How many kinds of LCD
Author:Tu YUESHA Time:2021-08-05 10:16 Browse(877)
1) VA panel is the most widely used type of high-end LCD panel. Compared with TN panel, 8bit panel can provide 16.7M color and large viewing angle, which is the capital for this kind of panel to position high-end, but the price is also more expensive than TN panel. VA panel can be divided into MVA panel dominated by Fujitsu and PVA panel developed by Samsung. The relationship between the latter and the former is inheritance and improvement.
Compared with TN panel, 8bit panel can provide 16.7M color and large viewing angle, which is the high-end capital of this kind of panel, But the price is more expensive than that of TN panel.

How many kinds of LCD

VA panel can be divided into Fujitsu led MVA panel and Samsung developed PVA panel.
the relationship between the latter and the former is inheritance and improvement.
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VA panel can be divided into Fujitsu led MVA panel and Samsung developed PVA panel    Fujitsu's MVA Technology (multi domain vertical alignment.
multi quadrant vertical alignment technology) can be said to be the first wide angle liquid crystal panel technology.
this kind of panel can provide a larger viewing angle.
it can usually reach 170 °, The visual angle of the improved VA panel is close to 178 °, And the response time can be less than 20ms.
through technology authorization.
Qimei Electronics (Qijing Optoelectronics), Youda optoelectronics and other panel enterprises in Taiwan Province of China all adopt this panel technology.
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this paper introduces the technology of Qimei Electronics (Qijing Optoelectronics) and Youda optoelectronics        PVA is a panel type exclusively launched by Samsung.
it has been further developed and improved on the basis of Fujitsu MVA panel. It is an image vertical adjustment technology, which directly changes the structure of the liquid crystal cell, greatly improves the display efficiency, and can obtain brightness output and contrast better than MVA, In the early stage, the response time of PVA was 25ms as that of MVA.
last year, Samsung extended an improved S-PVA based on PVA.
the viewing angle can reach 170 degrees. With the pressure chip, the response time of S-PVA has been improved to the gray level, and the contrast is more than 700:1    .
   ( 2) IPS panel: IPS panel.
the biggest advantage is the accuracy of color restoration, so we see IPS panel on almost all professional or quasi professional liquid crystal displays.
the prominent features are large viewing angle, bright color and fine picture.
at present, it is one of the main types of liquid crystal panel used in displays..
the main features of IPS panel are as follows     The IPS panel was first introduced by Hitachi in 2001.
it uses the way of liquid crystal molecules plane switching to improve the viewing angle, and uses the space thickness, friction intensity and the change of transverse electric field driving to make the liquid crystal molecules do the maximum plane rotation angle to increase the viewing angle; There is no need to add additional compensation film in the manufacture of goods.
the display can also achieve high contrast visually.
the angle of view can be improved to 160 degrees.
the response time can be shortened to less than 40ms.
therefore, IPS LCD panel has the advantages of large viewing angle and fine color.
it looks transparent, However, slow response time and difficulty in improving contrast are also fatal disadvantages of this type of panel.
the second generation of IPS panel.
that is, S-IPS panel introduces new technology to improve the gray-scale reversal phenomenon in some specific angles.
the products adopting this type of panel in the market now are: Apple m9177, Mingji FP2092, etc.
in this paper, the design of the second generation of IPS panel is introduced    ( 3) TN panel: the full name of TN panel is twisted nematic panel.
the outstanding features are low cost, fast response speed, and large viewing angle can be obtained by pasting a wide angle compensation film. This type of LCD panel is used in entry-level and mid-range products, with affordable price, and is selected by many manufacturersCompared with the first two types of LCD panel, it is slightly inferior in technical performance, it can not show 16.7M bright color, only can achieve 16.2M color (6bit panel), but the response time is easy to improve.
the viewing angle is also limited to a certain extent.
the viewing angle will not exceed 160 degrees.
now 90% of the LCDs using this kind of panel on the market..
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this paper introduces the design of LCD panel
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