LS028T38-M-V1 2.8 Inch TFT-LCD Module 240x320 262K Colors
1. Executive Summary & Product Positioning
The LS028T38-M-V1 is a 2.8-inch transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module developed by 立信(万安)智显科技有限公司 (Lesson Smart Display Technology Co., Ltd). The module is composed of a TFT-LCD panel, a driver circuit and a backlight unit. The panel size is 2.8 inch and the resolution is 240(RGB)*320, the panel can display up to 262k colors. This module features a COG (Chip-on-Glass) + FPC + B/L (Backlight) construction. The product specification was first released on 2026-05-11.
Product Positioning: This 2.8-inch module is well-suited for a wide range of applications requiring a compact, high-quality display with a reliable 16-bit 8080 parallel interface. It is ideal for portable instruments, medical devices, industrial controls, and other embedded display systems.
2. Detailed Product Overview & Architecture
The module's architecture is designed for robust performance and easy integration. The primary components include:
- TFT-LCD Panel: 2.8-inch diagonal, a-Si TFT active matrix, transmissive, TN (Twisted Nematic). Resolution is 240(RGB) × 320 pixels.
- Driver Circuit: The module integrates the ILI9341V driver IC, communicating via a 16-bit 8080 parallel interface.
- Backlight Unit (B/L): A white LED backlight.
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L.
- Interface: The module communicates via an FPC connector. The display interface is 16bit 8080.
- Display Mode: Transmissive, TN.
- Viewing Direction: TN (Twisted Nematic) with specific viewing angle (Grayscale Inversion).
- RoHS: All materials are compliant with RoHS standards.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 2.8 inches |
| Resolution (Dots) | 240(RGB) × 320 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si, TN |
| Module Construction | COG+FPC+B/L |
| Color Depth | 262K Colors |
| Input Data Interface | 16bit 8080 |
| Driver IC | ILI9341V |
| Display Mode | Transmissive, TN |
| Viewing Direction | TN (Grayscale Inversion) |
| Backlight Type | LED |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
| Environmental Compliance | RoHS |
3.2 Absolute Maximum Ratings
Stress beyond those listed may cause permanent damage to the device.
| Item | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 4.6 | V | Note1, Note2 |
| Supply voltage | IOVCC | -0.3 | 4.6 | V | Note1, Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1, Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1, Note2 |
Note: Ta = -30 to 70 °C, VDDI=1.65V to 3.3V, VCI=2.5V to 3.3V, VSS=0V
3.3 8080 Series MCU Parallel Interface Timing Characteristics
The module communicates via an 8080 series MCU parallel interface. The timing parameters for this interface are as follows.
Condition: VDDI=1.65 to 3.3V, VCI=2.5V to 3.3V, VSS=0V, Ta=25℃.
Note: The rising time and falling time (Tr, Tf) of input signal are specified at 15 ns or less. Logic high and low levels are specified as 30% and 70% of VDDI for Input signals.
| Signal | Symbol | Parameter | Min | Max | Unit |
|---|---|---|---|---|---|
| CSX | tchw | Chip select "H" pulse width | Min. 5 | - | ns |
| CSX | tcsf | Chip select wait time | Min. 5 | - | ns |
| WRX | twrht | Write to read or read to write timings | Derived | - | ns |
| RDX | trdhf | Read to write or write to read timings | Derived | - | ns |
3.4 Design Notes from Documentation
- Mechanical Design Recommendations:
- A common note across Lesson products: Suggested housing visible area (shell opening) should be 0.3mm smaller than the VAmds (Viewing Area) on each side.
- Suggested housing foam opening should be 0.6mm larger than the VAmds on each side.
- The edge of the Touch Panel (TP) must not contact any metal conductor.
- Interface: The module uses a 16-bit 8080 parallel interface.
- TN Display: This module features TN (Twisted Nematic) technology.
- RoHS: All materials are ROHS compliant.
4. Application Guidelines & Critical Notes
- Power Supply: The module requires VCC (logic supply) and IOVCC (I/O supply) power supplies. Ensure the power supplies are stable and have low ripple. The typical voltage ranges are VDDI=1.65V to 3.3V and VCI=2.5V to 3.3V.
- Interface: This module uses a standard 16-bit 8080 parallel protocol. The host processor must be configured for this protocol.
- Backlight Driver (External): An external backlight driver is required to supply the LED backlight.
- Mechanical Mounting: Follow the mechanical design notes for the enclosure and foam opening to ensure proper fit and avoid damage to the glass and FPC.
- Operating Temperature: The module operates from -20°C to +70°C. Satisfactory display performance is only guaranteed within this range.
- Storage: Store the module in a clean environment, free from dust, moisture, and direct sunlight. Storage temperature range is -30°C to +80°C.
- Handling Precautions: Handle the module with care to avoid damage to the glass or FPC. Ground yourself to prevent electrostatic discharge (ESD).
5. Conclusion & Design-In Support
The LS028T38-M-V1 from Lesson Smart Display Technology is a 2.8-inch TFT-LCD module with a 16-bit 8080 parallel interface. It is a reliable, high-quality display solution suitable for a wide variety of embedded display applications.
For successful design-in, engineers should:
- Obtain and review the complete, official Product Specification (Revision 1.0) for the full mechanical drawing and the driver IC datasheet for detailed initialization and timing parameters.
- Design clean power supplies for VCC and IOVCC.
- Configure the host processor's parallel interface to match the timing specifications detailed in this datasheet.
- Follow the mechanical design guidelines for the enclosure and foam opening to ensure proper fit and avoid damage.
- Contact the manufacturer for evaluation modules, sample requests, and further technical support during the design-in phase.
This module is designed to provide a reliable and vibrant display solution for a wide array of applications.
