Overview
The JicTech RT028T5T-Q1B 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 polarizer, it offers 240×RGB×320 pixel resolution (QVGA), 262K colors, and a 6 o’clock optimal viewing direction. The 16‑bit MCU parallel interface (8080‑style) enables fast data transfer and easy connection to popular microcontrollers. With 250 cd/m² brightness, 500:1 contrast ratio, and a slim 2.3mm 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, 262K colors
- Module size – 50.0 × 69.2 × 2.3 mm (W×H×T)
- Active area – 43.2 × 57.6 mm
- MCU 16‑bit parallel interface (8080) – compatible with most microcontrollers
- Brightness – 250 cd/m² typical – readable indoors
- High contrast ratio – 500:1 typical
- Fast response time – 16ms typical (Tr+Tf)
- Wide color gamut – 55% NTSC typical
- Wide operating temperature – -20℃ to +70℃
- Backlight – 4 white LEDs (parallel), 80mA total current
- Driver IC – ILI9341V (well‑supported, mature)
- MTBF – 30,000 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 | 262K (6‑bit per color) |
| Viewing Direction | 6 o’clock |
| Contrast Ratio | 500 : 1 (typical) |
| Luminance (Brightness) | 250 cd/m² (typical), 200 cd/m² (min) |
| Module Size (W×H×T) | 50.0 × 69.2 × 2.30 mm |
| Active Area (W×H) | 43.2 × 57.6 mm |
| Pixel Pitch (W×H) | 0.06 × 0.18 mm |
| Driver IC | ILI9341V |
| Interface | MCU 16‑bit parallel (8080) |
| 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 | – | 90 (at 60°C) | % |
DC Characteristics (Ta=25°C)
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|
| Logic supply voltage | VDD | 3.0 | 3.3 | 3.6 | V |
| Input current | Idd | – | 13 | – | 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)
Forward voltageVf3.03.23.3VIf=80mA
| Parameter | Symbol | Min | Typ | Max | Unit | Condition |
|---|
| LED current (total) | If | – | 80 | – | mA | Constant current |
Optical Characteristics (Ta=25°C)
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|
| Contrast Ratio | CR | Normal angle | – | 500 | – | – |
| Luminance (center) | Lv | Normal angle | 200 | 250 | 300 | cd/m² |
| Luminance Uniformity | δ WHITE | – | 80 | – | – | % |
| Response Time (Tr+Tf) | – | TC=25°C | – | 16 | 24 | ms |
| Viewing Angle (3:00) | θL | CR≥10 | – | 45 | – | deg |
| Viewing Angle (9:00) | θR | CR≥10 | – | 45 | – | deg |
| Viewing Angle (6:00) | θU | CR≥10 | – | 50 | – | deg |
| White CIE (x) | Wx | Normal angle | – | 0.301 | – | – |
| White CIE (y) | Wy | Normal angle | – | 0.337 | – | – |
| NTSC Ratio | S | – | – | 55% | – | % |
Interface Pin Connection (MCU Parallel – 40‑pin FPC, partial)
| Pin No. | Symbol | I/O | Description |
|---|
| 1 | GND | P | System ground |
| 2 | RS | I | Data/Command select (1=data, 0=command) |
| 3 | WR | I | Write enable (8080 interface) |
| 4 | RD | I | Read enable (8080 interface) |
| 5 | CS | I | Chip select (active low) |
| 6-7 | VCC | P | Analog power supply (2.8~3.3V) |
| 8 | IOVCC | P | I/O power supply (1.8~3.3V) |
| 10 | GND | P | System ground |
| 11-26 | DB0-DB15 | I/O | 16‑bit data bus |
| 28 | RESET | I | Reset (active low) |
| 31 | LED-A | P | Backlight anode |
| 32-35 | LEDK1-K4 | P | Backlight cathodes (4 LEDs parallel) |
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
- ESD test: Air ±6kV / Contact ±4kV, 330Ω/150pF, 5 points each
MTBF: 30,000 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.
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-Q1B 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-Q1B
📩 Request a quote or sample – email us today or use the inquiry form below.
