Overview
The JicTech RT028TR5T-M2 is a compact 2.8‑inch TFT LCD module designed for embedded applications that require a simple yet powerful MCU interface and good optical performance. Built on a TN panel (normally white) with EWV wide‑viewing polarizer, it offers 240×RGB×320 pixel resolution (QVGA), 65K colors, and a 6 o’clock optimal viewing direction. The 18‑bit MCU parallel interface (8080‑style) enables fast data transfer and easy connection to popular microcontrollers. With 300 cd/m² typical brightness, 500:1 contrast ratio, and a slim 3.5mm thickness, this module is ideal for handheld devices, medical equipment, portable terminals, industrial control panels, and consumer electronics.
Key Features
- 2.8” diagonal TN panel – 6 o’clock best viewing direction, EWV polarizer for wider angle
- 240×320 resolution – sharp QVGA, 65K colors
- Module size – 51.40 × 69.20 × 3.50 mm (W×H×T)
- Active area – 43.20 × 57.60 mm
- 18‑bit MCU parallel interface (8080) – fast, compatible with most MCUs
- Brightness – 300 cd/m² typical – excellent indoor readability
- High contrast ratio – 500:1 typical
- Wide color gamut – 55% NTSC typical
- Wide operating temperature – -20℃ to +70℃
- Backlight – 6 white LEDs, 80mA total current (typical)
- Driver IC – ILI9341V (well‑supported, mature)
- MTBF – 20,000 hours
- RoHS compliant
Applications
- Portable medical devices (patient monitors, diagnostic tools)
- Industrial HMIs & control panels
- Handheld test & measurement equipment
- Smart home gateways & security panels
- Automotive auxiliary displays
- Consumer electronics (MP4 players, digital photo frames)
Technical Specifications
General Specifications
| Parameter | Value |
|---|
| LCD Size | 2.8 inch |
| Panel Type | a-Si TFT active matrix, TN (Normally White) |
| Resolution | 240 (RGB) × 320 pixels |
| Display Mode | TN / Normally White / Transmissive |
| Number of Colors | 65K (6‑bit per color) |
| Viewing Direction | 6 o’clock (best view) |
| Contrast Ratio | 500 : 1 (typical) |
| Luminance (Brightness) | 300 cd/m² (typical), 350 cd/m² (min? Actually 300 typ from spec) |
| Module Size (W×H×T) | 51.40 × 69.20 × 3.50 mm |
| Active Area (W×H) | 43.20 × 57.60 mm |
| Pixel Pitch | 0.180 × 0.180 mm |
| Driver IC | ILI9341V |
| Interface | 18‑bit MCU parallel (8080) |
| Backlight | 6 white LEDs (parallel? Spec says 6LEDs White, connection mode not specified but typical parallel) |
| Operating Temperature | -20 ~ +70 °C |
| Storage Temperature | -30 ~ +80 °C |
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
|---|
| Operating temperature | Top | -20 | +70 | °C |
| Storage temperature | Tst | -30 | +80 | °C |
| Humidity | RH | – | 90 (at 60°C) | % |
DC Characteristics (Ta=25°C)
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|
| Logic supply voltage | VDD | 2.6 | 2.8 | 3.3 | V |
| Input current | Idd | – | 25 | 36 | mA |
| Input High Voltage | VIH | 0.7×VDD | – | VDD | V |
| Input Low Voltage | VIL | VSS | – | 0.3×VDD | V |
Backlight Characteristics (Ta=25°C, constant current)
| Parameter | Symbol | Min | Typ | Max | Unit | Condition |
|---|
| Forward voltage | Vf | 2.7 | 3.1 | 3.5 | V | If=80mA |
| LED current (total) | If | – | 80 | – | mA | 6 LEDs, constant current |
Optical Characteristics (Ta=25°C, If=40mA)
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|
| Contrast Ratio | CR | Normal angle | 400 | 500 | – | – |
| Luminance (center) | Lv | Normal angle | 300 | 350 | – | cd/m² |
| Luminance Uniformity | δ WHITE | – | 80 | – | – | % |
| Viewing Angle (3:00/9:00) | θ | CR≥10 | 35 | 45 | – | deg |
| Viewing Angle (6:00) | θ | CR≥10 | 40 | 50 | – | deg |
| Viewing Angle (12:00) | θ | CR≥10 | 10 | 20 | – | deg |
| White CIE (x) | Wx | Normal angle | 0.257 | 0.307 | 0.357 | – |
| White CIE (y) | Wy | Normal angle | 0.269 | 0.329 | 0.369 | – |
| NTSC Ratio | S | – | – | 55.3% | – | % |
Interface Pin Connection (40‑pin FPC – 18‑bit MCU, partial)
26GNDPSystem ground
| Pin No. | Symbol | I/O | Description |
|---|
| 1-4, etc. | YU, XL, TD, XR | I/O | Resistive touch panel signals (optional, not populated on base model) |
| 5 | GND | P | System ground |
| 6 | VDD3V | P | Logic power supply (2.8V typical) |
| 7 | GND | P | System ground |
| 8-25 | DB17-DB0 | I/O | 18‑bit data bus (18 lines) |
| 27 | RD | I | Read strobe (active low) |
| 28 | WRX(D/CX) | I | Write strobe (active low) / Data/Command select |
| 29 | RS | I | Register select (1=data, 0=command) |
| 30 | CS | I | Chip select (active low) |
| 31 | RESET | I | Reset (active low) |
| 32-33 | IM0, IM1 | I | Interface mode select (set for 18‑bit MCU) |
| 34 | IOVCC | P | I/O power supply (1.65~3.3V) |
| 35 | GND | P | System ground |
| 36 | LED_A | P | Backlight anode |
| 37-40 | LED_K1~K4 | P | Backlight cathodes (4 of 6 LEDs, others may be shared) |
Full 40‑pin pinout includes additional touch pins and grounds. Interface voltage levels depend on IOVCC. For 18‑bit mode, DB17-DB0 are used.
Reliability & Quality Assurance
Reliability Test Items (Pass Criteria)
- High temperature storage: 80±2℃, 48H
- Low temperature storage: -30±2℃, 48H
- High temperature operation: 70±2℃, 48H
- Low temperature operation: -20±2℃, 48H
- Thermal shock: -20℃ ↔ 70℃, 30min each, 10 cycles (implied)
MTBF: 20,000 hours @ room temperature (25±10℃, 40±20% RH).
Failure judgment: After test, contrast ratio ≥50% of initial value, no display defects, and full electrical/optical functionality.
Quality Assurance (per MIL-STD-105E / GB2828)
- Inspection level: General II, single sampling
- Major defect AQL: 0.65
- Minor defect AQL: 1.5
- Test conditions: 25±5℃, 45±20% RH, 40W fluorescent lamp, 30cm viewing distance, 0°~45°
Handling & Storage Precautions
- Avoid mechanical shock or dropping – glass panel is fragile.
- If LCD fluid leaks, wash skin/clothes immediately with soap and water; do not ingest.
- Use grounded workstations and anti‑static bags for handling and storage.
- Storage: 0~35°C, 40~60% RH, in sealed polyethylene bag, no direct sunlight.
- Hand soldering: 320℃~350℃, max 10 seconds per pad, avoid repeated heating.
- Do not disassemble or modify the module – warranty void.
Packing Method
Modules are placed in anti‑static trays, stacked with foam protection, fixed with cardboard, and sealed in cartons. Detailed packing drawings available upon request.
Ordering & Support
The JicTech RT028TR5T-M2 is available for engineering samples and mass production. For a complete datasheet, 2D drawing, or a quotation, please contact our B2B sales team.
Download product manual:
FULL-RT028TR5T-M2
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