LS043I09-R-V1: 4.3-Inch a-Si TFT LCD Module, 480×272 Resolution, 262K Colors, RGB Interface, 40-Pin, ST7282A Driver
Product Subtitle / Keywords
4.3 Inch Display, 480(RGB)×272 Resolution, Transmissive a-Si TFT-LCD, RGB Interface, COG+FPC+B/L, 262K Colors, 40-Pin, ST7282A Driver, 105.5×67.2×3.0 mm, 200 cd/m² Brightness, 3000:1 Contrast Ratio, Free (IPS) Viewing Direction, -20°C~70°C Operating Temperature
1. Executive Summary & Product Positioning
The LS043I09-R-V1, developed by Lixin (Wan'an) Intelligent Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 4.3-inch transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module.
This product specification (Revision 1.0, Module Type: COG+FPC+B/L) serves as the definitive technical document, defining its structural composition (COG+FPC+B/L), physical features, mechanical dimensions, absolute maximum ratings, detailed electrical characteristics, complete RGB interface pinout and timing, and comprehensive electro-optical performance. It delivers a resolution of 480(RGB)×272 with 262K-color display capability, driven by the ST7282A controller.
The document provides the core parameters necessary for system integration into embedded display applications requiring a standard wide-format display. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview & Architecture
- Core Technology: Transmissive type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display) module, which is composed of a TFT-LCD panel, a driver circuit and a backlight unit.
- Display Mode: Active matrix TFT, Transmissive type.
- Display Format: Graphic 480(RGB)×272 Dot-matrix.
- Display Characteristics: Capable of displaying up to 262 thousand colors.
- Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit).
- Input Data: RGB.
- Viewing Direction (Grayscale Inversion): Free (IPS).
- Drive IC: ST7282A.
- Connector Pin Count: 40-Pin.
- Approval Status: ☑ Approved Product Specification only (as per signature block).
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Module size (H×V×D) | 105.5 × 67.2 × 3.0 mm |
| Number of dots / Resolution | 480(RGB) × 272 pixel |
| Active area (H×V) | 95.04 × 53.856 mm |
| Panel Size (Diagonal) | 4.3 inch |
Critical Mechanical Design Notes (from outline dimension drawing):
- Display Type: 4.3" TFT LCD.
- Resolution: 480(RGB) × 272.
- Viewing Direction: ALL O'CLOCK (Free).
- Driver IC: ST7282A.
- Operating Temperature: -20°C ~ 70°C.
- Storage Temperature: -30°C ~ 80°C.
- Backlight: White LED 7 Chips Series.
- General Tolerance: ±0.2 mm (unless otherwise specified).
- Angular Tolerance: ∠ ±1°.
- FPC Total Thickness: PI补强+FPC总厚=0.3±0.03mm.
- Backlight Circuit: IF=20mA, Vf=21V.
- Silver Paste Points: Present on the module.
- Yellow Insulation Paper: Included for handling during assembly.
- Release Tape/Sticker: Included (易撕贴).
3.2 Electrical & Interface Specifications
3.2.1 Absolute Maximum Ratings
| Item | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 3.3 | V | Note1 Note2 |
| Supply voltage | IOVCC | -0.3 | 3.3 | V | Note1 Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1 Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1 Note2 |
3.2.2 Electrical Characteristics (DC – Recommended Operating Conditions)
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply voltage | VCC | — | 3.3 | — | V |
| Supply voltage | IOVCC | — | 3.3 | — | V |
| LED Forward Voltage | VF | — | 21 | — | V |
| LED Forward Current | IR | — | 20 | — | mA |
| LCD Luminance | BP | — | 200 | — | cd/m² |
3.2.3 Pin Description (40-pin FPC)
| Pin NO. | Symbol | Description |
|---|---|---|
| 1 | LEDK | LED BACKLIGHT (CATHODE) |
| 2 | LEDA | LED BACKLIGHT (ANODE) |
| 3 | GND | GROUND |
| 4 | VCC | POWER SUPPLY |
| 5 | R0 | RED DATA |
| 6 | R1 | RED DATA |
| 7 | R2 | RED DATA |
| 8 | R3 | RED DATA |
| 9 | R4 | RED DATA |
| 10 | R5 | RED DATA |
| 11 | R6 | RED DATA |
| 12 | R7 | RED DATA |
| 13 | G0 | GREEN DATA |
| 14 | G1 | GREEN DATA |
| 15 | G2 | GREEN DATA |
| 16 | G3 | GREEN DATA |
| 17 | G4 | GREEN DATA |
| 18 | G5 | GREEN DATA |
| 19 | G6 | GREEN DATA |
| 20 | G7 | GREEN DATA |
| 21 | B0 | BLUE DATA |
| 22 | B1 | BLUE DATA |
| 23 | B2 | BLUE DATA |
| 24 | B3 | BLUE DATA |
| 25 | B4 | BLUE DATA |
| 26 | B5 | BLUE DATA |
| 27 | B6 | BLUE DATA |
| 28 | B7 | BLUE DATA |
| 29 | GND | GROUND |
| 30 | CLK | CLOCK SIGNAL |
| 31 | DISP (NC) | DISPLAY ON/OFF (NC) 内部已接高, 开启显示模式 |
| 32 | HSYNC | HORIZONTAL SYNC INPUT IN RGB MODE |
| 33 | VSYNC | VERTICAL SYNC INPUT IN RGB MODE |
| 34 | DEN | DATA ENABLE |
| 35 | NC | NC |
| 36 | GND | GROUND |
| 37 | XR (NC) | TOUCH PLANE PIN/NC |
| 38 | YD (NC) | TOUCH PLANE PIN/NC |
| 39 | XL (NC) | TOUCH PLANE PIN/NC |
| 40 | YU (NC) | TOUCH PLANE PIN/NC |
Interface Summary:
- RGB Interface: Uses CLK (Pixel Clock), HSYNC (Horizontal Sync), VSYNC (Vertical Sync), DEN (Data Enable), and R0-R7, G0-G7, B0-B7 (24-bit data bus) for high-speed parallel data transmission.
- Backlight: Dedicated LEDA (Anode, Pin 2) and LEDK (Cathode, Pin 1) pins.
- Power: VCC (Pin 4) for main logic (3.3V), GND (Pins 3, 29, 36) for ground.
- Control: DISP (Pin 31) is internally pulled high for display on (NC).
- Touch Pins: Pins 37-40 are reserved for touch plane (XR, YD, XL, YU) but are NC in this module.
- Unused Pins: Pin 35 is NC — leave floating.
3.2.4 RGB Interface Timing Characteristics
| Item | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| DCLK Frequency | Fclk | 8 | 9 | 12 | MHz |
| DCLK Period | Tclk | 125 | 111 | 83 | ns |
| HSYNC Period Time | Th | 487 | 531 | 598 | DCLK |
| HSYNC Display Period | Thdisp | - | 480 | - | DCLK |
| HSYNC Back Porch | Thbp | 3 | 43 | 43 | DCLK |
| HSYNC Front Porch | Thfp | 4 | 8 | 75 | DCLK |
| HSYNC Pulse Width | Thw | 2 | 4 | 75 | DCLK |
| VSYNC Period Time | Tv | 276 | 292 | 321 | H |
| VSYNC Display Period | Tvdisp | - | 272 | - | H |
| VSYNC Back Porch | Tvbp | 2 | 12 | 12 | H |
| VSYNC Front Porch | Tvfp | 2 | 8 | 37 | H |
| VSYNC Pulse Width | Tvw | 2 | 4 | 37 | H |
3.3 Optical & Electro-Optical Characteristics
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Contrast Ratio | CR | θx=0°, θy=0° | 2000 | 3000 | — | — |
| Viewing Angle (Horizontal) | θx+ | CR≥10 | — | 80 | — | Deg. |
| Viewing Angle (Horizontal) | θx- | CR≥10 | — | 80 | — | Deg. |
| Viewing Angle (Vertical) | θy+ | CR≥10 | — | 80 | — | Deg. |
| Viewing Angle (Vertical) | θy- | CR≥10 | — | 80 | — | Deg. |
3.4 Reliability Test Conditions
| No. | Test Item | Test Conditions |
|---|---|---|
| 1 | High Temperature Storage | 80°C, 120Hr |
| 1 | High Temperature Operation | 70°C, 120Hr |
| 2 | Low Temperature Storage | -30°C, 120Hr |
| 2 | Low Temperature Operation | -20°C, 120Hr |
| 3 | High Temperature and High Humidity | 70°C, 90%RH, 120Hr |
| 4 | Temperature Cycle (Storage) | -10°C(1Hr)→25°C(5min)→60°C(1Hr) 32 Cycles |
| 4 | Temperature Cycle (Operation) | -20°C(1Hr)→25°C(5min)→60°C(1Hr) 25 Cycles |
| 5 | Peeling Off (Storage) | ≥500gf/cm |
| 6 | FPC Bending Test | ≥6,000 times, 2/sec |
| 7 | Vibration Test (Storage) | 50HZ, 30min, Amplitude: 2 cm, X/Y/Z directions |
| 8 | Drop Test | 60cm/ 3Corner/ 8Face, 1Cycle |
| 9 | ESD test | ±4KV, Human Body Mode, 150pF/330Ω; ±8KV, Air Mode, 150pF/330Ω; |
3.5 Version Record
| Version | Revise Date | Page | Content |
|---|---|---|---|
| 00 | — | ALL | New released |
4. Application Guidelines & Critical Notes
Intended Use
- Industrial control panels and human-machine interfaces (HMIs)
- IoT display nodes and smart home controls
- Handheld instruments and consumer electronics
- Any application requiring a compact, wide-format display with excellent image quality
Critical Design Considerations
- Interface (RGB): This module uses a parallel RGB interface for high-speed data transmission. The host MCU must have an RGB LCD controller with at least 24+ GPIOs (CLK, HSYNC, VSYNC, DEN, 24 data lines) to drive the display.
- Power Supply: Provide stable VCC (3.3V) for the main logic (connected to Pin 4). The backlight requires a constant-current LED driver connected to LEDA (Anode, Pin 2) and LEDK (Cathode, Pin 1), set to 20 mA at approximately 21V (Typ).
- Mechanical Integration: Module outline: 105.5mm (H) × 67.2mm (V) × 3.0mm (D). Active area: 95.04mm × 53.856mm. FPC: 40-pin FPC with PI reinforcement.
- Viewing Angle Characteristics: This module provides Free (IPS) viewing direction with 80° in all directions (Typ).
- Optical Performance: Luminance: 200 cd/m² (Typ). Contrast Ratio: 3000:1 (Typ) – excellent contrast performance. Color Chromaticity (CIE 1931): Detailed specifications for Red, Green, Blue, and White are provided in the optical characteristics table.
- Temperature Limits: Operating Temperature: -20°C to +70°C. Storage Temperature: -30°C to +80°C.
Handling & Compliance
- The module is RoHS compliant.
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass and a 40-pin FPC – handle with care.
- Avoid bending the FPC sharply, especially near the connector interface.
- The module has a total thickness of 3.0mm – be careful when handling to avoid flexing.
- The module includes a yellow insulation paper and release tape/sticker for handling during assembly.
5. Conclusion & Design-In Support
The LS043I09-R-V1 specification details a high-performance 4.3-inch display module with an RGB interface and ST7282A driver — an excellent choice for applications requiring a larger display area with excellent image quality and wide viewing angles.
Key Strengths
- Excellent Contrast Ratio: 3000:1 (Typ) provides outstanding image quality.
- Wide Viewing Angles: 80° in all directions (IPS) ensures consistent image quality from any perspective.
- High-Speed RGB Interface: The 24-bit parallel RGB interface provides high bandwidth for smooth video and animation playback.
- Standard 4.3-inch Size: Suitable for a wide range of industrial and embedded applications.
- Wide Operating Temperature Range: -20°C to +70°C for operation and -30°C to +80°C for storage.
- Comprehensive Reliability Testing: The module has been tested for high/low temperature storage and operation, temperature cycling, FPC bending, vibration, drop, and ESD.
Main Design Focus
- The critical design task is properly implementing the RGB interface timing to ensure reliable high-speed data transfer.
- Supporting requirements: Provide stable VCC (3.3V) power. Provide a constant-current backlight driver set to 20 mA at 21V (Typ). Mechanical integration — the module outline is 105.5mm × 67.2mm × 3.0mm. FPC connector — verify the 40-pin FPC.
This module is an excellent choice for industrial control panels, smart home devices, and any embedded application requiring a larger, high-contrast display with excellent image quality and wide viewing angles.
