Category: LED Knowledge

Brief Introduction

As a light source with great development potential, LEDs have attracted more and more attention due to their long lifespan, firm structure, low power consumption, and flexible form factor. In recent years, LEDs, especially monochromatic LEDs, have been widely used in large screens, signal lights and landscape lighting. With the continuous development of LED technology, new breakthroughs have been made in parameters such as the luminous efficacy, color rendering, color temperature of white LEDs, power of a single LED, and luminous flux of LED modules.… Read More

RGB three Primary Colors Synthesized White Light

For the production of white LEDs synthesized with RGB three primary colors, the following issues must be paid attention to:

(1) wavelength of light

The main wavelengths of the light emitted by the three LED chips are generally: red light is 615~620nm, green light is 530~540nm, and blue light is 460~470nm. To achieve the best light effect, the best main wavelength ratio can be selected experimentally in the main wavelength range of the three kinds of light.… Read More

History of LEDs

Initial development

LED is short for Light Emitting Diode. LED is also a type of diode, which is a solid-state semiconductor device that can convert electrical energy into light energy. It can directly convert electrical energy into light energy.

In 1955, Rubin Braunstein of the Radio Corporation of America discovered the infrared radiation effect of gallium arsenide (GaAs) and other semiconductor alloys.… Read More

2. Analysis of the Causes of the Failure Phenomenon Caused by the Open Circuit of the Solder Joints of the LED Light

2.2 Packaging Process

Every process in the packaging process must be carefully operated, and any negligence in any link is the cause of failure.

Spot crystal, solid crystal process

In the process of spot crystal and solid crystal, too much or too little silver glue (for single solder joint chip) will be detrimental to the lamp.… Read More

Overview

We often encounter situations where the LED does not light up. Encapsulation companies, application companies, as well as units and individuals who use them may encounter them. This is what people in the industry call the failure of the lamp. There are only two reasons for this:

First, the leakage current of the LED is too large, which causes the PN junction to fail, so that the LED lamp does not light up.… Read More