概述
The JicTech RT028TC5I-S9 is a high‑brightness 2.8‑inch TFT LCD module designed for embedded applications that demand vivid color, wide viewing angles, and a simple serial interface. Built on an IPS panel (normally black), it offers 240×RGB×320 pixel resolution (QVGA), 262K colors, and 80° full viewing angles in all directions. The 4‑wire SPI interface minimizes pin count and simplifies connection to most microcontrollers. With 400 cd/m² typical brightness, 800:1 contrast ratio, and a durable 6.2mm overall thickness, this module is ideal for handheld devices, medical equipment, portable terminals, industrial control panels, and consumer electronics.
主要功能
- 2.8” diagonal IPS panel - 80° 视角（左/右/上/下）
- 240×320 resolution – sharp QVGA, 262K colors
- 模块尺寸 – 50.40 × 69.60 × 6.20 mm (W×H×T)
- 活动区域 – 43.20 × 57.60 mm
- 4‑wire SPI interface – low pin count, easy integration
- 高亮度 – 400 cd/m² typical (min 300 cd/m²) – excellent indoor readability
- 高对比度 - 典型值为 800:1
- 响应时间 - 30ms 典型值（Tr+Tf）
- Wide color gamut – 60% NTSC typical
- 宽工作温度 -20℃至+70
- 背光 – 4 white LEDs (parallel), 80mA total current
- 驱动集成电路 – ST7789V2-G4-A (well‑supported, mature)
- MTBF - 30,000 小时
- 符合 RoHS 标准
应用
- Portable medical devices (patient monitors, diagnostic tools)
- 工业人机界面和控制面板
- Handheld test & measurement equipment
- 智能家居网关和安全面板
- 汽车辅助显示器
- Consumer electronics (MP4 players, digital photo frames)
技术规格
一般规格
LCD Size2.8 inchPanel Typea-Si TFT active matrix, IPS (Normally Black)Resolution240 (RGB) × 320 pixelsDisplay ModeIPS / Normally Black / TransmissiveNumber of Colors262K (6‑bit per color)Viewing DirectionAll o’clock (80° typical, CR≥10)Contrast Ratio800 : 1 (typical)Luminance (Brightness)400 cd/m² (typical), 300 cd/m² (min)Module Size (W×H×T)50.40 × 69.60 × 6.20 mmActive Area (W×H)43.20 × 57.60 mmPixel Pitch0.18 × 0.18 mmDriver ICST7789V2-G4-AInterface4‑wire SPIBacklight4 white LEDs (parallel connection)Operating Temperature-20 ~ +70 °CStorage Temperature-30 ~ +80 °C
绝对最大额定值
| 参数 | 符号 | 最小 | 最大 | 单位 |
|---|
| 工作温度 | 返回顶部 | -20 | +70 | °C |
| 储存温度 | Tst | -30 | +80 | °C |
| 湿度 | RH | - | 90（60°C 时） | % |
DC Characteristics (Ta=25°C)
| 参数 | 符号 | 最小 | 类型 | 最大 | 单位 |
|---|
| 逻辑电源电压 | VDD | 2.8 | 3.3 | 3.6 | V |
| 输入电流 | Idd | - | 12 | - | 毫安 |
| 输入高电压 | VIH | 0.7×VDD | - | VDD | V |
| 输入低电压 | VIL | VSS | - | 0.3×VDD | V |
Backlight Characteristics (Ta=25°C, constant current)
| 参数 | 符号 | 最小 | 类型 | 最大 | 单位 | 条件 |
|---|
| 正向电压 | Vf | 2.8 | 2.9 | 3.0 | V | 如果=80 毫安 |
| Forward current | 如果 | - | 80 | 100 | 毫安 | Constant current |
Optical Characteristics (Ta=25°C, If=80mA)
| 项目 | 符号 | 条件 | 最小 | 类型 | 最大 | 单位 |
|---|
| 对比度 | CR | 正常角度 | - | 800 | - | - |
| Luminance (center) | Lv | 正常角度 | 300 | 400 | - | cd/m² |
| 亮度均匀性 | δ白色 | - | 80 | - | - | % |
| 响应时间 (Tr+Tf) | - | TC=25°C | - | 30 | 40 | 毫秒 |
| Viewing Angle (all directions) | θ | CR≥10 | - | 80 | - | 退化 |
| 白色 CIE (x,y) | Wx, Wy | 正常角度 | 0.24,0.25 | 0.29,0.30 | 0.34,0.35 | - |
| NTSC 比率 | S | - | - | 60% | - | % |
Interface Pin Connection (11‑pin FPC – 4‑wire SPI)
| 针脚编号. | 符号 | 输入/输出 | 说明 |
|---|
| 1 | 接地 | P | 系统接地 |
| 2 | CLOCK | I | SPI clock input |
| 3 | 接地 | P | 系统接地 |
| 4 | SDI | 输入/输出 | SPI data in/out |
| 5 | RS | I | Data/Command select (1=data, 0=command) |
| 6 | 重置 | I | 复位（低电平有效） |
| 7 | CS | I | 芯片选择（低电平有效） |
| 8 | 接地 | P | 系统接地 |
| 9 | VCC | P | Power supply (2.8~3.3V) |
| 10 | LEDA | P | 背光阳极 |
| 11 | LEDK | P | 背光阴极 |
Full 11‑pin pinout includes an additional GND on pin 8. Note that pin 10 in the document also lists GND again – refer to the datasheet for exact FPC layout.
可靠性和质量保证
可靠性测试项目（通过标准）
- 高温储存：80±2℃，48 小时
- 低温储存：-30±2℃，48 小时
- 高温运行：70±2℃, 48H
- 低温运行：-20±2℃，48 小时
- Thermal shock: -20℃ ↔ 70℃, 30min each, 10 cycles
- ESD test: Air ±6kV / Contact ±4kV, 330Ω/150pF, 5 points each
MTBF： 室温下（25±10℃，40±20% 相对湿度）30,000 小时。.
失败判断： 测试后，对比度≥初始值的 50%，无显示缺陷，电气/光学功能齐全。.
Quality Assurance (per MIL-STD-105E / GB2828)
- 检查级别：一般 II 级，单一抽样
- 主要缺陷 AQL：0.65
- 小缺陷 AQL：1.5
- Test conditions: 25±5℃, 45±20% RH, 40W fluorescent lamp, 30cm viewing distance, 0°~45°
Packing information: 10pcs per tray × 16 trays per box = 160pcs/carton. Window/LCD tilt angle ≤0.3°.
处理和储存注意事项
- 避免机械冲击或跌落 - 玻璃面板易碎。.
- 如果 LCD 液体泄漏，立即用肥皂和水清洗皮肤/衣服；切勿吞咽。.
- 使用接地工作站和防静电袋进行处理和储存。.
- 储存：0~35°C，40~601TPT3T 相对湿度，置于密封的聚乙烯袋中，避免阳光直射。.
- 手工焊接：320℃~350℃，每个焊盘最长 10 秒，避免反复加热。.
- 请勿拆卸或改装模块。.
Packing Method
Modules are placed in anti‑static trays (10pcs/tray), stacked (16 trays), fixed with foam and cardboard, and sealed in cartons (160pcs/carton). Detailed packing drawings available upon request.
订购与支持
The JicTech RT028TC5I-S9 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-RT028TC5I-S9
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