LED display system theory and engineering technology

LED display is using light-emitting diodes dot matrix modules or pixel unit composed of a flat display screen. Because of its high lighting rate is high, long service life, configure, flexible, rich color and for indoor and outdoor environment adaptiveness wait for an advantage, since the late 1980s LED manufacturing technology that starts with the continuous improvement in foreign been widely used.
This topic firstly introduces the LED display of development and application situation.
In the first chapter describes the LED display device of basic working principles and characteristics, introduces in detail the destem concrete circuit and parameters.
The second chapter for wide application in the graphic display, introduced the basic component of it after part of the LED display circuit of the in-depth analysis, and presents the hardware circuit diagram and complete practical programming list all the assembly language.
The third chapter of content is image display, focuses on analyzing the LED display gray control method, and introduces the integrated circuit TLC5902 the characteristic and application.
The fourth chapter discusses the most advanced video screen at video signal, the organization, video LED display structure, main IC chip, and related application software etc, are introduced DS90C031 etc ZQL9701, the technology of microarray characteristics and LEDSHOW, & ldquo; LED management tools & rdquo software use method. Also included in the book and LED industry standard. Book available to undertake various kinds of the LED display work of engineering and technical personnel, also can be used as reference to the relevant professional colleges and universities teaching reference or materials.

Former speech

The LED display is using light-emitting diodes dot matrix modules or pixel unit composed of a flat display screen. Because of its high lighting rate is high, long service life, configure, flexible, rich color and for indoor and outdoor environment adaptiveness wait for an advantage, since the late 1980s LED manufacturing technology that starts with the continuous improvement in foreign been widely used. In our country, especially after the reform and opening to the national economy in the 1990s growth, for public release information demand increasingly intense, led screen appear precisely adapted to the market situation, thus in the LED display design and manufacturing technology and application level are obtained a rapid increase.
The LED display experienced from monochrome, double-color graphic display, to image display, until today video display the full color the development process. Whether during performance (enhance brightness LED display and blue glow lights etc) and system composition (computerized all aspects of dynamic display system) has made much progress. At present already reached video display brightness full color, can say the level to meet requirements of various application conditions. Its application field has pervaded traffic, telecom, advertising, promotional and other aspects. Our country LED display development can say basically and world level synchronization, has already formed a fairly development potential of the industry. It should be noted that our country LED industry not only in application technology has been a huge success, and in the innovation ability well, such as Beijing ZhongQing data equipment company developed ZQL9701 vlsi chip, represents the current LED display control circuit of the international level.

With domestic LED display industry rapid development, at present about the LED display than the books data seem too few, is not convenient to design manufacturing personnel and use maintenance personnel, which had the job compile a LED display technology 'book idea, unifem invited the university of electronic science and technology press, presumptuous to writing grass book. Books respectively in LED display briefings, the LED display device, graphic display, image display, video screen related technical problems such as described, in order to make the LED display work for all kinds of readers can get some from the book useful materials.

Because the LED display a variety of comprehensive application of products, involving photonics, semiconductor devices, digital electronic circuit, large scale integrated circuit and single-chip microcomputer and microcomputer etc. Each square road and methods will take bigger space are introduced, easy to dilute theme. In turn using integrated circuit and singlechip simple universal carved and LED a software of hardware and explicitly. The above all areas, self-sustaining, in this book, only the best of cannot introduce all the directly related to indicate meaning, and not part of the pursuit of each related technical own complete sex; Second, try using simple universal solution into not plan, can pursue relevant technical sophistication. For example in some control circuit, can use conventional integrated circuit implementation, and face, already and avoid each related technology "top" trouble, so as to achieve the purpose of streamline content emphasize the key. And no trace a discussion. LCD In dealing with related fields in the book adopted the following two technical countermeasures: first, as the main narrative screen on, introduces relevant technology in LED display in the application of the device, solution.