LSC028I40-S-V1 2.83 inch TFT-LCD Module 240x320 262K Colors
1. Executive Summary & Product Positioning
The LSC028I40-S-V1 is a 2.83-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 panel size is 2.83 inch and the resolution is 240(RGB)*320, the panel can display up to 262k colors. This module is a COG (Chip-on-Glass) + FPC + B/L (Backlight) + CTP (Capacitive Touch Panel) construction. The product specification was first released on 2026-07-08.
Product Positioning: This 2.83-inch module with integrated CTP is well-suited for a wide range of applications requiring a compact, high-quality display with a wide viewing angle, a simple SPI interface, and touch screen functionality. It is ideal for handheld devices, portable instruments, smart home controllers, and other interactive 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: 2.83-inch diagonal, a-Si TFT active matrix, transmissive, IPS (In-Plane Switching). Resolution is 240(RGB) × 320 pixels.
- Driver Circuit: The module integrates the JD9853 driver IC, communicating via a 4-SPI (4-Wire Serial Peripheral Interface).
- Backlight Unit (B/L): A white LED backlight with 6 Chip-White LEDs configured in parallel. The typical driving condition is IF=120mA, Vf=3V (TYP).
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L + CTP. The total module (TP+LCM) size is 90.4 × 90.4 × 3.4 mm (H×V×D).
- Interface: The module communicates via a 15-pin FPC connector. The display interface is 4-Wire SPI (Serial Peripheral Interface). The CTP interface is a dedicated I2C-style interface.
- Display Mode: Transmissive, IPS.
- Viewing Direction: Full viewing angle (IPS).
- Touch Panel: Integrated OGS (One Glass Solution) Capacitive Touch Panel (CTP) with COB (Chip-on-Board) IC. Surface hardness ≥5H (500gf).
- RoHS: All materials are compliant with RoHS standards.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 2.83 inches |
| Resolution (Dots) | 240(RGB) × 320 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si, IPS |
| Module Construction | COG+FPC+B/L+CTP |
| Color Depth | 262K Colors |
| Input Data Interface (LCD) | 4-Wire SPI |
| Driver IC | JD9853 |
| Module Size (H×V×D) (TP+LCM) | 90.4 × 90.4 × 3.4 mm |
| Active Area (H×V) | 43.2 × 57.60 mm |
| Display Mode | Transmissive, IPS |
| Viewing Direction | Full (IPS) |
| Backlight Type | 6 Chip-White LEDs, Parallel |
| Capacitive Touch Panel (CTP) | Integrated OGS, 4-line 1-channel interface |
| 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 | 4.0 | V | Note1 Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | - |
| Storage temperature | TSTR | -30 | 80 | °C | - |
3.3 Electrical Characteristics
3.3.1 Recommended DC Characteristics
Condition: Ta=25°C.
| Item | Symbol | Min | Typ | Max | Unit | Remark |
|---|---|---|---|---|---|---|
| Supply voltage | VCC | 2.6 | 2.8 | 3.3 | V | Note1 |
| Supply voltage | IOVCC | 1.65 | 1.8 | 3.3 | V | Note1 |
| Input Voltage (L level) | VIL | 0 | --- | 0.3*IOVCC | V | Note1 |
| Input Voltage (H level) | VIH | 0.7*IOVCC | --- | IOVCC | V | Note1 |
3.3.2 Backlight LED Characteristics
The backlight consists of 6 Chip-White LEDs in parallel. The typical driving condition is IF=120mA, Vf=3V (TYP).
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Forward Voltage | Vf | - | 3 | - | V |
| Forward Current (Total) | IF | - | 120 | - | mA |
3.4 Interface Pin Assignment (15-Pin FPC + 15-Pin CTP FPC)
The module communicates via a combined 15-pin LCM and a 15-pin CTP FPC connector. The LCD interface is 4-Wire SPI. The CTP uses a dedicated induction channel interface.
3.4.1 LCM Pin Description
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | LEDK | P | Power for LED backlight cathode |
| 2 | GND | P | Ground |
| 3 | TE | O | Tearing effect signal is used to synchronize MCU to frame memory writing. |
| 4 | SDA | I/O | Serial data input/output PIN |
| 5 | RS | I | Command and Data select pin |
| 6 | SCK | I | Serial clock pin |
| 7 | CS | I | Chip select pin |
| 8 | RESET | I | Reset pin. |
| 9 | IOVCC | P | power supply |
| 10 | VCC | P | power supply |
| 11 | VCC | P | power supply |
| 12 | GND | P | Ground |
| 13 | GND | P | Ground |
| 14 | LEDA | P | Power for LED backlight anode |
| 15 | LEDA | P | Power for LED backlight anode |
3.4.2 CTP Pin Description
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | GND | P | Ground |
| 2 | S12 | I/O | Induction Channel |
| 3 | S11 | I/O | Induction Channel |
| 4 | S10 | I/O | Induction Channel |
| 5 | S9 | I/O | Induction Channel |
| 6 | S8 | I/O | Induction Channel |
| 7 | S7 | I/O | Induction Channel |
| 8 | S6 | I/O | Induction Channel |
| 9 | S5 | I/O | Induction Channel |
| 10 | GND | P | Ground |
| 11 | S4 | I/O | Induction Channel |
| 12 | S3 | I/O | Induction Channel |
| 13 | S2 | I/O | Induction Channel |
| 14 | S1 | I/O | Induction Channel |
| 15 | GND | P | Ground |
3.5 Serial Interface Timing (4-line serial)
The module communicates via a 4-wire SPI interface. The timing parameters for this interface are as follows:
Condition: VDDI=1.65 to 3.3V, VDD=2.4 to 3.3V, AGND=DGND=0V, Ta=25℃.
3.5.1 Reset Input Timing
The reset pin (RESX) has specific timing requirements for proper initialization.
| Symbol | Parameter | Related Pins | Min. | Max. | Unit |
|---|---|---|---|---|---|
| tRW | Reset pulse width | RESX | 10 | - | µs |
| tRT | Reset complete time | - | - | 5 (Note 5) | ms |
| tRT | Reset complete time | - | - | 120 (Note 6, 7) | ms |
Note: A reset pulse shorter than 5µs is rejected. A pulse longer than 10µs initiates a reset.
3.5.2 4-Line Serial Interface Timing
The timing parameters for the 4-wire serial interface are as follows:
| Signal | Symbol | Parameter | MIN | MAX | Unit |
|---|---|---|---|---|---|
| CSX | TCSS | Chip select setup time (write) | TBD | - | ns |
| CSX | TCSH | Chip select hold time (write) | TBD | - | ns |
| CSX | TCHW | Chip select "H" pulse width | TBD | - | ns |
| SCL | TSCYCW | Serial clock cycle (Write) | TBD | - | ns |
| SCL | TSHW | SCL "H" pulse width (Write) | TBD | - | ns |
| SCL | TSLW | SCL "L" pulse width (Write) | TBD | - | ns |
| D/CX | TDCS | D/CX setup time | TBD | - | ns |
| SDA (DIN) | TSDS | Data setup time | TBD | - | ns |
Note: The manufacturer has marked the timing parameters as "TBD" (To Be Defined). For precise timing requirements, please refer to the full official datasheet or the JD9853 driver IC specification.
3.6 Electro-Optical Characteristics
Measuring Condition: Ta=25°C, dark room.
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|---|
| Response time | Tr+Tf | θx = θy =0 | -- | 35 | 40 | ms | Note 1 |
| Contrast Ratio | CR | θx = θy =0 | 800 | 1000 | -- | - | Note 2 |
| Transmittance | T% | θx = θy =0 | -- | 4.8 | -- | % | - |
| Color Chromaticity (White) | W x | θx = θy =0 | -- | 0.299 | -- | - | - |
| Color Chromaticity (White) | W y | θx = θy =0 | -- | 0.330 | -- | - | - |
| Viewing angle (IPS) | θT, θB, θL, θR | CR > 10 | 80 | 85 | -- | Deg. | Note 3 |
3.7 Design Notes from Documentation
- Mechanical Design Recommendations:
- Suggested housing visible area (shell opening) should be 0.3mm smaller than the VAmds (Viewing Area) on each side. (Note 7)
- Suggested housing foam opening should be 0.6mm larger than the VAmds on each side. (Note 8)
- The edge of the Touch Panel (TP) must not contact any metal conductor. (Note 9)
- B/L Driver: The backlight consists of 6 Chip-White LEDs in parallel (120mA total). A constant current driver for the backlight is required.
- Interface: The module uses a 4-wire SPI interface for the LCD. The CTP uses a separate 15-pin connector with induction channels (S1-S12).
- Reset Timing: The reset pin (RESX) must pulse low for at least 10µs. The device will then be ready for commands after up to 5ms (or 120ms under certain conditions). A pulse shorter than 5µs is ignored.
- ESD Protection: Silver paste (银浆点) is used for grounding. A yellow insulating tape (黄色绝缘胶纸) is placed on the back for safety.
- IPS Display: This module features IPS (In-Plane Switching) technology providing 85-degree wide viewing angles in all four directions.
- CTP Specifications: The CTP is OGS (One Glass Solution) with COB IC. Surface hardness ≥5H (500gf). Transmittance ≥85%. Operating Environment: -20°C~+70°C, ≤90%RH.
- RoHS: All materials are ROHS compliant.
- General Tolerance: ±0.2mm for dimensions with decimal points, ±1/4° for angles.
4. Application Guidelines & Critical Notes
- Power Supply: The module requires VCC (2.8V typical) and IOVCC (1.8V typical) power supplies. Ensure the power supplies are stable and have low ripple. The absolute maximum rating for VCC is 4.6V and for IOVCC is 4.0V.
- Interface (LCD): This module uses a standard 4-wire SPI protocol. The host processor must be configured for this protocol.
- Interface (CTP): The integrated CTP communicates via induction channels (S1-S12). This indicates a self-capacitance type touch sensor. A dedicated CTP controller IC (e.g., COB type on the FPC) will handle the processing. The host processor needs to manage the communication with this CTP controller, likely through an I2C or SPI interface connected to the controller's pins.
- Backlight Driver (External): A constant current driver is required to supply the backlight via the LEDA (Pins 14, 15) and LEDK (Pin 1) pins. The required driving condition is 120mA total current at 3V typical forward voltage.
- Reset: Ensure the RESET pin (Pin 8) is driven low for at least 10µs during power-on. After releasing reset, wait for the specified 5ms (or 120ms) before sending the first command.
- Mechanical Mounting: Follow the mechanical design notes for the enclosure and foam opening to ensure proper fit and avoid damage to the TP and LCD.
- 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, TP, or FPC. Ground yourself to prevent electrostatic discharge (ESD). The yellow insulating tape on the back should not be removed during installation.
5. Conclusion & Design-In Support
The LSC028I40-S-V1 from Lesson Smart Display Technology is a 2.83-inch IPS TFT-LCD module with an integrated Capacitive Touch Panel (CTP) and a 4-wire SPI interface. It features a wide viewing angle (85° all directions), 1000:1 contrast ratio, a robust mechanical design, and an OGS touch panel for an intuitive user interface. It is a reliable, high-quality display solution suitable for a wide variety of interactive 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 (JD9853) datasheet for detailed initialization and timing parameters.
- Design a clean 2.8V/1.8V power supply for the LCD. Design a backlight constant current driver circuit capable of delivering 120mA at up to 3.3V.
- Configure the host processor's SPI interface to match the timing specifications detailed in this datasheet. Ensure the CTP controller on the FPC is properly configured for communication with the host.
- 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.
