What's the difference between LED backlight and LED led?
The LED light emitting diode is a light source, and the LED backlight is a light source that emits light from a point light source into a surface light source
LED is a semiconductor light-emitting two stage tube. Backlight can be said to be one of the applications of LED. At present, the application of monochrome LED mainly focuses on instructions. White light LED, especially high-power white light applications in the field of lighting, is a new generation of energy-saving light source logo.
Before the LCD backlight is lamp, defects of heat, power consumption, short service life, now LED brightness is high, so you can use LED to replace the original lamp for backlight, LED backlight is composed of a plurality of LED.
Light emitting diodes, referred to as LED. Made from compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N) and so on. When electrons and holes are combined, they can radiate visible light, so they can be used to make light-emitting diodes. In circuits and instruments, as an indicator, or in combination with text or digital display. GaAs diodes glow diode gap, green silicon carbide, yellow light diode, light emitting diode gan. Because of the chemical properties and organic light-emitting diode OLED and inorganic light-emitting diode LED.
Mainly by the light source, light guide plate, optical diaphragm, plastic frame and so on. The backlight source has the characteristics of high brightness, long service life, uniform luminescence, etc.. At present, there are three kinds of backlight types, EL, CCFL and LED, which are divided into side light type and vertical type according to the different position of light source distribution. With the development of LCD module to brighter, lighter and thinner, the side light CCFL backlight source has become the mainstream of the development of backlight. The development of the backlight can be traced back to the second world war. The ultra small tungsten filament lamp was used as the back light of the aircraft instrument. This is the initial stage of the development of the backlight. After half a century of development, the backlight has become an independent subject of electronics, and has gradually become the focus of research and development.
