Custom 3 inch 240×400 RGB 45pin 400nit IPS TFT LCD Module Manufacturers, Factories
Product Description
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Product Description
H030BQ45I4003 is a 3-inch TFT LCD module. This is a common TFT LCD display found in small electronic devices, featuring a resolution of 240×400, a wide operating temperature range, and suitable for long-term operation in industrial environments. This LCD screen uses an IPS panel, with a full viewing angle, a brightness of 400 cd/m², and supports up to 262K colors. The driving IC is ST7796PI. The interface type is RGB, with 45 pins, making it suitable for connection with development boards such as single-chip microcontrollers or Raspberry Pi, offering strong compatibility and customizability. It supports adjusting the FPC length, interface mode, brightness, and customizing the touch screen. This 3-inch TFT LCD Display is widely used in industrial control, smart home, handheld terminals, medical portable devices, etc., such as industrial instruments, handheld POS machines, smart water meters, beauty devices, smart small appliances, and portable medical instruments. The 3-inch LCD screen provides clear information display for these products, enabling real-time data display and human-computer interaction, enhancing user experience.
Mechanical Drawing
Specification Parameters
| Feature | Spec |
|---|---|
| Model Name | H030BQ45I4003 |
| LCD Size | 3.0 inch |
| Display Format | 240×400 |
| Interface | RGB 45pin |
| Luminance | 400 cd/m² |
| Touch Screen | None, optional |
| Viewing Direction | ALL (IPS Full Viewing Angle) |
| Color Depth | 262K |
| Driver IC | ST7796PI |
| LCM (W x H x D) (mm) | 45.04 × 77.00 × 2.60 |
| Active Area (mm) | 39.24 × 65.40 |
| Operating Temperature | -20℃ ~ +70℃ |
| Storage Temperature | -30℃ ~ +80℃ |
| Operating Voltage | 3.0V |
Interface Definition
| PIN NO | PIN NAME | DESCRIPTION |
|---|---|---|
| 1 | IM0 | The MCU interface mode select, Please see Note1 |
| 2 | IM1 | |
| 3 | IM2 | |
| 4 | RESET | This signal will reset the device and it must be applied to properly initialize the chip. Signal is active low. |
| 5 | VSYNC | Vertical synchronizing input signal for RGB interface operation. |
| 6 | HSYNC | Horizontal synchronizing input signal for RGB interface. |
| 7 | PCLK | Dot clock signal for RGB interface operation. |
| 8 | DE | Data enable signal for RGB interface operation. |
| 9~26 | DB17~DB0 |
In MCU 8080 parallel interface, DB[17:0] are used as data bus: 8-bit I/F: DB[7:0] is used. 9-bit I/F: DB[8:0] is used. 16-bit I/F: DB[15:0] is used. 18-bit I/F: DB[17:0] is used. In RGB interface, DB[17:0] are used as data bus: 16-bit RGB I/F: DB[15:0] are used. 18-bit RGB I/F: DB[17:0] are used. |
| 27 | SDO | SPI interface output pin. The data is outputted on the falling edge of the SCL. |
| 28 | DIN(SDA) | SPI interface input/output pin. The data is latched on the rising edge of the SCL. |
| 29 | RD | Read enable in 8080 MCU parallel interface. Low-active. |
| 30 | WR/SCL | Write enable in MCU parallel interface. In SPI mode, this pin is used as SCL. |
| 31 | RS | Display data/command selection pin in MCU interface. RS='1': display data or parameter. RS='0': register index / command. |
| 32 | CS | Chip selection pin. Low-active. |
| 33~34 | VCC(2.5V~3.3V) | Power supply for analog, booster circuits and I/O system. |
| 35~36 | GND | Power Ground. |
| 37~40 | LEDK4~LEDK1 | Backlight cathode. |
| 41 | LEDA | Backlight anode. |
| 42 | NC(XR) | Not Connected. |
| 43 | NC(YD) | Not Connected. |
| 44 | NC(XL) | Not Connected. |
| 45 | NC(YU) | Not Connected. |
Frequently Asked Questions (FAQ)
What are the core display specifications of the H030BQ45I4003 LCD module?
The H030BQ45I4003 is a 3.0-inch IPS TFT LCD screen with a resolution of 240×400 pixels, 400 cd/m² luminance, full viewing angles, and 262K color reproduction, powered by the ST7796PI driver IC.
Which pin interface does this 3-inch TFT LCD display support?
It comes with a standard 45-pin RGB / MCU interface that can interface seamlessly with common development boards, single-chip microcontrollers (MCU), and Raspberry Pi architectures.
Can this TFT LCD module be customized for specific project requirements?
Yes. Custom options are supported, including adjustments to FPC cable length, pinout and interface modes, backlight luminance enhancement, and adding optional touch screens (capacitive or resistive).
What is the operating temperature range for this display?
The module operates stably across an industrial temperature range from -20℃ to +70℃, with storage tolerance ratings from -30℃ to +80℃, suitable for challenging environments.
What are the main application areas for this 3.0-inch LCD module?
It is broadly utilized across industrial instruments, handheld POS terminals, smart utility water meters, beauty devices, smart home appliances, and portable medical monitoring equipment.
