Archive for category: News

P8 outdoor surface mount SMD3535 full color LED display project case

Introduction and characteristics of outdoor P8 full-color LED display

Creuview uses high-quality red, green, and blue chips to be packaged in a three-in-one surface mount lamp bead. A three-in-one surface mount lamp bead is a full-color pixel. The surface mount lamp beads are evenly attached to the front of the circuit board at a certain interval and fixed by soldering

The lamp surface of the module is filled with waterproof glue, the back of the circuit board is affixed with electronic components such as driving and control, and then the finished circuit board is fixed and protected with a plastic kit. This is the basic display unit of the outdoor full-color LED display, referred to as the LED module. Multiple modules and waterproof rubber rings are assembled into a single LED box, and multiple boxes are assembled into a seamless LED large screen. The large screen needs to be equipped with a driving power supply and a control system before it can be used.

High display brightness: the brightness can reach more than 8000cd/㎡, so far no outdoor display product can surpass it, and the brightness of the LED display can be automatically adjusted according to the intensity of the ambient light, and the picture quality is clear and bright

Good display effect: Non-linear correction technology makes the image delicate, saturated color, strong sense of layering, smooth and vivid

High resolution: With the continuous breakthrough of outdoor small spacing, coupled with the larger outdoor screen area, the overall screen resolution has reached a higher level, which can more express high-definition picture quality and rich colors

High protection level: waterproof and dustproof design, protection level up to IP65, the selected materials are resistant to ultraviolet rays, deformation, aging, high and low temperature.

Good uniformity: The wavelength deviation can be controlled within ± 2nm, the chromaticity and brightness consistency can reach 99%, the flatness is ± 0.1mm, and the seam gap is less than 0.2mm, so that the color uniformity and consistency are excellent

Convenient operation: It is controlled by commonly used computer operating system and general playback software, easy to learn and understand, and the playback content and sequence can be edited at will

Ultra-long life: LED lamp beads can last up to 100,000 hours. High-quality light-emitting components are the core material of the display. The circuit board design is optimized to fundamentally ensure the life of the product.

Energy saving and environmental protection: LED display light-emitting materials are energy-saving products, equipped with constant current drive energy-saving IC and high conversion rate drive power, and the brightness can be automatically adjusted

Wide viewing angle: large-angle design, high-precision equipment and high-precision production technology, making the horizontal and vertical viewing angles wider

Stable performance: Unique anti-electromagnetic wave processing, distributed scanning technology, and modular design make the reliability and stability higher.

Wide playback content: It can display text, tables, images, animations, videos, etc., equipped with power amplifier and audio to synchronize the picture and sound, equipped with a TV box to rebroadcast TV programs, and equipped with a video processor to achieve live broadcasting

Multiple control methods: equipped with different control systems, which can realize synchronous control, asynchronous control, wireless control, network control, and remote control

Various shapes: rectangles, squares, arcs, circles and other customized designs can be made

Convenient maintenance: Modular design is adopted to make maintenance and replacement of spare parts convenient and quick.

P2.5 Full Color LED Display HD Small Pitch Project Case

Recently, there was good news. The P2.5 full-color LED display produced by CREUVIEW and installed in Xi’an Chanba Ecological Park was completed. The expert’s acceptance was fully qualified and passed smoothly. The user is very satisfied and gave CREUVIEW’s high-definition LED display. It is highly recognized.

   Among them, not only our products are praised, but also the vigorous and dedicated work style of the engineers and technicians shocked the customers. The customer of this project has been hesitant in the procurement comparison process. The poster customer sent someone to visit the company’s production scale and strength and product quality before signing the procurement contract. This resulted in a very tight construction period. When I arrived, I rushed to the project site and worked overtime all night to install and debug, which was completed one day earlier than the scheduled construction period. The customer was impressed by CREUVIEW’s engineering services.

 P2.5 high-definition small-pitch LED full-color display, produced with imported brand chips, high-brush driver IC, and special anti-shadow circuit design. Effectively eliminate moiré, wide color temperature adjustment, low brightness and high gray effect, high refresh rate, non-reflective, ultra-high resolution, realistic color reproduction, seamless vision, nanosecond response speed, low power consumption, ultra-quiet And other advantages. Widely used in electric power, civil air defense, transportation, radio and television, public safety, conference rooms, water conservancy and water affairs, tobacco and other industries: indoor control rooms, large conference centers, security monitoring, production emergency command, large-scale performances, competitions, radio and television industry background walls , Commercial brand display, public information display, etc.

Outdoor full-color LED display lightning protection treatment

1.Protection against direct lightning strikes: Install lightning rods on the support structure of the LED display (outdoor), indoor LED displays or LED displays with tall buildings next to them, you do not need to consider installing lightning rods.

2.For the counterattack of the steel structure, connect the rigid structure to the housing of the LED display screen, equipotentially, and ground. The grounding resistance is generally required to be less than 10 ohms. If the resistance does not meet the requirements, additional The artificial grounding grid. The lightning arrester should also be well grounded.

3. For the lightning current induced on the power line, install a single-phase or three-phase power surge protector on the power line. The cross-sectional area of ​​the link wire of the phase wire cannot be less than 10mm square, and the cross-sectional area of ​​the ground wire can not be less than 16mm square.

4.For the lightning current induced on the signal line, install a signal lightning protection device on the signal line. The signal lightning arrester is determined according to the signal interface of the system. If it is a network cable, install a network signal lightning protection device, and install a DB9 interface lightning protection device for the serial interface. The cross-sectional area of ​​the ground wire cannot be less than 1.5mm square.

5.For the induced current of lightning strikes, a unified dedicated professional distribution box and power distribution cabinet can more comprehensively and effectively protect the entire circuit system from the interference of the lightning induced current.

Outdoor full-color LED display heat dissipation treatment

NO. one, LED display within 20 square meters

   Generally, no air conditioner can be used. If conditions permit, two fans with a diameter of about 500mm can be used, depending on the size of the installation space.

NO. Two, LED display screen with more than 20 square meter

1.If the LED display is installed against the wall and can protrude by one meter from the wall, it is recommended to choose the fan according to the area, and the fan should be installed in sequence above the side of the screen. If you buy an outdoor full-color LED screen with a ph16 of 80 square meters, it means that the fan you buy requires 6 axial fans with a diameter of about 600 mm. Make sure that there is a net inside to prevent the technician repairing the display from sucking in clothes and other things when repairing the display to prevent personal injury. For waterproofing, install the air outlet of the fan on the outside aluminum-plastic panel Aluminum shutters. The wall-mounted LED display screen can also be installed with air conditioners. Ensure that there is enough space for the air conditioner host without affecting the overall appearance of the wall. The choice of air conditioner is required. Generally, 1.5P, 2P and 3P air conditioners are used the most. Northern cities use 12 square meters of 1P air-conditioning calculations; southern cities use 9 square meters of 1P air-conditioning calculations. If the area of ​​the LED outdoor display is relatively large, the air conditioner needs to be customized; if the area is not large, you can buy it at a specialty store, but you need to buy a display cooling air conditioner with call compensation function.

2.If the LED display is installed on a column, a fan can be used to dissipate heat. The fan is installed on the top of the aluminum-plastic panel on the back of the large screen and made into blinds so that rain does not enter the display when it rains. If it is a double-pillar LED display, you can open several blinds in the middle of the double-pillar. This Baiye window is the air inlet, and the fan above is the air outlet, so that complete air convection is formed and the heat dissipation effect is better.

Chaos in competition among full-color LED display manufacturers

Full-color LED display manufacturers say that the industry is not easy to do, in fact, there are many aspects, but the most critical point is the confusion of market prices.

The larger manufacturers are those listed companies, and their energy is devoted to making some small-pitch LED display products. For one thing, the small-pitch products raise the barriers to entry. If you want to produce small-pitch LED displays, then It is necessary to have the material conditions for the production of small spacing. First of all, technically this condition, and the technology also needs the support of machinery and equipment. Some small manufacturers are trapped in not having much capital to purchase equipment, and the profit of small-pitch products can be profitable. To reach the height reached by ordinary products, this is their profit growth point. Some large listed companies will share this cup of pie, and there is not much time to make conventional products.

In addition, some midstream manufacturers have higher prices, but they are relatively low and not much lower than those of listed companies. Some midstream manufacturers have inventory. Listed companies can advance funds to do some projects, but these companies can’t do it. Now that labor costs are rising year by year, some midstream companies have a very difficult time. The increase in raw material costs (the price of raw materials purchased by the month is about 3-5 points higher than the price of raw materials purchased in cash) This has led to the middle and upper reaches of the LED display. The development of the enterprise encounters big problems. If the suppliers come to ask for money together, they will go bankrupt without too much money to advance. Only by raising the price of the product to increase the profit brought by the display product To maintain the difficult development of the enterprise, the price of such a manufacturer is higher.

There are also some manufacturers that specialize in wholesale. Wholesale may be equal to the price. No business man in this society can truly tell you from the heart that I sell this thing to you, and I don’t make a penny. I owe it to you, as long as a businessman tells it to anyone, no one will believe it. The raw materials they use can tell you here, but they only do wholesale and will not care about your after-sales service. Take the ph10 outdoor full-color screen as an example. LED lights are the key to large LED screens. In the cost of raw materials, they account for 50-60% of the cost. Which of the better lights in Shenzhen’s packaging factory has a relatively ordinary price. The price of the packaging factory is 300-800 yuan per square, and the driver IC is even more informative. Nowadays, the most popular in the market is to sell under the brand of a certain brand in Taiwan, but in fact the appearance is used. The same other unbranded ICs have the model of a certain Taiwanese brand written on them. This cost can also be saved. The article on the circuit board is probably the thickness of the wiring inside the circuit board. If the thickness does not meet the requirements, the screen will In the use process, the wires are interrupted. If there are fewer wires on a board, you can fly a few wires out and connect them outside. If there are more, the module is basically scrapped.

There is also the cable. You can take a closer look at all the manufacturers who do wholesale. They are basically copper-clad aluminum cables, and more aluminum cables. This kind of wire will heat up during use. If you don’t believe it, you can try it yourself. Click; there is also the cabinet. If you buy a small display, it doesn’t matter. If you buy a large-screen cabinet, it’s fine. Generally speaking, the thickness of the cabinet should be at least 1.2mm or 1.5mm. The industry uses a 0.8mm box, is it easy to deform? Think for yourself! The quality of the mask and the kit is the most direct thing is the mosaic of the mask, the deformation or even the crack of the kit. The quality of the glue does not have much impact on the price of the LED display. If you install the screen in a foreign project or close to a place with heavy humidity, you want to consider using steel for a mask screw. By the way, the market should not be obsessed with the LED light-emitting diodes of all-chips given by manufacturers, so I won’t say much here. Creuview insists on selecting stable brand materials, reliable product quality and stability to ensure long-term stable use by customers.

Features of stage rental led display box

Light weight: the box size is 576*576mm, the weight of Creuview per square box is only about 24kg, and the single box weighs only about 6.8kg. A single person can carry it with one hand, and the rental led display screen can be used to build a stage to save installation time;

Thin box body: The box body is made of die-cast aluminum, with high strength, strong toughness, high precision, not easy to deform, and its thickness is only 80mm;

The led display body is flat: the surface flatness error is less than 0.2mm, and the picture is clear and delicate without burrs;

Fast disassembly and assembly: the box body is connected with a quick locking mechanism up and down, and the two handles can be turned 90 degrees to lock the two boxes. The installation of one box can be completed in 10s, and the installation accuracy is high. The box splicing and wiring connection are fast and reliable, which is beautiful and beautiful and can be quickly assembled and disassembled in the true sense.

Easy maintenance: modular design, easy installation and disassembly at any position of the assembled screen, and simple maintenance.

Strong compatibility: The new structure design meets the requirements of hoisting and stacking, and meets the requirements of indoor and outdoor. The cabinet is singular, compatible with multiple pitches, and compatible with indoor and outdoor modules.

High refresh and high gray: high gray and high refresh rate design, gray level 16 bit, refresh frequency>960Hz;

Low cost: Excellent heat dissipation design and heat dissipation performance, without external fans, air conditioners, etc., low noise; light weight of the cabinet, low installation costs; low power consumption of the cabinet, saving operating costs.

Full-color LED display 3D technology accelerates to seize the share of LCD screens

Judging from the market’s response in 2013, the application of high-definition indoor full-color LED display is mainly to replace indoor DLP, LCD, projection, etc. The application areas include conference video, security monitoring, command and dispatch center, etc. From the perspective of the entire indoor display industry, the sales of DLP, LCD, projection and small-pitch LED displays in 2013 were about 11 billion, and the indoor display market share in 2014 and 2015 could reach about 15 billion.

  To enter the civilian market, LED TVs need to make further breakthroughs in some technologies and applications. First of all, the problem of the display screen, the current display point of LCD TVs can achieve 0.58, even smaller and 0.4, 0.3. If LEDs are used instead, further breakthroughs in the upstream technology of the display LED industry chain are needed; secondly, application companies are required Further in-depth research and development will be carried out to combine the panel and the cabinet more effectively; in addition, can the combination of the PCB board and the LED panel be separated? If the LED TV fails, only a simple module replacement is required by the maintenance personnel. These are issues that application companies need to make further breakthroughs in the R&D process; again, further reduce prices and gain wider market acceptance. It is worth pointing out that the current comfort problem for direct viewing of LED TVs with human eyes has been solved, which is mainly manifested in the technical indicators of low brightness and high grayscale.

  However, it is worth mentioning that LED displays have made initial breakthroughs in naked-eye 3D display effects. In the future, full-color LED displays will truly achieve high-definition displays. At the same time, with naked-eye 3D high-tech functions, it will be LED indoor One direction of the display’s value-added. The naked eye 3D LED display not only brings shocking display effects to the audience, but also realizes a healthy and comfortable naked eye vision 3D feast. Just imagine, when the audience take off the shackles of traditional 3D glasses and easily enjoy movie theaters and commercial advertisements in public places, the naked-eye 3D LED display will become the focus of the audience.

Asynchronous control scheme and characteristics of led electronic display

The asynchronous graphic control technology of LED electronic display means that the LED screen has the ability of storage and automatic playback. The edited text and non-gray-scale pictures on the PC are transmitted to the LED screen through the serial port or other network interface, and then the LED screen is offline. Automatic playback, generally does not have the ability to display multiple grayscales, mainly used to display text and simple graphic information, and can be connected to multiple screens. The main control PC transmits the information to be displayed and various control commands to the control board in the screen through serial communication. The control board in the screen contains a single-chip microcomputer and memory. The control board in the screen stores the information, and then displays it in accordance with the command. On the screen.

   (1) Main features of asynchronous system

   1. Due to the limitation of content storage space, most of the displayed content is mainly text, pictures, and characters.

  2. Because the principle of the asynchronous system is to store the content to be displayed in the control system in advance, so as to avoid occupying the control computer. Can save costs.

  3. It is mostly used for display screens with a small area that do not need to be changed frequently.

   (2) Points for Attention in Asynchronous Graphic and Text Control Technology

   1. Adapter: The host computer uses the serial port RS232 protocol to go online through the RS232-RS485 adapter, which is an optical isolation type.

  2. Control panel: Receive the information to be displayed and various control commands transmitted by the PC through serial communication. The control panel contains a single-chip microcomputer and memory. The control panel in the screen stores the information, and then displays it on the screen according to the command. Features are as follows:

   1. When the vertical dots are within 128, the horizontal dots can be up to 2000 dots. If the vertical is 16 points, the horizontal can reach 4000 points.

  2. The large-capacity memory supports the first- and second-level Chinese fonts and a large number of proprietary fonts, and the storage capacity is 16 scenes.

  3. It can be controlled by computer or displayed offline.

   4. The information can be stored for 1 year after power failure.

   5. With perpetual calendar real-time clock function.

   (three) single network cable (four cores)

  Using a four-wire system: a pair of differential twisted-pair wires receive, and the other pair of differential twisted-pair wires send. The communication distance is 1200 meters. It adopts a bus-type networking structure, with a maximum of 32 lower-level computers.

   (four) host computer editing and broadcasting software

   Communication screen LED program editing software, in line with LED graphic screen control protocol. It is suitable for editing and broadcasting text and image programs of multiple monochromatic or dual-primary color LED display screens of different lengths and different widths. Send 16 more programs each time.

  (5) LED graphic screen control protocol

   1. This protocol supports dot-matrix single-color, dual-color, graphic and text networked LED displays.

   2. The networking form is bus type, the upper computer is a PC computer, and the lower computer is the single-chip microcomputer in the LED display control board. It adopts four-wire system, and the online protocol is RS485.

   3. The host computer adopts the serial port RS232 protocol to go online through the adapter conversion.

   4. Support TCP/IP protocol transmission.

  Asynchronous system is mainly applied to the display screen with a small area and does not require the display content to be displayed synchronously with the control computer. Such as the dynamic display of various bar screens and small and medium-sized screens, various types of industry users (such as bank announcements, recruitment information releases, product information releases, etc.). Under normal circumstances, single-color or two-color display screens generally use asynchronous control systems.

LED display? New breakthroughs in research on “blue light” damage to the eyes of LED chips

Showa Denko Japan has developed LED chips that can reduce the “blue light” emitted by personal computers and smartphone screens by 95% compared to previous products. Blue light is thought to cause eye fatigue or sleep disturbance, so protective glasses that can prevent blue light from passing through are welcome. Showa Denko plans to realize the commercialization of new LED chips in 2014 and expand the demand for LCD screens and LED lighting.

LED lighting and LCD screens mainly use blue LEDs as light sources. The blue light emitted by the blue LED is considered to be the main reason that may cause the symptoms of dry eyes and difficulty falling asleep.
Showa Denko combined LED chips in three colors of magenta, yellow and dark green to obtain basically the same effect as the blue LED light source. The brightness of the conventional magenta LED cannot be used as a light source for lighting, etc., but Showa Denko has improved the brightness through its own technology.

Since blue LEDs are not used, blue light can be reduced by more than 95%. It is said that although the price is relatively high, reaching 2 to 3 times that of blue LEDs, when used in products such as lighting and liquid crystal displays, the price of the product itself is expected to increase only by 20 to 30%.

Showa Denko has also been producing LED chips before, but not blue LEDs. The company hopes to use new LED chips as substitutes to explore market demand. It plans to use the existing facilities of the Chichibu Office in Chichibu City, Saitama Prefecture for production. In addition to LCD screens, it is also expected to be used for lighting in offices and desks.

Copyright © CREUVIEW GROUP(HONGKONG)CO.,LIMITED All Rights Reserved Sitemap