RF2D LED vs 3D LED: Key Differences Explained
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This article explores the differences between 2D and 3D LEDs, outlining their key characteristics and advantages. LEDs, initially limited to applications like fiber optic cable transmission, are now widely used in emergency lights, bulbs, smart cars, decorative lighting, and more.
Image showing the structural difference between 2D and 3D LEDs. Image courtesy of Aledia.
Aledia, a company specializing in LED technology, designs, develops, and manufactures both 3D LED and LED-based products. Let’s delve into a comparison of these two types of LEDs.
2D LED vs. 3D LED: A Detailed Comparison
The table below highlights the key differences between 2D and 3D LEDs across various factors:
| Feature | 2D LED | 3D LED |
|---|---|---|
| Structure | Planar LED | Microwire LED |
| Substrate Cost | Small, expensive substrate | Large, economical substrate |
| Growth Process | Slow MOCVD growth process | Fast MOCVD growth process |
| Capital Expenditure | High | Low |
| Material Consumption | Higher | Lower |
| Manufacturing Plant | LED-specific plants needed | Existing high volume silicon wafer fabs can be used |
| Light Emission Area | Almost equivalent to 2D visible area | About 3 times the 2D LED area |
| Light Output | Less light/mm2, more current density & efficiency droop | More light/mm2, less current density & less efficiency droop |
| Color Availability | Single color per wafer | Multiple colors on one wafer or even on one chip |
| Light Emission Dimensions | Two dimensions | Three dimensions |
Key Takeaways:
- Structure: 2D LEDs are planar, while 3D LEDs utilize a microwire structure.
- Cost: 3D LEDs generally offer lower manufacturing costs due to the use of larger, more economical substrates and faster manufacturing processes.
- Light Emission: 3D LEDs provide a larger light emission area, leading to improved light output and reduced efficiency droop.
- Color Versatility: 3D LEDs have the advantage of being able to produce multiple colors on a single wafer or chip.
