Overview
The JicTech RT028T5T-A1 is a compact 2.8‑inch TFT LCD module designed for cost‑sensitive embedded applications that require a bright display and simple microprocessor interface. Built on a TN panel (normally white) with anti‑glare polarizer, it offers 240×RGB×320 pixel resolution (QVGA), 65K colors, and a 6 o’clock optimal viewing direction. The flexible 8‑bit or 16‑bit MCU parallel interface enables easy connection to a wide range of microcontrollers. With 350 cd/m² brightness, 390:1 contrast ratio, and a slim 2.5mm 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 (human eye optimal)
- 240×320 resolution – sharp QVGA, 65K colors
- Module size – 50.0 × 69.2 × 2.5 mm (W×H×T)
- Active area – 43.2 × 57.6 mm
- Flexible interface – 8‑bit or 16‑bit MCU parallel (optional)
- Brightness – 350 cd/m² typical – readable indoors
- High contrast ratio – 390:1 typical
- Fast response time – 16ms typical (Tr+Tf)
- Wide color gamut – 70% NTSC typical
- Wide operating temperature – -20℃ to +70℃
- Backlight – 4 white LEDs (parallel), 80mA total current
- Driver IC – ILI9341 (well‑supported, mature)
- Anti‑glare polarizer – reduces reflection
- 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 | Normally White / Transmissive |
| Number of Colors | 65K (6‑bit per color) |
| Viewing Direction | 6 o’clock (human eye best) |
| Contrast Ratio | 390 : 1 (typical) |
| Luminance (Brightness) | 350 cd/m² (typical), 315 cd/m² (min) |
| Module Size (W×H×T) | 50.0 × 69.2 × 2.5 mm |
| Active Area (W×H) | 43.2 × 57.6 mm |
| Pixel Pitch | 0.180 × 0.180 mm |
| Driver IC | ILI9341 |
| Interface | MCU 8‑bit / 16‑bit parallel (selectable) |
| Backlight | 4 white LEDs (parallel connection) |
| 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 | – | 80 (at 39°C) | % |
DC Characteristics (Ta=25°C)
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|
| Logic supply voltage | VCC/VCI | 2.5 | 2.8 | 3.3 | V |
| I/O power supply | IOVCC | 1.65 | 2.8 | 3.3 | V |
| Input current | Idd | – | 6 | 10 | mA |
| Input High Voltage | VIH | 0.7×IOVCC | – | IOVCC | V |
| Input Low Voltage | VIL | VSS | – | 0.3×IOVCC | V |
Backlight Characteristics (Ta=25°C, constant current)
| Parameter | Symbol | Min | Typ | Max | Unit | Condition |
|---|
| Forward voltage | Vf | 2.9 | 3.2 | 3.4 | V | If=80mA |
| LED current (total) | If | – | 80 | – | mA | Constant current |
Optical Characteristics (Ta=25°C, IBL=80mA)
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|
| Contrast Ratio | CR | Normal angle | – | 390 | – | – |
| Luminance (center) | Lv | Normal angle | 315 | 350 | – | cd/m² |
| Luminance Uniformity | δ WHITE | – | 80 | – | – | % |
| Response Time (Tr+Tf) | – | TC=25°C | – | 16 | – | ms |
| Viewing Angle (3:00) | θL | CR≥10 | – | 70 | – | deg |
| Viewing Angle (9:00) | θR | CR≥10 | – | 70 | – | deg |
| Viewing Angle (6:00) | θU | CR≥10 | – | 70 | – | deg |
| Viewing Angle (12:00) | θD | CR≥10 | – | 50 | – | deg |
| White CIE (x) | Wx | Normal angle | 0.250 | – | 0.360 | – |
| White CIE (y) | Wy | Normal angle | 0.250 | – | 0.360 | – |
| NTSC Ratio | S | – | – | 70% | – | % |
Interface Pin Connection (parallel MCU)
11-12IM0, X+, Y-, X-, Y+I/PIM0 for interface mode select; X/Y for touch (not populated)
21DB4I/OData bus bit 4
| Pin No. | Symbol | I/O | Description |
|---|
| 1-4 | DB0-DB3 | I/O | Data bus (lower 4 bits) |
| 5 | GND | P | System ground |
| 6 | VDD | P | Analog power supply (2.5–3.3V) |
| 7 | /CS | I | Chip select (active low) |
| 8 | RS | I | Data/Command select (1=data, 0=command) |
| 9 | WR | I | Write strobe (rising edge latch) |
| 10 | RD | I | Read strobe (rising edge) |
| 16 | A | P | Backlight anode |
| 17-20 | K1-K4 | P | Backlight cathodes (4 LEDs parallel) |
| 22-30 | DB8-DB15, RESET | I/O/I | Upper data bus bits (8-15) and reset |
Full 30‑pin pinout including NC and additional power pins available in the datasheet. Interface mode (8-bit or 16-bit) is set by IM0 and hardware strapping.
Reliability & Quality Assurance
Reliability Test Items (Pass Criteria)
- High temperature storage: 80±2℃, 12H
- Low temperature storage: -30±2℃, 12H
- High temperature operation: 70±2℃, 24H
- Low temperature operation: -20±2℃, 24H
- Temperature cycle (non‑operation): -20℃ ↔ 70℃, 30min each, 5 cycles
- Damp proof test: 39℃ / 80% RH, 12H
- Mechanical vibration: 10Hz~55Hz~10Hz, 1.5mm, X/Y/Z, 0.5H (packed)
- Drop test: 1.0m height, one time each side (packed)
- ESD test: Air ±4kV / Contact ±2kV, 330Ω/150pF, 10 times each
Failure judgment: No display defects, no glass crack, current Idd < 2x initial value, contrast ratio ≥50% of initial, and full electrical/optical functionality.
Quality Assurance (per GB2828 / MIL-STD-105E equivalent)
- Inspection level: General II, single sampling
- Major defect AQL: 0.065
- Minor defect AQL: 0.065
- Inspection conditions: distance 250mm, temperature 25±5°C, angle 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 RT028T5T-A1 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 SPEC-RT028T5T-A1
📩 Request a quote or sample – email us today or use the inquiry form below.
