Choose the TV size according to the distance: the living room is 55 inch TV between 2.5m-3m, 65 inch TV between 3m-3.5m, 75 inch TV between 3m-4m, 85 inch TV between 4m-4.5m, 98 inch or 110 inch TV larger than 5m.
电视机的尺寸应该和沙发距离保持一定的比例，如果尺寸买的太大了，小朋友很容易变成近视眼，以下尺寸要记牢，沙发到电视机距离 3 米，电视机就买 40 寸，3.5 米买 50 寸，4.5 米买 60 寸，以此类推。
The size of the TV set should keep a certain proportion with the distance from the sofa. If the size is too large, children will easily become myopia. Remember the following dimensions. If the distance between the sofa and the TV is 3 meters, the TV set will buy 40 inches, 3.5 meters will buy 50 inches, 4.5 meters will buy 60 inches, and so on.
The TV should not face the window. The TV should face the window. First of all, there is a problem of reflection on the wall. After a long time, people will feel dizzy. Secondly, the light coming in from the window will refract through the TV screen, which is a secondary injury to the eyes. It’s even more dangerous than buying the wrong size TV.
根据目前主流电视的不同尺寸，为了让大家更健康的观看电视，下面分两种比例，为大家总结了各尺寸液晶电视相对应的最佳收看距离，所谓 16:9 就是屏幕宽和高的比值。老式电视一般是 4:3，现在的一般都是 16:9 了。一般认为 16:9 更符合人眼视觉特性。
According to the different sizes of current mainstream TV, in order to make people watch TV more healthily, the following two proportions summarize the best viewing distance corresponding to each size of LCD TV. The so-called 16:9 is the ratio of screen width and height. The old TV is usually 4:3, now it’s usually 16:9. Generally speaking, 16:9 is more suitable for human visual characteristics.
Watching TV usually takes a long time, the appropriate size can get better viewing effect, if the size deviation is too far, watching for a long time will cause visual fatigue, so I suggest you measure the viewing distance before buying TV, so as to better determine the required size.
分辨率是衡量液晶电视性能高低的一个重要标准，目前市场主流的分辨率参数主要是 1366× 768 和 1920×1080。高清平板电视机在水平和垂直方向上的清晰度要高于 720 线，简单来说就是真正的高清平板电视机必须要满足分辨率高 1366× 768 这一条件。
Resolution is an important standard to measure the performance of LCD TV. At present, the mainstream resolution parameter in the market is 1366 × 768 and 1920 × 1080。 The definition of HD flat panel TV is higher than 720 lines in horizontal and vertical direction. In a word, the real HD flat panel TV must meet the requirement of 1366 high resolution × 768.
2. Response time
响应时间也很重要，它会决定在显示高速动态画面时是否会出现模糊和拖尾现象，购伙伴的专家提醒大家：目前主流的 8 毫秒响应时间基本可以满足使用要求。一般来说反应时间越快，液晶电视就会越少出现拖尾、残影现象。最好在购买前看看实际播放动作片的效果。
The response time is also very important. It will determine whether there will be blurring and tailing when displaying high-speed dynamic pictures. The experts from the purchasing partners remind us that the current mainstream 8 ms response time can basically meet the use requirements. Generally speaking, the faster the reaction time, the less trailing and residual shadow will appear in LCD TV. It’s best to see the actual effect of playing action movies before buying.
3. Brightness and contrast
其实消费者可以直接忽略厂商提供的亮度和对比度参数，直接以自己的目测感受为主，方法为在 5 米以外的距离，查看屏幕显示亮度和对比度，注意一些黑暗场景中的细节表现，多做几款产品对比。
In fact, consumers can directly ignore the brightness and contrast parameters provided by manufacturers, and directly focus on their own visual perception. The method is to check the brightness and contrast of the screen display at a distance of 5 meters, pay attention to the details of some dark scenes, and compare several products.
Experts suggest that we should understand the size of the house where the TV is placed, so as to determine what size of TV we should buy. This is a way to choose the size of the TV set according to the actual situation at home.
5. HDMI interface
HDMI interface is a digital interface that can transmit audio and video signals at the same time. It can not only simplify the connection and reduce the burden of connection, but also provide a huge bandwidth for digital signal transmission. Emphasizing the importance of this interface lies in the fact that the new and future CD players, computers, home cinemas and other devices will actively adopt this interface, and the application of this interface to connect with these devices will undoubtedly achieve the best results.
6. Bad points
Before buying, be sure to carefully observe whether there are bright and dark spots on the screen. You can look for dark spots when the screen is white and bright spots when the screen is black. Experts from partners tell you a trick to identify bad spots: look for dark spots when the screen is all green and bright spots when the screen is all blue. Once there are bright spots or dark spots, it’s very easy to see them. In addition, it’s better to reach an agreement with the merchant about the bad points before paying, and write it into the contract.
7. Sound quality
各个厂家在这方面都有自己的卖点，什么 Surround 三维空间环绕声、SRS 虚拟环绕声、BBE 立体声音效、分频扬声器、DDAS 数字动态声谷、各式各样的音频解码芯片和引擎，可谓花样繁多。但是这些东西除了部分专业人士和音乐发烧友可以看懂之外，对普通的消费者并没有带来实际的意义。无论其炒作得如何热闹，其实实际效果基本是大同小异。所以消费者挑选时应该拿定主意，听一听音质好坏最关键。
All manufacturers have their own selling points in this aspect, such as surround 3D space surround sound, SRS virtual surround sound, BBE stereo sound effect, frequency divider speaker, DDAs digital dynamic sound Valley, various audio decoding chips and engines. But these things in addition to some professionals and music enthusiasts can understand, the ordinary consumers did not bring practical significance. No matter how lively the hype is, the actual effect is basically the same. So consumers should make up their mind when they choose to listen to the sound quality.
8. Remote control
The most easily overlooked is the remote control. Good, the remote control has strong resilience. A good remote control gives people a very solid feeling, while a poor remote control usually appears very light. The reason is that in addition to the actual workmanship of the components inside, the material used in the shell is different. The combination degree of the upper and lower shell of the remote control is very close, the good combination is very close, and the poor combination is loose. A good key can be pressed with proper force, with good elasticity and strong rebound. Finally, you can tap and listen to the sound. A poor remote control sounds like it’s empty, while a good remote control sounds like it’s solid because it’s really made.
选择液晶电视机还需要关注人性化设计是否与自己使用需求合拍。如平板电视机外观与家居设计的融合眼下受到前所未有的关注，外形也不能不考虑。再比如像主动背光调节，无线耳机接收等功能都会影响到使用感受。特别是音箱的设计尤其重要，因为听不好一定就会影响看的效果。与常见的传统两侧立式音箱设计相比，卧式渐渐开始流行。由于目前 16∶9 的液晶屏已经是液晶发展的主流，这使得液晶电视在纵向延伸了液晶电视机身长度，卧式液晶电视音箱设计使得 16∶9 显示屏的液晶电视整体布局更加协调。另外卧式音箱设计有利于人声对白的表现，让人更身临其境，其作用类似于环绕声系统中的中置音箱。在环绕声系统中，70%的声音都是发自中置音箱。
The choice of LCD TV also needs to pay attention to whether the user-friendly design is in line with their own needs. For example, the integration of flat-panel TV appearance and home design has received unprecedented attention, and the appearance can not be ignored. For another example, functions such as active backlight adjustment and wireless headset reception will affect the user experience. In particular, the design of the speaker is particularly important, because not listening well will certainly affect the effect of watching. Compared with the common design of traditional vertical speakers on both sides, horizontal speakers are gradually becoming popular. At present, the 16 ∶ 9 LCD screen is the mainstream of LCD development, which makes the LCD TV extend the length of LCD TV body longitudinally. The design of horizontal LCD TV speaker makes the overall layout of 16 ∶ 9 LCD TV more coordinated. In addition, the horizontal speaker design is conducive to the performance of human voice dialogue and makes people more immersive. Its function is similar to the center speaker in the surround sound system. In the surround sound system, 70% of the sound comes from the center speaker.
10. After sales
Pick after-sales service, mainly to see the LCD screen warranty period. Under normal circumstances, manufacturers provide one-year free warranty for the whole machine and three-year free warranty for other parts. For LCD TV sets that need to be wall mounted, it is recommended that manufacturers be required to install them professionally. According to this year’s new national flat panel TV installation service standard, large manufacturers should be able to provide door-to-door installation service.