概述
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.
主要功能
- 2.8” diagonal TN panel – 6 o’clock best viewing direction (human eye optimal)
- 240×320 resolution – sharp QVGA, 65K colors
- 模块尺寸 – 50.0 × 69.2 × 2.5 mm (W×H×T)
- 活动区域 – 43.2 × 57.6 mm
- Flexible interface – 8‑bit or 16‑bit MCU parallel (optional)
- 亮度 – 350 cd/m² typical – readable indoors
- 高对比度 – 390:1 typical
- 快速响应时间 – 16ms typical (Tr+Tf)
- Wide color gamut - 70% NTSC 典型值
- 宽工作温度 -20℃至+70
- 背光 – 4 white LEDs (parallel), 80mA total current
- 驱动集成电路 – ILI9341 (well‑supported, mature)
- Anti‑glare polarizer – reduces reflection
- 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
| 参数 | 价值 |
|---|
| 液晶显示屏尺寸 | 2.8 英寸 |
| 面板类型 | a-Si TFT active matrix, TN (Normally White) |
| 决议 | 240 (RGB) × 320 pixels |
| 显示模式 | Normally White / Transmissive |
| 颜色数量 | 65K (6‑bit per color) |
| 观看方向 | 6 o’clock (human eye best) |
| 对比度 | 390 : 1 (typical) |
| 亮度（亮度） | 350 cd/m² (typical), 315 cd/m² (min) |
| 模块尺寸（宽×高×长） | 50.0 × 69.2 × 2.5 mm |
| 有效面积（宽×高） | 43.2 × 57.6 mm |
| 像素间距 | 0.180 × 0.180 mm |
| 驱动集成电路 | ILI9341 |
| 界面 | MCU 8‑bit / 16‑bit parallel (selectable) |
| 背光 | 4 white LEDs (parallel connection) |
| 工作温度 | -20 ~ +70 °C |
| 存储温度 | -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 | - | 80 (at 39°C) | % |
DC Characteristics (Ta=25°C)
| 参数 | 符号 | 最小 | 类型 | 最大 | 单位 |
|---|
| 逻辑电源电压 | VCC/VCI | 2.5 | 2.8 | 3.3 | V |
| I/O power supply | IOVCC | 1.65 | 2.8 | 3.3 | V |
| 输入电流 | Idd | - | 6 | 10 | 毫安 |
| 输入高电压 | VIH | 0.7×IOVCC | - | IOVCC | V |
| 输入低电压 | VIL | VSS | - | 0.3×IOVCC | 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 | 2.9 | 3.2 | 3.4 | V | 如果=80 毫安 |
| LED current (total) | 如果 | - | 80 | - | 毫安 | Constant current |
Optical Characteristics (Ta=25°C, IBL=80mA)
| 项目 | 符号 | 条件 | 最小 | 类型 | 最大 | 单位 |
|---|
| 对比度 | CR | 正常角度 | - | 390 | - | - |
| Luminance (center) | Lv | 正常角度 | 315 | 350 | - | cd/m² |
| 亮度均匀性 | δ白色 | - | 80 | - | - | % |
| 响应时间 (Tr+Tf) | - | TC=25°C | - | 16 | - | 毫秒 |
| 视角 (3:00) | θL | CR≥10 | - | 70 | - | 退化 |
| 视角（9:00） | θR | CR≥10 | - | 70 | - | 退化 |
| 视角（6:00） | θU | CR≥10 | - | 70 | - | 退化 |
| 视角 (12:00) | θD | CR≥10 | - | 50 | - | 退化 |
| 白色 CIE (x) | Wx | 正常角度 | 0.250 | - | 0.360 | - |
| 白色 CIE (y) | 怀 | 正常角度 | 0.250 | - | 0.360 | - |
| NTSC 比率 | 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
| 针脚编号. | 符号 | 输入/输出 | 说明 |
|---|
| 1-4 | DB0-DB3 | 输入/输出 | Data bus (lower 4 bits) |
| 5 | 接地 | P | 系统接地 |
| 6 | VDD | P | Analog power supply (2.5–3.3V) |
| 7 | /CS | I | 芯片选择（低电平有效） |
| 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 | 背光阳极 |
| 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.
可靠性和质量保证
可靠性测试项目（通过标准）
- 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
失败判断： No display defects, no glass crack, current Idd < 2x initial value, contrast ratio ≥50% of initial, and full electrical/optical functionality.
质量保证（符合 GB2828 / MIL-STD-105E 同等标准）
- 检查级别：一般 II 级，单一抽样
- 主要缺陷 AQL：0.065
- 小缺陷 AQL：0.065
- Inspection conditions: distance 250mm, temperature 25±5°C, angle 45°
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 - 保修无效。.
Packing Method
模块放置在防静电托盘中，用泡沫保护堆叠，用纸板固定，并用纸箱密封。可根据要求提供详细的包装图纸。.
订购与支持
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
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