Joke Collection Website - Mood Talk - What should I pay attention to when buying LCD TV? Five skills of choosing LCD TV.
What should I pay attention to when buying LCD TV? Five skills of choosing LCD TV.
Five skills/points in choosing LCD TV;
1, resolution
For LCD TV, resolution is one of the important parameters. The resolution of LCD TV is fixed, unlike computer LCD, which can be adjusted. The fixed resolution of LCD TV is also its best resolution, and high resolution can be easily compatible with HDTV. The resolution supported by traditional CRT TV is more flexible, while the pixel spacing of LCD TV is fixed, so it doesn't support as many display modes as CRT TV. The best resolution of LCD TV is also called the maximum resolution. At this resolution, LCD TV can display the best images. At present, LCD TVs mainly have several common resolutions, such as 800×600, 1280×768, 1366×768, 1920× 1080.
2. Response time
The so-called "response time" is the response speed of the LCD to the input signal, that is, the response time of the LCD from dark to bright or from bright to dark. Obviously, the smaller the "signal response time" indicator, the better. The shorter the response time, the user will not feel ghosting or dragging when watching the moving picture. Moreover, the requirements for LCD TVs are higher than those for LCD monitors. Because TV mainly plays active and changing dynamic pictures, the shorter the signal response time, the better the display effect.
Tip: Look at the TV screen from multiple angles, for example, choose the right screen from the angle, then offset some angles and stand on a horizontal line with the TV screen to see if you can see the image; When checking the machine, you can also let the promoters play some pictures at a uniform speed to see if the picture display action is coherent and whether there is a phenomenon of picture tailing.
Step 3 connect
At present, the best interface standard of LCD TV is HDMI, which can transmit audio and video signals simultaneously. This interface can not only simplify the connection and reduce the connection burden, but also provide huge bandwidth for digital signal transmission. In the future, disk drives, computers, home theaters and other devices will adopt this interface.
4. The screen is not good
Bad point, also known as "dead point". Bad spots appear on the display screen, which may be black spots, green spots or red spots. The problem of bad spots is one of the biggest problems that plague LCD TV. The bad spots on the LCD panel can't be repaired, so we can only replace the LCD panel, which accounts for at least 70% of the total LCD TV cost.
Tip: Test monochrome pictures more when buying, and then pay attention to whether there are pixels with abnormal colors. The easiest way is to make the screen completely black and see if there are any bright spots in the pure black. Then make the screen all white to see if there are any black spots. Finally, change it to red, green and blue, and check the integrity of the color point. If there are too many bad points in the inspection process, it is best not to buy them.
5, brightness and contrast
In fact, the products with brightness of 500 lumens and contrast of 600: 1 can fully meet the viewing needs, and the higher the brightness, the better. Brightness uniformity is closely related to the number and configuration of backlight and reflector. A better quality TV has uniform brightness and no obvious bright areas.
Tip: When purchasing, you can let the sales staff put down some discs with particularly dark scenes under normal lighting conditions. When you adjust the contrast of the TV to the middle, see if you can see the details of the picture clearly. Then put some particularly bright pictures. If the details of the picture are lost and only a piece of glistening is seen, then the contrast is not very good. In this regard, international brands may do better than small and medium-sized brands, high-priced LCD is better than low-priced LCD, and small size is better than big screen.
Matters needing attention in LCD TV purchase:
Deception of soft screen and hard screen
When watching TV in the store, you can often hear promoters mention the difference between hard screen and soft screen when introducing machines. After the promoter explained, it actually refers to the trace left by the finger sliding on the LCD screen. If you can see obvious traces after gently sliding, it means that it is a soft screen, and it is difficult for a hard screen to slide out of the traces. So when you bargain like a promoter, he will tell you that this is a hard screen, which is different from ordinary soft screens. Soft screen machines at this price can be used, and then refer to a worn-out model casually.
In fact, soft screen has nothing to do with hard screen and LCD panel. It is more imaginative to say that the hard screen is high-grade, because the relationship between the hard screen and the soft screen is the characteristic of the two panels. For example, Samsung's S-PVA panel is a soft screen design, which is characterized by true color and high contrast. The IPS panel of LPL is hard screen design, which is characterized by bright colors, large viewing angle and fast response. Both of the above panels belong to high-end panels. Can you say that Samsung's S-PVA is not as good as IPS? So you don't have to waste your breath when you meet such a promoter.
Panel types are also tricky.
70% of the cost of LCD TV comes from LCD panel. Promoters often make a fuss about it, such as which product uses Sharp screen, Samsung screen and so on. In fact, they don't even know what a Samsung screen is. For consumers, it is easy to be deceived. In fact, this does not mean that a three-star screen is necessarily good, nor does it mean that the screen in Taiwan Province Province is necessarily bad. The key is to rely on display technology and DAC panel drive. Good image quality is not only created by the panel.
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