Products Description
The 0.42‑inch OLED display is one of the smallest self‑emissive screens available, yet it delivers exceptional clarity and contrast. Designed for products where every millimeter counts, this micro‑display provides crisp monochrome graphics without the need for a backlight.
Whether you're building a smart ring, a medical sensor, a tiny wearable, or a status indicator for industrial equipment, the 0.42" OLED fits where no other display can – while consuming almost no power.
Key Features
1. Full customization from size to function
2. Fast sample development and short lead time
3. Ultra-thin, flexible design available
4. Stable performance under high and low temperature
5. Compatible with various main control systems
6. Stable mass production capacity
Parameter Specification
| Screen diagonal | 0.42 inch |
| Display type | Passive Matrix OLED |
| Resolution | 72 × 40 pixels |
| Pixel pitch | 0.12 × 0.12 mm |
| Active area | ~8.64 × 4.80 mm |
| Module outline | ~12.0 × 11.0 × 1.2 mm |
| Driver IC | SSD1306 |
| Interface | I²C or SPI |
| Logic voltage | 3.3V – 5V |
| Supply current | < 5 µA |
| Contrast ratio | Infinite |
| Brightness | 100 – 120 cd/m² |
| Viewing angle | > 160° |
| Response time | < 10 µs |
| Operating temperature | -40°C to +80°C |
| Storage temperature | -40°C to +85°C |
| Lifetime | > 50,000 hours |
| Weight | ~0.8 g |
| RoHS / REACH | Compliant |
Manufacturing strengths
Smallest usable OLED – fits into products where even 0.96" is too large
Proven SSD1306 controller – thousands of libraries and examples available
No backlight, no bleeding – pure black background for professional look
Battery‑friendly – sleep current <5 µA extends battery life significantly
Wide temperature range – reliable from -40°C to +80°C
Our factory
Certifications and Awards
Our Service
Pre-sales
24-hour response to inquiries, free 2D/3D drawings, compatibility verification, sample application
In-sales
Real-time production updates, third-party inspection accepted, full export documents
After-sales
Fast replacement for DOA. Technical Support. Spare Parts Supply. Overseas Service
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