Overview
The JicTech RT028T5T-L15B is a high‑brightness 2.8‑inch TFT LCD module designed for cost‑sensitive embedded applications that require a simple interface and excellent readability. Built on a TN panel (normally white) with EWV wide‑viewing polarizer, it offers 240×320 pixel resolution (QVGA), 65K colors, and a 12 o’clock optimal viewing direction. The SPI interface (3‑wire plus control) minimizes GPIO usage and simplifies connection to most microcontrollers. With 500 cd/m² typical brightness, 500:1 contrast ratio, and a slim 2.35mm thickness, this module is ideal for handheld devices, medical monitors, portable terminals, industrial control panels, and consumer electronics.
Key Features
- 2.8” diagonal TN panel – 12 o’clock best viewing direction, EWV polarizer for wider angle
- 240×320 resolution – sharp QVGA, 65K colors
- Module size – 50.0 × 69.2 × 2.35 mm (W×H×T)
- Active area – 43.2 × 57.6 mm
- SPI interface (3‑wire + control) – low pin count, easy MCU integration
- Ultra‑high brightness – 500 cd/m² typical – excellent for indoor and shaded outdoor use
- High contrast ratio – 500:1 typical
- Wide operating temperature – -20℃ to +70℃
- Backlight – 4 white LEDs (series), 80mA total current
- Driver IC – ILI9341 (well‑supported, mature)
- 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 | 12 o’clock |
| Contrast Ratio | 500 : 1 (typical) |
| Luminance (Brightness) | 500 cd/m² (typical) |
| Module Size (W×H×T) | 50.00 × 69.20 × 2.35 mm (±0.2) |
| Active Area (W×H) | 43.20 × 57.60 mm |
| Pixel Pitch | 0.180 × 0.180 mm |
| Driver IC | ILI9341V |
| Interface | SPI (3‑wire + control pins) |
| Backlight | 4 white LEDs (series 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 | 2.8 | 3.3 | 3.6 | 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 | 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 | 230 | 250 | – | cd/m² |
| Luminance Uniformity | δ WHITE | – | 80 | – | – | % |
| Viewing Angle (3:00) | θL | CR≥10 | 35 | 45 | – | deg |
| Viewing Angle (9:00) | θR | CR≥10 | 35 | 45 | – | deg |
| Viewing Angle (6:00) | θU | CR≥10 | 40 | 50 | – | deg |
| Viewing Angle (12:00) | θD | CR≥10 | 10 | 20 | – | deg |
| White CIE (x) | Wx | Normal angle | – | 0.307 | – | – |
| White CIE (y) | Wy | Normal angle | – | 0.329 | – | – |
| NTSC Ratio | S | – | – | 55.3% | – | % |
Note: Luminance in optical table (250 cd/m² typical) is measured at lower backlight current (40mA). At rated 80mA current, luminance achieves 500 cd/m² as stated in General Specification.
Interface Pin Connection (15‑pin FPC – SPI)
| Pin No. | Symbol | I/O | Description |
|---|
| 1 | GND | P | System ground |
| 2 | LED_A | P | Backlight anode |
| 3-6 | LED_K1~K4 | P | Backlight cathodes (4 LEDs in series) |
| 7 | SDO | O | Serial data output (SPI) |
| 8 | SDI | I/O | Serial data input |
| 9 | SCL | I | SPI clock |
| 10 | CS | I | Chip select (active low) |
| 11 | RS | I | Data/Command select (1=data, 0=command) |
| 12 | IOVCC | P | I/O power supply (1.8~3.3V) |
| 13 | VCI | P | Analog power supply (2.8~3.3V) |
| 14 | RESET | I | Reset (active low) |
| 15 | NC | – | No connect |
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: 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° left/right/up/down
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-L15B 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-L15B
📩 Request a quote or sample – email us today or use the inquiry form below.
