lcd module lcd display Introduction

Because lcd module along with self-luminous, without backlight, high contrast, thin, wide viewing angle, fast response, flexibility of the panels can be used in a wide temperature range, the process is relatively simple structure and the characteristics such as excellent, being considered to be the next generation of flat panel display technology emerging applications.For organic light devices, we can luminescent material will be divided into two types: small molecule OLED and polymer OLED Module  (also known as PLED). Preparation their differences mainly in the different devices: small molecule devices mainly used vacuum thermal evaporation process, the use of spin coating of polymer devices or inkjet technology. lcd module , thin flat display device, which lcd modules  of a number of color or monochrome pixels, placed in front of the light source or reflector side. LCD power consumption is very low, so much favored by engineers, apply to the use of the battery of electronic equipment. Its main principle is based on the liquid crystal molecules to produce electrical stimulation point, line, surface and compose the picture with the back of the lamp.

3D movies really hurt the eyes do

3D TV is a recently popular new things . But now there are a lot of people say that 3D movies hurt the eyes ,character oled then it really true ?
3D content itself is actually no damage to the eyes . Because we humans are in fact seen every day 3D stereoscopic images . There are still a number of medical institutions in the use of 3D content for young people to correct myopia and treatment , we can see , 3D does not contradict itself and the vision health .

As some people get dizzy watching 3D , uncomfortable , this is actually about and display device itself . For example, some 3D TV in 3D mode due to the lower refresh rate, flicker strong sense , it is easy to arouse the viewer's visual fatigue ; also some 3D sources when shooting because there is no good debugging equipment, resulting depth of field problems, this picture also being looked likely to cause visual fatigue and even nausea , TFT LCD Display uncomfortable. All these questions can not blame onto 3D concept.

LCD screen, PDP screen, DLP big-screen TV wall

In the growing field of surveillance technology, high-definition monitor will also be a shining star, re-examine it in the light of the world around us. With the increasing development of monitoring technology, high-definition surveillance technology as one of the main directions of development, combined with network technology brings new changes, competition in the market continue to meet demand, tend to think about a rational, high-definition monitors are is a high-profile, high demand into our world.

LCD LCD TV wall mosaic

LCD LCD splicing DID Korea currently represented on the display market although there SHARP, LG, NEC and other brands, but DID outshine its excellent value for money in the LCD panel stitching techniques. The so-called large-screen LCD LCD, LCD display unit is the use of mosaic way through splicing control software system to implement a large-screen display screen body mosaic effect.

As a TV wall mosaic display terminals, OLED Display Despite these advantages, but as a mosaic TV wall display unit, its shortcomings are fatal: it is the current patchwork teach their large, and the display unit in the three largest TV wall mosaic, so many Users had to reluctantly give up. LCD TV wall mosaic with a thin, light weight, low power consumption, long life, no radiation, etc., and its delicate screen, high resolution, excellent performance on key performance indicators, has made it become the mainstream of development prospects.

Large plasma-screen TV wall system

Plasma display panels (PDP) is a use of gas discharge display technology, which works with the lamp is very similar. It uses a light emitting element such as a plasma tube, each plasma tube corresponds to a pixel on the screen, the screen as a glass substrate, spaced from the substrate, forming a discharge space. Filled into the discharge space neon, xenon, an inert gas mixture as a working medium, the inner surface of two glass substrates coated with a metal oxide conductive film as the excitation electrode. The plasma discharge generates ultraviolet rays, ultraviolet rays excite phosphor coated with red, green and blue phosphor screen, visible light emitting phosphor screen, the image appears. When added to the voltage on the electrodes, the discharge space of the mixed gas plasma discharge phenomenon will occur, also known as plasma effects.

DLP TV wall system

DLP. This technique is to first go through a digital video signal processing, and then the light is projected. Specifically, DLP projection technology is the application of a digital micromirror chip (DMD) to do the key elements to achieve digital optical processing. The principle is that a light source by an integrator (Integrator), homogenizing the light, the three primary colors through a color wheel (ColorWheel), separating the light into R, G, B three colors, and then imaged by the lens color DMD on.

Currently, more common large-screen TV wall system, according to work is usually divided into three main types of display units: low temperature 160x160 lcd TV wall mosaic display unit, PDP display unit and DLP rear projection TV wall mosaic mosaic display unit. The former two of which belong to the flat panel display unit splicing system, which belongs to the projection unit splicing system.

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.

True green LED TV

LED backlighting and edge light is an important factor in the rise of the implementation of the EU RoHS Directive . The Directive stipulates that from 1 July 2006 onwards, the EU member states to eliminate sales of electronic devices in the lead, cadmium, mercury , OLED Module hexavalent chromium , polybrominated biphenyls and polybrominated diphenyl ethers and other substances. And Mercury is CCFL lamps and other types of fluorescent lighting the main ingredients. LED lights then do not use mercury.
In power consumption , compared with the ordinary CRT TV , flat panel TV power consumption considerably , many consumers of the energy situation on TV are quite concerned . It is understood that in 2008 sales of 12 million flat-screen TV , such as by working four hours a day every TV , lcd module every year on the need to consume 2.4 billion kWh of electricity , the equivalent of several large sum of annual generation capacity of thermal power plants .
The LED brightness can be carried out with the initiative to adjust the screen brightness , energy efficient compared to LCD TVs can reach more than 30% . This performance in some dark scenes images , only need to adjust the backlighting of the necessary area ( on the screen showed black or dark part ) local lighting , which can to show you a chiaroscuro effect of natural high-quality images .

Large-screen LCD splicing debugging method correctly interpret

LCD splicing both individually as a monitor , they can assemble into large screen use . According to different needs and achieve big variable is also variable small Variety large screen features: a single split -screen display , single-screen alone, any combination of display , full-screen LCD stitching, double stitching LCD splicing screen , vertical screen display, image borders optional compensation or cover , support for digital signal roaming, zooming stretching, cross-screen display , a variety of plans to set up and run display , full HD signal real-time processing . LCD splicing is a complete finished product, ie, hang with , installation is as simple as building blocks , single or multiple LCD splicing are very simple to use and install . lcd module stitching around the edges only 9mm width , surface protective layer also with tempered glass , built-in smart temperature alarm circuit and the unique " fast casual" cooling system. Everything, not only adapt to the digital signal input , the analog signal support is also very unique . LCD splicing series of products using the world's most unique and cutting-edge digital processing technology, allowing users to truly experience the full HD screen effect .
So, so perfect large screen display system really that simple? Answer is no, how to properly debug LCD splicing screen is not as easy as people think .
Normally, LCD splicing system hardware installation does not have a lot of time is also relatively simple , and debugging more complex compared to the latter . Video wall system debugger, the image appears unclear. If the display is not satisfactory , especially in low light , blurred edges of the image (the source resolution is too high) stack aliasing interference fringe image sense ( or drop-frame ) , the result is: a liquid crystal mosaic image does not contain a clear phenomenon. Immediately to determine whether the product is not available. Image, control products, such as system , matrix switchers , splitters, signal transmission cable , transmission, processing and display display terminal , DVD, video cameras, computers , etc., etc. Displayed video source.
Exclude the need to pay attention to two points:
The first : to check the first question bear certain period of time , checks will be deleted once the issue is resolved , you can save time in other parts of the checks can be . First of all, one by one, the only way to form a terminal display resolution and signal source display resolution, not only for point to point , and if this problem is not solved, are excluded from all devices on it to verify the video signal , graphic lcd modules If you want to reach the end dependent on the adaptation or the display format can be greatly improved the brightness of the image , or replace the device's display terminal zoom you can increase conversion device such as the use of that change the nature of the signal , the video signal can be improved VGA video signal .
Second, please see the body to make the losses to a minimum standard distance range image and signal source impedance bandwidth between the matrix switcher. Finally, the focus and convergence of the display device is normal , the signal processing circuit is good. The most important are as follows. High ground , reliable, good line of construction , so that the signal ground , solid interface cables neatly separated , and the force and strict as power, signal lines, such as UPS, AC power connectors at both ends of the total number of tags and manage a simple test .
Analysis: according to the symptoms , if not synchronized , synchronous interface cable, and transmission equipment , control and display terminal synchronizing signal source frequency range of the inspection point. By analyzing the test time is too long, the picture is too small , ghost , transmission cables , to confirm whether it is a solution to increase the signal amplifier and other equipment, or lane changes . Concentrated bad, you can adjust the display terminal.

LCD large screen display wall of the viewing angle

LCD large screen and large-screen CRT display wall , there is still a shortcoming, which is tilted at an angle if the user will not see the image on the screen . For this early use of laptop users must have some experience, using a laptop computer , front screen image is the most clear , if angle is tilted to a certain angle will see the screen image . Up to what point can see the screen images , this angle is the viewing angle. Viewing angle can be divided into horizontal viewing angle and vertical viewing angle . For this shortcoming , LCD manufacturers have made ​​the development of a great effort , and now the LCD viewing angle can reach 140 degrees , in fact, no one actually so inclined angle to see the screen . For professional users, always facing the screen majority.
As for the resolution, brightness , contrast, in terms of these indicators , LCD monitors and CRT monitors basically the same. If the lcd module on the technical indicators perfectly acceptable , and that the only consideration is the price , just a year ago , big screen LCD 's price is unacceptable , the hundreds of million, and now with the LCD mass production , cost reduction , LCD has come to a reasonable price , and with 17 -inch LCD monitor , it is now the price is about 4500 yuan or so, here we should not ignore a problem, that is the same as LCD monitors unlike CRT monitors there is an effective display area , said 17-inch LCD monitor effective display area is 17 inches, which is 19-inch CRT monitor with an effective display area is basically the same . Now 19 inch CRT market price of about 3,000 yuan, the gap between 1,500 yuan, 1,500 yuan in exchange for which zero radiation , screen flicker , takes a long time glued to the screen for the graphics / video design, publishing and other professional field in terms of users is how to enjoy it !
LCD large screen display wall in recent years gradually into people's lives and work of the new display carrier. Due to its stylish, low radiation , energy-saving , space-saving , splicing gap is small, image stabilization, clearly , by the majority of users. With the market launch , the decline in prices , so that more users have the opportunity to use this product. Therefore, using OLED Module wall units , all walks of life began to be promoted and applied . Now has become a large-scale exhibitions , public places, video conferencing, multi-purpose hall , television , entertainment, television monitors and other places essential to the display device.

PI-oriented film entry knowledge

As the liquid crystal molecules anchored the main material, application-oriented films from pure ionic interactions to intermolecular forces in a major development, application-oriented film, not only ionic bonding force, but the main thing is to have molecular key force, coupled with the continuous development of surface treatment technology,Character LCD Module continuous improvement of processing machines, in addition to increase production, and improve the viewing angle requirements, guide further research trial in the membrane material, the orientation film material has almost finalized.

It is surprising that, as a general guide TN-LCD using membrane materials, production processing, but in some LCD production plant harder than STN-LCD. In fact, STN-LCD products, low contrast, viewing angle is wide, but obscures some of the electrical properties of oriented films of defects. Unless there is a very serious collapse pretilt angle, oriented film defects in the STN-LCD display products, the total does not cause customers special attention. But in TN-LCD production on membrane performance oriented migration is often a direct reaction to the product's effect on the 128x32 oled.
Anchoring the liquid crystal material molecules, the pretilt angle of the alignment film in the TN-LCD and STN-LCD product is almost the same role. However, TN-LCD and STN-LCD compared, because the movement of the liquid crystal molecules in a different way, and thus the two types of product-oriented film soon diverged, STN-LCD-oriented film material used in the production, the use of more stringent environmental and purity of raw materials. In addition there are a number of manufacturers in the branched-chain molecules are used on other long-chain and secondary chain technology, so that more stable branched molecules, the pretilt angle is more consistent, but this structure due to the secondary branched intermolecular forces between the mutually exclusive , so that there is a certain branched structure similar to their own repair function, so that the performance of the machine-oriented processing deficiencies have some compensation, because in theory, mechanical precision insatiable pretilt alignment film processing accuracy requirements. This approach produced a guide film used in a low drive large ones, small area, wide line spacing on the product, its unique properties may not be reflected in production but high drive large ones, a large area and micro-line distance products, improve product yields, improve product stability and repeatability of production, and its excellent performance is the other without using this technology to produce oriented films can not be compared.
TN-LCD products with the guide film, due to the width of the viewing angle, it is impossible using the above-described structure, but due to the production cost reasons, is not necessary. And because the process improvements, machinery and equipment to improve the performance of the previous cost-oriented film material that was once affected by the process is unstable because, by the exclusion of everyone, but now because it can be in different processes under different effects, but more by a number of TN-LCD manufacturer of all ages, especially in some process adjustments automatic production line easily.

Voltage and the voltage of the five tone effect

VGH: Vgatehigh, is a high-level gate potential, which is a voltage level to open gate; Graphic LCD Display

VGL: Vgatelow, gate level is low, that is, close gate voltage level, the voltage at the second driving force driving the third order, this voltage is used to generate Vgoffl;

VgoffL: Vgateofflow, is the gate voltage of the low-level closed (use the driver in the third-order by VGL get through a voltage conversion circuit);

VgoffH: Vgateoffhigh, a gate turn-off voltage of the high level (in the third-order driver used to eliminate the next stage gate closed by the storage capacitor (CS ON GATE) causing the voltage value is changed), the value of its basic can be considered as Vgoffl + Vcom; 144x32 lcd

As VCOML and VCOMH, I would like to not have to explain, we all should know it.
These are some personal opinion, I do not know is not right, do not wish to mislead you go.
We can know that some IC data above refers only to VGH and VGL, it is because, Fengyun IC supports only second driver, some IC data at VGH, VGL, VGOFFH, VGOFFL, have, it is because this IC supports second and third driving.
VDDD is a digital circuit voltage; VDDG, VEEG second order-driven GATE switch level; VCOM Needless to say, the liquid crystal deflection reference voltage; VDDA on the PCB will be separated by divider circuit voltage of 10 to 14 group, As the output of the DAC IC VGMA internal reference voltage divider circuit through the PCB, produce a plurality of reference voltages, can reduce the voltage divider circuit inside the IC, and money.

LED bonding

The purpose of bonding the electrode lead to the LED chip, the finished product lead connections inside and outside work.COG LCD Display
LED is a gold ball bonding process welding and aluminum wire bonding two kinds. Right is aluminum wire bonding process, the first electrode of the LED chip first point on the pressure, and then the aluminum strands to the corresponding bracket above, the pressure on the second point after tearing aluminum. Gold ball bonding process is the first point in the press before burning balls, the rest is similar.
Bonding the LED packaging technology in the key, the main process is the need to monitor the bonding gold (aluminum) wire arch shape, spot shape, tension.
On the bonding process in-depth study into the various issues involved, such as gold (aluminum) wire material, ultrasonic power, pressure welding pressure, chopper (steel mouth) selection, chopper (steel mouth) trajectory and so on. (The figure is the same conditions, two different pressure out of the chopper pad microscopic photographs, both of which there are differences in the microstructure, thus affecting the quality of products.) Here we no longer tired.Lcd display modules