LS0144T10-M-V1 1.44 inch TFT-LCD Module 128x128 262k Colors TN
1. Executive Summary & Product Positioning
The LS0144T10-M-V1 is a 1.44-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 1.44 inch and the resolution is 128(RGB)*128, the panel can display up to 262k colors.
Product Positioning: This module features a compact 1.44-inch TN (Twisted Nematic) panel. It is a cost-effective solution for applications that require a small, reliable, and easy-to-integrate color display with a parallel interface for faster data transfer. Typical uses include portable instruments, smart home devices, and other embedded 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: 1.44-inch diagonal, a-Si TFT active matrix, transmissive, TN (Twisted Nematic) mode. Resolution is 128(RGB) × 128 pixels with an active area of 25.5 (H) × 26.5 (V) mm.
- Driver IC: The module uses the NV3023B driver IC.
- Backlight Unit (B/L): A white LED backlight with 2 Chip-White LEDs configured in parallel. The typical driving condition is IF=40mA and Vf=3.2V (Typ.).
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L. The module outline dimensions are 29.00 (H) × 34.41 (V) × 2.2 (D) mm.
- Interface: The module communicates via a 27-pin FPC connector. It supports an 8bit 8080 parallel interface.
- Viewing Direction: TN (12 O'Clock).
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 1.44 inches |
| Resolution (Dots) | 128(RGB) × 128 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si, TN |
| Module Construction | COG+FPC+B/L |
| Color Depth | 262K Colors |
| Viewing Direction | TN (12 O'Clock) |
| Input Data Interface | 8bit 8080 (Parallel MCU) |
| Driver IC | NV3023B |
| Module Size (H×V×D) | 29.00 × 34.41 × 2.2 mm |
| Active Area (H×V) | 25.5 × 26.5 mm |
| Display Mode | Transmissive, TN |
| Backlight Configuration | 2 Chip-White LED Parallel |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
3.2 Absolute Maximum Ratings
Stress beyond those listed may cause permanent damage.
| Parameter | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage (VCC) | VCC | -0.3 | 4.8 | V | Note1 Note2 |
| Supply voltage (IOVCC) | IOVCC | -0.3 | 3.6 | V | Note1 Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1 Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1 Note2 |
3.3 Electrical Characteristics
3.3.1 Recommended Operating Conditions
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage (VCC) | VCC | 2.5 | 2.75 | 4.8 | V |
| I/O supply voltage | IOVCC | 1.65 | 1.8 | 3.6 | V |
| Input voltage (L level) | VIL | 0 | -- | 0.3*IOVCC | V |
| Input voltage (H level) | VIH | 0.7*IOVCC | -- | IOVCC | V |
3.3.2 Backlight LED Characteristics
The backlight consists of 2 Chip-White LEDs in Parallel. The backlight drive condition is IF=40mA, Vf=3.2V (TYP).
| Parameter | Symbol | Typ | Unit |
|---|---|---|---|
| Forward Voltage (Total) | Vf | 3.2 | V |
| Forward Current | If | 40 | mA |
3.4 Interface Pin Assignment (27-Pin FPC)
Connector: 27-pin FPC. Interface: 8bit 8080 Parallel MCU.
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | VDD | P | Power supply |
| 2 | GND | P | Ground |
| 3, 11, 13, 15, 17, 19, 21, 23, 25 | NC | -- | No connection |
| 4 | TE | O | Tearing effect output pin to synchronize MCU to frame writing |
| 5 | CS | I | Chip Select Pin ("Low Active") Pull down when chip accessible |
| 6 | RS | I | Reuse Pin: 8080: Distinguish Data ('1') or Command ('0'). SPI: Used as 'SCL' clock. If not used, connect to VSS. |
| 7 | RD | I | 8080-parallel interface: used as 'Read' enable. If not used, please connect to VSS. |
| 8 | WR | I | 8080-parallel interface, used as write enable. SPI 4-wire: used as D/CX. |
| 9 | RESET | I | Reset signal (Active low) |
| 10, 12, 14, 16, 18, 20, 22, 24 | D0-D7 | I | Data bus (8-bit). |
| 26 | LEDK | P | Power for LED backlight cathode |
| 27 | LEDA | P | Power for LED backlight anode |
3.5 Timing Characteristics
3.5.1 Reset Timing
| Symbol | Parameter | Min. | Max. | Unit |
|---|---|---|---|---|
| tRW | Valid Reset low pulse width | 10 | -- | μs |
| tRT | Valid Reset Complete width (Sleep In mode) | -- | 5 | ms |
| tRT | Valid Reset Complete width (Sleep Out mode) | -- | 120 | ms |
3.5.2 Parallel MCU 8-bit Bus Timing (Asynchronous Mode)
Test conditions: IOVCC 1.65 to 3.6V, VCI=2.6 to 3.6V, AGND=GND=0V, Ta=-30 to 70 °C.
| Signal | Symbol | Parameter | Min | Max | Unit |
|---|---|---|---|---|---|
| D/CX | TAST | Address Setup Time | 0 | -- | ns |
| D/CX | THAT | Address Hold Time (W/R) | 10 | -- | ns |
| WRX | TWC | Write Cycle | 80 | -- | ns |
| WRX | TWRH | Control Pulse H Duration | 40 | -- | ns |
| WRX | TWRL | Control Pulse L Duration | 40 | -- | ns |
| D[7:0] | TDST | Data Setup Time (Write) | 10 | -- | ns |
| D[7:0] | TDHT | Data Hold Time (Write) | 10 | -- | ns |
3.6 Electro-Optical Characteristics
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|---|
| Response time | Tr + Tf | θx = θy =0 | -- | 25 | 30 | ms | Note 1 |
| Contrast Ratio | CR | θx = θy =0 | 300 | 600 | -- | -- | Note 2 |
| Transmittance | T% | θx = θy =0 | 3.9 | 5.5 | -- | % | |
| Color Chromaticity (CIE1931) White | W x, W y | θx = θy =0 | -- | (0.301, 0.327) | -- | -- | |
| Viewing angle (Top) | θT | CR > 10 | -- | 70 | -- | Deg. | Note 3 |
| Viewing angle (Bottom) | θB | CR > 10 | -- | 60 | -- | Deg. | Note 3 |
| Viewing angle (Left) | θL | CR > 10 | -- | 75 | -- | Deg. | Note 3 |
| Viewing angle (Right) | θR | CR > 10 | -- | 75 | -- | Deg. | Note 3 |
3.7 Design Notes
- B/L Driver: The backlight driving condition is IF=40mA, Vf=3.2V (TYP) for 2 parallel LEDs.
- Mechanical: Tolerance of segments to edge of glass: ±0.2mm. TP edge should not contact metal conductors.
- 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.
- RoHS: RoHS compliance.
- Reset: It is necessary to wait 5msec after releasing RESX before sending commands. Also Sleep Out command cannot be sent for 120msec.
- Spike Rejection: A RESX pulse shorter than 5μs will be rejected. A pulse longer than 10μs will initiate a reset.
4. Application Guidelines & Critical Notes
- Power Supply: The module requires a 2.75V (Typ.) power supply for VCC and 1.8V (Typ.) for IOVCC. Ensure the power supply ripple is minimized.
- Interface: This module uses an 8-bit 8080 parallel interface. The microcontroller must be configured for this protocol, managing signals such as CS, RS, RD, WR, and the 8-bit data bus D0-D7.
- Backlight Driver (External): An external constant current driver is required to supply a typical current of 40mA at a forward voltage of 3.2V.
- Reset: A hardware reset pin (RESET, Pin 9) is provided. Ensure a valid low pulse of at least 10μs is applied. Be aware of spike rejection and the appropriate post-reset wait timings.
- 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 LS0144T10-M-V1 from Lesson Smart Display Technology is a compact 1.44-inch TFT-LCD module with a standard 128×128 resolution and a TN display. It is a cost-effective solution for applications that require a small, reliable, and easy-to-integrate color display with a parallel interface for efficient data transfer.
For successful design-in, engineers should:
- Obtain and review the complete, official Product Specification (Revision 1.0) for the full mechanical drawing and the NV3023B driver IC datasheet for detailed command initialization.
- Design a clean 2.75V/1.8V power supply and a backlight constant current driver circuit capable of delivering 40mA at 3.2V.
- Configure the host MCU's parallel interface to match the 8-bit 8080 timing specifications provided in this datasheet.
- 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 versatile display solution for a wide array of embedded systems.
