What is the biggest difference between LCD splicing screen and LED splicing screen?
In the consumer interface of many splicing screens in the large-screen splicing industry, LCD splicing screens (referred to as Liquid Crystal Display) generally refer to liquid crystal splicing screens; LEDs generally refer to liquid crystal splicing screens using LED backlights. Therefore, it is not appropriate to compare the LCD LCD splicing screen and the LED LCD splicing screen.
In the current market, LCD splicing screens are mainly divided into two categories, one is a liquid crystal splicing display using a conventional CCFL (cold cathode fluorescent tube), and the other is a liquid crystal splicing display using an LED (light emitting diode) backlight. Many consumers directly refer to the first type of spliced ​​display as the LCD, and the second type of spliced ​​display is called the LED. If the statement is not correct, it does exist widely.
Because, for many consumers' "LCD LCD splicing screen and LED LCD splicing screen difference", the real difference is "the difference between LED-backlit liquid crystal display and traditional CCFL-backlit liquid crystal display".
At present, LED backlights have replaced the traditional CCFL backlight in the civilian-grade display market. Below, the company will introduce two kinds of backlights from the perspective of their advantages and disadvantages.
First, the advantages and disadvantages of LED backlight source
advantage:
1. The screen can be made thinner. We pay attention to some LCD monitors. You can see that there are several filament CCFL tubes arranged in order. In order to make the screen shine evenly, you need to add some other devices, so you can't do very much. Thin; and the backlight is different, the LED backlight itself is a flat luminescent material, no need to add other devices.
2. It will not turn yellow and dark. CCFL fluorescent lamp is the same as fluorescent lamp. It will age after a long time, so the traditional notebook screen will turn yellow and dark after two or three years, and the life of LED backlight screen will be much longer, at least two. three times.
3. More energy-saving LED is a kind of semiconductor, working under low voltage, simple structure and low power consumption.
4. Mercury in more environmentally friendly CCFL lighting has a great pollution to the environment, and harmless recycling has great difficulties.
Disadvantages:
1. The relative price is higher. At present, the difference between the price and the traditional CCFL backlight display is between 100-300 yuan in the same specification.
Second, the advantages and disadvantages of CCFL backlight
advantage:
1. Time to market, technology is relatively mature
2. The color is more stable, professional-grade display is still used
3. The price is relatively low
Disadvantages:
1. Short service life. CCFL backlights typically have a lifetime of 15,000 hours to 25,000 hours. After 2 to 3 years of use, the LCD screen will become dark and yellow, which is caused by the short life cycle of the CCFL.
2. The structure is complicated and the brightness output uniformity is poor. When displaying an all-white or all-black screen, the difference between the edge of the screen and the brightness of the center is very noticeable.
3. Larger size
4. High power consumption and large heat generation
Simply put, LCDs and LEDs are two different display technologies. LCDs are displays made up of liquid crystals, while LEDs are displays made up of light-emitting diodes. Compared with CCFL displays, LED displays have advantages in terms of brightness, power consumption, body size, and lifetime. CCFL backlights have advantages in terms of color performance and price. To understand the difference between the two in more detail, we must start with the principles of CCFL and LED.
Deweiya technology specializing in the production: LCD splicing, LCD splicing wall, 46-inch 55-inch 60-inch LCD splicing screen, touch one machine, Samsung LCD screen, consulting hotline Mr. Yang Zhou QQ http://
Http://news.chinawj.com.cn
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