source:other news release time:2023-05-25 Hits: Popular:led screen wholesaler
In the 21st century today, the backlight has developed rapidly, and new technologies and new products have been launched. LED backlight has gradually entered industrialization. With a certain scale, compared to CCFL, LED has a clear energy -saving advantage. In terms of improvement, the domestic upstream supporting factories cannot keep up with the international situation. Technical exchanges and interaction improvements and the application promotion of sample products are the biggest obstacles to LEDs into the field of LCD backlight. As one of the important accessories in LCD products, Backlight sources are developed rapidly, and new technologies and new products are launched. Among them, LED (light -emitting diode) backlight market share is gradually increasing. In the laptops, monitors and televisions, the backlight of the CCFL (cold cathode fluorescent lamp) has been using it. Since 2008, the use of LED backlight in notebooks and display products has continued to expand. Relevant statistics show that in the first quarter of 2009, the shipment of LED backlight was 8 times the same period in 2008. At the same time, in the field of LCD TVs that unify the world of CCFL, with the launch of the first LED backlight TV in 2008, LED backlight TV products on the domestic market also appeared in the market like rain.
The LED backlight structure is mainly divided into two types, single -series power supply or multiple series of series/parallel power supply. Although a single series of connected power supply is used in a low constant current, the input power supply must be increased to the total directional voltage level that complies with the connected power supply in order to drive the LED. On the contrary, although multiple groups of series/connected LED power supply require higher constant currents to drive, it reduces the demand for high voltage. The difference in demand for boost converters depends on cost, complexity, and energy conversion efficiency (for users, equivalent to the battery life between the charging cycle). In the end, the best solution will be determined based on the product characteristics, size and efficiency requirements of the device itself.
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