Nowadays people are pursuing a kind of enjoyment. Whether it is spirit or material, television, computer and other indispensable equipment are valued by people. Products that are dazzling on the market are often confusing, such as the common LCD and LED. The difference between them is very confusing. Today, the author explained to everyone the difference between lcd and led and their respective characteristics.
The principle of LCD and LED
LCD is an abbreviation for Liquid Crystal Display. Its structure is mainly to place liquid crystals in two parallel glasses. There are many vertical and horizontal small wires in the middle of this parallel two glass, and the rod crystal is controlled by energization or not. The molecules change direction and refract light to produce pictures.
LED is the abbreviation of light-emitting diode. Its working principle is that in the PN junction of some semiconductor materials, the injected minority carrier and the majority carrier compound will release the excess energy in the form of light. The electric energy is directly converted into light energy; the PN junction adds a reverse voltage, and the minority carriers are difficult to inject, and then do not emit light. This kind of diode which uses the principle of injection electroluminescence is called light-emitting diode, which is what we commonly call LED.
Conclusion: The biggest difference between LCD and LED lies in the application of two different display technologies. The LCD is a display screen composed of liquid crystals, and the LED is a display screen composed of light-emitting diodes; all major differences are also derived from here. Come out and analyze.
The difference between LCD and LED
First, the brightness, LED display single element reaction speed is 1000 times LCD LCD screen, its brightness is also more advantageous than LCD LCD screen, LED display screen can also be taken under the glare, and adapt Low temperature of minus 40 degrees.
Second, power consumption, power consumption is the most concern of people, LED power consumption compared with LCD, the ratio of about 10:1, in this regard, LED has a great advantage.
Third, the viewing angle, LCD display angle limit is very large, this is a very lively people headache, as long as the deviation is slightly larger, you can not see the original color, and even can not see anything; LED Provides a viewing angle of up to 160°.
Fourth, the refresh rate, the use of electrical energy LED into light energy, using the injection principle, so its higher refresh rate, and then better in the video processing.
Fifth, contrast ratio, the relatively high-contrast LCD display that is currently known is 350:1, but in many cases, it cannot meet various needs, but LED display can achieve higher and more extensive use.
Sixth, the appearance of LED based on the use of light-emitting diodes, the relative LCD, the display can do a thinner.
Seventh, the scope of use, LED display application range is wider than the LCD display, it can display a variety of text, numbers, color images and animation information, but also can play TV, video, VCD, DVD and other color video signals, more important It is possible to use multiple display screens for online broadcast.
Eighth, the service life, LED display can generally support about 100,000 hours, under normal circumstances, can be used for decades, but LCD is much less.
Ninth, color, LED screen than the LCD screen color is more true, because LED TV's color gamut is much more than LCD.
