标签：led application

stage lighting usa in LED application

We use LED display alerts, occasionally encountered LED display black screen phenomenon, sometimes the screen is in use is normal, suddenly black, black sometimes appears in the sending program content, sometimes just turned on the electricity instantly black black state occurs, but in the process control system uses the same kind of phenomenon may be caused by a variety of reasons, even the LED display black also due to different operating or different environments. Encountered this phenomenon please do not worry, we can refer to the following aspects to determine the “fault” and the exclusion.

 

stage lighting usa in LED application
Make sure to have all the right power control system, including all hardware. Also, note that the positive and negative terminals of the power supply if there is reversed, then the wrong stage lighting usa. (+5 V is positive, GND is the negative.);
2 If you are using a wired control card, check and repeatedly confirmed the serial cable is used to connect the controller loose or peeling. (If the release of information on the way black is likely to be caused because of this reason, in the communication process is interrupted communication lines loose,

Hence the screen black. Do not think the display body did not move, it is impossible to loose line, hands-check, which is very important that you want to solve the problem quickly. );
If you are using Ling Guan GPRS wireless control card, on his way to publish information black, need to re-query whether the control card online, online re-released program information after the success of the screen to light (due to GPRS control card performed Ads

The stage lighting usa action is off-screen to open the screen action, if you publish unsuccessful, then it send instant off-screen, you can not start the opening screen action, which led LED display black screen);
4 If you are using Ling Guan wireless the GPRS control card, LED display found in the use sudden black screen is not lit, the operating software to query the clock, and then proofread the clock, LED display to light up work;
5 If you are using LED control card is the motherboard HUB board, please check and confirm whether the LED stage lighting usa display and connected to the main control card HUB distribution board tight junctions, is inserted backwards. Please check and confirm connecting Ling consistent control cable between the card and HUB distribution board Loose or inserted upside phenomenon.

super led bulbs in led application

In order to solve the LED Lights heat dissipation problems, the future may be largely vertical structure of the LED structure, promote the technical development of the LED industry. I believe we all are heard, the following only from the technical surface are described, for information on the vertical structure of LED (super led bulbs) technology.

super led bulbs in led application

We know that the LED chip (super led bulbs) has two basic structure of the horizontal structure (Lateral) and the vertical structure (Vertical). The horizontal structure of the LED chip, the two electrodes on the same side of the LED chip, the current limit in the n-and p-type layer in the lateral flow, ranging from distance. The two electrodes of the vertical structure of the LED chips on both sides of the LED epitaxial layer, respectively, due to graphical electrode and the p-type cladding layer as the second electrode, the current almost all vertical flow through the LED epitaxial layer, very little lateral flow current can improve the current distribution of the planar structure the problem, improve the luminous efficiency can also solve P shading to enhance the LED light-emitting area.

 

We start to understand under the vertical structure of the LED manufacturing technology and the basic methods:

Manufacturing vertical structure LED chip technology, there are three main ways:
The growth of GaN films, the use of silicon carbide substrate, the advantage is in the same operating current conditions, the light fades, long life, the shortcomings of the silicon substrate absorbance.
Second, the use of chip bonding and peeling technology manufacturing. The advantage is that the light fades, long life, the deficiencies to be the surface of the LED in order to improve the luminous efficiency.
Is heterogeneous substrates such as silicon substrate GaN LED (super led bulbs)  epitaxial layer, the advantage of good heat dissipation and easy processing.

There are two basic ways: Peel the growth substrate, and stripped the growth substrate to create vertical structure LED chip. Which the growth of GaAs growth substrate on the vertical structure of GaP based LED chips have two structures:
Do not peel the conductive GaAs growth substrate: the stacked conductive DBR reflection layer on the conductive GaAs growth substrate, the growth of GaP based LED epitaxial layer on the reflective layer of conductive DBR.
Stripped GaAs growth substrate: Cascading reflective layer on the GaP based LED epitaxial layer bonded to a conductive support substrate, stripping the GaAs substrate. Conductive support substrate, the substrate of gallium arsenide, gallium phosphide substrate, the silicon substrate, metal and alloy.

In addition, the vertical GaN-based LED Grow Lights grown on silicon, there are two structures:
Stripped silicon growth substrates: metal reflective layer stacked on a conductive silicon growth substrate or conductive DBR reflection layer, the growth of GaN-based LED epitaxial layer on the reflective layer in the metal reflective layer or conductive DBR.
Stripping the silicon growth substrate: cascading metal reflective layer on the GaN-based LED epitaxial layer on the metal reflective layer bonded conductive support substrate, stripping the silicon growth substrate.
A brief description of manufacturing a vertical GaN-based LED process: reflective layer stacked on the reflective layer on the GaN-based LED epitaxial layer bonding the conductive support substrate, stripping the sapphire growth substrate. Conductive support substrate including metal and alloy substrate, the silicon substrate.

The GaP-based LEDs, GaN-based LED and ZnO-based LED of this type of through-hole vertical structure of LED compared to traditional structures LED has a large advantage, in particular in:
1, the vertical structure LEDs of all colors: red LED, green LED, blue LED and ultraviolet light the LED can be made through-hole vertical structure LEDs have great application market.
2, all of the manufacturing process in the chip (wafer) level.
3, no need to play the gold wire with the outside world power is linked through-hole vertical structure LED chip package thickness decreased. Therefore, can be used in the manufacture of ultra-thin devices, such as backlight.