LED display technology will not only continue to improve the growth rate of LED display, LED display manufacturers can take this opportunity to break the development of LED display industry. According to survey statistics, the output value of China's LED display industry in 2011 has reached 21.9 billion yuan, an increase of 18%. It is expected that China's LED display industry will maintain a growth rate of 15-20 in 2012-2015. In recent years, the LED rental display market has been very popular, driving the entire LED display industry to enter a stage of rapid growth. In addition to advertising screens, performing screens, traffic-inducing screens, etc., which are widely used outdoors, indoor LED display screens are also a potential market, including indoor monitoring large screens and indoor electronic curtain walls. However, from a technical point of view, in fact, in the past 10 years or so, the LED screens introduced by most manufacturers have not changed much in the basic system architecture, but only a certain degree of improvement for certain technical indicators. And fixes. At the same time, the popularity of high-performance products has also lagged behind. Although a display driver IC with PWM (Pulse Width Modulation) function has been introduced in the market a few years ago, and market participants have already agreed with the PWM function. With high refresh rate, constant current and other advantages, but due to price and other factors, so far the market share of such high-performance display driver IC is still not high, the market is mostly used in large amounts of basic models (such as accumulation 5024 / 26, etc., high-end products are mainly used in some LED screen rental market that pays more attention to quality. However, with the rapid development of the current LED display market, more and more users have begun to put a series of complex requirements on the LED screen from visual effects, transmission methods, display modes, and playback modes, which also makes LED screens The product faces a new technological innovation opportunity, and the brain LED driver IC as the overall display system will play an important role. Strengthening industry cooperation to break through technical bottlenecks Data transmission between LED screens and motherboards is generally carried out by serial data transmission (SPI), and then synchronously transmitting display data and control data through signal packet multiplexing technology, but at refresh rate and When the resolution is improved, it is easy to cause a bottleneck in data transmission, resulting in system instability. In addition, when the screen area of ​​the LED screen is large, the control line is often very long, and is susceptible to electromagnetic interference, which affects the quality of the transmitted signal. Although some manufacturers have introduced new transmission media in recent years, how to provide users with excellent performance and high cost performance is a key problem that plagues the industry. To this end, some manufacturers have suggested that the data transmission method of LED display screens needs to start from the lowest level of technology to find an innovative solution. It is worth noting that the LED screen technology innovation has involved all aspects of the industry chain, including the improvement of the driver IC manufacturing process, the hardware of the control system, the intelligent development of the control software, etc. These technological innovations require IC design vendors and control. System developers, panel makers, and more, including end users, are more closely integrated to break the deadlock in industry applications. Especially in the development of control systems, how to better cooperate with IC design companies, improve the system performance of LED screens and control the intelligent level of software is a top priority.
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