Technical Articles
Technical Articles of LED Industry & products.
  • Posted: 08/06/2015 09:08:25  Clicks: 982
    This technical article introduces six factors to consider when designing LED fluorescent lamp power supply. 1. Why the LED fluorescent lamp power supply should be constant current? LED semiconductor features determine that it will be greatly influenced by the environment, such as temperature and the current will...
  • Posted: 08/14/2015 04:08:31  Clicks: 881
    This technical article answers seven questions to help people easily understand LED. 1. What is the manufacturing process of LED chip? LED chip manufacturing is mainly to make effective and reliable low ohmic contact electrode and meet the minimum pressure drop and pressure pad, at the same time produce the ligh...
  • Posted: 08/18/2015 11:08:50  Clicks: 990
    Recently, media reports about flip chip and extension without packages ELC, CSP, POD technology, which has the possibility to change traditional ones. Actually, flip chip technology has a long history in the semiconductor industry. Philips Lumileds was introduced for the first time in 2006 LED field, and then followe...
  • Posted: 09/01/2015 05:09:53  Clicks: 833
    This technical article analyzes twelve questions of high power LED during its application. 1. Chromatic aberration Individual LED basically has no chromatic aberration problem, however, if there are a lot of LEDs being put into use, or a lamp with multiple LEDs at the same time, the problem will appear. Although...
  • Posted: 09/11/2015 04:09:58  Clicks: 833
    Conventional LED is generally scaffolding, which uses epoxy resin encapsulation, but its power and total luminous flux is small, and high bright one can only be used as some special lighting. With the development of the LED chip technology and packaging technology, the demand for high flux LED products comply with th...
  • Posted: 09/24/2015 02:09:12  Clicks: 782
    This technical article introduces five dimmer control technology of DC power LED. 1. Forward current adjustment method The simplest method of adjusting LED current is to change the current resistance which is connected with LED load. Almost all the DC-DC constant current chips have a test current of interface, c...
  • Posted: 10/09/2015 04:10:49  Clicks: 880
    This technical article introduces the measures to distinguish the quality of LED board. Materials:  1. Panel of LED board: To compete with low price, some LED unit board manufacturer uses cheap flame retardant paper board or single fiber board as the LED PCB circuit board. This is because all-fiberglass PCB...
  • Posted: 10/21/2015 02:10:55  Clicks: 689
    LED packaging technology is mostly developed based on discrete device packaging technology, but there is a lot of particularity. Under normal circumstances, the discrete device of the tube core is sealed in the packaging, whose main role is to protect the tube core and electrical interconnection. And LED encapsulatio...
  • Posted: 12/01/2015 02:12:47  Clicks: 763
    Today, white light LED still has the disadvantages of poor uniformity of luminance and short service life of sealing materials, which makes it fail to perform its received advantages. As for requirements level, with its application in mobile phone, car, medical and other fields, white light LED research results have ...
  • Posted: 12/08/2015 03:12:23  Clicks: 997
    The use of LED under four different wavelengths: 1. UV LED(UV LED)  (1) Low UV: 250 nm - 265 nm - 285 nm - 365 nm, now 250 nm to 410 nm. These are the INGaN/GaN carbide materials. The ultraviolet can kill all bacteria in water, and the lethality could reach 98%, especially the 285 nm.    (2) Medi...
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