LED energy-saving lamp is a new generation of lighting source after the compact fluorescent lamp (that is, ordinary energy-saving lamp). LED energy-saving lamp is environmentally friendly and does not contain mercury, can be recycled, small power, high efficiency, long life, that is, on that is bright, resistant to frequent switching, light decline is small, rich in color, adjustable light, rich changes. An LED, short for Light Emitting Diode, is based on an electroluminescent semiconductor material placed on a shelf with a lead and sealed with an epoxy resin around it to protect the inner core, so the LED is resistant to earthquakes. The core part of light-emitting diode is composed of p-type semiconductor and n-type semiconductor wafer, there is a transition layer between p-type semiconductor and n-type semiconductor, called p-N junction.

5611BS LED 5611BS 14-segment 5611AS display 5611AS

However, due to consumers’ low awareness of LED energy-saving lamps, manufacturers lack of PUBLICITY and promotion of LED energy-saving lamps in the household field, which has also become an important issue affecting the application of LED energy-saving lamps in the household field. LED lamp is currently the most energy-saving lighting products, because it can directly convert electric energy into light energy, power saving up to 80%, the life of more than ten years.

Common-Cathode CC 8011AH 7-Segment digit 8011AH LED Common-Anode CA 8011BH Display 8011BH 0.80 inch
Common-Cathode CC CL8011AH 7-Segment digit CL8011AH LED Common-Anode CA CL8011BH Display CL8011BH 0.80 inch

In the future, with the improvement of people’s environmental awareness. LED energy-saving lamps will still enter ordinary families in large numbers. At the government level, more and more attention will be paid to the market management of LED energy-saving lamps, giving subsidies to enterprises and standardizing market order. It is believed that with the continuous progress of technology, consumers will enjoy better LED energy-saving products, and the market price of LED will become more and more standardized.

Common-Cathode CC 3921AB LED 3921AB 0.39 inch Common-Anode CA 3921BB 7-Segment 3921BB Display

According to the information provided to this reporter by the director of Riad, Riad provided 1,500 square meters of LED display screens for the urban construction of Qatar, covering the scenes of stadiums, the appearance of fans’ stadiums, the live broadcasting of TV stations, outdoor advertising, hotels and coffee bars. Another manufacturer, Zipoptronics, has supplied a 3,000-square-meter P5 LED display for the Qatar World Cup, mainly for the World Cup live fan events.

Common-Cathode CC CL4012AH LED CL4012AH 0.40 inch Common-Anode CA CL4012BH 7-Segment CL4012BH Display

X-RAY and metallographic section analysis revealed: There was a dendritic foreign body between the two electrodes of the failed LED and the substrate. It was also found that the electrode of part of the failed sample was shorted with the bottom substrate when it was ground to the corresponding position. Meanwhile, EDS analyzed that the main component of the dendritic foreign body was Sn, indicating that the short circuit (not bright) of the LED was caused by the Sn migration short circuit between the electrode and the substrate. These tree-shaped foreign bodies are located between the organic matter on the substrate.

LED 8031AB 7-Segment 8031AB 0.80-inch 8031BB Display 8031BB

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