LED Lighting,LED Display,LED Tube

February 13th, 2011

LED video screens are no longer rare

Comments Off, LED Display, by led.

True sense of the LED Display (Light Emitting Diode) is what we often say that light-emitting diode, which is a solid state semiconductor device that can direct the power into light. LED big screen through the light-emitting diode (ie LED) matrix array, controlled by light to demonstrate different video or text, the collection of the photonics technology, computer technology, network communication technology, image processing, embedded control technology is equal to one. From the practical point of view, their high brightness, removable, strong anti-interference, low voltage, low power consumption, miniaturization, easy to match with the integrated circuit, driving a simple, long life, impact resistance, stable performance.

LED big screen
Figure of LED screens and video categories covering both the text type

LED大屏幕

The current LED text display screen can be divided into classes and the video display category two, the text used in class and more banks, hospitals and other places as instructions issued by text message, the relatively low technical difficulty, the price is relatively low, generally less per square meter ten thousand yuan. The LED video display screen in recent years through the lease, in partnership with the advertising media channels such as also the rapid development, the current domestic large and medium cities in more than 50 square meters can be found basically the LED Tube advertising display screen.

Led Display big screen
LED video screens are no longer rare

LED大屏幕

Most of the current LED’s core technology invented and mastered by the Japanese, LED display on the current international market capacity is expected to an annual growth rate of 30%. Of course, China’s LED industry in recent years has made some achievements, in full color LED display, 256 gray video control technology, cluster wireless control, multi-level group control technology and other aspects of the remarkable performance of the current China LED screens are 90% of domestic production.

Tiananmen Square LED screen
National Day celebrations in Tiananmen Square, a huge Led Display screen

天安门LED屏幕

Tags: Led Tube，Led Display

February 13th, 2011

the importance of timing and scoring system, led display

Comments Off, Led, by led.

Led Display in Nanjing last October held its 10th National Games. This is the first time before the 2008 Beijing Olympic Games the largest domestic sports event. Nanjing, Jiangsu Province have invested a lot of manpower and resources to build a first-class Nanjing Olympic Sports Center. National Games is the level of sports and major sports event of the organizational capacity of the test, the test is for the sports facilities. Various venues in the Olympic Sports Center, using a large number of LED display. Also passed the test, for the 2008 Beijing Olympic venue construction and selection with LED display is also a combat exercise.
LED display has become an essential modern facilities for large stadiums in major sporting events with a large number of LED Displays, in particular, such as the Olympics and other world-class sporting event in the device is indispensable. From its point of use can be divided into two types, one large full-color video screen for live game play at the arena (including the other track) of your scenes, or slow-motion close-up playback and other exciting activities, or is the performance of three-dimensional animated tournament and a tournament such as, in short, is a giant color TV. Olympics and major international events, because a large number of tourists to visit, many people can not go to the racetrack, you can in public places in the city Shuli full-color large screen live on the broadcast arena, so more people can be such as proximity to participation as its territory. However, this does not belong to the scope of venue construction.
The other is the time scoreboard, the game time it is connected to the scoring system, players play the game results and related information from the game sense, the screen time is more important points, some venues can be no video big screen, but can not do without for the time points of the screen. Timing and scoring screen, the key is clear and accurate real-time *, and as far as possible on this basis, more vivid and expressive (such as animation, etc.). Display the main points to text or text with graphics animation display player’s game results, data or other information. Its color can make single color, multicolor, or full color. Text should be in English and their own text, graphics, the main players in the country is to show the flag (the world’s more than 200 countries and regions participating in the banner of diversity, there must be full-color capability to correctly display the flag, if you can not accurately show the , it is better not show, no problem, and some venues for the Athens Olympics with a monochrome, while the previous Olympic Games, and no player on the scoreboard displayed the flag) showing that the animation is applicable to events or highlights, such as broken records, goals and so on.

There is also done commercials for the big screen. For a variety of forms, the most common is around and stand on the stadium big screen. But the Olympics does not allow commercial advertising.

Tags: Led Tube，Led Display

February 12th, 2011

BDO Runda LED technology subsidiary of the introduction of Korea

1 Comment, LED Tube, by led.

Korean LED Lighting manufacturer well-known companies and BDO Runda Epivalley [15.21 2.08%] (002005) subsidiary BDO Hong Kong (Hong Kong) Optoelectronics Technology Co., Ltd. (3E Company) signing ceremony for the transfer of technology. Currently 3E (Wuhu) has incorporated LED epitaxy and chip is mainly engaged in the manufacture of the second quarter of 2011 will be able to achieve high quality, high-brightness LED chip production.
3E Company’s shareholders, including BDO Runda (International) Limited of Hong Kong, South Korea Epivalley Company, Hong Kong Max Alpha Company. BDO Runda (International) Hong Kong Limited BDO Runda (002005), a wholly owned subsidiary.
Under the January 2010 agreement, 3E will receive Korean Epivalley LED Tube manufacturing companies and R & D in terms of comprehensive technology transfer and support; the campaign launched a Korean Epivalley and 3E’s technology transfer, interaction and synchronization of the contractual obligations technology in its implementation. Prior to South Korea Epivalley 3E Company has received part of the technology patent fees and development costs.
Epivalley president Jay Lee said: “Epivalley widely used in the production of LED chips, including Samsung, LG and other multinational companies in the TV backlight source. 3E Company is the introduction of China’s semiconductor lighting LED of the international advanced production technology and intellectual property rights, their LED products exported to Europe in the future international market provides an important safeguard. ”
3E Simon Ro, executive vice president, said, Epivalley the LED chip technology at the international advanced level, after the transfer of technology, 3E LED chip manufacturing companies in the technology will also be synchronized to Epivalley level, the production of LED epitaxy and chip technology will become the highest level, with full intellectual property core technology and LED Display epitaxial wafers and chips.
According to another announcement, a wholly-owned subsidiary of BDO Runda Runda Wuhu BDO Optoelectronics Technology Co., Ltd. received the 2011 allocation of Wuhu city government, “Science and Technology three” financial subsidies to fund 130 million yuan. Bulletin revealed that the subsidy is based in Wuhu, a local subsidiary of Led Display epitaxial wafers, LED chips, LED packaging and LED applications, the whole industry chain of major investment projects, to support its research and development, testing and other aspects of intermediate inputs and Development

Tags: Led Tube，Led Display

February 1st, 2011

LED street light problem has four major points of concern

294 Comments, LED Tube, by led.

In recent years, China’s rapidly growing semiconductor lighting market, in particular, in April 2009 issued by the Ministry of Science and “agreed on launching the” City of ten thousand ten “pilot semiconductor lighting application engineering Reply” file, it is the LED Display in the application of road lighting to a new climax. However, the industry in high-speed development, some problems inevitably occur. Shanghai street before construction management center Wang Xiaoming, Director pointed out that there are too many companies keen on LED lighting technology will be applied to road lighting, whether traditional or non-traditional street lights business enterprises, resulting in the development and production of LED Lighting in the a series of large and small problems and defects. If these problems can not be a good solution, in practical applications, LED lights will encounter more resistance and questioned the objective, including the operation and maintenance of street lights from the management unit. In summary, LED lights enterprises in production and promotion of research and development applications, should focus on four main issues: first, the shape lamp structure. The shape of the traditional street lamps, such as sodium light fixtures, lighting and appliances are generally divided into two parts, specific to each product may vary, but generally speaking, basically similar. However, the special LED light source, the distribution of light in different ways, LED Tube are the shape can be described as great variety, many of them lights can not meet the operation requirements of shape, and even some companies is the standard used in outdoor lights indoors. In addition, LED lamps and also problems connected poles, almost all of the LED lights are fixed to the screw orientation, there is little hoop bolt. Links may be simple to install, so manufacturers of spending a little effort. But for running units, safety is the foundation, lighting lamps connected directly related to safe operation, so the degree of attention to it even more. Followed by the light weight of the problem. Light weight is important, but no such general awareness of LED manufacturers, or did not do too much to consider in this regard. Thermal Considerations for LED lamps, lamp shell relative to traditional lighting, the weight may be more important. However, the weight of heavy operation and maintenance would be some impact. The third part is the lighting problem can be replaced. LED downlight components generally have the power (drive) and the lamp housing several parts. Perishable main components are: power (drive) and the chip. In general, LED lamps can not replace the chip, power supply (drive) can be replaced, however, some products power (drive) is not enough to facilitate the replacement, or replacement in the field to spend too much time. In addition, the current LED lamp life of 30,000 hours is generally the longest 5 million hours. If the LED chips can not be replaced, when it can only replace the entire lamp, resulting in greater waste. The fourth is the power (drive) the life issues. Power (drive) is the LED lamps are key components. Because many manufacturers of power LED lamps (drive) is not their own production, and sometimes the quality of LED lighting good about themselves, they often inadvertently stumble in the power supply (drive) out of the question above. In fact, both the LED itself, the quality or life, or power (drive) the life of LED lights are the embodiment of quality and life itself, LED lighting quality assurance should also include these two aspects, namely, LED lamp life of 3 million hours Ye Hao, 50,000 hours Ye Hao, should include the power (drive) the quality and life. Can is currently on the market, the general LED lighting LED chip manufacturers are the only guarantee of quality, power supply (drive) life is a different matter. What manufacturers generally guarantee for 2 years in the majority, three years less, 5 years is too little. Thus, the current development of LED spotlight there is a new bottleneck – the power (drive), which restricts the quality assurance of the development of LED lights. This should arouse the concern of manufacturers.

Tags: LED Display, LED Lighting, LED spotlight, LED Tube

January 25th, 2011

In the lamp light source design

235 Comments, LED Lighting, by led.

LED Lighting lamps
(1) source design
In the lamp light source design, the Taiwanese manufacturers gradually into COB (Chip-on-board) to do one of the options lamp light source, because of its focus on characteristics of light sources, lighting agencies to simplify and improve the optical design of LED chips with more stars when the light source susceptible to multi-point high-point of the lead to poor uniformity generated ghosting. Conventional COB package in the phosphor and the general single package is similar to dispensing with the way the package, there are molding the product launch with a phosphor, the benefits do not stop the package uniformity of light and better color space. In addition there COB excellent heat dissipation characteristics, early in the application of 10W or more lamps are mostly below the current 10W lamps such as light bulbs, lamps, also phased in the light source COB packages.
To do away from the light side is another type phosphor coating package developed by Taiwanese manufacturers directions. When the phosphor farther away from the chip when the chip interface temperature was lower, inhibition of conversion efficiency is low too. Also in the outermost shell or light shade to do the phosphor coating inside the lamp can reduce the multiple reflections caused by the optical loss, current lamps and light bulbs have also been increasingly imported from type coating technology, application in the light bulb angle can have a big advantage.
Applied to the high reflectivity of the lamp shade is also the direction of development. The traditional lamp reflector was 60% to 70%, many out of the multiple reflections in the optical loss. At present, optical thin film technology and improve the reflectivity of materials research and development, is expected to enhance the reflectivity to 95% shade over the light emitting efficiency and the total will rise with illumination, thereby reducing the number of lamps to achieve the effect of carbon reduction.
(2) thermal design
Heat dissipation between the life of LED Display products, in particular, the design must take account of the optical lighting needs and cooling capacity, the current substrate and heat sink cooling is the most widely used method. In order to meet the green trend, Taiwanese firms active in the development of the thermal conductivity of the substrate heat insulating layer of dielectric material, high heat halogen CCL is the industry goal, and toward the direction of halogen-free phosphorus.
At present a number of LED lamps lighting plant design, are modular design concept, taking into account the optical and thermal structure. The general heat flow simulation software for the industry often geometric shape of heat sink design, and with style, designed by a good thermal structure, and strengthen the module’s cooling capacity, high-power LED to the rapid dissipation of large quantities of heat, the LED remain stable operating temperature, you can achieve a longer life and higher photoelectric conversion efficiency.
Due to internal space constraints, most of the lamps can not install a fan forced cooling to do so in the spray cooling heat sink surface coatings industry has become Taiwan’s R & D direction. After coating with heat can significantly enhance the surface thermal emissivity, LED Tube interface, can now lower the temperature above 5 ℃, durability is also continuing to improve.
The current LED lighting products to enhance market penetration yet, the key reason is that higher prices of LED downlight, industrial standards, and uncertain light pattern, life, reliability and other issues to be resolved and still need to develop detection and system LED products to ensure quality and specifications to create healthy competition in the market environment. Taiwan is currently the situation in response to changes in the global LED industry, the manufacturers are committed to focus its resources on developing its own technology, and through the mechanism of cross-strait cooperation and improve package heat dissipation technology to improve the luminous efficiency, and improved production technology to make the price more in low and build the industrial chain and the development of industry standards. When the LED light emitting efficiency can be more than 200lm / W, the energy saving, long life, maintenance-free, environmentally friendly LED spotlight products, the advantages of most of the lighting needs to meet the future completely replace traditional lighting around the corner.

Tags: LED Display, LED Lighting, LED Tube