LS024I45-MP-V1 2.4 inch TFT-LCD Module 240x320 262K Colors
1. Executive Summary & Product Positioning
The LS024I45-MP-V1 is a 2.4-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 2.4 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) construction.
Product Positioning: This 2.4-inch module is well-suited for a wide range of applications requiring a compact, high-quality display with a wide viewing angle. It is ideal for handheld devices, portable instruments, smart home controllers, 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: 2.4-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 MIPI DSI Interface.
- Backlight Unit (B/L): A white LED backlight with 4 Chip-White LEDs configured in parallel. The typical driving condition is IF=80mA, Vf=2.8~3.2V.
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L. The LCM module dimensions are 42.72 × 60.0 × 2.20 mm (from drawing).
- Interface: The module communicates via a 24-pin FPC connector. The display interface is MIPI DSI (2-Lane).
- Display Mode: Transmissive, IPS.
- Viewing Direction: Full viewing angle (IPS).
- RoHS: All materials are compliant with RoHS standards.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 2.4 inches |
| Resolution (Dots) | 240(RGB) × 320 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si, IPS |
| Module Construction | COG+FPC+B/L |
| Color Depth | 262K Colors |
| Input Data Interface | MIPI DSI (2-Lane) |
| Driver IC | JD9853 |
| LCM Outer Dimension (W×H×D) | 42.72 × 60.0 × 2.20 mm |
| LCD Active Area (H×V) | 36.72 × 48.96 mm |
| Display Mode | Transmissive, IPS |
| Viewing Direction | Full (IPS) |
| Backlight Type | 4 Chip-White LEDs, Parallel |
| Operating Temperature | -10°C to +70°C |
| Storage Temperature | -20°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 | 3.6 | V | Note1 Note2 |
| Supply voltage | IOVCC | -0.3 | 3.6 | V | Note1 Note2 |
| Operating temperature | TOPR | -10 | 70 | °C | - |
| Storage temperature | TSTR | -20 | 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 4 Chip-White LEDs in parallel. The typical driving condition is IF=80mA, Vf=2.8~3.2V.
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Forward Voltage | Vf | 2.8 | - | 3.2 | V |
| Forward Current (Total) | IF | - | 80 | - | mA |
3.4 Interface Pin Assignment (24-Pin FPC)
The module communicates via a 24-pin FPC connector. The interface is MIPI DSI (2-Lane).
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | GND | P | Ground |
| 2 | IOVCC | P | Power voltage |
| 3 | ID/GND | P | Ground |
| 4 | GND | P | Ground |
| 5 | LEDK | P | LED cathode |
| 6 | LEDA | P | LED anode |
| 7 | NC | - | Not connect |
| 8 | TP_SDA/NC | - | TP I2C data / Not connect |
| 9 | TP_INT/NC | - | TP interrupt / Not connect |
| 10 | TP_SCL/NC | - | TP I2C clock / Not connect |
| 11 | TP_VDD/NC | - | TP power / Not connect |
| 12 | TP_RESET/NC | - | TP reset / Not connect |
| 13 | TP_GND/NC | - | TP ground / Not connect |
| 14 | GND | P | Ground |
| 15 | D0N | I | Negative MIPI differential data inputs (Data lane 0) |
| 16 | D0P | I | Positive MIPI differential data inputs (Data lane 0) |
| 17 | CLKN | I | Negative MIPI differential clock inputs |
| 18 | CLKP | I | Positive MIPI differential clock inputs |
| 19 | GND | P | Ground |
| 20 | RST | I | Reset signal |
| 21 | TE | O | Tearing effect output pin |
| 22 | GND | P | Ground |
| 23 | VCC | P | Power voltage |
| 24 | VCC | P | Power voltage |
3.5 MIPI DSI Horizontal Timing
The module supports MIPI DSI Video mode with 24-bit RGB packet format. The horizontal timing parameters for a resolution of 240x320 are defined as follows:
Condition: TA=25°C, IOVCC=1.8V, VCI=2.8V.
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| HS low pulse width | HS | - | 100 | - | - | ns |
| Horizontal back porch | HBP | - | 300 | - | - | ns |
| Horizontal front porch | HFP | - | 800 | - | - | ns |
| Horizontal blanking period | HBLK | HS+HBP+HFP | - | 1.5 | - | us |
| Horizontal active area | HDISP | 240 pixels | - | 40 | - | us |
3.6 Electro-Optical Characteristics
Measuring Condition: Ta=25°C, dark room, 15min warm-up time.
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Response time | Tr+Tf | θx = θy =0 | -- | -- | 35 | ms |
| Contrast Ratio | CR | θx = θy =0 | 1000 | 1500 | -- | - |
| Transmittance | T% | θx = θy =0 | 4.5 | 4.8 | -- | % |
| Viewing angle (L/R/U/D) | ΘL, ΘR, ΘU, ΘD | CR > 10 | -- | 80 | -- | Deg. |
3.7 Design Notes from Documentation
- Mechanical Design Recommendations:
- Suggested housing visible area (shell opening) should be 0.3mm smaller than the VAmds (IPS 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 driving condition is IF=80mA, Vf=2.8~3.2V (TYP) for 4 parallel LEDs. A yellow insulating tape (黄色绝缘胶纸) is used for insulation.
- Interface: The module uses a MIPI DSI interface. The pinout includes dedicated TP (touch panel) pins (8-13) which are marked as "NC/TP", suggesting the module may support a future capacitive touch panel addition.
- ESD Protection: Silver paste (银浆) is used for grounding. A yellow insulating tape is placed on the back to prevent short circuits.
- IPS Display: This module features IPS (In-Plane Switching) technology providing full viewing angles.
- RoHS: All materials are ROHS compliant.
- Connector: The FPC has 24 pins. Document also shows a "yellow insulating tape (易撕贴手撕位)" for easy handling.
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.
- Interface: This module uses a standard MIPI DSI (2-lane) interface. The host processor must be configured for this protocol.
- Backlight Driver (External): An external constant current driver is required to supply the backlight via the LEDA and LEDK pins. The required driving condition is 80mA total current at 2.8V~3.2V forward voltage. The backlight consists of 4 parallel LEDs.
- Mechanical Mounting: Follow the mechanical design notes for the enclosure and foam opening to ensure proper fit and avoid damage.
- Reset: A hardware reset pin (RST, Pin 20) is provided. Ensure proper reset timing as per the JD9853 driver IC specifications.
- Operating Temp: The module operates from -10°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 -20°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). The yellow insulating tape on the back should not be removed during installation.
5. Conclusion & Design-In Support
The LS024I45-MP-V1 from Lesson Smart Display Technology is a 2.4-inch IPS TFT-LCD module with a 2-lane MIPI DSI interface. It features an IPS display for full viewing angles, a high contrast ratio (1500:1 typical), and a robust mechanical design with ESD protection. 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 (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 80mA at up to 3.2V.
- Configure the host processor's MIPI DSI 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.
