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How to buy a TV
2021-09-09
When buying a TV, you generally need to look at the following parameters:
1. Resolution:
Resolution is an important criterion for measuring the performance of LCD TVs. The mainstream resolution parameters in the current market are mainly 1366×768 and 1920×1080. The definition of high-definition flat-panel TVs in the horizontal and vertical directions is higher than 720 lines. Simply put, a true high-definition flat-panel TV must meet the condition that the resolution is higher than 1366×768.
2. Response time:
Response time is also very important. It will determine whether there will be blur and tailing when displaying high-speed dynamic images, reminding everyone: The current mainstream 8 millisecond response time can basically meet the requirements of use. Generally speaking, the faster the response time, the less tailing and afterimages will appear on the LCD TV. It's best to see the effect of the actual action movie before you buy it.
3. Brightness and contrast:
In fact, you can directly ignore the brightness and contrast parameters provided by the manufacturer, and directly rely on your own visual experience. The method is to check the brightness and contrast of the screen display at a distance of 5 meters away, pay attention to the details of some dark scenes, and make a few more models. product comparison.
4. Size:
It is necessary to understand the size of the house where the TV is placed, so as to determine what size TV should be purchased. For example, the best viewing distance for a 42-inch LCD TV is 2.5 meters to 3.3 meters, a 47-inch LCD TV is 3 meters to 4 meters, and a 55-inch LCD TV is 4.5 meters to 5.5 meters. Choose the size of the TV depending on the situation.
5. HDMI interface:
The HDMI interface is a digital interface that can transmit audio and video signals at the same time. It not only simplifies the connection and reduces the burden on the connection, but also provides a huge bandwidth for digital signal transmission. Emphasizing the importance of this interface is mainly that new and future disc players, computers, home theaters and other devices will actively adopt this interface, and using this interface to connect to these devices will undoubtedly get the best results. .
6. Dead pixels:
Be sure to carefully observe whether there are bright and dark spots on the screen before purchasing. You can look for dark spots when the screen is white, and bright spots when the screen is black. Tell everyone a trick to distinguish dead spots: look for dark spots when the screen is full green, and bright spots when the screen is full blue. Once there are bright spots or very dark spots It's easy to see.
7. Remote control:
The easiest thing to overlook when choosing is the remote control. The remote control has strong resilience. A good remote control gives people a very solid feel, while a poor remote control usually looks very light. The reason is that the material used in the shell is different except for the actual workmanship of the components inside. In terms of the tightness of the upper and lower shells of the remote control, the good combination is very tight, and the poor combination is loose. A good button can be pressed with appropriate strength, with good elasticity and strong rebounding force. Finally, you can also tap to listen to the sound. The bad remote control sounds like it is empty inside, while the good remote control sounds like solid due to its real workmanship.
8. Design:
Choosing an LCD TV also needs to pay attention to whether the humanized design is in line with your own needs. For example, the integration of the appearance of flat-panel TVs and home design is currently receiving unprecedented attention, and the appearance cannot be ignored. For example, functions such as active backlight adjustment and wireless earphone reception will affect the experience of use. In particular, the design of the speaker is particularly important, because bad listening will definitely affect the viewing effect. Compared with the common traditional two-sided vertical speaker design, the horizontal type gradually became popular.
As the current 16:9 LCD screen is the mainstream of LCD development, this makes the LCD TV extend the length of the LCD TV body in the vertical direction, and the horizontal LCD TV speaker design makes the overall layout of the 16:9 LCD TV more coordinated. In addition, the horizontal speaker design is conducive to the performance of vocal dialogue, making people more immersive, and its function is similar to the center speaker in a surround sound system. In a surround sound system, 70% of the sound comes from the center speaker.
9. After-sales service: (The wall-mounted TV needs professional installation)
1. Resolution:
Resolution is an important criterion for measuring the performance of LCD TVs. The mainstream resolution parameters in the current market are mainly 1366×768 and 1920×1080. The definition of high-definition flat-panel TVs in the horizontal and vertical directions is higher than 720 lines. Simply put, a true high-definition flat-panel TV must meet the condition that the resolution is higher than 1366×768.
2. Response time:
Response time is also very important. It will determine whether there will be blur and tailing when displaying high-speed dynamic images, reminding everyone: The current mainstream 8 millisecond response time can basically meet the requirements of use. Generally speaking, the faster the response time, the less tailing and afterimages will appear on the LCD TV. It's best to see the effect of the actual action movie before you buy it.
3. Brightness and contrast:
In fact, you can directly ignore the brightness and contrast parameters provided by the manufacturer, and directly rely on your own visual experience. The method is to check the brightness and contrast of the screen display at a distance of 5 meters away, pay attention to the details of some dark scenes, and make a few more models. product comparison.
4. Size:
It is necessary to understand the size of the house where the TV is placed, so as to determine what size TV should be purchased. For example, the best viewing distance for a 42-inch LCD TV is 2.5 meters to 3.3 meters, a 47-inch LCD TV is 3 meters to 4 meters, and a 55-inch LCD TV is 4.5 meters to 5.5 meters. Choose the size of the TV depending on the situation.
5. HDMI interface:
The HDMI interface is a digital interface that can transmit audio and video signals at the same time. It not only simplifies the connection and reduces the burden on the connection, but also provides a huge bandwidth for digital signal transmission. Emphasizing the importance of this interface is mainly that new and future disc players, computers, home theaters and other devices will actively adopt this interface, and using this interface to connect to these devices will undoubtedly get the best results. .
6. Dead pixels:
Be sure to carefully observe whether there are bright and dark spots on the screen before purchasing. You can look for dark spots when the screen is white, and bright spots when the screen is black. Tell everyone a trick to distinguish dead spots: look for dark spots when the screen is full green, and bright spots when the screen is full blue. Once there are bright spots or very dark spots It's easy to see.
7. Remote control:
The easiest thing to overlook when choosing is the remote control. The remote control has strong resilience. A good remote control gives people a very solid feel, while a poor remote control usually looks very light. The reason is that the material used in the shell is different except for the actual workmanship of the components inside. In terms of the tightness of the upper and lower shells of the remote control, the good combination is very tight, and the poor combination is loose. A good button can be pressed with appropriate strength, with good elasticity and strong rebounding force. Finally, you can also tap to listen to the sound. The bad remote control sounds like it is empty inside, while the good remote control sounds like solid due to its real workmanship.
8. Design:
Choosing an LCD TV also needs to pay attention to whether the humanized design is in line with your own needs. For example, the integration of the appearance of flat-panel TVs and home design is currently receiving unprecedented attention, and the appearance cannot be ignored. For example, functions such as active backlight adjustment and wireless earphone reception will affect the experience of use. In particular, the design of the speaker is particularly important, because bad listening will definitely affect the viewing effect. Compared with the common traditional two-sided vertical speaker design, the horizontal type gradually became popular.
As the current 16:9 LCD screen is the mainstream of LCD development, this makes the LCD TV extend the length of the LCD TV body in the vertical direction, and the horizontal LCD TV speaker design makes the overall layout of the 16:9 LCD TV more coordinated. In addition, the horizontal speaker design is conducive to the performance of vocal dialogue, making people more immersive, and its function is similar to the center speaker in a surround sound system. In a surround sound system, 70% of the sound comes from the center speaker.
9. After-sales service: (The wall-mounted TV needs professional installation)
The after-sales service is mainly based on the warranty period of the LCD screen. Under normal circumstances, manufacturers provide a free warranty for the whole machine for one year, and free warranty for other parts for three years. For LCD TVs that need to be wall-mounted, it is recommended to ask the manufacturer to come and install them professionally. According to the country’s newly released flat-panel TV installation service standards this year, major manufacturers should be able to provide door-to-door installation services.
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