LED display driver IC price steadily increasing demand

LED display market can be divided into fixed and removable type two. At present the most popular LED display market is often held around the Chinese star concert, this kind of activity is usually held in the stadium or square, it can remove LED display for the demand, because this kind of activity is usually compared to the ticket revenue and profits, to build a large size LED display, far from being a order of magnitude, so the organizers usually want to build a large screen LED display the entire venue to incite the enthusiasm of the audience.

Dianjing science and technology chairman Jin Jiyuan pointed out: "although Europe and Japan and South Korea have some star concert, but relatively Chinese mainland market, therefore, China entertainment market demand for LED display is higher than the European market. "

The LED display on the highway and the airport terminal is public service application market, it is fixed. Europe and the United States highway, train and car market also have some of the LED display, but in comparison, China, demand in these applications on the market develops very rapidly, so the demand for LED display is obviously much larger than the European and American market.

There is a need to follow the municipal construction, such as the government's high-tech park construction projects, it basically has nothing to do with economic considerations. In general, public construction, propaganda and entertainment market demand for large LED display.

Jin Jiyuan said that the current economy more developed in Europe and the United States, Japan and South Korea market demand for LED display tends to be flat, but Japan may be an exception, because the earthquake and tsunami in Japan will produce highways, airports and other reconstruction needs, and this will certainly lead to the growth in demand for LED display. In recent years, China's economic activity is relatively frequent, LED display supplier for the Chinese mainland market is a very good opportunity. This year, Taiwan commercial LED display market will not be much increased, but the traffic promotion LED screen will have some growth. China's LED display market is booming, has accounted for more than half of the global market share (60%), this year's growth rate will depend on the progress of major projects to promote the Chinese government.

LED driver chip can be divided into general and special chip chip

Basically, the principle of LED display for pixel points using LED, will be a lot of LED in order to form a lattice, constitute a LED array, which constitutes a LED display. Through different LED drive mode, can get different effects of the image. Therefore, the pros and cons of the drive chip, LED display on the display quality has an important role. LED driver chip can be divided into general and special chip.

General purpose chips are generally used in LED display of low-end products, such as indoor single, dual color LED display, etc.. The most commonly used universal chip is 74HC595, with 8 bit latch and three state outputs. Each maximum current output of 35 mA. General IC manufacturers can produce such chips. Because LED is the current characteristic of the device, that is, under the premise of saturation conduction, its brightness varies with the size of the current, not with the change in the voltage at both ends of the change. Therefore, one of the most important features of the chip is to provide constant current source. Constant current source can ensure the stability of the LED drive, eliminating the flicker phenomenon of LED.

As for the special LED display driver chip has large output current, constant current and other basic features, more suitable to large current, high quality occasions, such as outdoor full-color, indoor full color etc.. The key performance parameters of the chip LED display screen has the maximum output current, constant current source output channels, the current output error and data shift clock.