Lcd television is popular because of its low energy consumption and its long lifespan. So lcd tv now occupies a large share of the market, while lcd tv is constantly being updated. Now consumers are faced with the question of whether lcd tv is hard-screened or soft-screened when they choose to buy it, so j. J. Will take stock of the problem today and which one of the plates on lcd tv is good。
What's a hard-screened lcd tv
Hard-screened lcd television is the application of ips hard-screen technology to lcd tv. It is called a hard screen because it has a more robust structure of liquid crystal molecules than a soft screen, optimizes the ranking of liquid crystal molecules, is horizontally organized, and when exposed to external pressure, the molecular structure falls slightly down, but the overall molecule is horizontal, while the vertical array of softscreen liquid crystals falls down and is eight-wordly inverted. So, in the event of external force, the hard-screen liquid crystal molecule structure is much stronger and more stable than a soft screen, does not produce a false and impact image colour, and can protect the image to the greatest extent possible without compromising its effects。
What's a softscreen lcd tv
The soft screen, by definition, is the emergence of the "modeline" when we cross the lcd panel with our hands. The most typical of this technology is samsung s-pva technology, the mva technology of friendda light and sharpasv technology. "soft" "hard" is only used as two different production processes, and soft and hard screen categories are s-lcd and lpl, not production technology standards; in addition, soft screens can provide a larger visual angle, allowing us to have a better visual impact while watching television;
Lcd tv's hard or soft
At the core of lcd tv, the quality of the panel determines more than 60 per cent of the quality of the television, so that some professional monitors, in addition to being fine on the road, are selected on the panel。
Since the va panel has two deviations, the timing of the deflection becomes longer and the amount of deflection is not well controlled, the strength of the electric field determines the number of molecules in favour of the electrodes and also determines the number of molecules in reversal, controlling the brightness of pixels in two respects, but because of two processes, the number of molecules in deflection and reversal is not absolute linear with the electric field, the brightness of its screen is larger than that of the ips panel, and when dynamic images are not carried out at the same time, there are visible drags in the colour-coated area, or strange light fences at the border, due to the fact that the two processes do not have the maximum value at the same time。
The ips panel does not pre-direct liquid crystal molecules into light-through mode, but rather direction into a non-light-out mode, so that the amount of light-through is determined by electrodes vertically in the direction of liquid crystal molecules, the higher the voltage, the more the molecules reverse, and thus the precise control of the light. It controls only one oscillation angle of the ips panel liquid crystals, and the number of deflectors is close to the positive ratio of the voltage, making the layer control of the panel easier to achieve。
When we usually show the difference between ips and va, judging by knocking on the screen, the va panel is often more likely to have color anomalies after being knocked on. This is determined by the difference between the liquid crystal molecules of the two panels, the va panel achieving light penetration through the deflection and reversal of the liquid crystal molecules, and the vertically directed liquid crystal molecules achieving light penetration at the knock-on will be like squeezing of both sides. The horizontally directed ips panel, with a much smaller number of lcd molecules inverting, has less impact on the screen, which is the underlying reason for the wide difference between the two after hitting. Although operational possibilities are relatively low, if differences between the ips panel and the va cannot be detected through the above differences, it is possible to collide the pixel differences in the near panel. The ips panel is organized in v fonts, while the va panel is organized like a fish scavenger and is more closely aligned with pixels, which is the shape of the liquid crystal molecule orientation and electrodes。
Lcd tv selection techniques
1. After-sale services
Although the lcd screens are not prone to problems, they can still be unbearable, with most manufacturers providing warranty services ranging from one to three years, some even providing free door-to-door services and relief for maintenance costs during the warranty period, and these minor details are best made clear prior to selection。
2. Selection of appropriate display dimensions
Because of living conditions, the viewing distance is too large to create a sense of oppression and the price of large-screen lcd television is exceptionally high. So, the average user is still on the scale, and the average 17-inch machine is close to the visual area of the traditional crt 19-inch screen。
Three, bad judgment
The common problem on the lcd screen is “bad points”, although many products call for “no bad points” assurances, the standards for assessing bad points vary from one manufacturer to another, with some providing new services as long as there are bad points, to others that have to be judged according to the assessment criteria set by the operator, how long does it take for the product to have a bad point to be a product defect? These assessment criteria need to be clear so as not to compromise entitlements。
4. Response time
The "response time" is the speed at which the lcd monitor reacts to the input signal, i. E. The time at which the liquid crystal turns from dark to dark. The speed of reaction is only 30 ms, and for watching dvds, the effects will be vexing. So the smaller the response time, the better。
5. Visual angles
From the point of view of users, of course, the larger the angle, the better. But you have to understand the definition of the visual angle, and because everyone has different visions, we take the contrast, and the greater the contrast, the better it is。
6. Contrast
The average entrance screen contrasts more than 300:1 with a medium machine of 450:1 and 500:1 level. If you actually compare the entry-level, high-grade slots with the ability to display high-comparison screens, you can be more visible in the colour gradient, and the colour is more dynamic and rich, after all, depending on the user's needs。
Seven. Not as bright as possible
The lcd screen brightness will have a direct impact on the comfort of viewing the screen, and the brightness of the product is not as bright as it is. After all, buying the screen is not buying a light bulb, and the comfort of watching is the greatest factor! If the screen is too bright, it is equally exhausting for people to look at it too long, and for users who use it often for long periods of time, strong light should be avoided。
8. Screen refreshing frequency
For the crt monitor, the refresh rate is related to the speed at which the image is refreshed. The faster you refresh, the harder it is to blink. And if the refreshing rate is above 75 hz, it is difficult for users to feel the image flashing。
9. Resolution
Whether lcd or crt television is purchased, resolution is the main measure of the monitor. Since monitors must support the resolution required for software and hardware, the resolution supported by traditional crt monitors is more flexible. Whether it is a high resolution or a low resolution, the passivity can be shown without loss of quality。
10. Color
Early colours of the lcd monitor show only high colours in terms of colour expression (256k). So many manufacturers use the so-called frcRame rate control, a simulation of the full picture. In the near future, it has been easy to see a pattern of colour in colour (32 bits) because of technological advances。
What's on lcd tv
1, samsung lcd tv 2, sony lcd tv 3, genevie lcd tv 4, seanet lcd tv 5, sharp lcd tv 6, tcl lcd tv 7, concret lcd tv 8, longbow lcd tv 9, union lcd tv 10, philip lcd tv
