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 .
123
2013年11月4日星期一
2013年11月3日星期日
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.
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.
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.
2013年11月2日星期六
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 .
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 .
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 .
2013年11月1日星期五
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 .
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.
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.
订阅：
博文 (Atom)