Display principle LCDTFT DID lcd module screen features and analytical

LCD (LiquidCrystal) that liquid crystals , both as a liquid ( energy flow ) and like crystals ( optical properties of crystals ) of the material. Alignment of liquid crystal molecules have a certain order and arrangement of liquid crystal molecules will change under the influence of external electric field, thus affecting its optical properties.
LCD (LiquidCrystalDisplay, abbreviated LCD) is a thin glass plate constituted of two parallel , the distance between the two glass sheets is very small, is filled with liquid crystal is divided into small units . LCD panel itself does not light , it is through the LCD backlight to make the Tsingtek Character LCD Display screen lights up . Advantages of LCD screen is small, light weight , large area display , image stabilization, no radiation, low power consumption and environmental protection features . Compared with CRT monitors, LCD monitors power consumption CRT only 1/3 of the thickness of only 1 / 8 , weighs less than 1 /3 of the space savings of more than 60 %.
TFT LCD (Thin-FilmTransistor), abbreviation thin film transistor liquid crystal screen is the top material belonging to an active matrix type liquid crystal screen , the back has a special lamp, can be " actively " on each individual pixel on the screen control , which is what we often say that the active matrix TFT, it reacts faster , viewing angle , color saturation. Due to the arrangement of TFT LCD screen has a memory , so no restitution immediately after the current disappears , effectively improve the ability to play a dynamic picture .
What is DIDTFTLCD?
DID (DigitalIntelligenceDisplay) Tsingtek TFT LCD Module is dedicated LCD screen. It is based on the technical requirements used in security , radio and television , medical, industrial , and public areas such as media, publishing professional monitors designed and produced , following the NB, PC and fourth generation of LCD TV products . Its excellent display performance , has been recognized as the most high-end, the best LCD monitor screen.

Splicing screen Huaping problems

One : Check the Character LCD Display splicing screen and graphics card connection is loose. Poor contact will result in a " clutter ", " noise " is the most common form of Huaping phenomenon .

Two : Check the graphics card is overclocked . If excessive overclocking graphics cards , usually irregular , intermittent stripes. At this time , it should be appropriate to reduce the overclock . Note , first of all to reduce the memory frequency .

Three : Check the graphics quality . If after replacing graphics Huaping problems , and in the use of the first and second trick did not work , the card should be checked against electromagnetic interference and electromagnetic shielding whether the quality of clearance. Specific approach is: some of the parts that may cause electromagnetic interference as far away from graphics card installed ( such as hard disk ) , look Huaping disappears. If it is determined that the electromagnetic shielding function graphics , but off , replace the video card, or home-made shield .

Four : Check the lcd module splicing screen resolution or refresh rate is set too high. LCD splicing screen resolution is generally lower than CRT monitors , if more than the manufacturer's recommended best resolution , there may Huaping phenomenon.

Five : Verify installed an incompatible graphics card driver. This is generally easy to ignore , because the graphics driver updates faster and faster ( especially NVIDIA graphics card ) , some users are always eager to install the latest version of the driver . In fact , some of the latest test version of the driver either , either graphics or game for a specialized version optimized for the use of such drives can sometimes lead to the emergence of Huaping . Therefore , it is recommended that you try to use Microsoft-certified drivers , the best use of graphics drivers provided by the manufacturer .

Six : If you use more than five strokes later, still can not solve the problem , there may splicing OLED Module screen quality problems. In this case, replace the other monitor to be tested.

LCD splicing screen "war " LED display

Customers often consult the difference between lcd and led , LCD splicing screen with LED display which is better ? Here a more comprehensive explanation of the difference between the next lcd and led in the end is what ? LCD splicing screen with LED display characteristics and main applications in what place ? led and lcd difference really so great?

I. What is LCD? What is the lcd module splicing screen ?

LCD stands for liquid crystal displays. LiquidCrystalDisplay , mainly TFT, UFB, TFD, STN LCD and other types of procedure entry point could not be located in the dynamic link library .

LCD splicing screen with LCD display unit splicing of the way through splicing control software system , to achieve the effect of a large-screen display splicing screen body . There are now common splicing 5.3MM 55-inch ultra-narrow LCD splicing , 6.7MM 46-inch Ultra Narrow mini lcd module splicing screen , 47 -inch LCD stitching, 60 inch and 40 inch LCD Video Wall Narrow LCD splicing system .

Second, what is LED? What is a LED display ?

LED is the acronym for Light Emitting Diode LightEmittingDiode . LED applications can be divided into two categories: one LED display ; Second, single-tube LED applications, including backlight LED, infrared LED and so on . LED display now , China's basic design and production technology level and international synchronization. LED display is formed by light-emitting diodes arranged in a display device 5000 yuan a single computer configuration . It uses low- voltage scan driver with : low power consumption , long life , low cost , high brightness , less failure, large visual distance and other characteristics .

Component parts of FFU control unit

FFU control can be broadly divided multi-gear switching, continuous adjustment, computer control, such as several, but the functions are single control, zoning control, alarm, TFT Lcd Modules running status display.

But what causes FFU in such a long time has not been widely applied? There are three issues dominate.

First: the noise problem. You can think about at the time of the production process level, together with the noise of thousands of wind turbines would be?

Second: the pressure balance. To a large static pressure box, each with a different corner of the fan is able to get a balanced pressure, which at the time also can not be guaranteed.

Third: maintenance issues. FFU itself cost is relatively high, if it can not guarantee the life of the motor, then replace will bring additional investments. These are caused when companies do not choose to use FFU of the main reasons.
With the development of technology, these problems become easily.

One, first reduce the fan noise itself, character oled plus the unique duct design, improved efficiency of the fan, but also greatly reduces the noise

Second, the development of computers, advanced computer control system to solve the high-volume FFU pressure imbalance in the

Third, raise the level of the production process, extending the life of the fan; German EBM-quality centrifugal fan with long life, maintenance, small vibration and other features, the working life of 50,000 hours or more.

Dot matrix character LCD module

It is composed of dot matrix character lcd module and a dedicated row, column drivers, controllers and necessary fittings, structural parts assembled, and can display numbers and Latin characters. The module itself has character dot matrix character generator, display capacity, feature-rich. Usually this kind of module can also be displayed at least 8 a row or 16 l or more lines of characters. The lattice arrangement of this module is 5 × 7,5 × 8, or 5 × 11 array of pixels arranged in a bundle consisting of. mini lcd module  Each 1-bit, a bit between each interval between each line has a line interval, it can not display graphics, the specifications are as follows:
 8 a row; 2 lines
16 a line; 2 lines; 4 lines
20 a line; 2 lines; 4 lines
24 a line; 2 lines; 4 lines
32 a line; 2 lines; 4 lines
40 a line; 2 lines; 4 lines
Usually in the module control, the drive has been cured good 192 characters character font libraries CGROM, but also has to create a dedicated user-defined character RAM CGRAM, allows users to create 8 5 × 8 dot matrix characters.

Liquid crystal sealing material the use of plastic box

Frozen plastic box the best site with the same operating temperature environment thawed 4 hours, and then opened the cover to access, access to a surplus after such containers to immediately stamped seal plastic box, plastic box in order to avoid The solvent absorption of moisture and contamination by other solvents.
With plastic when sufficiently stirred,Character LCD Module stirring time is longer, the viscosity of the smaller screen is better. But overly vigorous stirring can easily lead to the frame adhesive solvent evaporation increases.
After stirring the boxes to vacuum bubble gum, usually standing not eliminate air bubbles mixed Tibet, in a subsequent printing of the phenomenon is more likely to break.
Glue in the screen printing frame, the viscosity will decrease over time, so the frequency of use of recycled plastic or old plastic mixing ratio should be timely adjusted to maintain the required printing line width fluctuation range.
Good plastic box plastic box printing products should be pre-drying solvent inside the catalyst, and to ensure a stable plastic box so the initial height. And try to ensure complete evaporation of the solvent, so as to avoid pairing combination box again after evaporation in a sealed box affect the performance oriented film.
Plastic box plastic box curing should have cured promptly removed when the temperature applied pressure, first make plastic box full line after curing, relatively dense plastic box;OLED Display Module two adhesive curing temperature in the box, the plastic space near the softening temperature of the powder has been in external force causing more unrecoverable deformation, making the cell thickness parameters deviate from the design parameters. But for some bad space powder dispersion value can increase fitness Lou box glue curing temperatures and longer pressing time can be a slight improvement in the box of powder particle dispersion value; such cases need special attention is powder box number and a rebound stress after the bubble problem caused by the liquid crystal temperature.
Plastic box storage and handling methods:

Plastic storage box when confined, moisture, shading, at-200C ~-150C temperature storage of six months.
According to regulations when handling chemicals regulation

LCD-screen applications in recent years to analyze the future market

2010 LCD screen splicing products are used in some very low-end security projects. The monomer scale of these projects tend to be smaller, the overall size of the market is not low, but the profit ratio is relatively high. During this period, the LCD display market showed the general characteristics of the "low level". LCD display market matures, not only on the technological advances in the product, but also in the market breakthrough applications. After 2010, the LCD splicing products began to appear in the technical progress on the basis of a breakthrough in many applications. For example, digital signage outdoors in bright stitching, large-scale security command center, these new fields of application not only to expand the the LCD splicing industry market, is to enhance the taste level of the overall market, and profit levels. Progressive breakthrough in the application market on the basis of the number of support manufacturers of LCD screen mosaic wall in the last two also significantly increased.TFT LCD Display

End of 2011, the number of companies engaged in LCD-screen industry, compared to the same period in 2010 nearly doubled, Samsung, LG and other LCD screen technology as the leading LCD Video Wall industry is showing unprecedented momentum of development. Since 2009, Samsung introduced a 46-inch ultra-narrow LCD splicing products, LCD-screen market continued to show high growth.

In 2012, LED backlight for LCD-screen good market performance so that more and more manufacturers are beginning to introduce each LED backlit LCD screen splicing products, many businesses, including Chong Wei, Skyworth, TV News, Trinidad and other well-known manufacturers have launched the LED-backlit LCD screen splicing products. The application of LED backlight for LCD-screen success for LCD-screen to open up the green channel of energy saving and environmental protection, business promotion sales and a bright spot, growing very fast.

Monitoring is basically LCD splicing screen 7 * 24 hours of operation, the advantage of low energy LED light source you can save a lot of electricity costs, while reducing the cooling problems caused by large power consumption, extend the LCD splicing screen life . Technically, the traditional CCFL light source products on the decline, the use of LED backlight LCD screen splicing products, higher brightness, smaller power consumption. For applications in the security surveillance industry is very advantageous.Character LCD Modules