LS0114I01-M-V1 1.14 inch TFT-LCD Module 135x240 262k Colors 8-bit 8080
1. Executive Summary & Product Positioning
The LS0114I01-M-V1 is a 1.14-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). It is composed of a TFT-LCD panel, a driver circuit, and a backlight unit. The panel size is 1.14 inch and the resolution is 135(RGB)*240, the panel can display up to 262k colors.
Product Positioning: This module features a compact 1.14-inch IPS panel, offering superior viewing angles (up to 85 degrees in all directions) and good color reproduction in a very small footprint. It is designed for space-constrained applications where a high-quality display is required. Typical uses include smart wearables, portable instruments, small control panels, and other human-machine interface (HMI) 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: 1.14-inch diagonal, a-Si TFT active matrix, transmissive, IPS (In-Plane Switching) mode. Resolution is 135(RGB) × 240 pixels with an active area of 14.86 (H) × 24.89 (V) mm.
- Backlight Unit (B/L): A white LED backlight with 1 Chip-White LED. The typical driving condition is IF=20mA, VF=3.0V (TYP). The typical luminance is 400 cd/m².
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L. The module outline dimensions are 17.6 (W) × 33.16 (H) × 1.2 (D) mm (Tolerance: ±0.1mm).
- Interface: The module communicates via a 14-pin FPC connector. The display interface is an 8-bit 8080 parallel interface.
- Display Mode: Transmissive, IPS.
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 1.14 inches |
| Resolution (Dots) | 135(RGB) × 240 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si, IPS |
| Module Construction | COG+FPC+B/L |
| Color Depth | 262K Colors |
| Viewing Direction | IPS (All Views) |
| Input Data Interface | 8-bit 8080 Parallel |
| Module Size (W×H×D) | 17.6 × 33.16 × 1.2 mm (Tolerance ±0.1mm) |
| Active Area (H×V) | 14.86 × 24.89 mm |
| Pixel Arrangement | RGB Stripe |
| Display Mode | Transmissive, IPS |
| Backlight Type | 1 Chip-White LED (Side-Light Type) |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
3.2 Absolute Maximum Ratings (Ta=25°C)
Stress beyond those listed may cause permanent damage.
| Parameter | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage (VDD) | VDD | -0.3 | 4.6 | V | Note1 Note2 |
| Supply voltage (IOVCC) | IOVCC | -0.3 | 4.0 | V | Note1 Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1 Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1 Note2 |
3.3 Electrical Characteristics (Ta=25°C)
3.3.1 Typical Operating Conditions
Condition: VDDI=1.65 to 3.3V, VDD=2.4 to 3.3V, AGND=DGND=0V, Ta=25°C.
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage (Digital) | VDD | 2.4 | 2.8 | 3.3 | V |
| I/O supply voltage | VDDI | 1.65 | 1.8 | 3.3 | V |
3.3.2 Backlight LED Characteristics
The backlight consists of 1 Chip-White LED.
| Parameter | Symbol | Typ | Unit |
|---|---|---|---|
| Forward Voltage | VF | 3.0 | V |
| Forward Current | IF | 20 | mA |
3.4 Interface Pin Assignment (14-Pin FPC)
Connector: 14-pin FPC. Interface: 8-bit 8080 Parallel.
| Pin No. | Pin Name | Function |
|---|---|---|
| 1 | GND | Ground |
| 2 | LEDK | Backlight Cathode |
| 3 | LEDA | Backlight Anode |
| 4 | RES | Reset signal (Active low) |
| 5 | CS | Chip select (Active low) |
| 6 | RS/DCX | Data/Command selection (High: Data, Low: Command) |
| 7 | WR | Write signal (Active low) |
| 8 | RD | Read signal (Active low) |
| 9 | DB0 | Data bus (LSB) |
| 10 | DB1 | Data bus |
| 11 | DB2 | Data bus |
| 12 | DB3 | Data bus |
| 13 | DB4 | Data bus |
| 14 | DB5 | Data bus |
3.5 Electro-Optical Characteristics (Ta=25°C)
| Item | Condition | Spec | Unit |
|---|---|---|---|
| Luminance (IF=20mA) | θx = θy = 0° | 400 (Typ) | cd/m² |
| Viewing Angle (IPS) | CR > 10 | 85 (Typ) all directions | Deg. |
3.6 Design Notes from Documentation
- B/L Driver: The backlight driving condition is IF=20mA, VF=3.0V (TYP). A constant current source is recommended.
- Mechanical: Tolerance of segments to edge of glass: ±0.2mm.
- Housing: It is recommended that the housing visual area be at least 0.3mm smaller than the VA (Viewing Area) on each side. The housing foam window should be at least 0.6mm larger than the VA on each side.
- TP: The TP edge should not contact metal conductors.
4. Application Guidelines & Critical Notes
- Power Supply: The module requires a 2.8V (Typ.) power supply for VDD and 1.8V (Typ.) for VDDI. Ensure the power supply ripple is minimized.
- Interface: This module uses a standard 8-bit 8080 parallel interface. The microcontroller must be configured for this protocol.
- Backlight Driver (External): An external constant current driver is required to supply a typical current of 20mA at a forward voltage of 3.0V.
- Reset: A hardware reset pin (RES, Pin 4) is provided. A reset pulse duration as per the driver IC specification is required.
- 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 LS0114I01-M-V1 from Lesson Smart Display Technology is a compact 1.14-inch TFT-LCD module with an IPS panel and a resolution of 135×240. It is a small, low-power solution suitable for a variety of embedded display applications requiring a wide viewing angle in a compact form factor.
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 command initialization.
- Design a clean 2.8V/1.8V power supply and a backlight constant current driver circuit capable of delivering 20mA.
- 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 space-constrained applications.
