What is TN

ByKarrie Madore 2020-01-04 1866

The full name of TN is Twisted Nematic (twisted nematic) panel. Because of its low production cost, TN has become the most widely used entry-level LCD panel, and it is widely used in the mainstream mid-and low-end LCD displays in the market. At present, most of the TN panels we see are improved TN+film,film, that is, compensation film, which is used to make up for the lack of visual angle of the TN panel. At present, the visual angle of the improved TN panel is up to 160 °. Of course, this is the limit measured by the manufacturer when the contrast is 10:1. In fact, the image has been distorted or even discolored when the contrast drops to 100: 1.

As the panel of 6Bit, TN panel can only display 64 colors of red, green and blue, and the maximum actual color is only 262.144. Through "jitter" technology, it can obtain the performance ability of more than 16 million colors, and can only display three primary colors of 0 to 252 gray levels, so the final color display information is 16.2m color, not what we usually call true color 16.7m color. Coupled with the TN panel to improve the contrast is more difficult, the direct exposure of the problem is the thin color, poor restoration ability, the transition is not natural. 

The advantage of TN panel is that the output gray class is less, the deflection speed of liquid crystal molecules is fast, and the response time is easy to be improved. At present, TN panels are basically used in liquid crystal products below 8ms in the market. In addition, Samsung has also developed a B-TN (Best-TN) panel, which is actually an improved version of the TN panel, mainly in order to balance the contradiction that the picture quality must be sacrificed in order to balance the high-speed response of the TN panel. At the same time, the contrast ratio can reach 700 , which is close to the panel of MVA or early PVA. Many panel manufacturers in Taiwan produce TN panels. TN panels belong to soft screens. Similar watermarks will appear when you gently scratch with your hands.  


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