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Two solution to control the brigness of Led display

Describes two ways that can control brightness of a large led display . One is to change the current flowing through the LED, the general LED current control allows continuous operation

In about 20 mA, in addition to a saturation of the red LED, the other LED brightness is basically proportional to the current flow; Another way is to use the human visual inertia with a pulse width modulation method to achieve gray scale control, cyclical changes is pulse width (ie duty cycle), as long as the repeated cycle of light short enough (ie, high enough refresh rate), the human eye is not feel light-emitting pixels in the jitter. More suitable for the PWM digital control, so in general the use of computer to provide the LED display today, almost all of the LED screens are based on pulse width modulation to control the gray level.

Recent years, China LED The display to maintain a high growth market, China’s LED display market in 2008 grew 38%, market size more than 10 billion yuan. Financial Crisis, with the rapid development of China’s economic recovery, LED display in the China market will usher in a new round of rapid growth. China’s current full-color display market has reached 6.5 billion, the current market dominated by government-led focus to direct sales model Sell , The market concentrated in the developed cities. With China’s economic development, stimulating domestic demand, market demand in central and western China will be relatively large, expected future market demand for full-color displays will be more than 30% growth rate, growth in full-color high-definition display volume will enlarge.

1, LED full color display industry research

(1) full color LED display industry in China Introduction

The arrival of the information society, promoting the development of modern information display, LED display for information display products, widely used in securities trading, banking, airport, flights, ports, railway stations, stadiums, roads, transport, dispatch command center , postal services, telecommunications, shopping malls, Advertisement Media, performances, meetings, exhibitions. As the LED materials technology and process enhancements, LED display to highlight the advantages of becoming a mainstream information display products.

Chinese LED display market has huge potential

In recent years, China LED Display (light emitting diode) displays the application of increasing current LED displays have been widely applied to banks, railway station, gymnasium, LED display market potential becomes increasingly obvious. Dakota United States is the world’s largest electronic display manufacturer, in 2008 fiscal year, its worldwide sales of 50 billion U.S. dollars.

Recently, Dakota Kurtenbach, vice president of worldwide acceptance, “China Electronics News” interview, said, LED display in China has huge market potential, localization strategy to make Dakota’s China business has a solid foundation. Reporter: dakota’s in October 2005 for entering the Chinese market has achieved satisfactory? The next few years, Dakota in the Chinese market What is the goal? Kurtenbach: Our achievements and China satisfied with the whole operation. China’s extremely rapid pace of development to better promote the company’s Asia-Pacific region markets. In the next few months, we will continue to play the company’s technical superiority and comprehensive project management services as its core customer base. From the long-term plan, our new factory will enable us to LED electronic display market in China, the further development of even more powerful, but also more convenient for our quick response to regional operations for the company in all aspects of marketing opportunities.

China LED Display Industry

1 Surefire Way To Fail In The LED Screens Industry

Yesterday I had an aperitive with one of our Customers and of course we were talking about LED screens. He is a talented entrepreneur who worked several years for big multinationals such as Coca-Cola and Nestle’ and then started to distribute our LED products worldwide.

While talking, he told me the story of one of his Clients. This gentleman contacted him because he wanted to install a LED screen to sell advertising spaces. He had a place where to install the LED display and wanted to invest some money to start the business. He saw the LED wall, liked it, bought it and installed it. Everything went smoothly and the day the screen was installed, he was satisfied and couldn’t wait to start making money.

After a couple of months, our distributor got a call from this gentleman, complaining because the business was not taking off and he wasn’t getting the return on investment he was expecting. Of course our distributor was surprised to hear that and he started to wonder whether the location was bad or something like that, but it turned out the location was good.

This article deals with some information about LED Lights and also lets us know of their various applications in our day-to-day lives. You can use LED lights in your house as well as your place of business for better impact on people who come visiting.

What are LED Lights?

LED is a short form for Light Emitting Diodes. They were initially developed in the 1920s and then they were first made commercially viable as indicator lights in the 1960s. Today they have developed from being simple indicator lights to being lights for replacing halogen and fluorescent light bulbs.

Because of its versatility  LED lights can be used in a number of applications

Decorative Lighting

LED Lights come in many different colours and shapes which can be used in many different applications. They are not only rich in colour but are compact in size, are energy saving, durable and have a long life, making them a perfect source for decorative lighting. They can be mounted on a flexible PCB, cable wire or any other electronically conductive material.

Commercial and General Illumination

Because of the innovations in the field of LEDs such as WLED, better known as White LED technology, it can be used as a single light, in clusters or in arrays as it is now bright enough to be used for general and commercial illumination. It can be used in public buildings, homes, shopping centers and many other places. Today the application of WLED based products is new trend that is catching on fast.

LED lights can be found in everything from consumer electronics to toys and from power tools to automobiles. Early on, LED lights showed up in new products as sort of an additional flare to equipment – indicator lights on coffee makers and glowing eyes in battery operated toys. But as scientists started to harness the technology and improve upon it, they realized there were some staggering benefits LED lights had over traditional lights. The strength and brightness of these lights started to lend themselves for use in other applications. It became evident that certain products would be much improved upon with the addition of an LED bulb.

What Makes LED Lights Different

L.E.D. stands for light-emitting diode. In this technology, light is created when the semiconductor diode inside the bulb is forward biased, or, turned on; electrons recombine with holes in the diode to release energy in the form of light. The color of the light is determined by the semiconductor’s energy gap. Using this type of science makes these bulbs more energy efficient, longer-lasting, smaller, and more durable than other lights.

These high-powered LEDs (HPLEDs) are become a major competitor to incandescent, fluorescent, and halogen bulbs in lamps and flashlights. For many applications, the LED bulb simply is the better solution.

Law Enforcement / Public Safety

When selecting an LED sign to promote your business, a scrolling sign may be a profitable decision. While a simple LED sign can give you some success a scrolling one will give you more. Signs that move or scroll are proven to get more attention that stationary ones.

Shouldn’t you get the most advertising for your advertising dollars? Scrolling LED signs are great for a number of reasons.

The colored bright lights of an LED sign are obviously attention getters during the day as well as night. Movement of words or letters on the sign catch peoples’ eye even more effectively.

Programmable scrolling signs make it easy to keep your display up to date. Advertise the catch of the day. Or the deal of the day. Give customers a heads up about upcoming sales events or trade shows.

Keep the public well informed as to what is taking place in your company. You’ll make money and build solid relationships with customers who depend on your goods and or services. Signs that scroll can be programmed to alternate messages or images.

Do you have a business in which people have to wait for service at times? Scrolling number LED signs can be used to call or display a customer’s number in line when it their turn.

Cool LED Gadgets – Different Faces For Different Purposes

LED has only started out as those tiny red dots that can be seen in some certain appliances. They usually come out to signal that the machine is turned on. However, developments in technology have found many uses for these tiny dots and they do not only come in red, they can also turn into various colors with the help of LED gadgets.

One of the most common uses of LED is the electronic displays that are used by many companies to promote their products and services. They have found it to be very cost-effective since it only needs several inches of the display board and several words, or even sentences. Those wordings can flash across the display. Using these LED gadgets is less expensive than using billboards or models to promote the company.

Another type of these cool gadgets is the lamps, or sometimes, they come out as flashlights. As mentioned earlier, LED does not only come in red, it comes in white and other colors, too. Thus, they have been used as headlamps for those who love to bike, especially at night. They also come in flashlight form, which can easily replace the illumination that a car headlamp can give. LED can make your very dark area as clear as it would be in broad daylight.

Ledtvseeker.co.uk ? The Best Shop For LED TV’s

LED LCD TVs are already the fastest growing technology in the flat screen market and 2010 is set to be the year for huge competition to begin, as manufacturers such as Samsung, Sharp, Sony, Toshiba and LG announce their sales predictions. Two types of LED TVs are available on the market today. The first type is the back-lit LED TV. Back-lit LED TVs utilize LED technology through a series of LEDs placed at the back of the television behind the panel. The main drawback of back-lit LED TVs is size, because the placement of the LEDs creates a thicker screen. In contrast, edge-lit LED TVs enable the use of LEDs around the edge of the screen. This provides comparable quality to back-lit units, while decreasing the thickness of the unit. Additionally, edge-lit LED TVs consume less energy than their back-lit counterparts, which is important to those who are environmentally minded. LED technology captures the natural colours of real life with the production of darker blacks, crisp whites, and strong contrast between dark and vivid colours. Samsung also enhanced its LED-powered products with Auto Motion Plus frame interpolation, which effectively reduces image judder and motion blur. A significant improvement of the LED displays over the LCD ones is the longer life span. With increasing costs of all resources in the world market, all the consumers of HDTV are equally concerned about the advantages and money savings that they make with every purchase.

When people think of high-tech digital technology and how it can be used in their business, an LED ticker is not always the first thing to come to mind, is it? It seems a bit basic and most of us don’t think of it as a dynamic way to reach out to customers. But the changing nature of this technology and the fact that LED tickers are so cheap make it a very attractive solution when you consider what they have to offer, so let’s stop for a minute and look at just what that is.

Here are some interesting benefits offered by today’s streaming tickers.

Financial Institutions

One of the first things that comes to mind when one thinks of this type of digital display is numbers, and that still holds true today. And LED ticker is an excellent way to deliver a constant stream of numerical data, like stock prices, changing interest rates, or sport scores. The most common way to take advantage of his is in any type of financial institution.

And it’s not just the practicality that is being leveraged in this type of situation?because what this type of display also lends is atmosphere. The streaming data feed and the highly unique presentation of an LED display immediately stands out and sends a signal of what your business is all about and how serious you are about what you do. This is why we are even beginning to see them pop up in business schools who want to take education the extra mile and immediately draw their students into the world they are preparing for.