display touch module (model: TFT-H030B07ZCIST8C24), launched by HOTHMI, adopts a normally black transmissive TFT panel, featuring a 268×800 resolution and 16.7M rich colors, with full viewing angle support of U80/D80/R80/L80. The module integrates the ST7701 LCD driver IC and the FT6336U capacitive touch IC, utilizing a high-speed MIPI 2-Lane interface, with typical operating voltages of IOVCC 1.8V, VCI 3.3V, and VDD 3.3V. The backlight consists of 6 white LEDs in series, delivering an industrial-grade high brightness of up to 800 cd/m². Furthermore, its operating temperature ranges from -30℃ to +80℃, and its storage temperature ranges from -40℃ to +90℃, making it perfectly adaptable to various complex environments requiring high-reliability bar type display solutions.

Core Technology Highlights

Unique Form Factor of Bar Type TFT LCD Display

Distinct from traditional 4:3 or 16:9 screens, this module features a bar-type resolution of 268×800. This design is ideally suited for installation on narrow edges, side panels, or vertical surfaces of equipment, maximizing space utilization and enhancing the modern technological aesthetic of overall industrial design.

800 cd/m² High Brightness for Sunlight Readability

The Bar Type TFT LCD Display module incorporates a backlight system composed of 6 high-efficiency white LEDs in series (with a typical driving voltage of 18.2V ~ 19.6V at a standard test current of 20mA). Its typical brightness reaches up to 800 cd/m², ensuring that content remains clearly visible even under direct strong sunlight in outdoor environments.

IPS Full View Angle Technology for Color Accuracy

Adopting full-view IPS display technology, the viewing angles reach an ultra-wide 80° in all directions. This means that no matter from which oblique angle a user views the device, the screen maintains consistent chromaticity and contrast, completely avoiding the color shift, dimming, or image inversion issues common with TN panels.

Robust Industrial-Grade Wide Temperature Tolerance

This Bar Type TFT LCD Display fully complies with industrial-grade standards in component selection and process packaging. Its operating temperature range reaches -30℃ ~ +80℃, and its storage temperature range extends to -40℃ ~ +90℃. Whether deployed in harsh winter outdoor conditions in the north or within enclosed, high-heat industrial cabinets, it ensures stable, uninterrupted operation of core driving and capacitive touch functions over extended periods.

Pin Configuration and Interface Definition

The Bar Type TFT LCD Display module connects to the main control board via a 24-Pin Flexible Printed Circuit, integrating both MIPI display data channels and I2C touch signal channels.

Core Application Scenarios of Bar Type TFT LCD Display

Due to its unique bar-type form factor and exceptional environmental tolerance, this 3.0-inch bar type TFT LCD display perfectly suits the following mid-to-high-end hardware device upgrades:

• Smart Home Control Panels: Ideal for embedding into smart wall switches, 86-type flush-mount touch multi-split systems, and high-end kitchen appliances (such as smart range hoods and ovens) with narrow control panels.
• Industrial Instrumentation and Automation Equipment: Suitable for high-density cabinet display units, industrial control handheld terminals, and rail-mounted instruments where space is limited and operating temperature requirements are extremely demanding.
• Automotive Long-Strip Center Consoles and Secondary Screens: Can be used for electronic rearview mirror display bars, side auxiliary status displays on dashboards, and long-strip streaming menu bars on central control consoles in automobiles or two-wheeled electric vehicles.
• New Retail and Smart Digital Signage: Widely applied in smart vending machine shelf price tag screens and narrow-edge interactive multimedia advertising displays; its high brightness delivers excellent visual appeal under strong mall lighting.

Technical FAQ of Bar Type TFT LCD Display

Q1: Why does this module choose the MIPI DSI interface, and what are its advantages?

A1: With a 268×800 resolution, if a traditional RGB parallel interface were used, it would require up to 20+ pins, making hardware routing extremely complex. This module, however, adopts a MIPI DSI 2-Lane interface, utilizing just 4 high-bandwidth differential signal lines (D0, D1, and CLK) to achieve high-speed transmission of large data volumes. It not only significantly saves pins on the main controller chip (such as a Linux SoC or high-end MCU) but also effectively reduces electromagnetic interference on the PCB, ensuring robust anti-interference performance in industrial environments.

Q2: How should the module’s backlight circuit be designed? Can it be directly connected to 3.3V?

A2: No, it cannot be directly connected to 3.3V. The module’s backlight consists of 6 white LEDs in series, with an operating voltage range of 18.2V ~ 19.6V and a standard operating current of 20mA. When designing the main control board, a dedicated constant-current boost driver chip (such as a Boost chip commonly used for LED backlight driving) must be configured to step up the main power supply (e.g., 5V or 12V) to approximately 19V and output a constant 20mA current into LEDA (Pin 9). Otherwise, the backlight will not illuminate properly, or overcurrent may cause burnout.