The LED display module base

Display technology is a kind of objective things will reflect outside the information (optical. Electrical. Acoustic and chemical etc), after transform processing, with proper form (mainly images, graphics, digital, characters) to display, for people to watch, analysis, use a technique. Now the so-called display technology, can be called electronic information display technology, it is based on the optical, chemical, electronics, medicine, acoustic based on science and technology of such a certain degree comprehensive technology.
Electronic display technology application and research involves the range is very wide, including various luminescent materials research, experiment of emitting mechanism; The basic principle of various display mode and its structure form, the material and devices with showed the choice and making craft; Displays information input, transform, treatment and control, etc. With the development of science and technology, as the economic, military, society and people life development, the information of increasing of quantity and. People living in the information plan congregation of zhongsheng in acquiring some information. Research shows that people in information obtained nearly 2/3 is through the eyes. And it is for people to show technology, provide all kinds of important information a window; And, as you can imagine, display technology and extremely wide development heaven and earth.
Display technology application has been widely, in sports venues, big screen display system can display the competition result, live and game time etc; In transportation industry, can display the running situation; In the financial industry, can real-time display financial information, such as stock, exchange rate, etc.; In commercial telecommunications system to the masses of customers, can display announcement, news, advertising, etc. Display technology also can be widely used in industrial and agricultural production, military, medical units, the public security system and the national economy such as aerospace industry, social life and military field, and plays an important role.
Leds display applications
ROM. Plug kauf (Lossew o w.). In 1923, discovered accidentally formation of semiconductor SiC the light - N and P, but use of semiconductor launch - N and P principle electroluminescent made light-emitting diodes (leds) just arrived in the late 1960s to develop rapidly.
In recent years, due to the production and processing technology of semiconductor maturity and perfection, Light Emitting Diode (LED Emitting Diode) over already, in solid display is dominant. LED by extensive attention and the rapid development, is with its advantages of itself inseparable. These advantages summarized up is: high brightness, working voltage, low consumption, miniaturization and easy and integrated circuit matching, drive is simple, long life, impact resistance and stable performance. LED development prospect, is currently towards a higher brightness, higher resistance to climate sex, higher luminous density, high luminous uniformity, reliability, full-color change direction.
Consists of semiconductor material is different and can get can emit different colorific LED crystal points. At present the most widely is red, green, yellow LED. And blue and pure green LED development has reached practical stage.
Speaking from the shows, LED display text, digital (can), also can digital tube display graphical image (LED matrix module), from applications, LED display that can be used in indoor environment, and also can be used in outdoor environment.
The development history of the display method
The traditional incandescent lamp, can't overcome its power, the defects of short service life, neon lights, advertisements, graphic signs advertising, but change is gorgeous colour more monotonous, video image advertising; cannot play Magnetic flap although can be made by computer, but their simple pattern illuminant, do not have hair night use effect is poor. In recent years, along with the microelectronics technology, automation technology, the rapid development of computer technology, semiconductor fabrication technology matures, cause LED display points are getting smaller, resolution more and more high, but can will show light three colors (red, green, blue) recovery perfected color effect, make light emitting diode (LED) as a display device, expanding the scope of application. Look from future development trends of video effects, currently has several media, its performance advantage each has his strong point:
The cathode tube (CRT) or quartz tube (DV) large TV cost very expensive, and usually only do 37 inches, volume again big will limited. In don't need large screen and indoors when using, results are ideal.
Color liquid crystal display (LCD), also expensive, circuit complex, area cannot too big, and the influence of by Angle is very large, visible Angle is small, but the picture is exquisite, depending on the feeling good.
Map projection equipment (Projector), the brightness of small, legibility poor (picture uneven) by light. But the advantage is convenient installation and easy maintenance.
TV Wall (TV - Wall), the surface has disjunctive, on the vision, another foreign body sensation on poor effect outdoor service brightness, is not suitable for representing text, but indoor performance when TV screen effect is good.
LED space limitation is lesser, and can be designed according to user's requirements of display size, with full color effects, the perspective of the characteristics of big, can show character, design, image (including animation and video).
Our rapid economic growth, the spread of information to more and high demand. Can believe that electronic LED display to base color bright is dazzing, large display information, long service life, power consumption is small, light weight, small size, high stability, space, easy to operate, installation and maintenance in social economic development characteristics play more and more important role.