Brightness refers to the brightness of the picture, in cd/m2 or nits, which is usually fully adequate for 1000 nit; the contrast refers to the beauty of the color, which is 300:1 - 600:1。
Now, the liquid crystal panels generally have a visual angle of over 170 degrees, and some new models can be up to 178 degrees. It should be noted that, when viewing side-by-side, attention is paid to whether the picture is clear on the left, left and central screens, whether the brightness varies significantly, and to selecting products where the difference is as small as possible。
Lcd brand
In the case of lcd tv, where there are many brands in the market, the choice of a large brand of lcd panel producer can reassure consumers. Because of their financial resources, these companies have spared no effort in technological development。
The liquid crystal screen is now in three stages: the best quality is the sharp screen, which is largely not available; the second is the screens of japanese and korean manufacturers, such as samsungelectronics and lg philips (lpl); and the last is the screens produced by our taiwanese manufacturers, such as toyoda and chimi. Only the five major plants are currently capable of cutting large-scale liquid crystal panels of 40 inches or more。
Lcd panel "crystal"
For lcd tv, lcd panels are the most critical components. So, we're all going to have to be refined in the selection of the liquid crystal panels。
Panel algebra
The lcd algebra refers to the algebra of its production line, which relates only to the size of the cut panel area, but the specific process changes are minor。
Lcd panel size
The size of lcd television is appropriate for the size of the home area, and the reasonable view distance of television is generally four to five times the size of the television screen (the opposite angle of the screen). For example, the viewing distance in the living room is four metres, and the television screen size is about 37 to 40 inches (1 inch = 2. 54 cm)。
Lcd panel ratio
Based on the ministry of information industry's determination of the draft “digital high-resolution monitors” to be reported, future high-resolution televisions will be based on 16:9 and it is recommended that consumers opt for lcd television as much as possible。
The resolution of the liquid crystal panel
The national high-resolution standard is greater than or equal to 720 lines of clarity both horizontally and vertically, and consumers must pay attention, when selecting purchases, to the commercial propaganda term, usually the image resolution that we see on the screen is “physical resolution”, also called “best resolution”, whereas the so-called “maximum (support) resolution” refers to the highest resolution that television can support, but only the standard of “physical resolution” is met during the screening. Currently, the physical resolution of lcd television produced in the country can almost reach 1024 x 768 and reach a maximum of 1920 x 1080, or 2. 07 million pixels。
Number of colours
The number of colours refers to the number of colours that can be displayed by the monitor, and the higher the indicator, the richer the picture, but the criterion is not absolute. The crt monitor can now basically display 32 bit colours, about 4. 3 billion colours, while the mainstream lcd tv product is 24 bits, with approximately 1. 67 million colours, but it is not lcd tv as bad as crt tv. Lcd tv and crt tv do not work in the same way. In fact, 16 million colours are sufficient to meet the demand for applications, and lcd tv has other, more advanced technology, so the colour of the image is very good。
Hdmi interface
The hdmi interface, which is currently the only digital interface that can transmit both audio and video signals, has the distinct advantage of simplifying connections and reducing the burden of connections; however, when selecting lcd television, the difference in machine prices for which it is available is compared to its added value。
Quality-focused branding
Brands are a guarantee of quality, and powerful producers tend to invest more in technology development, production processes, after-sales services, such as sharp, samsung, lg, philips, sony, toshia, matsuya, and the country’s tcl, chewie, haishin, long rainbow, and conga. The above-mentioned large brands reached a cumulative total of over 80 per cent of lcd tv retail sales in 2006, according to data from the retail monitoring of china-iicon. It should be noted that not foreign brands are necessarily better than domestic brands. In fact, domestic brands of lcd television are now dominant in the market and have higher value for money, and consumers have to choose rationally according to their needs。
Reasons face the temptation of promotion
Day price reductions are already on the rise, but consumers should not just look at the price of the product when they choose to buy lcd tv, as we often say, “one cent at a price”, especially for high-technology products。
The gift is also a sharp instrument for commercial promotion, and at this point it is important to remember the original purpose of selecting television, to remain calm, to find as much reason as possible for the low price of the product or for the abundance of the gift, and to discourage the idea of buying if it cannot be found or if the reason is far-fetched。
At the same time, because of the high maintenance costs of lcd tv and the fact that we have not yet included tablet tv in the “three packages”, consumers are asked about the maintenance service commitments of manufacturers when they select lcd tv, such as the duration of the warranty, the duration of the warranty of the main parts, the condition of the goods being replaced。
