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3 Inch 240×400 RGB IPS TFT LCD Module 45pin 400nit - China Suppliers & Factory Direct Price
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.
- IPS Panel · Full Viewing Angle
- Resolution: 240×400
- Brightness: 400 cd/m²
- Driver IC: ST7796PI
- RGB Interface · 45 Pins
- 262K Colors
- Operating Temp: -20℃ ~ +70℃
- Touch Screen: Optional
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 |
| Color Depth | 262K |
| Driver IC | ST7796PI |
| LCM (W × H × 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 Connect. |
| 43 | NC(YD) | Not Connect. |
| 44 | NC(XL) | Not Connect. |
| 45 | NC(YU) | Not Connect. |
Frequently Asked Questions
Q
What is the interface type of the H030BQ45I4003 LCD module?
The H030BQ45I4003 uses an RGB interface with 45 pins. It supports multiple interface modes including MCU 8080 parallel (8-bit, 9-bit, 16-bit, 18-bit) and RGB (16-bit, 18-bit), selectable via the IM0/IM1/IM2 pins.
Q
Does the H030BQ45I4003 support touch screen functionality?
By default, the H030BQ45I4003 does not include a touch screen. However, touch screen support is available as an optional customization. You can contact the manufacturer to configure this option according to your project requirements.
Q
What driver IC does this 3-inch TFT LCD module use?
The H030BQ45I4003 is driven by the ST7796PI IC, which provides reliable performance and broad compatibility with common development platforms such as STM32 microcontrollers, Arduino, and Raspberry Pi.
Q
What are the operating and storage temperature ranges for this LCD module?
The H030BQ45I4003 supports an operating temperature range of -20℃ to +70℃, making it suitable for industrial environments. The storage temperature range is -30℃ to +80℃, ensuring durability during transportation and warehousing.
Q
What applications is the H030BQ45I4003 3-inch TFT LCD suitable for?
This module is widely used in industrial control panels, smart home devices, handheld POS terminals, smart water meters, beauty devices, smart small appliances, and portable medical instruments. Its IPS full-viewing-angle panel and wide temperature range make it ideal for demanding environments.
Q
Can the FPC length and brightness be customized for the H030BQ45I4003?
Yes. The H030BQ45I4003 supports customization of the FPC (Flexible Printed Circuit) length, interface mode, backlight brightness, and touch screen options. This flexibility makes it easy to integrate into a wide range of product designs and form factors.