There are significant differences between COB LED (Chip On Board LED) and conventional LED (Regular LED) in many aspects. Here is a detailed comparison of these two LEDs:
1. Structure and design:
*COB LED: It packages multiple LED chips on the same substrate to form a semiconductor light source. This packaging method makes the COB LED light source structure more compact and integrated.
* Conventional LED: Usually composed of a PN junction, each LED chip is independent. Therefore, its light source is relatively dispersed.
2. Light effect and brightness:
* COB LED: Because multiple LED chips are packaged on the same substrate, its light efficiency is higher and the light color is more uniform. Under the same power, COB LEDs are brighter and have about 30% higher luminous efficiency than conventional LEDs.
* Conventional LED: Its brightness and light efficiency are relatively low because each LED chip emits light independently.
3. Energy saving and environmental protection:
* COB LED: Due to its high light efficiency, it can achieve high energy-saving effects. At the same time, COB LED does not need to use harmful substances such as mercury during the production process, so it is more environmentally friendly during use.
* Conventional LED: Although it also has certain energy-saving and environmental protection performance, its effect is slightly inferior to COB LED.
4. Heat dissipation performance:
* COB LED: COB packaging technology is used to tightly fit the LED chip to the substrate, allowing heat to be quickly transferred to the substrate and dissipated, effectively reducing thermal resistance and improving heat dissipation efficiency.
* Conventional LED: Its heat dissipation performance is relatively poor because each LED chip is independently packaged and the heat is difficult to dissipate quickly.
5. Application areas:
* COB LED: Due to its high brightness, high efficiency, long life and other advantages, it is widely used in various lighting and display fields, such as commercial lighting, outdoor lighting, display screens, etc.
* Conventional LED: It is also widely used in various lighting and display fields, but its application range and performance are relatively limited.
6. Price:
* COB LED: Due to higher production process requirements and better lighting effects and energy efficiency, its price is relatively high.
* Conventional LED: The price is relatively low and more suitable for some cost-sensitive application scenarios.
To sum up, there are significant differences between COB LED and conventional LED in terms of structure, light efficiency, brightness, energy saving and environmental protection, heat dissipation performance, application fields and price. Which LED to choose depends on the specific application scenario and needs.