Type liquid crystal panel

1, TN panel

TN full name TwistedNematic ( twisted nematic ) panels, low production costs make 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 16.2M color display color , 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. Many Taiwanese panel manufacturers TN panels , TN panels are soft screen , gently draw will appear similar to the waterlines , another careful look at the screen roughly like this :

2, VA Class panel

VA class high-end lcm module 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. Fujitsu MVA technology (Multi-domainVerticalAlignment, multi-quadrant vertical alignment technology ) can be said is the earliest wide viewing angle LCD panel technology . Such panels can provide greater viewing angles , typically up to 170 °. Through technology licensing , Taiwan Province of China CMO ( Chi Mei Optoelectronics ) , AU Optronics panel companies have adopted this panel technology . Improved class of P-MVA panel nearly horizontal viewing angle of up to 178 °, and 8ms gray response time can reach the following Samsung Samsung Electronics PVA (PatternedVerticalAlignment) technology also belong to the scope of VA technology , which is the successor MVA technology and the developer . Its overall quality has been fully than the latter , and improved the S-PVA and P-MVA can already go hand in hand , to get a very wide viewing angle and faster response time. PVA instead of using the transparent ITO electrode MVA projection of the liquid crystal layer , the transparent electrode can get a better opening rate , to minimize the waste of backlight . This model greatly reduces the Character LCD Modules a " bright spot" of the possibility of the status of the LCD TV era equivalent CRT TV era of the " Long Guan ." Samsung's main push of the PVA mode wide viewing angle technology , due to its strong capacity and stable quality control system, widely used by Japanese and U.S. manufacturers .