LED chip/lamp bead: With the increase of LED light efficiency and the decrease of chip area, the number of chips that can be cut out of a single wafer increases significantly, which also reduces the cost of lamp bead. Taking 1010 as an example, the price drops 94% from 0.9 yuan/lamp in 2010 to about 0.03 yuan/lamp in 2020, and is expected to further drop to 0.015 yuan/lamp in 2021. LED application: Also taking display as an example, the price of P2.5 display screen has dropped by more than 90% in 8 years, from about 150,000 yuan to less than 10,000 yuan, and it has dropped by about half every 2 years on average.
5032AGG LED
5032AGG 0.50 inch
5032BGG 7-Segment
5032BGG Display
Led and diode difference is not big, LED doped in PN junction with some compounds: gallium, arsenic, phosphorus, nitrogen and so on. These compounds are doped into the P and N zones, and then the pins are added, and the epoxy resin is used to cover them, making them strong enough to withstand falls and earthquakes. Why mix different compounds? To give off different colors of light. At present, LED is popular because of its high efficiency, and many people think it is a new technology. In fact, the earliest LED has existed for more than 50 years. In 1962, the United States developed the optical secondary tube.
4042AB LED
4042AB 0.40 inch
4042BB 7-Segment
4042BB Display
