[PConline sea election shopping guide] Many friends may have this view: the more expensive as possible. It is undeniable that your products are expensive and are superior to other products, but are they expensive for you? This is not necessarily true. For TVs, some products add a certain function, such as 3D, smart, and the like, and the price will be much higher than those products without these functions, and these functions are not useful to some friends, so The part of the money spent more will be worthless.
Demystifying the National Top 5 Hot LCD TVs
With the continuous upgrading of products, fewer and fewer products adopt CCFL backlight. At present, low-end LCD TVs have started to use LED backlights, and LED TVs have attracted many consumers with their slim appearance and excellent power consumption.
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What is a CCFL backlit TV?
CCFL's English name is Cold Cathode Fluorescent Lamp. The Chinese name is Cold Cathode Fluorescent Lamp. It has advantages of high power, high brightness and low energy consumption. It is widely used in displays, lighting and other fields. The principle of CCFL is that when high voltage is applied to both ends of the lamp, a small number of electrons in the lamp will impact the electrode at high speed to generate secondary electron emission and begin to discharge. Because the cathode temperature is lower, it is named. According to the current development status, it is estimated that CCFL television will exit the market soon.
What is LED-backlit TV?
Although many television manufacturers directly advertise their products in the name of “LED TVsâ€, it sounds like a new type of TV, but in fact LED TVs are “LED (light emitting diode) backlight LCD TVs†The abbreviation, as the name implies, belongs to a branch of LCD TVs. It only uses the CCFL backlight technology used in ordinary LCD TVs instead of LED backlight technology. Different from OLED TVs, LED TVs are exactly LED-backlit LCD TVs. Although the abbreviation only differs by one letter, the latter is a technology that is completely different from LCD TVs. It adopts the principle of active light emission and is currently applied in home applications. Not extensive.
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In the past, the prices of TVs equipped with 3D functions must be very high, but the current situation has changed a lot. There are a lot of affordable 3D TVs on the market. At present, the 3D TVs currently sold are mainly divided into two types: shutter-type and polarized type. Let's first look at these two types of 3D TVs.
Active Shutter 3D technology is achieved by alternating the images seen by the left and right eyes so that your brain fuses the two images together, resulting in a 3D sense of a single image. The screen will show the picture to the left eye first. At this time, the glasses will cover your right eye at the same time, which is a bit like a pirate's blindfold. Then, the screen will quickly switch to the right eye. At this time, the glasses will turn to cover your left eye and make sure that the picture you see is correct.
Active shutter 3D technology alternates between left and right eye images
The principle of polarization 3D TV is to add a layer of polarization coating on the screen, and the LCD screen outputs two different images in an interlaced manner. Through polarization glasses, the two images are simultaneously entered into the left and right eyes to form a 3D image.
Polarized 3D glasses are lightweight and inexpensive
The advantage of the active shutter 3D TV is that the 3D effect is prominent, but the glasses are high in price and the screen brightness is low; the polarized 3D TV is excellent in comfort and the glasses are cheap, but the screen resolution is halved, and the effect is not active shutter type.
National Day Golden Week is coming soon, many families are planning to buy flat-screen TVs during this period, and the price issue is the focus of everyone's attention. Below, the author reveals the bottom price of the most recent popular models for everyone, and you can use them as a reference for your purchase. .
Portable Megaphone,High Quality Megaphone,Wifi Megaphone,Megaphone Small
yucheng county huibang electric technology ltd , http://www.hbspeaker.com