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LED display quotes and budgetary assessments 14 strokes


Are you planning to buy LED display? Are you worrying about the costs? With years of experience, HSTV will provide you some detailed costs of LED display for your reference. Here we go!


1. Display Screen Cost: Generally, how much is one square meter,i.e.,xxx USD/ ㎡? Price is different as the different material and screen module. Screen quotes include the whole set components that colored LED desired: die, module circuit board, IC driver chips, module power supply, steel cabinet and plastic masks and all the internal cables and so on.

2.Control system costs: that is display sending card and receiving card costs , Generally, one screen just need one piece sending card, which is installed in host computer. But the number of receiving cards is decided by screen size. In general, the larger area, the higher density that the screen is, the more receiving cards need to be used.

3.Computer for controlling: It’s the necessary equipment to control LED display. Computer configuration requirements: dual-core CPU, 2G memory, 512M or more discrete graphics, motherboards should have PCI slot.

4.Sound + Amplifier:The devices that allows screen synchronized video to emit sound, usually with 1 amplifier, 2 stereo.

5.Distribution cabinet: Small size LED display needn’t it; the recommended maximum power 10KW or more of display to use. It will provide stable voltage and current for each part of the device, effectively prevent the switch trip and other problem.

6.Cooling equipment: outdoor LED display more than 20㎡ must be configured air conditioning by the manufacturer to ensure the normal operation and prolong the life of each components of the display screen. Generally, indoor screen or small size screen needn’t it; large indoor display is strongly recommended with a wall-mounted air conditioner which is effectively cooling, ensuring the normally running in high temperature, reducing the failure rate.

7.Mufti-functional Card: the main role are smartly regulate the brightness and temperature and other values of full color LED screen so as to achieve energy saving and extend the life of led display; Indoor display may not be used.

8.Arrester: Used in outdoor LED display,primarily used for lightning protection; Indoor display may not be used.

9.Video Capture Card: TV card, a small card installed in the computer, coupled with the appropriate driver software that allows the display simultaneously broadcast cable channel program. Users can choose by themselves if needed. It’s inexpensive.

10.LED Video Processor: mainly to improve the whole display effect and function of the application of large-screen, fully tap the value of the display. To solve a variety of video signal access, process, and display problems,to complete signal format conversion between different formats.There are different brand and model number of LED video processor, the prices are also varies.

11.LED playback software: including computer system software, LED video playback software. They are generally provided free of charge.

12.Steel structure, Manual installation: The bracket for fixing and installing the display is usually with steel frame structure, and aluminum plate or stainless steel edging material. Labor cost of installation is included(suggestion: ask the manufacturer to provide free steel structure design drawings, look for local producers to make the bracket. It’s simple to produce that the average worker can complete it. Cost less and easy to install)

13.Shipment: It is depending on the  transport distance. Shipping also can be handled by themselves.

14.Technician fee: Sometimes when screen is shipped to the customers, the manufacture would send 1-2 engineers to guide the installation, commissioning on-site. Generally, customers simply responsible for general expenses and travel expenses accommodation of the technical engineers.

The above are costs summary about LED display from HSTV. For more details, feel free to visit our website http://www.optokingdom.com/ or send inquiry to our sales. We are always here for you!

How to choose the module when customize LED display?

When receiving the new questions from customers regarding how to select the most suitable module for the actual usage, HSTV would give the most professional reply and suggestion for the customer’ s finial selection. As we all know, the LED display have five different kinds of LED modules, there also exist their own advantages and disadvantages among different modules, so when customize the LED display, the customer should learn the characteristics of LED modules for ahead, then make the selection according to the actual application and site conditions. Below let’ s together get to know kinds of LED display module.

According to the craft difference of the LED screen surface treatment, we can divide into Plug-in Module, Surface Mounting Module, and Semi-SMD Module, Three-in-One SMD Module, Three and One SMD Module.

Plug-in Module

Refers to when DIP encapsulation, the lamp tripod  get through PCB board, the tin is tanked into the lamp hole through welding, thus the LED module through the craft is Inserting-lamp module, with the advantage of large-angle, high brightness, nice heat-emitting and the disadvantage of small pixel density.

Surface Mounting Module

That’s also named SMT, means the lamp of SMT encapsulation  is welded onto the surface of PCB board through welding technology, and the lamp tripod no need to get through PCB board, with the advantage of large-angle, soft displaying image and large pixel density specially for the indoor usage, also with the disadvantage of low brightness and not enough heat dissipation for the tube itself.

outdoor Full Color LED Display

Semi-SMD Module

Refers to a product between DIP and SMT, with the same surface encapsulation of LED light with SMT, but its positive and negative level pins are the same with DIP, also are finished welding through getting through PCB board, with the advantage of high brightness, good displaying effects and the disadvantage of complicated craft and repair difficulty.

Three-in-One SMD Module

Refer to the LED chips of Red, green, blue three colors encapsulated into the same colloid, with the advantage of easy production, good displaying effects and disadvantage of light-splitting and color-separation difficulty, also high cost.

Three and One SMD Module

Refers to that the SMT lights of Red, Green, Blue three kinds independently encapsulation are vertically coordinated together according to the certain distance, thus combining the all advantages of Three-in-One SMD also solving the disadvantages of Three-in-One SMD.

As one of the LED industry leaders, HSTV is definitely pursuing continuous improvement and is proud of its superior brand service and qualified LED display and modules, if you have keen interest in the LED products, welcome to visit our website.

The reasons why you use led display

LED Displays are a better way to communicate with your customers, staff, students, guests, visitors, anyone! Discover how the POWER of LED’s can increase your bottom line. LED displays will help increase your profits, increase your sales, give your business a professional image and increase customer satisfaction. LED displays require virtually no maintenance, have extremely low energy consumption and feature attention-getting colors.

LED signs have become the advertising and promotion choice of business owners everywhere, such as bank and financial institutions, automotive sales and service, self storage, restaurants, general Retail, schools, church, government military, lean manufacturing, material handling, transportation, rail and transit, airports, sports and entertainment, theaters and cinemas.

LED displays attract potential customers passing your premises and they inform customers who have entered your site.LED displays can be updated instantaneously to inform your customers, staff, students, guests and visitors of recent changes. Let your students know that a class has been moved or has been canceled. Direct incoming visitors to the vacant sections of your parking lot. Direct your hotel guests to the locations of their specific conferences.

HSTV can provide you with an outdoor or indoor display to meet your needs, with the software and interface to operate the display and train your staff to use it effectively.

HSTV products include indoor and outdoor rental led display, fix mounted led display, led signage, led advertising player and so on, you are welcome to send us inquiries.

A brief introduction to led display products.

Led display is becoming common in our daily life, but still there are large groups of users don’t have essentially understanding of led display, HSTV makes the brief led display introduction to help clients:
LED means Light Emitting Diode:
Light emitting diodes emit visible light when electricity is applied. Traditionally LED is created from two semiconductors. By running current in one direction across the semiconductor the LED emits light of a particular frequency (i.e. of a particular color) depending on the physical characteristics of the semiconductor used. The semiconductor is covered with a piece of plastic that focuses the light and increases its brightness. These semiconductors are very durable, they contain no filament, require little power, are very bright and have a long life.

What is a programmable LED display sign?
Programmable LED displays are connected to a computer by cable, modem or via Ethernet. It is also possible to program an LED display sign by means of its own programming keyboard. ALPHA LED displays normally have both options. It is generally simpler and more efficient to program by means of a computer. Software designed especially for programming ALPHA LED displays is available. Most LED Displays are equipped with backup batteries to protect the data in the event of a power outage.

What is the difference between a full matrix and character matrix sign?
On a full matrix sign, there are no spaces between the individual LED cubes. Each cube is directly adjacent to the cubes around it. This makes the sign look like a solid wall of LED pixels, which allows both text and graphics to be displayed. On a character matrix sign, spaces exist between the individual LED cubes, so only text can be displayed.
What is the difference between an indoor and an outdoor sign?
Indoor signs have smaller characters than outdoor signs, because the viewing distance is much shorter. Indoor signs do not have to be as bright as outdoor signs, because they do not have to be viewed in bright daylight. Outdoor signs are manufactured to withstand outdoor conditions of direct sunlight, and large temperature variations, rain, snow and dust.

An outdoor led display accident

There was a strong thunderstorm in Weifang City on June 30 2016, the thunderstorm caused an accident to Weifang Olympic Oktoberfest that the makeshift lighthouse and led display truss got collapsed.


It’s said that the stage lighting and sound items are the center decoration for the Weifang Olympic Oktoberfest, all the devices are imported top-level audio and lighting equipment. However the gorgeous decor did not escape the storm because the stage rental display truss is not stable enough for storm resistance.


Because the rental led display cabinets are light weight, thin, not easily deformed and can be quickly installed, it is widely used for arena, wedding, events and other places. But we should keep in mind the potential security risks and problems when building screens truss. In order to avoid such accidents, HSTV suggests clients build suitable led display stage from the following two basic aspects:

First is to choose led cabinet which is light weight and easy to be assembled and disassembled, such as the carbon fiber, magnesium alloy, the unique nano-polymer materials and other new materials can significantly reduce the rental display weight and thickness. These cabinets are good for display quick installation and maintenance and reduce the burden for stage truss so as to increase the security.
Second is to select a regular construction project team to build the stage truss. They can make sure reasonable steel structure building and avoid the potential security problems due to wind and other external factors.

why use led display for advertising ?

Along with the technology developing, led display screens are widely used in different places. The high efficiency advertising benefits you a lot. HSTV summarizes the reasons as below:

1. Led display screen make your idea come to life. Led display screen can play video. More contents can be show on the screen. Video can is easy to draw people’s attention.
2. High brightness can fit any circumstance even under high ambient light conditions. It can ensure people watch the advertising comfortable.
3. High definition make image vivid and lively. High definition guarantees the contents can reach the effect as you design. Show every single detail of your advertising.
4. Wide viewing angle makes your advertising reach everywhere. Large display screen can attract more people. Wide viewing angle sends advertising in the front of audiences even in distance.
5. You may worry about the quality of outdoor led display screen. IP65 waterproof and dust proof protect led display out of water and dust. All outdoor weather available.
6. Long life span guarantees high quality.
7. Safety. Led light safer than liquid crystal. It won’t explode by itself. And lifetime up to 100000 hours.
8. Suitable for outdoor environment. Such as highway, school, square, station and hotel.
9. Good appearance. Elegant exterior design fit noble places.
10.Transparent price all in optokingdom.com. Low price led display screens sale online.

Led display applications in sport stadium

The European Cup was officially began in Paris, France at three o’clock Beijing time on June 11. European Cup was held in ten cities of France, the 24 European strong teams and 51 matches ignited millions of passionate fans. It’s quite sensibly that such a wonderful event can’t leave led display. HSTV summarizes the following applications for led display in sport stadium:

High refresh full color big LED screen: it is used for highlighting the stadium live broadcast or wonderful slow-motion replay and so on.

LED perimeter display: it’s not only used for playing any length bar advertising, but also used for information dissemination.

Bucket-type led display: it’s one of the most common led displays for sports stadium applications, can be used for sports live broadcast, wonderful shot replay, commercial advertising broadcasting, as well as a timing and scoring classification.

Timing and scoring LED screen: it is connected to the game timing and scoring system to display the players’ game scores and related information. from the sense of a game, it is very important and necessary because general sport events are inseparable from the timing and scoring LED screen.

The ten possible reasons for LED drive failure

Basically speaking the core function of LED drive is to transfer the input AC voltage source into output current source which follows Vf forward voltage drop changes. As the key component for LED display products, LED drive quality will directly affect the display reliability and stability. HSTV based on related technologies and applications, lists the to possible reasons for LED drive failure:

1. Ignore the LED lamp Vf variation range and result led lamps low efficiency and even unstable performance.
2. Ignore the power margin and derating requirement.
3. Have poor knowledge about LED display operation characteristics.
4. Unauthorized use of coupling voltage regulator for LED drive power supply during testing
5. Don’t use specified electric loading for LED drive testing
6. Following situation will result in LED drive damage:
AC is connected to LED drive DC output interface caused LED drive failure;
AC is connected to DC/DC drive input or output interface caused LED drive failure;
Constant current output is connected to adjustable light received caused LED drive failure;
The phase line is connected to ground caused LED drive has no output.
7. Outdoor projects usually use three phase four wire system, wrong phase connection results LED drive failure.
8. Grid fluctuation range beyond reasonable margin caused LED drive failure.
9. Frequent tripping circuit caused LED drive failure.
10 poor heat emission caused LED drive failure.

Readers are welcome to follow our technical articles on www.optokingdom.com to learn the detailed explanations for each of the reasons.

LED Display failure and solutions

The LED display will occasionally gets in failure, HSTV analyzes the reason and gives suggestions as below:
A. Output in question
1, the detection output interface to the signal output of the IC is connected or short circuit.
2, the detection output latch clock signal is normal.
3. The last driver to detect whether data cascaded output data interface port and output port connection between IC or short circuit.
4, the output signal if there is mutual short-circuit or shorted to ground.
5, check the output of the cable is good.
B. When all bright a line or lines does not shine
1, the detection circuit 138-4953 Weld between whether open or short circuit.
C. The entire board is not bright
1. Check the power supply and signal cable is connected.
2, check whether the test card to identify the interface, the test card is not recognized by the flashing red light, check whether the lamp board test card with power, or in light board interfaces have signal and ground lead to a short circuit can not recognize the interface. (Intelligent Test Card)
3, detecting the presence or absence 74HC245 Weld short circuit, if the 245 corresponding enable (EN) signal input and output pin Weld or shorted to other lines.
NOTE: The main check the power and enable (EN) signals.
D. When point oblique scanning, regular interlaced display overlapping does not shine
1. Check the A, B, C, D signal input port to have a break or whether Weld, short-circuiting between the 245.
2, detection A, B, C, D output terminal between 138 and 245 corresponding to the open circuit or cold solder joint, shorted.
3, if a short circuit or a short circuit between the signal and ground detection A, B, C, D each signal.
NOTE: The main line signal detection ABCD.
E. Show confusion, but the output signal is normal under one board
1, detected 245 corresponding STB latch side latch output terminal of the drive IC is connected or the signal is shorted to other lines.
F. When there is a full light does not shine or a few columns
1. Find the column control pin on the module, measuring whether the driver IC (74HC595 / TB62726 ,,,) connected to the output.
G. A single point or single highlight, or the entire line is highlighted, and not controlled
1, check whether the column is short-circuited and the power ground.
2, testing whether the line short-circuit the positive supply voltage.
3, to replace its driver IC.
H. Show confusion, the output is not normal
1, the detection clock signal CLK STB latch short circuit.
2, testing whether there is a clock CLK 245 input and output.
3, the detection clock signal is shorted to other lines.
Note: The main clock and latch signal detection.
I. Display lack of color
1, 245 detect the color data end if there is input and output.
2, testing the color data signal is shorted to other lines.
3, whether there are open or shorted, Weld-level data to detect even the color of the mouth between the driver IC.
Note: You can use the voltage detection method is easier to find the problem, test the voltage data port is different than normal, identify the problem areas.
J. There are single-point or multi-point full on (no law) does not shine
1, to find whether the module corresponds to the Bank’s short-circuit measurement and control pin.
2, the replacement module or a single lamp.
K. When the scanning line, two lines or lines (usually a multiple of 2, there is regularity) simultaneously lighting
1, if a short circuit is detected between A, B, C, D of each signal.
2, testing whether the 4953 output with other output short circuit.

how to distingusih the led display quality?

Led display products is getting more and more popular for modern life, how to distingusih the led display quality? HSTV listed the following methods:

1. Flatness
Surface flatness of the display should be within ± 1mm, so as to ensure the display image is not distorted. Partial raised or recessed will lead to the display viewing angle appears dead. The quality of flatness is determined mainly by the production process.

2. Brightness and viewing angle
Indoor full color screen brightness should be 800cd / m2 or more, outdoor full color screen brightness should be 6000cd / m2 or more, so as to ensure the normal operation of the display, otherwise the displayed image can’t be seen due to low brightness.

3. The balance effect
White balance is one of the most important indicators of the display. Red, green and blue color science should take in the ratio of 1: 4.6: 0.16 in this way pure white is possible, if the actual proportion of any deviation occurs, the white balance bias. White balance is mainly determined by the quality of the display control system

4.The color reduction
Color reduction refers to the color display of color reduction. Display height should be consistent with the color of the playback source, so as to ensure realistic images.

5. Have mosaics, dead phenomenon
Mosaic refers to appears on the display lit or normally black small four-square, both modules necrosis, connector quality mainly used for the display, but off.
Dead point is steady appear on the display or normally black single point, how good or bad from the die to determine the dead point.

6. Have color
Color refers to the existence of obvious color difference between adjacent modules, transition colors in module units, the color phenomenon is mainly caused by the control system is poor, the gray level is not high, low scanning frequency caused.