Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
High-efficiency light source conversion enables high-power LED lamps to improve light efficiency and reduce heat consumption. The same power consumption can have higher brightness; if the brightness is equal, it is equal to the heat loss. This is naturally beneficial for LED chips that are afraid of heat. However, since the energy that is actually converted into light energy to emit the illuminant is only about 30%, most of the energy remains in the form of heat on the LED chip.
However, the coefficient of thermal expansion of copper ( about 19) is much larger than the coefficient of thermal expansion of the sapphire substrate (about 5). Therefore, the use of copper as a chip thermal carrier in the harsh environment, there is a risk of chip chipping. The chip size is limited. Nowadays, diamond-copper composite sheets have been developed in China. The thermal conductivity is higher than that of pure copper; the thermal expansion coefficient is lower than that of copper. It is expected that after mass production, the price can be accepted by manufacturers that produce high-power LED chip integrated blocks. The latest experimental report, using a 100W integrated module comparison, with a pure copper module at a chip temperature of 75 degrees Celsius, the module temperature of the diamond-copper composite chip is only 65 degrees Celsius.
If you need to purchase lamps in bulk, please contact us.WOSEN is a professional manufacturer and supplier of Led Flood Light, Led Street Light, Led Solar Light, etc. For more information, please visit https://www.wosenled.com/ or contact admin@wosenled.com or WhatsApp +86-13425434349
On April 22, network activity named "FAST 2015 -! OPEN DAY" was launched by a brand LED high-power outdoor lighting manufacturer- Shenzhen Lead Optoelectronics Technology Co., Ltd.(Chinese name is...
Recently, the world's leading watch brand Hublot and brand ambassador, legendary track and field athlete Usain Bolt hand in hand into Kyoto, the ancient capital of Japan, with passion to ignite...
This article is reproduced, does not represent the world position of million table.
After two years of breakthrough in the laboratory's light efficiency of 200 lm/W, Cree has finally produced the series of LED chips with 200 lumens per watt at the end of 2012, and officially...
Email to this supplier
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.