Difference between traditional led display and bar type led display(curtain led display)

Difference between traditional led display and bar type led display(curtain led display)

Traditional led display

LED curtain display

Since it has strips, hollow out of the product form, also known as the bar type led display, because can be pervious to light, does not affect the ventilation and lighting, so they are called the LED curtain display, commonly used in building exterior wall and glass curtain wall inside or outside the installation

LED curtain display is a kind of not only satisfy the requirement of LED lighting products, but also meet the requirements of conventional LED screen display of a new generation of outdoor LED display products. Because the products are light weight, small wind load, flexible installation etc, to build a large outdoor screen, is the first choice for creating dynamic display of landmark landscape products.

Comparison:

Item	Traditional outdoor led display	LED Curtain display
Weight	50-60kg per square meter.	Weight is lighter 60% of traditional outdoor led display
Wind resistance	Big size led screen also has to bear more wind load	Void rate of 40%- 60%, with better With strong ability to resist wind
Super thin	Need complex steel structure for installation	With a small amount of components can be easily at metope
Heat dissipation	Need install fans to help heat dissipation, for big led display, sometimes need air-conditioner	Each article lamp adopt aluminum alloy material, connect fully, therefore can achieve good self cooling.
Showing effect	High definition and high resolution, good for short advertising	Just suitable for long distance advertising
Price and product variety	A lot of kind, with competitive price	Price is little higher
Application	Include indoor and outdoor led display, widely used, such as for cinema, ktv, supermart, substation, highway, and so on	Most use outdoor, also use indoor stage led display

How to solve the problem of LED display black screen

How to solve the problem of LED display black screen

In control system used in the process, we occasionally meet the LED display, the phenomenon of the black screen.The same kind of phenomenon may be caused by different reasons, even display blackening process will vary due to different operation or due to the different environment.Such as it may be a moment of electricity is black, may also be black in the loading process, also can be in after sending black and so on.You may refer to encounter this kind of phenomenon, please note the following aspects to judge "failure":

1.   Please make sure all hardware, including control system, is all right to electricity.(+ 5 v, don't pick up the, wrong)

2.   Check and double-check the serial port of the used to connect to the controller for loose or falls off phenomenon.(if the black in the loading process, probably because the reason is caused, namely in the process of communication was interrupted because of loose communication line, so the screen black. Don't think the screen body didn't move, line can not be loose, please to check, it is important for you want to quickly solve the problem.)

3.   Check and confirm the connection of LED display screen and the distribution of the HUB board connected to the master card is close connections, whether against

4.    Please check and confirm the connection between EQ control card and distribution HUB board 50 core wire for loose or plugged into the phenomenon

5.   If you display interface definition and the HUB board provided does not match will appear black screen phenomenon, please check if there's any loose for your jumper again, open circuit or short circuit phenomenon. If you think that has put the ABCD signals such as one-to-one correspondence, please check the OE signal is connected correctly.(it is strongly recommended that the use and display interface definition matching HUB distribution board)

LED Display VS LCD Splicing Screen

LED Display VS LCD Splicing Screen

With the enlargement of the LED display application range and infiltration, the application of LED electronic display screen and LCD splicing is becoming more and more fierce competition.Today both can be used in some occasions, so how to choose? And what is the difference between both and advantage?

LED display is also called electronic display, is made up of LED dot matrix and LEDpc panel, with red, blue, white, bright green LED lights to display text, images, animation, video, the content of the display.It adopts low voltage scanning drive, has: less consumption, long service life, low cost, high brightness, low malfunction, large Angle of view, the visual distance, etc.It can display the change of text, graphics, images, digital, video;Not only can be used in indoor environment also can be used in outdoor environment, with a LCD screen, projector, TV wall incomparable advantages, is widely used in railway stations, docks, airports, hotels, Banks, securities market, construction market, tax, shopping malls, hospitals, financial, industrial and commercial, post and telecommunications, sports, advertising, industrial enterprises, transportation, education system, auction houses and other public places, industrial enterprise management.

LED display is widely attention and got rapid development, with it itself has the advantages of the inseparable.It features: high brightness, miniaturization, long service life, low work voltage, low consumption, stable performance and impact resistance.LED display screen colorful, stereo sense is strong, static, such as oil paintings, such as movies, LED development prospect is very broad, is toward the higher brightness, higher resistance to climate, higher luminous density, higher luminescence uniformity, reliability, full color direction.

But the LCD splicing screen display unit USES stitching way, by joining together control software system, to realize the large screen display a splicing screen.The common way of joining together with 5.3 MM 55 inch ultra narrow side of the LCD splicing, 6.7 MM 46 inch ultra narrow side of the LCD splicing screen, 47 inch LCD splicing, 60 inch LCD splicing wall and 40 inch LCD splicing system narrow side.

Then the LED display screen and LCD splicing, compared to just who is the true king of the screen, concrete analysis from the following several aspects we can be clear at a glance.1. The service life of the LED longer than the life of the LCD.2. Refresh rate LED the refresh rate is higher than LCD, rapid response speed.3. In terms of energy consumption of the LED is much lower than LCD, so use LED environmental protection better.4. Brightness: LED color is more pure than, have a wide color gamut, brightness is higher, also can increase the Angle of screen.5. Viewing distance: LCD for a closer look at, but at the moment the LED pixel pitch has to be 2 mm, a closer look at also is not a problem.

If you have interest of led screen, welcome to contact me

LED advertising screen phenomenon of water ripple

LEDadvertising screen phenomenon of water ripple

In daily life, when we see beautiful pictures on TV, often pick up the phone to record down, and at this point, the photo flash tend to appear on the water ripples and scan lines. In can also bring gorgeous pictures of LED advertising screen before the photos, also can appear ripples and scan lines, there are some customers doubt about the quality of the LED advertising screen. Below small make up detailed analysis to the customer in the heart of doubt, the picture of water ripple and scan lines are not LED advertising screen caused by quality problems, but because when you take a photo in mobile phone, camera Angle and focal length.

First. Concept of water ripple

"Water ripple" also called "Moore lines," Moore grain is a kind of expression of the principle of beat. Mathematically speaking, the superposition of the continuous sine wave frequency close to two synthetic signal amplitude will change according to the difference between the two frequencies.

Second: appearance of MOORE LINES

Two slightly different spatial frequency stripe, they left black line position, due to different interval with, to the right gradually refreshed line can't overlap.The results of the two overlapping stripes, on the left because of the black line overlap, so I can see the white line.And right dislocation, white line on the black line, overlapping the outcome become all black.Have the change of the white line and all black, comprise the mole.

Third: appearance of led advertising screen moore lines

If LED advertising screen pixel distribution density between the camera can distinguish between the case, then will can decipher the part identification results, but because of LED advertising screen can't identify the ash terrace zone, a combination of both will form the regularity of the grain, response is periodic ripples on the vision.

Forth: how to delete Moore Lines

1, change the camera position. By around or move up and down, can reduce the ripple Moore.

2, change focus. Hd LED advertising screen due to the focus of the image clearly and height details may cause Moore corrugated production, slightly adjust the camera focus to change resolution, and thus help eliminate Moore.

3, change the camera Angle. Moore corrugated, due to camera fixed Angle will be slightly adjust the Angle of the camera, is a good way to slow Moore lines.

4, use mirror filter installed directly in front of the camera lens, make its exposure conditions satisfy the spatial frequency, high spatial frequency part thoroughly filtered image, opportunities for decreasing the occurrence of Moore's grain, but it will also be synchronous reduce the sharpness of the image.

5, change the lens focal length. Can use different lenses or adjust the focal length, to change or remove Moore.

If you have interest, you can send me e-mail

Application of wireless LED display screen

Application of wireless LED display screen

Wireless LED display screen is a kind of brand-new information media information, once launched, it is widely accepted social group, the "flow" display and the characteristics of the network information release more advertising, become a kind of new advertising media.

According to the use of technology can be divided into the WLAN, GRPS (WCDMA), and other wireless communications:

1.    Such as buildings, plant, streets, inconvenient or wiring

SuchLED displays is area of medium full-color displays, more need to release information in real time. For such display, if the condition allows, the wireless LED display we recommend using WLAN communication methods in the first place. This is because, compared with the GRPS communication way, WLAN need only wireless network card can be realized. Late cost is very low, and requires no additional traffic fees.

2.    Multiple in different location of the LED display, need to unified management, centralized, and the wiring is not convenient:

This application found in schools, institutions, government departments, streets, etc., such as Shanghai sea the LED display on both sides of the street, each separated by about 10 meters have an LED display screen, the whole street several hundred yuan display, unified management.This kind of display because of far distance control center, this kind of LED display for using the GPRS wireless communication way.

3.    Mobile LED display

The most typical application is vehicle display, especially the LED display on the taxi.Due to the LED display has been with the moving of the car and mobile, combined with the need to focus on management, wiring is unlikely.This kind of LED display need to adopt the GPRS wireless communication way.

Wireless WLAN LED display by using more for synchronous control system, the mode of GPRS is given priority to with asynchronous control system.

Basic knowledge of Stage led screen

Big stage led screen can divide one picture into multiple video picture. The led screens were independent, and can be any combination.

Broadcast related background, big screen can realize area display according to performance requirements, and can realize superimposing. And can be realized by superposition, background images according to the same picture with video signal processor played or synthesis, can be shown on the characterization, play, or call waiting to do text scrolling playing, can level video picture screen, also can lift up and down into words, personality video images, lighting, landscaping stage background and stage ground, through the software design and control system meet the demands of the other, advantage, can adopt frame structure design, tear open outfit is convenient, reliable, easy to maintain application occasions to major entertainment and large activities.

Stage LED large screen segment

1.    The main screen: generally speaking, the largest of the set in the middle of the stage background LED large screen can be said as the main screen, the vast majority of cases, it is a square, can be a square, or rectangular. Due to the home screen display of the content is more important, so it is to compare the imaging effect of good, also require relatively large pixel density. The home screen is mainly the technology more mature stage P4, P5, P6.

2.    secondary screen: vice screen is usually set up on either side of the home screen, foil is used for the contents of the home screen play, so it plays most of the content is more abstract, such as dancing fireworks, flashing box and so on. Therefore, vice screen pixel pitch will be bigger, generally USES the P7.62, P8, etc. Because many parts are the contents of the screen and play with mesh, also known as color screens.

3.    Video expansion screen: general concerts, large stage performances will be relatively large area, causing some places are not clear on the stage performance, the sides will be placed on the big screen, to live on the scene of the stage, the screen can be called a video to expand, the specification is often similar to the home screen.

In some KTV, bars, dance halls and other places will also be used in the stage of some shapes led large screen, the abnormity of led large screen is often based on the overall structure of the environment, places in led large screen transformation, on the basis of their specifications can be customized according to the actual situation, make modelling more changeable, let the place environment to a new level, give a person a kind of the feeling of dreaming.

LED SHARK Encapsulation

Shark LED, is one type of encapsulation mode, square shape, transparent resin encapsulation, four pins, there is a lack food led in cathode.

Shark are defused LED, lighter angle is greater than 120 degree, with high luminous intensity, and can bear larger power. Because of its superiority display performance, was introduce to LED encapsulation by some companies.

Advantages of these kind led screen encapsulation:

Shark series display, is a 3in1 DIP lamp, which is between traditional DIP and indoor SMD tech. compared with traditional outdoor screen made of 246, 346 lamp, the brightness of the SHARK series 5353 is high, white balance consistency is wonderful, big Angle of view, red, green and blue wick droop synchronization, gold wire, low failure rate characteristics, these are piranhas series one of the biggest bright spot. Completed by piranhas 5353 full-color displays more than outdoor protection grade reaches IP65, from is/side look, eliminating 246, 346, 546, lights, have not been able to solve the phenomenon such as "flower screen spots". Cooling is more superior to the outdoor 3528, 5050 and commonly used table lamp beads made of stick a triad. According to industry insiders said, outdoor triad has been inserted in the light of market prospect than traditional into the lamp and table is more significant.

Application:

Now Shark LED get more and more attention, because it better than f 5 mm LED to heat dissipation, large Angle, light failure is small, long service life. SHARKS are well suited for line lamp, back light box and large font of light source.

Because line bar lamp is generally used as the city high-rise buildings, and the back light boxes advertising screen and large font lights are placed high up, if the LED is not bright or dim, its maintenance is difficult. Compared with f5mm led lamp, Shark led with well heat dissipation, its light failure is small, long service life, so use of time is longer, also can save considerable maintenance costs.

Solution of all kinds of broken led screen

Outdoor advertising led screen

Defective pixel is the most common problem of LED screen, which means black points appeared during the working of the led screen. Other problem include whole screen can’t work, parts of led screen is not bright, whole screen crash, parts crash, Totalise etc. now aimed at these problems, simple introduce the solutions:

1.    Output problem

(1)  Check whether the line of the output interface to the signal output IC connection or short circuit

(2)  Check whether Clock latch signal output is normal

(3)  Check whether the last driver IC output data between the mouth is connected to the output interface of data port or short circuit.

(4)  Check whether the output signal is mutually short circuit or short circuit to ground

(5)  Check whether the output flat cable is well

2.    whole screen bright but one line or few line do not bright

Detection the circuit between 138 and 4953, and tell whether it is circuit break, virtual welding or short circuit. 

3.    Whole screen do not bright

(1)  Check whether the power supply and signal lines connect well

(2)  Check whether the test card is identified interface，Red light flashing does not identify test card, check whether the lamp panel is power supply with test card, or light board interface has signal and short circuit identification interface

4. Oblique scan, a regular interlaced not bright, show scenes overlap

(1) Check A, B, C, D, if there is A disconnect between signal input port to 245 or virtual welding, short circuit.

(2) Test 245 corresponding outputs A, B, C, D and whether or virtual welding, open circuits between 138.

(3) Test A, B, C, D between each signal is short circuit or A signal with A short circuit

5．Display disorder, the output signal to the next piece of board is normal

 Test 245 corresponds to the STB latched output connected to the driver IC latch end whether or signal is short circuit to the other line.

6.    whole screen bright, have one row or few rows do not birght

On the module control pin in the column, whether measured and drive IC (74 hc595 are needed/TB62726) output terminal connection.

7.    A single point or single highlighting, or the entire line highlighting, and is not controlled

 (1) Check whether the column with the power to short circuit

 (2) to test whether the line show circuit with positive of the power

 (3) replace the drive IC

8.    display disorder, output unnormal 

(1)    Testing the clock CLK latch STB signal is short circuit

(2)    Testing the clock signal is short circuit to the other line

9.    display lack of color

(1) Check whether the data end of the 245 of the color with input and output

(2) Test the color data signal is short circuit to the other line

(3) Detecting the color of the driver IC level even data between whether there is open circuit or short circuit, virtual welding

10. Screen dithering, have stripes

Check the connection of computer common ground wire is loose, or whether the communication cable is loose. If the operator cannot determine the cause of the problem, or the computer is not very understand, don't open the case, can be dealt with again after contact with the LED display manufacturer. 

In summer, how to choose radiating facility for LED screen

Outdoor led display screen

In summer with high temperature, people not only need to beat the measures are taken, as the most popular outdoor display devices, LED display also need cooling purposes to work properly.So, how can we choose cooling equipment for LED display? Due to the LED display installation area, area size is different, different installation way also is not the same, choose the equipment according to the actual situation and decide, specific plan is as follows:

1．If your screen size is within 20sqm

We suggest you do not use air conditioner, if possible, just need use two drought fan.

2. If your screen size beyond 20sqm

A.  If you display installation location is near the wall, just to look at the screen can stick out, if can protrude metope one meter position, suggest you choose fan according to the size, the fan is installed in the upper part of the side of the screen, in turn, displaces, if you buy the screen for 80 square ph16 outdoor led fullcolor, that means you buy fan to 6 units of around 600 mm diameter axial flow fan, the fan is the extraction of the outside, and the cooling fan to ensure that there is network, in order to prevent the technical personnel in the maintenance of maintenance screen display when other things sucked through the clothes according to personal injury, in order to waterproof, aluminous model board without the fan outlet on the aluminum alloy blinds.

Hang a wall display screen can also be installed air conditioning, make sure air conditioning host a placement, does not affect the overall appearance of of wall.The choice of air conditioning is required, one of the most commonly used is 1.5 P, 2 P and 3 P air conditioning, the most northern city of 12 square 1 P air conditioning calculation;The southern city of 9 square 1 p air conditioning is calculated. If the area of outdoor led display screen is bigger, air conditioning will go to the factory directly, if go to the store to buy the area is not large, but there are calls compensation function displays the cooling air conditioning.

B. If the LED display installation way is the pillar, the best fan is used to heat, fan installed on the big screen on the back of aluminum-plastic plate, best to up, so that when it rains in the form of rain of make it shutter not into the screen inside, if is a double column, will in the intermediate position of the double column several shutter, arranges the window is the air inlet, the above is the vent fan, so form a complete air convection makes the effect of heat dispelling better.
    If required by you to install air conditioning, this is no problem, to increase the purchase cost and use cost, the cooling effect will be worse than the fan.There is a problem if you want to install air conditioning, must want to consider a problem is the machine in what place, it is hung on columns or hanging on the back, whether it can ensure the beautiful appearance.