What is led TV_led TV meaning in Chinese

The full name of LED is "Light EmitTIng Diode", which translates into light-emitting diode, which is a kind of semiconductor component. Because the LED is very sensitive to the passage of current, a very small current can make it shine, and it has a long life and can blink for a long time without damage, so it is widely used as an indicator light for electronic products. The green bean-sized indicators that we see on electronic products that can flash quickly are generally made of LEDs.

Strictly speaking, LED TV refers to a TV that completely uses LED (light emitting diode) as a display device, and is generally used for low-precision display or outdoor large screen. At present, the strict name of the LED TV commonly referred to in the home appliance industry in mainland China is "LED backlight LCD TV", which refers to the LCD TV with LED as the backlight source, which is still a type of LCD. It replaces the traditional fluorescent tube with LED light source, the picture is better, the theoretical life is longer, the production process is more environmentally friendly, and the liquid crystal display panel can be made thinner.

LED LCD TV

For the purpose of improving the picture quality of LCD TVs, TV manufacturers began to use LEDs as the backlight of LCD TVs. Compared with traditional LCD TVs that use fluorescent tubes as backlights, LED LCD TVs can display more realistic colors. In addition to improving the color saturation, the dynamic adjustment of the picture can make the brightness and contrast can be dynamically corrected when displaying different pictures to achieve better picture quality.

Characteristics of LED LCD TV

Ultra-thin

The thickness of the traditional LCD TV is usually about 10cm. LED backlighting is more common in notebook computers. It is applied to TVs, which makes the thickness of the fuselage have a thin leap.

energy saving

The CCFL cold-cathode fluorescent lamp, which is the backlight used in traditional LCD TVs, contains harmful mercury. Although manufacturers are trying to reduce the mercury content in fluorescent tubes, completely mercury-free fluorescent tubes will bring some new technical problems. The LED backlight does not contain mercury, which is in line with the environmental protection fashion. The LED backlight is also very power efficient. The internal driving voltage of LED is much lower than CCFL, and the power consumption and safety are better than CCFL.

long life

The rated service life (semi-bright) of different CCFLs is between 8,000 and 100,000 hours. In order to enhance performance, the service life of CCFL backlight with improved design will be lower. The LED backlight can reach about twice the CCFL. Therefore, the service life of LED backlight is usually longer than CCFL.

Wide color gamut

In fact, it is the picture quality. According to different luminous colors, LEDs can be divided into white LED backlights and RGB-LED backlights. The advantage of white LED technology is mainly low power consumption, while the advantage of RGB-LED backlight is excellent color expression. The RGB-LED backlight source realizes a wide color gamut range that cannot be achieved by traditional CCFL light sources through LED devices that can emit high-purity red, green, and blue light. At present, mainstream RGB-LED backlight sources can already reach 105% of the NTSC color gamut range, and more powerful LED devices can achieve more than 120% of the NTSC color gamut range.

For LCD TVs, its unique imaging principle that uses the arrangement of liquid crystal molecules to control external light determines that the LCD panel is the key to affecting the quality of the display. Therefore, when buying a TV, the key indicator is still to see whether this product is a high-quality panel, LED does not play an absolute role!

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