Display a black screen how to solve

We often monitor the forums or other network in the way users see release on the "display a black screen" posts, which relate to the vast majority of mainstream brands currently on the market display products, the model in particular is abundant. So what are the factors which make the LCD screen is blank it?

Solve Step one: now most LCD monitors, especially the large-size LCD monitors are equipped with D-Sub and DVI-D interface, and some models even added more interface types, so when you reconnect LCD monitors, LCD monitors The IC chip is sometimes not automatically recognized signal source. Some users in the use of D-Sub interface, do not restart the operating system, the signal input interface directly replace DVI-D, even though LCD IC circuit have the automatic signal search function of the input source, but sometimes the chip is still in the switch enough "smart", search no input signal, then we need to adjust it manually. When the input signal through the DVI-D interface inputs, while the LCD monitor IC chip will input source selection in D-Sub interface, the screen of course can not reveal any information on the screen, thus showing all black, which is also known a lot of friends as "black." At this point, we press the "Switching input source" button (usually the SOURCE or INPUT button), so that the IC chip re-selection.

Some LCD monitors and no dedicated button to switch the input source, but they will in the OSD menu provide this functionality. When you select the correct input interface, the display will show the normal screen.

Step two solutions: Some users reflect their lcm module monitor does not have a black screen phenomenon, but intermittent black screen, sometimes black high frequency. This problem also has graphics and other host hardware problems, but do not rush to it that the host hardware. First we need to carry out a preliminary assessment of the fault, do not do any checking in the case, the failure is due to the liquid crystal display or other host device. We recommend consumers the best replacement of a normal host SPIDERS display, if the display does not fail, it indicates that the previous host fails; If the monitor still has the above phenomenon, it may be a problem with the display itself.

Solve Step Three: There are some users reflect themselves in the process of playing the game, the LCD display will suddenly appear blank screen. Most of the reasons for this phenomenon, there are two: the first one is referred to in the previous case, graphics and other host hardware part is damaged; Another possibility is the game and the operating system or the graphics card driver produced a conflicts. Although the game program and the operating system, graphics card driver produces relatively small chance, but this is sometimes still occur. Previous detection methods and time are identical, both the first determine whether the malfunction of the graphic lcd display module, and then one by one starting from the host start address.

If the test result is indeed the final LCD problem, then it should go to the respective brand service center for maintenance and inspection.

How to solve the display color is not normal

Display screen compared to other products, the biggest advantage is the color is more accurate, but due to certain factors, the display will appear the phenomenon of color is not normal. Typically there will be three kinds of display color is not normal forms:

1, the display color obvious abnormalities;

2, the color of the display subjective special preference;

3, the graphics card or graphics card driver failure, and software compatibility problems.

Solve Step one: When the display is a color cast, we should first check the connection part of the liquid crystal display, such as D-Sub, DVI, or other data signal line and the display interface or an interface card is securely attached, because most of the screen bias color problems are caused by loose connections or poor contact caused.Coding System lcd module We suggest that you connect the signal on the transmission line screws.

Solve Step Two: If it is not the connection problem, we recommend everyone in the system menu of the "Color" option, see "warm", "normal", "cool", "user-defined" This four common options to see whether we choose not to correct color options. For most ordinary users, use the default "normal" mode is sufficient. If the change is more complex, the user can select the system menu "Restore Defaults (restore factory settings)" option, restore the factory settings to the monitor.

Solve Step Three: If the first two parts are completely normal, we conducted the third step of checking: Check whether the video card or driver issue. This process is also very simple: the host computer is connected to a normal display, or connect the monitor to another normal host, to see if it still will be cast. If the issue is resolved, indicating that the host computer graphics card or driver's fault; if not resolved, indicating a liquid crystal display their own problems.

If the fault monitor itself, TFT LCD Displays so basically belongs to the internal circuitry chip failure problems, then we suggest that you should be sent to monitor the official brand service center for repair detection.

Frame interpolation technology popular

As early as 2006, because LCD exist response time tailing phenomenon, so a lot of manufacturers in order to solve this problem through the IC chip from the start, launched a number of solutions. BenQ launched the beginning of the "plug black" technology, followed by other manufacturers also used a similar technique, although the names and details are different, but the basic principle roughly.

The beginning display manufacturers adopted Over Driving technology

In fact as early as BenQ "plug black" before the display manufacturers to use Over Driving technology, which is the principle of forcible IC chip to increase the voltage across the liquid crystal panel to accelerate the deflection of the liquid crystal molecules, which play a role in reducing the response time, However, this approach does not fundamentally eliminate tailing phenomenon, but rather due to improper control pressure produce similar white blur, and many other side effects, so the technology did not able to get a good promotion and application.

BenQ monitors used "plug black" technology

BenQ's "plug black" low temperature lcd display technology will solve dynamic picture while producing ghosting problem, to achieve this objective should take two steps, the first step is to reduce the gray response time, the second step is to eliminate the steady-state display Smooth edges of ways. Use the two screens inserted between the way black screen, will effectively solve the smear effect.

Because the LCD display of the steady-state mode (display elements, such as backlight source is always displayed after opening at a certain level, unless you turn off, during which the change because the screen does not change), while the human eye in Look dynamic picture of the brain signals are transmitted automatically do the integral luminance conditions, so even if the response time of liquid crystal displays 0ms, will still see the blur, so "black plug" technology to simulate a CRT monitor pulse display, so that you can effectively solve the afterimage phenomenon.

Now insert the calculated display manufacturers to use the form of frames

However, not every image is made of black pixels as the main display, so just insert only the black frame is clearly not enough, so now many monitors and television manufacturers calculation frame frames inserted, namely IC chip based on two picture to calculate an element, allowed to have a better transition, and its principles and objectives and about "black plug" technique similar to, but different from the inserted frames. According to the actual needs of the user can see the different parameters on the lcd graphic display manufacturers fixed the case can also post an IC chip technology for different tuning and improvement to meet user demand for more.

How to enhance the effect of IC circuit

LCD monitors have been listed for nearly 10 years, it has completely replaced the traditional CRT monitors become the absolute mainstream of the market, we hereby ZOL monitor channel also launched a "basic display Hundred Questions" series of topics, from the subtle technical point of view as we opened one of these displays basic knowledge of secrets. We know that the color monitor LCD panel is to determine the effect of the main factors, while others will need to rely on the IC circuit part, in addition to controlling the accuracy of color reproduction, the manufacturers but also for everyday consumer use of adding a new feature, what are the main aspects of the function it?

Note: This series of topics for readers are new to the display, or want to learn the basics of the user display, if you think you have fully mastered monitor all kinds of knowledge, you can skip this confidence.

In the previous article, we have introduced the color LCD panel displays that affect performance results of the key factors, in addition to the display of the IC circuit is also a very important part, its main job is to "guide" LCD panel accurately show a variety of colors, in addition to the monitor according to the actual needs of manufacturers have joined the many new features.

● Dynamic Contrast technology

Dynamic Contrast is the first to come into contact with us through the IC circuit to control one of the technologies. For the lcd module, its response time and native contrast ratio is fixed, while the principle of dynamic contrast ratio is the IC chip will detect the contents of the screen, if the screen when it is found that most of the image is black, it will automatically issue a directive Let reduce backlight brightness, so that you can greatly reduce the brightness of the screen at this time, at maximum brightness remain unchanged at this time raised to 10,000:1 contrast ratio than we normally would this ratio is called "Dynamic Contrast" . The use of LED backlighting, the dynamic contrast ratio can reach 10 million: 1 or more.

With the popularity of LED backlight technology, the market dynamic contrast ratio LCD display once again been greatly improved from the previous 10,000:1 quickly raised to 100,000: 1 or even 10 million: 1. Dynamic contrast ratio enhancement can effectively increase the screen layering, and can slow down the display in all black screen light leakage, so consumers have the role of improving quality.

But when Dynamic Contrast is not necessarily the value the higher the better, when its value has reached a certain level, the improvement of its screen is no longer as 1000:1 to 10000:1 so obvious, so its value has continued to increase in significance not, so now despite the dynamic display manufacturers introduced a contrast ratio of up 100 million: graphic lcd display module 1 models, but did not apply this feature as the biggest selling point to publicity.

TV light leakage

What is the light leakage ? A: The light leakage is due to structural characteristics caused by the LCD screen itself , to a certain extent is a normal phenomenon , light leakage does not affect the brightness of the TV itself , response time, life and other basic technical parameters .

National digital television receiving equipment and performance standards of the working group pointed out that Liu Quanen : Due to the different levels of the LCD screen , at different levels of light leakage , color lcd display module January 1, 2007 from the implementation of the "digital TV LCD universal norms" clearly defined, LCD TV in all black case leaked to ≤ 4cd / ㎡ standard .


We usually through red, green, blue three basic TV color TV technology to measure the parameters of the situation , based on the particularity of LCD TVs , the purchase should be from the red , green, blue , white, black 5 colors to examine the quality of the product , so that in addition to the basic parameters can understand the situation , but also to avoid you purchased the product have dead pixels, bright, dark , light leakage and other unnecessary trouble.


LCD screen light leakage disadvantages of LCD technology itself , there is no effective solution . Current relevant legislation is still very lag , temporarily unable to carry out effective LCD leaked specifications ---- because of leaked liquid crystal display also can be seen. Also, light leakage does not affect the life of LCD monitors , color, etc.TFT Display Module  Technical parameters display itself , but in black or dark scenes will bring viewers uncomfortable feeling, so difficult to have a standard to measure how much light leakage will disrupt the viewing.

How to maintain the flat-panel LCD TVs

Today LCD TVs have entered the household, consumers use the process will inevitably encounter various problems, I 'll introduce a few LCD TVs maintenance of common sense .

First : readily off the TV can not be too diligent . This is not so that we waste energy, but to pay attention to weigh the power is turned on the TV Life. As we all know , the backlight for the LCD TV consumes all accessories in life the most serious one part , it and our home use fluorescent tubes are very similar . So, it 's life and times also ignite a great relationship . Start when the warm-up and high-voltage pulse sputtering cathode electron substance increases, shorten lamp life.

If you develop a habit of readily turn off the TV , four times a day to open computing , lamp life will be reduced to the original 1 /2.

Second: Avoid prolonged work . In the case of ultra-long work , the heat in the LCD TV accumulating inside the body , which is not enough for the other electronic components as much of a threat , but it is possible to burn the liquid crystal panel , thereby forming a large area of ​​dead pixels .

Third : Clean way to pay attention , Lcd display module you should use a dry cloth. Due to static reasons, LCD TV screen surface is easily contaminated with dust , but clean water is a very unwise way to clean. First, the general effect is clean , and easy to leave water marks . More importantly, the LCD is very easy to cause permanent damage due to damp , if water droplets penetrate the screen , should not energized , to make water in a warm environment slowly evaporate.

Fourth: Avoid scratches, twisted or hit the surface of the LCD screen . Useful for many people pointing fingers on the screen habits, which is the traditional television is irrelevant, but the LCD TV may cause fatal damage , but see themselves and their children and their toys , the LCD screen will bring any impact direct damage, and most likely to make entire screen scrapped.

Fifth: still images can also damage the LCD screen. At present, many LCD TVs with digital photo browsing, but for a long time for a picture display may cause damage to the LCD screen .

Do not use the machine in a long time ,OLED Display Module best to turn off the machine . The screen will display a long fragile components to aging , which may or may not burn the TV screen , but it may make the TV appear more dead pixels. Only bad point is always a white or black pixels, can not be repaired . To address this problem, some products specially set up display a still picture for too long, the TV automatically dimming feature to protect the LCD screen .

The liquid crystal display according to common physical structure divided into four

Enjoying every day that distinctive high -grade LCD display at the same time , do not forget the maintenance of this vital link. LCD only well maintained , only long-term trouble-free service for users . If you already have a LCD or flat panel displays, here's some very useful tips on you , and I will be following some of their own use and maintenance of the LCD monitor experience out and share with you .

Common LCD monitors according to the physical structure is divided into four categories:

① twisted nematic ( abbreviated TN, full TwistedNematic, mainly used in areas such as game consoles LCD screen ) ;

② super twisted nematic ( referred to STN, full SuperTN, the current multi- phone LCD screen is used ) ;

③ double super twisted nematic (DSTN, full DualScanTortuosityNomograph, early laptop computers and mobile phones and other digital devices currently used Jieyou ) ;

④ type thin film transistor (TFT, full ThinFilmTransistor, currently the mainstream ) .

TN LCD screen LCD screen is the originator of all kinds , and its technical principle is the cornerstone of the future development of the lcd modules screen . TN liquid crystal display comprises two layers of glass substrate , ITO film, with the film, a polarizing plate , etc. made of plywood , the upper and lower sandwich the liquid crystal molecules in the liquid crystal molecules near the upper interlayer according to the direction of the groove arranged in the upper part and the lower sandwich the liquid crystal molecules are arranged according to the direction of the groove bottom , the overall look , the liquid crystal molecules are arranged as a spiral twist .

Once the liquid crystal molecules through the electrode power , TN liquid crystal will become erect state, and sandwich the liquid crystal display of the two polarizing plates attached , these two polarizing plates arranged up and down and the transparent interlayer groove angle and the same arrangement in normal circumstances, the light irradiated from the top down , usually only one angle of light can penetrate down .

Imported by the upper polarizing plate laminated on the groove , and through the arrangement of the liquid crystal molecules twist polarizer from the piercing path , light penetration to form a complete way . When the liquid crystal molecules upright light can not pass , the result appears on the display black. This will form when the white light is not light when black , the picture can be displayed on the screen.

The current mainstream of a TFT type liquid crystal display components more complex , it is mainly a fluorescent tube , a light guide plate , a polarizing plate , filter plate , a glass substrate , with the film, the liquid crystal material , thin film transistors , etc. composition. TFT LCD Display with backlight fluorescent tube, the light will pass through a polarizer and then through the LCD , then the arrangement of liquid crystal molecules will change the angle of penetration of the liquid crystal light , then these rays must also pass in front of the color filter polarizer film with another one . And as long as changing the voltage applied to the liquid crystal can control the value of the last occurrence of light intensity and color , so you can change the LCD panel with different shades of color combinations.

LCD TVs summer maintenance tips

Nowadays LCD TV has been leading the entire television industry , fully into the household. What followed was a lot of LCD TVs often have some of the details in peacetime use and do not pay attention to the life cycle of maintenance led to the sharp drop , and easily lead to a large number of small problems . Current knowledge of the 'll introduce a few lcd module TVs maintenance tips to help you extend the life of the LCD TV .

First, do not turn off the TV is not readily let everyone waste of energy , but to pay attention to weigh the power is turned on the TV Life. Backlight LCD TV is the life of all parts consume the most serious one part , it and our home use fluorescent tubes are very similar . Life and times also ignited a great relationship . Start when preheating and high pulse sputtering cathode electron substance increases, will shorten the life of the backlight . If you develop a habit of readily turn off the TV , four times a day to open computing , backlight lamp life will be reduced to the original 1 /2.

Second, avoid prolonged work . This one is not with the above considerations conflict . In the case of ultra-long work , the heat in the LCD TV accumulating inside the body , which is not enough for the other electronic components as much of a threat , but the liquid crystal panel is likely to burn , and thus the formation of large areas of dead pixels .

Third, avoid cleaning the screen when energized . Wipe the water itself is a very unwise way to clean. General effect not only clean , but also easy to leave water marks , it is important that the LCD is very easy because of damp cause permanent damage ( If water droplets penetrate the screen , to let moisture in a warm environment slowly evaporate ) .

Fourth, avoid scratches , twisted or hit the surface of the LCD screen . Useful finger pointing to the screen on the LCD TV habit may cause fatal damage , but see themselves and their children and their toys , any impact on the mini lcd module screen , scribing will bring direct damage, and most likely make entire screen scrapped.

Resistive touch parsing and Comments

Resistive touch screen to control the use of pressure-sensitive touch screen . The main part of the resistive touch screen with a display surface is very thin with a resistance screen, which is a multilayer composite film , it is a layer of glass or hard plastic plate is used as grass , the surface is coated with a layer of transparent metal oxide ( transparent conducting resistance) conductive layer , above the outer surface and then covered with a layer of hardened , smooth anti-friction plastic layer , its inner surface is also coated with a coating , among them many of the small (less than 1/1000 inch) transparent isolated point of the two conductive layers separated by insulation. When a finger touches the screen, two conductive layers in the touch point position will have a contact resistance changes in the X and Y directions generated signal is then sent to the touch screen controller. Controller to detect and calculate the contact (X, Y) position , then according to the simulation of a mouse operation. This is the resistive touch screen technology of the basic principles . So resistive touchscreen available hard object manipulation . Resistive type touch screen technology is the key material , commonly used transparent conductive coating materials are:

ITO, indium oxide , a weak conductor , the characteristic is reduced when the thickness is 1800 Angstroms (Å = 10-10 m ) or less will suddenly become transparent , light transmittance was 80% , and then go on thin but decreased transmittance , time and up to 300 angstroms thickness to 80% . All ITO resistive and capacitive touch screen technology touch screen technology are used in the main material , in fact, resistive and capacitive touch screen technology is the ITO-coated face .

Nickel-gold coating , five -wire resistive touch screen of the outer conductive layer using good ductility nickel deposit coating materials , cell phone touch screen

Outer conductive layer due to frequent touch, use good ductility nickel deposit materials in order to extend the service life , but the technology costs more expensive . Nickel-gold conductive layer scalability is good, but only for transparent conductors, is not suitable as a resistive touch screen face, because it is high conductivity, and the metal is very difficult to achieve a uniform thickness , suitable for voltage distribution layer , only as a probe layer .

1 , four -wire resistive screen four -wire resistive analog technology work two transparent metal layers increases 5V constant voltage on each floor : a vertical direction and a horizontal direction . Total need four cables. Features: High -resolution , high-speed response. Surface hardness treatment, reduce abrasion, scratch and anti- chemical treatment. With glossy and matte . Time correction, high stability , and never drift.

Two , five -wire resistive screen five -wire resistive touch screen technology of the two primary directions of the voltage field through a precision resistor networks are added to the glass conductive work surface, we can simply be understood as sharing in both directions of the voltage field work plus in the same work surface , and the outer conductive layer of nickel-gold is only used as a pure conductor only , after a touch detection time- point of the inner ITO contacts X and Y- axis voltage value is measured as the position of the touch point . Five -wire resistive touch screen ITO need four wire inner and outer conductors only for just one , Graphic LCD Display the touch screen may Lead Total 5 . Features: High -resolution , high-speed transmission response. High surface hardness, reduce abrasion, scratch and anti- chemical treatment. 30 million times the same point contact can still be used. Conductive glass as the substrate media. Time correction, high stability , and never drift. Five -wire resistive touch screen with high-priced and high environmental requirements shortcomings.

3 , resistance screen limitations either four -wire resistive touch screen or five -wire resistive touch screen , they are kind of the outside world completely isolated working environment, 15-inch Industrial Touch Monitor ( touch screen applications ) are not afraid of dust and water vapor , it can be used any object to touch , can be used to draw and write , more suitable for industrial control and office limited use . Resistive touch screen is a common drawback is that because the outer layer of the composite film with plastic material , people do not know or use too much force may scratch the whole touch sharp touch screen scrapped as a result lcd graphic display. However, within limits , only scratch injured outside the conductive layer, the outer layer of conductive scratch for five -wire resistive touch screen is not related , while the four -wire resistive touch screen is fatal .

Three kinds of panel which is good

The type of relationship between the liquid crystal panel response time of the liquid crystal display , color, viewing angle , contrast, these important factors . LCD panel also occupies an LCD monitor costs about 70%. The other is the cost of the drive circuit and appearance . Therefore, the quality of the LCD panel LCD monitor plays a decisive role .

Different positioning of the display division level view, the liquid crystal panel also has a different type of division . Today I will tell you about the market now more common of the three panels are TN panels , IPS panels , VA panels. Monitor the outside hobbies here is not fine table , mainly for these three types of panels for a detailed description .

Section 2 TN panel features resolution

TN panel features resolution

TN panels all called Twisted Nematic ( twisted nematic ) panels, due to low prices , mainly for entry-level and midrange LCD , TN panels deflect the liquid crystal molecules are characterized by fast, so easy to improve the response time . But it is not as good as the performance of color -based IPS and VA -type panels. TN panels are soft screen , gently draw will appear similar to the waterlines . Currently viewing angle because the lack of this type of panel display is gradually out of the mainstream market.
Viewing angle Contrast

Here the author from the TN panel look at the advantages and disadvantages detailed explanation . lcd modules TN panel has the advantage of less output grayscale series of liquid crystal molecules deflection fast, easy to improve the response time on the market today 6ms LCD products the following basic uses a TN panel . With the continuous improvement of TN panels , the latest TN panel monitors are no longer as high-speed response at the expense of picture quality, picture quality has been with a simplified version of the monitor with wide viewing angle panel close. Price compared to wide viewing angle panel also has a big gap.

TN panels drawback is as a native 6Bit panels , TN panels can only display red / green / blue color of 64 , the maximum actual colors only 262.144 kinds , and through dithering algorithm , you can let it reach 16.7M colors (8bit color ) but after all, worked out through the IC circuit and natural colors in terms of accuracy and can not be compared to a native , and wide viewing angle panels with native 8bit color , so the transition is better. Plus TN panel to increase the contrast more difficult, the problem is directly exposed color thin , restore poor .

Section 3 IPS panel features resolution

IPS panel features resolution

IPS panels greatest feature is its poles are in the same plane , unlike other LCD models in the upper and lower sides of the electrode , three-dimensional arrangement . OLED Display Since the electrode on the same plane , no matter what state the liquid crystal molecules are always parallel to the screen , the aperture ratio will decrease , reducing the transmission rate , the IPS used in LCD TV with a backlight will need more .

Choice LCD OR Plasma

For a no contact with friends, flat-panel TVs , flat-panel TV before buying also typically have such a question: " in the end is to buy a LCD TV or Plasma TV? " From now on, LCD TVs and Plasma TVs are flat television pillar products , both have their own strengths , compete with each other ,Character LCD Display and have their own space for development, especially with the gradual popular 3D TV , the two will become more competitive .

Of course, from a technical point of view , there are still some differences between the two . Such as LCD high-definition television images , thinner body , look more stylish appearance ; plasma in brightness, color , layering , and so has certain advantages. In LCD and plasma performance synchronous upgrade stage, we still have to choose according to their needs , after all, is the best fit . If you're a hardcore enthusiast sporting events , or to vote for a big plate plasma care of yourself aesthetic movement concept, but also pay attention to their energy consumption , after all, is the long-term energy-saving benefits, proposals must be purchasing energy-efficient plasma . If the pursuit of fashion and aesthetic quality , Serial Lcd Display Module it can be in a number of liquid crystal boutique in carefully selected .

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.