Performance decrease is caused by growing defects in the epitaxy layers or on their boundaries, resulting in an increase of not radiating recombination and a decrease of optical efficiency. In turn, this means a limitation in lifetime. Due to the very different assembly technologies and types of constructions, as well as varying applications, an extended range of failure mechanisms can be observed.ĭuring normal operation optical performance of LEDs gradually decreases during lifetime. The defects occurring on LEDs can be related to different categories which are: the chip, as the central element and the internal and the external packaging. For white LEDs phosphor is added to convert blue LED in a broadband, white appearing spectrum. LEDs are encapsulated in general with transparent material like silicone or epoxy. Essential and important criteria are a stable current path through bonding- solder- and glued connection, a sufficient cooling of the chip by a good thermal contact to the environment or appropriate heat sink, as well as a high extraction of light from the LED by optical elements and areas of reflection. LEDs are available on the market in different technologies. The primary parameters for the function are current and temperature Tj within the active layer, influencing both the power consumption and the color, which significantly determine the lifetime as well. The material and the quality of the epitaxial layers essentially determine the efficiency factor of the generation of light. For different colors differential material-combinations are used: InAlGaP - red, InGaN - blue, GaAlAs - IR, AlGaN - UV. The active zone is a complex structure of epitaxial layers. The LED-chip as the central element of the LED is a semiconductor that generates light in a PN-junction by electron p-hole recombination. It is easy to use.LEDs – Principal Function and Technologies It lets you type in a message, choose speed, color, blink and scroll the text sideways. You can also display banner advertisement, electric sign, marquee sign and just like an electronic bulletin board. Catch a taxi, Concert cheer, Confession of love and Apology.Font Effect, Screen Effect and Border Effect.
Back ground color, Border Color and Back ground Shape.Interface simple operation, the use of LED banner display which needs so much trouble! Preview the effect of the display, enter text and set the mode at the same time preview the effect of the show. Built-in explosion-LED flashlight, party, nightclubs, concert lighting depends on it. Blink Blink Blink mode, you are the most shining focus of the audience.
Scroll to any direction you like, like the left ← → right?
#Led banner effect how to#
Adjust the speed of movement, to be like a train flying or freeze all the lines do ~ like how to how. Custom display font size, to be more or less by your decision. Changes the screen resolution (number of LED display). Change the color of the text and background LED banner Type any messages as many as you like in flashboard. A very simple electronic display adversiting application!įeatures of LED Scroller – LED Banner Display This LED scrolling marquee sample application has a simple interface. It can also display the banner advertisement and electric sign quotes LED. This application screen LED allows you to write a message, select the speed, color, flashing and move the text to the sides.
Become the center of attention in clubs, promote your products in an original way, your imagination is the limit.
Scrolling Display simulates a Led scroller screen to share messages in a funny way to your friends.
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