Compared with the bipolar transistor is generally believed that the MOS conduction current is not required , as long as the GS voltage is higher than a certain value , it. This is very easy to do , but we also need to speed.
Can be seen in the structure of the MOS transistor , parasitic capacitance between the GS, GD, and the driving MOS transistor , in fact, is to charge and discharge the capacitor .Tsingtek TFT LCD
Displays Charging the capacitor requires a current because the capacitor to charge the capacitor can be instantly seen as a short circuit, so the instantaneous current will be relatively large . Select / design MOS tube drive the first to note is to provide instantaneous short circuit current size.
Note that the second , NMOS commonly used in high-side driver , need to be turned on when the gate voltage is greater than the source voltage. The high-side driver MOS transistor is turned on when the source voltage and the drain voltage (VCC) the same , so when the gate voltage than VCC big 4V or 10V. If the same system , to get larger than the VCC voltage , the boost circuit is necessary to specifically . Many motor drives are integrated charge pump, it should be noted that the choice of suitable external capacitor to get enough of the short-circuit current to drive the MOS transistor .
Said above 4V and 10V is a common turn-on voltage MOS tube , of course, need to have a certain margin design. And the higher the voltage , the faster conduction , conduction resistance is smaller. Now there are smaller turn-on voltage MOS works in different areas , but in 12V automotive electronic systems, general 4V conduction suffice.
MOS tube drive circuit and loss , you can refer to Microchip 's AN799MatchingMOSFETDriverstoMOSFETs. About it in detail ,
MOS tube application circuit
MOS transistor is the most significant characteristic of a good switching characteristic Tsingtek lcd display
2x16, which is widely used in the electronic switching circuit needed , such as switching power supplies and the common drive motor , there are lighting dimming .
color lcd display module
color lcd display module
2014年1月20日星期一
2013年12月5日星期四
Some advantages of commercial LCD display
There are a lot of users do not understand, commercial and civilian display screen exactly what is the difference? Today, the difference between a simple presentation on screen between commercial and residential, hoping to help netizens.
1, clarity
Common display devices support only a few TV common resolution specified in the instructions. Because the resolution is only a few civilian television signals, television LCD screen resolution as long as several civilian users based on common use was more effective treatment, a special resolution will result in the video. Commercial display with intuitive features to reflect the image quality, combined with full 1920 x 1080 resolution display for the field of radio and television equipment selection, the LCD screen is the preferred choice of professional display resolution is automatically adjusted according to the display resolution output rate (regardless if they had to support); its high reliability and high-definition display capabilities will ensure that you can record high-definition video edited, the video signal is displayed in the viewer a complete front.
2, stability
Commercial display products usually require 24 hours non-stop operation to meet the needs of a variety of information display, and a display device using the environment than the civilian environment is much worse, the performance of the product which made a higher demand.
And compared to the ordinary display devices, the design, the current commercial display, power, temperature and resistance to electrical interference, capacity and electric shocks margin and the average time between failures are much larger than the former. In the selection of components, various components of the voltage characteristics, current, temperature, humidity and other providers must use significantly higher than TV components; commercial display must also use fully shielded metal case ensure electromagnetic compatibility and interference.
Normal aging display device manufacturing machine in the pipeline is usually energized about 8 hours at room temperature, and the aging machine supplier obvious need in the high temperature and humidity in a closed environment of aging pipeline aging electricity for more than 24 hours to ensure the machine stability. On installation, commissioning, especially components and the aging process requirements, business requirements are significantly higher.
3, Panel
Although commercial and civilian display TFT LCD panels are used, but there is a big difference between them. The biggest difference between them mainly in the size of the liquid crystal molecules, image processing and color, brightness and contrast, viewing angle and so on.
Ordinary LCD display is more important to performance of the entire screen, a small part of the request is not very demanding, more important is the use of a liquid crystal can reduce the cost of macromolecules. Liquid crystal molecules than ordinary LCD panel 256x64 oled display screen to big business, because commercial display when viewing distance is generally not more than one meter, the most important thing is to show the details of the liquid crystal molecules are smaller, Of course, this panel cost is more expensive.
4, the interface
Of course, there are many common display devices also have a RS-232 control port, but its use is basically just used to control lighting, etc., and can not be achieved in industrial control. Because the feeder demand, commercial displays general use industrial port, such as the color RGBBNC with interface and professional video interface DVI-D self-locking mechanism and so on. In addition, suppliers can be significant S232 serial control, password control and open up to more than 200, to adapt to a variety of industrial environments. Easy to use multi-display, not by remote control can control all display devices, and be able to assist, boot time, delay boot, self-test machines and other industrial requirements.
With the continuous development of display technology, in addition to civil, many display manufacturers have launched a commercial display products, these products are mainly used in many public display areas like subways, airports, shopping malls, etc., used to display a variety of real-time Information for people's daily life provides a great convenience. TFT LCD Displays has become a modern society, people work and live essential equipment.
1, clarity
Common display devices support only a few TV common resolution specified in the instructions. Because the resolution is only a few civilian television signals, television LCD screen resolution as long as several civilian users based on common use was more effective treatment, a special resolution will result in the video. Commercial display with intuitive features to reflect the image quality, combined with full 1920 x 1080 resolution display for the field of radio and television equipment selection, the LCD screen is the preferred choice of professional display resolution is automatically adjusted according to the display resolution output rate (regardless if they had to support); its high reliability and high-definition display capabilities will ensure that you can record high-definition video edited, the video signal is displayed in the viewer a complete front.
2, stability
Commercial display products usually require 24 hours non-stop operation to meet the needs of a variety of information display, and a display device using the environment than the civilian environment is much worse, the performance of the product which made a higher demand.
And compared to the ordinary display devices, the design, the current commercial display, power, temperature and resistance to electrical interference, capacity and electric shocks margin and the average time between failures are much larger than the former. In the selection of components, various components of the voltage characteristics, current, temperature, humidity and other providers must use significantly higher than TV components; commercial display must also use fully shielded metal case ensure electromagnetic compatibility and interference.
Normal aging display device manufacturing machine in the pipeline is usually energized about 8 hours at room temperature, and the aging machine supplier obvious need in the high temperature and humidity in a closed environment of aging pipeline aging electricity for more than 24 hours to ensure the machine stability. On installation, commissioning, especially components and the aging process requirements, business requirements are significantly higher.
3, Panel
Although commercial and civilian display TFT LCD panels are used, but there is a big difference between them. The biggest difference between them mainly in the size of the liquid crystal molecules, image processing and color, brightness and contrast, viewing angle and so on.
Ordinary LCD display is more important to performance of the entire screen, a small part of the request is not very demanding, more important is the use of a liquid crystal can reduce the cost of macromolecules. Liquid crystal molecules than ordinary LCD panel 256x64 oled display screen to big business, because commercial display when viewing distance is generally not more than one meter, the most important thing is to show the details of the liquid crystal molecules are smaller, Of course, this panel cost is more expensive.
4, the interface
Of course, there are many common display devices also have a RS-232 control port, but its use is basically just used to control lighting, etc., and can not be achieved in industrial control. Because the feeder demand, commercial displays general use industrial port, such as the color RGBBNC with interface and professional video interface DVI-D self-locking mechanism and so on. In addition, suppliers can be significant S232 serial control, password control and open up to more than 200, to adapt to a variety of industrial environments. Easy to use multi-display, not by remote control can control all display devices, and be able to assist, boot time, delay boot, self-test machines and other industrial requirements.
With the continuous development of display technology, in addition to civil, many display manufacturers have launched a commercial display products, these products are mainly used in many public display areas like subways, airports, shopping malls, etc., used to display a variety of real-time Information for people's daily life provides a great convenience. TFT LCD Displays has become a modern society, people work and live essential equipment.
2013年11月6日星期三
Plasma maintenance Cheats
With the current plasma TV technology updates, and more friends to buy a plasma TV, especially like to see blockbusters and friends to play the game even more keen on plasma TVs, lcd module plasma TVs this is because the technical advantage. Here I explore with you when maintenance Plasma TV will pay attention to.
1 Remember to avoid the heat, tide, dust
High-power plasma TV is well known, so we must ensure that its cooling effect, or if improper cooling on plasma screens will cause fatal injuries, and even burned. When the TV is turned on items not covered in the machine, and pay attention to ventilation. Resting period of time to pay attention to every clean dirt, dust and static electricity to prevent this "invisible killer", and to pay attention to moisture.
2 Avoid long-term fixed image
Early plasma products in a long time after use prone to the phenomenon of localized scorch the screen, so the screen long stay in a screen, just like people do not quite work and no rest in each state of the plasma chamber shine long the same circumstances, the screen will stay on the screen like a shadow lingering. So be sure not to let the long-term plasma TV on the same screen freeze, to avoid such irreparable damage.
3 Wipe the screen to be careful
On the screen by the electrostatic attraction of dust is inevitable, we often want to clean the screen. But did you know that if improper cleaning can also cause damage to the screen, and then to the quality of the effects regret. First, wipe the screen not too often, and the best special screen cleaning material or soft cotton cloth. Also, lcm module do not use chemicals to clean, otherwise it will damage the screen surface is used to enhance the effect of the oxide protective film screen. Water is not very good cleaners, because it will leave water marks on the screen. It is preferable to use a plasma screen cleaner.
4 Remove TV technician to please
If you need to remove plasma TV, be sure not to do it yourself. Because you do not know what parts more critical components, damage to yourself once a key component will cause TV Mishap, so then may outweigh the need to replace parts. And with the high-voltage plasma screen is, and very easy to dismantle an electric shock, this is closely related to life events. Refrain from reckless act.
1 Remember to avoid the heat, tide, dust
High-power plasma TV is well known, so we must ensure that its cooling effect, or if improper cooling on plasma screens will cause fatal injuries, and even burned. When the TV is turned on items not covered in the machine, and pay attention to ventilation. Resting period of time to pay attention to every clean dirt, dust and static electricity to prevent this "invisible killer", and to pay attention to moisture.
2 Avoid long-term fixed image
Early plasma products in a long time after use prone to the phenomenon of localized scorch the screen, so the screen long stay in a screen, just like people do not quite work and no rest in each state of the plasma chamber shine long the same circumstances, the screen will stay on the screen like a shadow lingering. So be sure not to let the long-term plasma TV on the same screen freeze, to avoid such irreparable damage.
3 Wipe the screen to be careful
On the screen by the electrostatic attraction of dust is inevitable, we often want to clean the screen. But did you know that if improper cleaning can also cause damage to the screen, and then to the quality of the effects regret. First, wipe the screen not too often, and the best special screen cleaning material or soft cotton cloth. Also, lcm module do not use chemicals to clean, otherwise it will damage the screen surface is used to enhance the effect of the oxide protective film screen. Water is not very good cleaners, because it will leave water marks on the screen. It is preferable to use a plasma screen cleaner.
4 Remove TV technician to please
If you need to remove plasma TV, be sure not to do it yourself. Because you do not know what parts more critical components, damage to yourself once a key component will cause TV Mishap, so then may outweigh the need to replace parts. And with the high-voltage plasma screen is, and very easy to dismantle an electric shock, this is closely related to life events. Refrain from reckless act.
2013年11月1日星期五
LCD splicing screen features
1 , high brightness
LCD screen with TV and PC compared , DID LCD splicing screen has a higher brightness. TFT LCD Displays TV or PC screen brightness generally only 250 ~ 300cd/m2, while DID LCD screen brightness can reach more than 700cd/m2 .
2 , High Contrast
DID LCD splicing screen has a 1200:1 , even up to 10,000:1 contrast ratio, than conventional LCD PC or TV to more than double the normal projection of three.
3 , better color saturation
Ordinary CRT color saturation of only 50 %, while DIDLCD can reach 80% -92 % of the high color saturation , which benefited from professional development products for the DID color calibration technology , through this technology, in addition to still images color calibration, but also on the dynamic screen color calibration , so as to ensure accurate and stable image output .
4 , a wider viewing angle
PVA (PatternedVerticalAlignment) technology that is " vertical image adjustment technology" , the use of this technology, viewing angles up to dual 180 ° ( horizontal and vertical )OLED Module .
5 , better reliability
Ordinary LCD TVs , PC monitors design, does not support the night of continuous use , DID LCD screen for monitoring center, exhibition center designed to support 7x24 hours of continuous use .
6, pure flat panel display
LCD flat panel display equipment , is truly flat screen monitors , no curvature at the big picture , no distortion.
7 , slim narrow design
DID have a large product display area at the same time , there are thin , light weight advantages , easy to splice and installation. Splicing dedicated LCD screen, narrow its excellent design , making it the edge even in a single centimeter or less, such a small edge effect will not affect the overall display screen .
LCD screen with TV and PC compared , DID LCD splicing screen has a higher brightness. TFT LCD Displays TV or PC screen brightness generally only 250 ~ 300cd/m2, while DID LCD screen brightness can reach more than 700cd/m2 .
2 , High Contrast
DID LCD splicing screen has a 1200:1 , even up to 10,000:1 contrast ratio, than conventional LCD PC or TV to more than double the normal projection of three.
3 , better color saturation
Ordinary CRT color saturation of only 50 %, while DIDLCD can reach 80% -92 % of the high color saturation , which benefited from professional development products for the DID color calibration technology , through this technology, in addition to still images color calibration, but also on the dynamic screen color calibration , so as to ensure accurate and stable image output .
4 , a wider viewing angle
PVA (PatternedVerticalAlignment) technology that is " vertical image adjustment technology" , the use of this technology, viewing angles up to dual 180 ° ( horizontal and vertical )OLED Module .
5 , better reliability
Ordinary LCD TVs , PC monitors design, does not support the night of continuous use , DID LCD screen for monitoring center, exhibition center designed to support 7x24 hours of continuous use .
6, pure flat panel display
LCD flat panel display equipment , is truly flat screen monitors , no curvature at the big picture , no distortion.
7 , slim narrow design
DID have a large product display area at the same time , there are thin , light weight advantages , easy to splice and installation. Splicing dedicated LCD screen, narrow its excellent design , making it the edge even in a single centimeter or less, such a small edge effect will not affect the overall display screen .
2013年10月23日星期三
Chargers and common mode noise
Capacitive touch screen devices is a major problem is that the charger emits high-frequency noise intensity touch performance will decline. Some mobile devices plugged into the charger only provide limited touch capabilities, or connect the charger does not apply when the device can not use the charger display information, in order to cope with high noise charger issue. The best solution to say it is not perfect.graphic lcd
display module A quick look online forums and message boards related information, we can find a touchscreen device by charger noise problem is widespread and has made some consumers feel a headache.
Just as a standard USB charging interface rapid promotion in mobile devices, which also spawned a large number of low-cost aftermarket option market charger. Many chargers are more concerned about cost issues, without attention to performance, these chargers using inexpensive components, or the lack of common-mode noise can help reduce specific components.
The power and ground supply voltage with respect to ground voltage fluctuation, but between maintaining the same pressure, it will form a common mode noise. Such fluctuations only in the ground-coupled fingers touch screen that can affect the performance of the touch screen. Finger pressed with the same electric potential, mobile power and ground relative to its volatility will lead to noise injected by a finger touch screen. The amount of charge injected depends on the peak-to-peak voltage of noise.
In addition, the amount of the charge transport is also affected by two factors significantly affect: the fingers and the contact area between the touch screen and the touch screen overlay thickness of the lens.
The higher the capacitance, means injection of the touch screen, the greater the noise. In this case, the capacitance of a parallel plate is formed on one side by the finger contact area, the other side of the reception by the touch screen sensor electrode. First, TFT Display Module with the finger in contact with the touch screen area increases, the capacitance also increases accordingly proportional. However, since the receiving electrode from extremely narrow row or column form, the actual function of the diameter of the fingers.
Just as a standard USB charging interface rapid promotion in mobile devices, which also spawned a large number of low-cost aftermarket option market charger. Many chargers are more concerned about cost issues, without attention to performance, these chargers using inexpensive components, or the lack of common-mode noise can help reduce specific components.
The power and ground supply voltage with respect to ground voltage fluctuation, but between maintaining the same pressure, it will form a common mode noise. Such fluctuations only in the ground-coupled fingers touch screen that can affect the performance of the touch screen. Finger pressed with the same electric potential, mobile power and ground relative to its volatility will lead to noise injected by a finger touch screen. The amount of charge injected depends on the peak-to-peak voltage of noise.
In addition, the amount of the charge transport is also affected by two factors significantly affect: the fingers and the contact area between the touch screen and the touch screen overlay thickness of the lens.
The higher the capacitance, means injection of the touch screen, the greater the noise. In this case, the capacitance of a parallel plate is formed on one side by the finger contact area, the other side of the reception by the touch screen sensor electrode. First, TFT Display Module with the finger in contact with the touch screen area increases, the capacitance also increases accordingly proportional. However, since the receiving electrode from extremely narrow row or column form, the actual function of the diameter of the fingers.
2013年10月7日星期一
Splicing unit slim and lightweight LCD liquid crystal mosaic
English full name of the LCD Liquid Crystal Display, LCD is the structure of two parallel glass in which the liquid crystal placed , two pieces of glass with a plurality of vertical and horizontal center of the small wire rod through the energization to control the crystal or molecular changes direction , reflecting the light generated screen.
LCD consists of two glass composition, thickness of 1mm, during which the liquid crystal material containing a uniform distance apart . Because the liquid crystal material itself is not light , so both sides of the screen with the lamp as a light source , and in the back there is a backlit lcd module panel ( or even light panels ) and reflective film, backlit panels are composed of a fluorescent substance can emit light , its main function is to provide a uniform background light .
Light emitted by the backlight passing through the polarizing filter layer after the first layer containing the liquid crystal droplets thousands crystal layer . The droplets of the liquid crystal layer are included in the small cell structure, one or more cells constitute one pixel on the screen . Between the glass and the liquid crystal material is a transparent electrode , the electrode is divided into rows and columns , the intersection of row and column , the voltage is changed by changing the optical state of the liquid crystal , the liquid crystal material acts like a small light valve .
The liquid crystal material is the control circuit portion and a peripheral driving circuit portion . When the LCD of the electrode generating an electric field , the liquid crystal molecules will be distorted , and thus will pass through one of the refraction of light in a regular , and then through the second layer of the filter layer filtering is displayed on the screen .
The LCD is only in recent years developed a splicing technology , its greatest advantage is its low power consumption , light weight , long life, no radiation, screen brightness uniformity , OLED Module etc., but the biggest drawback is that LCD larger patchwork . Only a fraction of a millimeter and DLP patchwork is unable to compete . The display requires very sophisticated users, a little bit of regret , which is currently only occupy LCD splicing key factor in low-end market .
To reduce patchwork , patchwork gives users reduce the interval sense , LCD manufacturers have been stitching also constantly work with. In recent years , has introduced a more narrow patchwork LCD splicing unit , from the initial 7.3mm, to 6.7mm, and then in 2011 launched a new 5.5 mm LCD splicing unit , lead the way , and continue to get a breakthrough in terms patchwork , setting off a wave of LCD splicing again and again .
LCD consists of two glass composition, thickness of 1mm, during which the liquid crystal material containing a uniform distance apart . Because the liquid crystal material itself is not light , so both sides of the screen with the lamp as a light source , and in the back there is a backlit lcd module panel ( or even light panels ) and reflective film, backlit panels are composed of a fluorescent substance can emit light , its main function is to provide a uniform background light .
Light emitted by the backlight passing through the polarizing filter layer after the first layer containing the liquid crystal droplets thousands crystal layer . The droplets of the liquid crystal layer are included in the small cell structure, one or more cells constitute one pixel on the screen . Between the glass and the liquid crystal material is a transparent electrode , the electrode is divided into rows and columns , the intersection of row and column , the voltage is changed by changing the optical state of the liquid crystal , the liquid crystal material acts like a small light valve .
The liquid crystal material is the control circuit portion and a peripheral driving circuit portion . When the LCD of the electrode generating an electric field , the liquid crystal molecules will be distorted , and thus will pass through one of the refraction of light in a regular , and then through the second layer of the filter layer filtering is displayed on the screen .
The LCD is only in recent years developed a splicing technology , its greatest advantage is its low power consumption , light weight , long life, no radiation, screen brightness uniformity , OLED Module etc., but the biggest drawback is that LCD larger patchwork . Only a fraction of a millimeter and DLP patchwork is unable to compete . The display requires very sophisticated users, a little bit of regret , which is currently only occupy LCD splicing key factor in low-end market .
To reduce patchwork , patchwork gives users reduce the interval sense , LCD manufacturers have been stitching also constantly work with. In recent years , has introduced a more narrow patchwork LCD splicing unit , from the initial 7.3mm, to 6.7mm, and then in 2011 launched a new 5.5 mm LCD splicing unit , lead the way , and continue to get a breakthrough in terms patchwork , setting off a wave of LCD splicing again and again .
2013年9月27日星期五
Touch screen use and maintenance points
Due to technical limitations and equipment in different environments, as water droplets on the screen, dust and other contamination does not work properly, so the touch screen is also the same as with ordinary machines require regular maintenance. And because the touch screen is a variety of electrical equipment highly integrated touch one machine, so the use and maintenance should pay attention to some of the following questions:
A) before turning on the screen with a soft dry cloth;
2) water or beverage falls screen causes the software to stop the reaction, which is due to water droplets and the finger having similar characteristics, need to wipe the water droplets;
3) Touch screen controller can automatically determine the dust, but too much dust will reduce the sensitivity of the touch screen, Graphic LCD Display just use a dry cloth to wipe clean the screen;
4) application of glass cleaner dirty fingerprints on the touch screen and oil;
5) strict accordance with procedures and off the power, turn off the power in the reverse order;
6) generate a large number of temporary files on your hard drive, or if you frequently break off without exiting Windows directly, will soon lead to hard disk for errors. Therefore, the need to periodically run Scandisk scan the hard disk error, the application can set the password for the best way to exit the application and Windows re-power;
7) pure touch screen program does not require the mouse cursor, the cursor will only make the user can not concentrate;
8) should choose the most adequate application uses a simple anti-mouse mode, because of the complex model requires sacrifice latency and system resources;
9), as the deteriorating environmental conditions, periodically clean the touch screen to open the nose and the inner surface of the reflective stripes. Specific method is: Open the cover on both sides of the machine, you can find the front nose withhold release latch organs, open the body to release the latch. Lift the front of the nose, you can see the touch screen control card, unplug the touch screen cable, removable head to head back and touch screen. Look carefully at fixed touch screen method, remove the touch screen cleaning, be careful not to use cardboard or hard cloth, Character LCD Modules do not scratch the reflective stripes. Finally, in reverse order and the original structure will head recovery;
10) belong to man-machine interface touch-screen machine control engineering Copyright, fever than larger, it is necessary to take on the touch screen to cool the body and the surrounding environment measures.
A) before turning on the screen with a soft dry cloth;
2) water or beverage falls screen causes the software to stop the reaction, which is due to water droplets and the finger having similar characteristics, need to wipe the water droplets;
3) Touch screen controller can automatically determine the dust, but too much dust will reduce the sensitivity of the touch screen, Graphic LCD Display just use a dry cloth to wipe clean the screen;
4) application of glass cleaner dirty fingerprints on the touch screen and oil;
5) strict accordance with procedures and off the power, turn off the power in the reverse order;
6) generate a large number of temporary files on your hard drive, or if you frequently break off without exiting Windows directly, will soon lead to hard disk for errors. Therefore, the need to periodically run Scandisk scan the hard disk error, the application can set the password for the best way to exit the application and Windows re-power;
7) pure touch screen program does not require the mouse cursor, the cursor will only make the user can not concentrate;
8) should choose the most adequate application uses a simple anti-mouse mode, because of the complex model requires sacrifice latency and system resources;
9), as the deteriorating environmental conditions, periodically clean the touch screen to open the nose and the inner surface of the reflective stripes. Specific method is: Open the cover on both sides of the machine, you can find the front nose withhold release latch organs, open the body to release the latch. Lift the front of the nose, you can see the touch screen control card, unplug the touch screen cable, removable head to head back and touch screen. Look carefully at fixed touch screen method, remove the touch screen cleaning, be careful not to use cardboard or hard cloth, Character LCD Modules do not scratch the reflective stripes. Finally, in reverse order and the original structure will head recovery;
10) belong to man-machine interface touch-screen machine control engineering Copyright, fever than larger, it is necessary to take on the touch screen to cool the body and the surrounding environment measures.
2013年9月25日星期三
Large-screen display technology advantage analysis
From space, time limits video conferencing has become the most popular business conference modes, large-screen display solutions through convenient Internet transmission lines and commercial LCD display with high-definition multimedia display device , the ultra-high -resolution images and CD -quality stereo audio, and real-time transmission environmental conditions , Character LCD
Modules so that participants feel immediate and interactive communication , provide the user with an immersive "face to face " experience .
Currently , video conferencing solutions have been widely used in many Fortune 500 companies , effectively saving enterprise travel costs, so that the work efficiency of decision making has been effectively improved.
In recent years , the domestic market, large-screen mosaic wall , the LCD display wall products meteoric rise to become the industry is a major bright spot. LCD splicing technology, as a new large-screen application technology categories , and its unique features are becoming market applications to change the traditional pattern of tiled display great strength . Taken to prison + control room, Graphic LCD Module into the commercial center for the characteristics of the liquid crystal display wall products are becoming more widely achieved within the traditional DLP Video Wall can not do all sorts of miracles.
Currently , video conferencing solutions have been widely used in many Fortune 500 companies , effectively saving enterprise travel costs, so that the work efficiency of decision making has been effectively improved.
In recent years , the domestic market, large-screen mosaic wall , the LCD display wall products meteoric rise to become the industry is a major bright spot. LCD splicing technology, as a new large-screen application technology categories , and its unique features are becoming market applications to change the traditional pattern of tiled display great strength . Taken to prison + control room, Graphic LCD Module into the commercial center for the characteristics of the liquid crystal display wall products are becoming more widely achieved within the traditional DLP Video Wall can not do all sorts of miracles.
2013年9月22日星期日
LCD LFD large-screen system technology advantages
LCD46H splicing LCD large screen display system is designed according to user needs . It the most remarkable SAMSUNG DID LCD high definition ultra narrow digital display technology, splicing technology , multi-screen applications such as image processing technology integrated into one , forming a high-brightness , high- definition, high intelligent control , 192x64 lcd methods of operation advanced large screen display system .
Through this LCD large screen display system can achieve the production dispatching system computer image and video image information together, show that the formation of a fully functional, technologically advanced displays images and information management control systems for video surveillance, multimedia display , production , scheduling, monitoring needs , and complete replace the existing analog screen for public display,lcm module monitor , manage to provide an interactive and flexible system to adapt to the evolving public displays , meetings, production, scheduling work . In order to make timely judgments and processing, real-time monitoring and centralized control.
We designed this LCD large screen display system has a number of important industries in the domestic large-screen display applications system use, and the industry and users alike !
2013年7月26日星期五
Affect the performance of the main parameters plastic box
Maximum particle size; viscosity; curing temperature; regular price ion content; molecular size;20x4 lcd permittivity
Plastic box factory adaptive testing methods and criteria:
Viscosity: A, Test Method: Test test box gluing degree.
B, criteria: viscosity within the parameters provided by suppliers and the final viscosity is similar to the production of frames.
Screen Performance: A, Test Method: Silkscreen at current production process conditions tested plastic box, observe the printing results.
B, criteria: full uniform lines, screen width is less than or equal to the current production of plastic box.
Curing performance and reliability: A, test method: the production process according to the present conditions of the sealant cure.
B, criteria: cure completely cured product was boiled four hours frameless plastic cracking and leakage phenomenon; warp-400C freezer four hours after the frameless plastic cracking and leakage phenomenon.
Reactive with the liquid crystal: A,mini lcd module test method: plastic box to be tested according to the production process conditions for the test sample, test its optical properties.
B, Criterion: plastic box near the viewing area without extending in a direction toward the domain. Does not affect the optical parameters on the LCD, optical properties after high temperature and humidity changes reliability requirements in the product range.
Plastic box factory adaptive testing methods and criteria:
Viscosity: A, Test Method: Test test box gluing degree.
B, criteria: viscosity within the parameters provided by suppliers and the final viscosity is similar to the production of frames.
Screen Performance: A, Test Method: Silkscreen at current production process conditions tested plastic box, observe the printing results.
B, criteria: full uniform lines, screen width is less than or equal to the current production of plastic box.
Curing performance and reliability: A, test method: the production process according to the present conditions of the sealant cure.
B, criteria: cure completely cured product was boiled four hours frameless plastic cracking and leakage phenomenon; warp-400C freezer four hours after the frameless plastic cracking and leakage phenomenon.
Reactive with the liquid crystal: A,mini lcd module test method: plastic box to be tested according to the production process conditions for the test sample, test its optical properties.
B, Criterion: plastic box near the viewing area without extending in a direction toward the domain. Does not affect the optical parameters on the LCD, optical properties after high temperature and humidity changes reliability requirements in the product range.
2013年3月24日星期日
LCD module
The liquid crystal display device is the basis of a high-tech components, and its application Pat is very broad, but for many people, the use of assembly still find it difficult. Special dot-matrix liquid crystal display devices, users will feel no start. Nonhuman people understand and have special connection mode and the special equipment needed, therefore the liquid crystal display device of the users want someone to do it, the liquid crystal display device with the control, drive ICs mounted together to form a functional member, the user simply traditional crafts can be assembled into a whole system.character LCDs
Broadly speaking, all together by the liquid crystal display devices and integrated circuits assembly parts belong to the "module", but in fact, we usually refer to the "module" is a dot-matrix liquid crystal display device assembly dot matrix LCD module especially because it is a dot-matrix liquid crystal display products in addition to some special varieties of some of the large quantities (such as translation, communication with), the manufacturer is directly supplied to the user liquid crystal display device, almost all generic type dot matrix liquid crystal display devices are processed into the module after the supply users, so it is easy to form a the LCD module dot matrix LCD module misunderstanding.OLED display module
Broadly speaking, all together by the liquid crystal display devices and integrated circuits assembly parts belong to the "module", but in fact, we usually refer to the "module" is a dot-matrix liquid crystal display device assembly dot matrix LCD module especially because it is a dot-matrix liquid crystal display products in addition to some special varieties of some of the large quantities (such as translation, communication with), the manufacturer is directly supplied to the user liquid crystal display device, almost all generic type dot matrix liquid crystal display devices are processed into the module after the supply users, so it is easy to form a the LCD module dot matrix LCD module misunderstanding.OLED display module
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