1.1-Inch SPI Display Module 135x240 TFT LCD ST7789H2 Driver IC
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DetermineSpecification of the 1.1-Inch SPI Display Module

Parameter of 1.1-Inch SPI Display Module
| ITEM | PARAMETER DESCRIPTION | UNIT |
| TFT series | TFT-H011A1QCIST3N10 | |
| Diagonal size | 1.1” | Inch |
| Resolution | 135x240 | Dot |
| Dimensions | 17.6x31.0x1.65 | mm |
| Active area (AA) | 14.86x24.91 | mm |
| LCD type | 1.1” TFT Module | mm |
| Display viewing angle | Full View | |
| Aspect ratio | 1:2 | |
| Backlight type | LED white | |
| TFT driver IC | ST7789H2 | |
| Brightness | 350cd/m2 | cd/m2 |
| Operating temperature | -30~80℃ | ℃ |
| Storage temperature | -30~80℃ | ℃ |
How does this SPI Display Module perform in harsh environments?
Temperature Extremes
| Parameter | Rating | Test Standard |
| Operating Temperature | -20℃ ~ +70℃ | IEC 60068-2-1, 2-2 |
| Storage Temperature | -30℃ ~ +80℃ | IEC 60068-2-14 |
| Temperature Cycling | -20℃ (30min) ↔ 70℃ (30min), 100 cycles | No electrical or optical drift |
Performance Details for this SPI Display Module:
- Luminance Stability: At -20℃, backlight output of this SPI Display Module drops by ~12% (350 → 308 cd/m²); at +70℃, it drops by ~8% (350 → 322 cd/m²). This behavior is within typical LED limits and does not impair readability.
- Response Time: LCD viscosity increases at low temperatures. For this SPI Display Module, Tr rises from 10ms to 28ms, and Tf from 15ms to 35ms at -20℃. The SPI Display Module still supports 30Hz refresh without visible ghosting. For -30℃ applications, a wide-temperature liquid crystal option is available for this SPI Display Module (custom MOQ).
- Color Shift: ΔE < 4 (CIE 1931) across the full temperature range for this SPI Display Module, with minimal blue-band drift correctable via software white balance.
Humidity and Moisture Resistance
| Parameter | Rating | Test Standard |
| Operating Humidity | 10% ~ 90% RH (non-condensing) | IEC 60068-2-78 |
| Storage Humidity | 10% ~ 95% RH @40℃ (non-condensing) | IEC 60068-2-30 |
| Conformal Coating | Acrylic on TFT glass & FPC gold fingers | Internal |
Performance Details for this SPI Display Module:
-
High Humidity Test (85% RH / 40℃ / 168h) on this SPI Display Module:
- No luminance degradation >3%
- No electrochemical migration (leakage current <1μA)
-
Salt Spray Test (optional, 5% NaCl / 35℃ / 48h) for this SPI Display Module:
- No pin corrosion or contact resistance increase >10%
This SPI Display Module maintains signal integrity and optical clarity even after prolonged exposure to high-humidity environments.
3. Mechanical Reliability – Vibration, Shock, and Drop
| Test | Condition | Result for this SPI Display Module |
| Vibration (swept sine) | 10Hz–500Hz, 1.5mm amplitude, 2h/axis (XYZ) | No contact loss, no flicker, no pixel defects |
| Mechanical Shock | Half-sine 100g / 6ms, 3 shocks/direction, 6 axes | No structural cracks, no display abnormality |
| Drop (with housing) | 1.2m onto concrete surface | No FPC fracture, no connector damage |
| FPC bending endurance | R5 radius, >5000 cycles | No electrical open, peel strength ≥0.8kN/m |
Structural Enhancements in this SPI Display Module:
- A PI Stiffener (0.3mm thick) on the FPC connector area increases mechanical strength by 30%.
- The FPC thickness of this SPI Display Module is 0.12mm with 1oz copper, ensuring signal integrity under repeated flexing.
This SPI Display Module has been validated to withstand the mechanical stresses commonly found in portable instruments, automotive cabins, and industrial control panels.
4. Long-Term Reliability Data
| Test | Condition | Result for this SPI Display Module |
| High Temperature Humidity Bias (THB) | 60℃ / 90% RH, 1000h | Failure rate <0.1% |
| High Temperature Storage (HTS) | 80℃, 1000h | Fully recoverable |
| Low Temperature Operation (LTL) | -20℃, 240h | No LC crystallization, no driver IC failure |
| Solderability | 245℃ lead-free reflow, 3x | Wetting area ≥95% |
These results confirm that this SPI Display Module delivers long-term reliability even when deployed in continuously harsh operating environments.
5. Special Considerations for Harsh Environments
- Condensation Prevention: The acrylic conformal coating and sealed FPC design of this SPI Display Module minimize the risk of short circuits during rapid temperature changes (e.g., -20℃ to 25℃).
- Vibration Isolation Recommendation: When installing this SPI Display Module in high-vibration equipment (e.g., vehicle dashboards, industrial robotics), we recommend using silicone gaskets or rubber dampers to further protect the FPC connector.
- Custom Upgrades: For extreme environments (e.g., -40℃ or 100% RH condensing), contact our FAE team to discuss customized versions of this SPI Display Module featuring wide-temperature LC, enhanced conformal coating, or rigid-flex PCB alternatives.
















