LS046I02-R-V1 4.59 inch TFT-LCD Module 320x960 16.7M Colors IPS
1. Executive Summary & Product Positioning
The LS046I02-R-V1 is a 4.59-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 4.59 inch and the resolution is 320(RGB)*960, the panel can display up to 16.7M colors.
Product Positioning: This module features a 4.59-inch ultra-wide IPS (In-Plane Switching) panel with an aspect ratio of 3:1, offering wide viewing angles and high contrast ratio. With a typical luminance of 400 cd/m² and an SPI interface, it is well-suited for a wide range of applications such as industrial control panels, digital signage, smart home devices, and other embedded systems requiring a bright and high-quality medium-sized display.
2. Detailed Product Overview & Architecture
The module's architecture is designed for robust performance and easy integration. The primary components include:
- TFT-LCD Panel: 4.59-inch diagonal, a-Si TFT active matrix, transmissive, IPS mode. Resolution is 320(RGB) × 960 pixels with an active area of 36.768 (H) × 110.304 (V) mm.
- Driver IC: The module uses the ST7701P driver IC, communicating via a serial interface.
- Backlight Unit (B/L): A white LED backlight configured as 4 series, 2 parallel (4串2并). The typical driving condition is IF=80mA, Vf=12V (TYP). The typical luminance is 400 cd/m².
- Mechanical Construction: COG (Chip-on-Glass) + FPC + B/L. The module outline dimensions are 40.37 (H) × 117.9 (V) × 2.00 (D) mm.
- Interface: The module communicates via an FPC connector. The display interface supports SPI 3-Line Serial Interface and SPI 4-Line Serial Interface.
- Display Mode: Transmissive, IPS, Normally Black.
- Viewing Direction: IPS (All directions).
3. Exhaustive Technical Specifications
3.1 General & Mechanical Specifications
| Item | Specification |
| Display Size (Diagonal) | 4.59 inches |
| Resolution (Dots) | 320(RGB) × 960 |
| Display Technology | Active Matrix TFT, Transmissive, a-Si, IPS |
| Module Construction | COG+FPC+B/L |
| Color Depth | 16.7M Colors |
| Viewing Direction | IPS (All Views) |
| Input Data Interface | SPI 3-Line / SPI 4-Line |
| Driver IC | ST7701P |
| Module Size (H×V×D) | 40.37 × 117.9 × 2.00 mm |
| Active Area (H×V) | 36.768 × 110.304 mm |
| Pixel Arrangement | RGB Stripe |
| Display Mode | Transmissive, IPS, Normally Black |
| Backlight Configuration | 4 Series, 2 Parallel (4S2P) |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -30°C to +80°C |
3.2 Electrical Characteristics
3.2.1 Recommended Operating Conditions
Test conditions: VDD=2.5 to 3.3V, VDDI=1.65 to 3.3V, AGND=DGND=0V, Ta=25°C.
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage | VCC | 2.5 | 2.8 | 3.3 | V |
| I/O supply voltage | IOVCC | 1.65 | 1.8 | 3.3 | V |
| Input voltage (L level) | VIL | VSS | --- | 0.3*IOVCC | V |
| Input voltage (H level) | VIH | 0.7*IOVCC | --- | IOVCC | V |
3.2.2 Backlight LED Characteristics
The backlight driving condition is IF=80mA, Vf=12V (TYP). The backlight is configured as 4 series, 2 parallel (4S2P).
| Parameter | Symbol | Typ | Unit |
|---|---|---|---|
| Forward Voltage | Vf | 12 | V |
| Forward Current | If | 80 | mA |
3.3 Interface Pin Assignment (11-Pin FPC)
Connector: FPC. Interface: SPI (Serial Peripheral Interface).
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | LEDA | P | Power for LED backlight anode |
| 2 | LEDK | P | Power for LED backlight cathode |
| 3 | LEDK | P | Power for LED backlight cathode |
| 4 | GND | P | Ground |
| 5 | VCC | P | Power supply |
| 6 | RST | I | The external reset input. |
| 7 | NC | -- | No connection |
| 8 | NC | -- | No connection |
| 9 | SDA | I/O | Serial data input pin used for the SPI Interface. SDI: Serial data input pin |
| 10 | SCK | I | The SPI Interface (SCL): Serves as a write signal and writes data at the rising edge. Serial interface (SCL): Serial clock input. |
| 11 | CS | I | Chip select signal |
3.4 Timing Characteristics
3.4.1 Reset Timing
| Related Pins | Symbol | Parameter | MIN | MAX | Unit |
|---|---|---|---|---|---|
| RESX | TRW | Reset pulse duration | 10 | - | us |
| RESX | TRT | Reset cancel (during SLPIN mode) | - | 5 | ms |
| Reset cancel (during SLPOUT mode) | - | 120 | ms |
3.5 Electro-Optical Characteristics (Ta=25°C)
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|---|
| Response time | Tr + Tf | θx = θy =0 | -- | 30 | 35 | ms | Note 1 |
| Contrast Ratio | CR | θx = θy =0 | 1000 | 1200 | -- | -- | Note 2 |
| Transmittance | T% | θx = θy =0 | -- | 6.1 | -- | % | -- |
| Color Chromaticity (CIE1931) White | W x, W y | θx = θy =0 | -- | (0.312, 0.349) | -- | -- | -- |
| Viewing angle (All directions) | θT, θB, θL, θR | CR > 10 | -- | 85 | -- | Deg. | Note 3 |
| Luminance (IF = 80mA) | L | -- | -- | 400 | -- | cd/m² | Note 4 |
3.6 Design Notes from Documentation
- B/L Driver: The backlight driving condition is IF=80mA, Vf=12V (TYP) for a 4S2P configuration. An external boost converter with constant current drive is recommended.
- Mechanical: Tolerance of segments to edge of glass: ±0.2mm. The FPC includes "PI补强" (PI reinforcement) with a total thickness of 0.3mm.
- TP Note: TP edge should not contact metal conductors to avoid ESD or short circuit risks. Silver paste points and yellow insulating paper are used for ESD protection.
- 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 is expected.
4. Application Guidelines & Critical Notes
- Power Supply: The module requires a 2.8V (Typ.) power supply for VCC and 1.8V (Typ.) for IOVCC. Ensure the power supply ripple is minimized.
- Interface: This module supports SPI 3-Line or SPI 4-Line serial interface. The microcontroller must be configured for one of these protocols.
- Backlight Driver (External): An external constant current driver is required to supply a typical current of 80mA at a forward voltage of 12V. The backlight circuit is arranged in a 4-series, 2-parallel (4S2P) structure.
- Reset: A hardware reset pin (RST, Pin 6) is provided. A low pulse of at least 10µs is required for a valid reset.
- 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 LS046I02-R-V1 from Lesson Smart Display Technology is a 4.59-inch TFT-LCD module with an ultra-wide IPS panel. It is a bright, high-contrast solution suitable for a wide variety of embedded display applications requiring a unique aspect ratio and wide viewing angles.
For successful design-in, engineers should:
- Obtain and review the complete, official Product Specification (Revision 1.0) for the full mechanical drawing and the ST7701P 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 80mA at 12V.
- Configure the host MCU's serial interface to match the SPI 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 vibrant display solution for a wide array of applications requiring a panoramic or tall display format.
