How Will The Current Density Is A Small LED Display Key to Success
- Details
- Category: Molybdenum & Sapphire Growth Furnace News
- Published on 28 March 2014
- Written by Cloudy
- Hits: 337
Lighting in the area , in order to obtain high brightness lighting products, manufacturers generally choose to use the terminal application " high current density chips ." However display applications into 
" Little pitch era " , the appropriate size of the LED current density opposite. This is mainly because the screen applications, the product is good or bad is not done more than anyone else 's screen , " bright" , but who do more screen "dark" , "dark" to dim under the environment will not cause irritation to eyes hurt . And this requirement is made for LED devices higher requirements, because when the current density to 0.3 to 0.4 amps, how to handle the relationship between semiconductor devices and leakage current conduction is a difficult problem.
With a small current chips become mainstream industry to solve the reverse leakage current display products will be the key to success . The repair small pitch of the display is extremely difficult , which gives the current control , anti-static capability chip reliability parameters put forward higher requirements . Device reliability and packaging technology and is closely related , so this level of packaging devices made more demanding. At present, China mainland market demand for small pitch QFN package about a month hundreds kk, the future is likely to exceed 1000kk, but mainland enterprises related to production capacity are almost zero. In the long run , QFN technology will gradually replace PLCC LED technology to become the main trend of the future package , so the packaging companies may wish to enter the field in a rational manner .
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