LCD screen which is good

A first look at the quality of LCD monitors its panels because of their direct impact on the quality of the viewing screen , and LCD TV panels accounted for more than half the cost of the machine is the impact on the cost of LCD TVs major factor , so to choose a good LCD monitor, it must first choose the right panel . LCD panel LCD monitors can largely determine the brightness , contrast, color , viewing angle and other very important parameter. LCD panel developed very quickly, from three generations of previous years , the rapid development of the four generations, five , and then skip six generations of seven generations, and the updated plan also among eighth-generation panel .

Manufacturers currently produce LCD panels mainly Samsung , LG-Philips, AUO , etc., because of the differences in each level of technology , production of COG LCD Displaypanel is also divided into different types of models . Common with TN panel , MVA and PVA panels , etc. Class VA , IPS panels and CPA panel .

TN panels

TN all called Twisted Nematic ( twisted nematic ) panels, low production costs so TN has become the most widely used entry-level LCD panel, the current mainstream market low-end LCD monitors are widely used . Currently we see mostly improved TN panel type TN + film, film that compensation film , used to compensate for the lack of viewing angle TN panel , the current improved viewing angle of TN panels have reached 160 °, of course, this is vendor in the case of a 10:1 contrast ratio measured limit , in fact down to 100:1 contrast image has distortion or cast .

As 6Bit panels , TN panels can only display red / green / blue color of 64 , the maximum actual colors only 262.144 kinds , through the " jitter " technology can enable them to make more than 16 million kinds of color performance capabilities, only to be able to display 0 252 grayscale primary colors , so the final number of the resulting information is displayed colors 16.2 M colors, rather than what we usually refer to the true color 16.7M colors ; coupled with TN panel to increase the contrast of the more difficult, the problem is directly exposed color thin, reducing ability, the transition is not natural.

TN panels advantage is less due to the output grayscale series of liquid crystal molecules deflection fast, easy to improve the response time on the market today 8ms LCD products the following basic uses a TN panel . Another Samsung also developed a B-TN (Best-TN) panel , it is actually an improved TN panel , mainly in order to balance the high-speed response TN panel must sacrifice quality of contradictions. While the contrast up to 700:1 , they can already and MVA or PVA panel early phase close.TFT Lcd Modules Many Taiwanese panel manufacturers TN panels , TN panels are soft screen , gently draw will appear similar to the waterlines .

VA class panel

VA class high-end LCD panels are now used more type of panel , belonging wide viewing angle panel . And compared to TN panels , 8bit panel can provide 16.7M colors and large viewing angles are targeting high-end class panel of the capital, but the price is relatively more expensive some of the TN panel . VA panel can be divided into classes led by Fujitsu MVA panel and developed by Samsung PVA panel , where the latter is a continuation and improvement . VA class front of the panel ( front ) highest contrast , but the screen is not good enough uniformity , color drift tends to occur . Sharp text is its trump card , black and white contrast is quite high.