Overview
The JicTech RT028TR5T-S2B is a versatile 2.8‑inch TFT LCD module designed for embedded applications that require a bright display, flexible interface options, and integrated touch input. Built on a TN panel (normally white), it offers 240×RGB×320 pixel resolution (QVGA), 65K colors, and a 6 o’clock optimal viewing direction. The dual SPI+18‑bit RGB interface allows easy configuration and fast video data transfer, fitting a wide range of MCUs and processors. An integrated 4‑wire resistive touch panel provides reliable input even with gloves. With 300 cd/m² brightness, 500:1 contrast ratio, and a compact 3.8mm overall 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
- 240×320 resolution – sharp QVGA, 65K colors
- Module size – 50.0 × 69.2 × 3.8 mm (W×H×T)
- Active area – 43.2 × 57.6 mm
- Flexible interface – SPI + 18‑bit RGB (parallel) – command via SPI, video via RGB
- Brightness – 300 cd/m² typical – readable indoors and shaded outdoor
- High contrast ratio – 500:1 typical
- Fast response time – 16ms typical (Tr+Tf)
- Integrated 4‑wire resistive touch – reliable, glove‑friendly, anti‑glare surface optional
- Wide operating temperature – -20℃ to +70℃
- Backlight – 6 white LEDs (parallel), 90mA total current
- 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 with touch interface
Technical Specifications
General Specifications
Viewing Direction6 o’clock
| 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) |
| Contrast Ratio | 500 : 1 (typical) |
| Luminance (Brightness) | 300 cd/m² (typical), 250 cd/m² (min) |
| Module Size (W×H×T) | 50.00 × 69.20 × 3.80 mm (±0.2) |
| Active Area (W×H) | 43.20 × 57.60 mm |
| Pixel Pitch | 0.180 × 0.180 mm |
| Driver IC | ILI9341V |
| Interface | SPI (control) + 18‑bit RGB (data) |
| Touch Panel | 4‑wire resistive touch (RTP) |
| Backlight | 6 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 | 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=90mA |
| LED current (total) | If | – | 90 | – | mA | Constant current |
Optical Characteristics (Ta=25°C)
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|
| Contrast Ratio | CR | Normal angle | 400 | 500 | – | – |
| Luminance (center) | Lv | Normal angle | 250 | 300 | – | cd/m² |
| Luminance Uniformity | δ WHITE | – | 80 | – | – | % |
| Response Time (Tr+Tf) | – | TC=25°C | – | 16 | – | ms |
| 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 | 0.257 | 0.307 | 0.357 | – |
| White CIE (y) | Wy | Normal angle | 0.269 | 0.329 | 0.369 | – |
| NTSC Ratio | S | – | – | 55.3% | – | % |
Interface Pin Connection (50‑pin FPC – SPI + RGB + RTP, partial)
| Pin No. | Symbol | I/O | Description |
|---|
| 1 | LED_K | P | Backlight cathode (common) |
| 2-5 | LED_A1~A4 | P | Backlight anodes (4 of 6, remaining 2 on other pins) |
| 6-9 | IM0-IM3 | I | Interface mode select (set for SPI+RGB) |
| 10 | RESET | I | Reset (active low) |
| 11 | VSYNC | I | Vertical sync |
| 12 | HSYNC | I | Horizontal sync |
| 13 | DOTCLK | I | Pixel clock (RGB) |
| 14 | DE | I | Data enable |
| 15-32 | DB17-DB0 | I/O | 18‑bit RGB data bus |
| 33 | SDO | O | SPI data out |
| 34 | SDI | I | SPI data in |
| 35 | RD | I | Read strobe (not used in RGB mode) |
| 36 | WRX(D/CX) | I | Write strobe / Data/Command select |
| 37 | D/CX(SCL) | I | Data/Command (or SPI clock) |
| 38 | CSX | I | Chip select (active low) |
| 39 | TE | O | Tearing effect output |
| 40-41 | IOVCC | P | I/O power supply (1.65~3.3V) |
| 42 | VCI | P | Analog power supply (2.5~3.3V) |
| 44-47 | XR, YU, XL, YD | I/O | 4‑wire resistive touch panel signals (right, up, left, down) |
Full 50‑pin pinout includes additional LED cathodes and grounds. Interface voltage levels depend on IOVCC and GND.
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°
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 RT028TR5T-S2B 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-RT028TR5T-S2B
📩 Request a quote or sample – email us today or use the inquiry form below.
