LED display, and the difference between LCD and LED LED display (LED panel): LED is light emitting diode, LED abbreviation. It is a semiconductor light-emitting diode by controlling the display to display text, graphics, images, animations, quotes, video, video signals and other information on the display screen. LED technology advances and applications to expand the market demand, the greatest driving force. Initially, LED mini light only as the computer, audio and video recorders and other high-equipment applications, with large scale integrated circuit and computer technology advances, LED displays are rapidly rising in recent years gradually extended to securities market Gupiao machine digital cameras, PDA and mobile phones. LED display set microelectronics, computer technology, information processing in one, with its colorful, wide dynamic range, high brightness, long life, stable and reliable, to become the most advantage of the new generation of display media, and now, LED display has been widely used in large squares, commercial advertising, sports venues, information dissemination, press releases, securities trading, to meet the needs of different environments. LED display structure and classification LED chip through the proper connections (including serial and parallel) and appropriate optical structure. May constitute a light emitting display light-emitting section or point. Paragraph or by light emitting point can be composed of digital control, sign control, rice word tube, matrix management, management- level monitors, etc.. Usually digital tube, pipe symbols, strokes, said a total of m characters tube monitor, but the stroke display and matrix management collectively referred to as character display. (A) LED display structure Basic semiconductor digital tube LED strip from the seven chip according to Figure 12 arranged in the. Enables the display of 0 to 9. The specific structure of the &quot;reflector-type&quot;, &quot;seven-segment bar-style&quot; and &quot;monolithic integrated a number of digital&quot; and so on (1) reflector-type digital pipe usually made of plastic with a white seven-segment type with a resonant reflector shell, a single LED and reflector affixed to the seven reflection cavity with each other on bits of printed circuit board, the bottom of each reflector The center is the LED chip. Loaded reflector in front, with the pressure welding method in the corresponding chip and printed circuit metal strips with good φ30μm between the aluminum line or metal wire, the reflector instillation in epoxy resin, then the printed circuit board with chips alignment with the reflector plate bonding, and curing. Reflector-type digital control of packages and the actual closure of two free seal. Seal means real scattering agents and dyes used epoxy resin, used for one or more two-bit device. Air sealing approach is covered in the top of the filter film and the absorption of light film, to improve the reliability of the device must be in the chips and the base plate coated with a transparent insulating plastic, which also can increase the light efficiency. This approach is generally used for more than four figures (or the symbol display). (2) strip seven-segment type is a mixed package of digital control. It is to do or die of gallium phosphide GaP wafer, designated as containing only one or several LED light bar, and then glued to the same seven day glyph &quot;Kovar&quot; box, and with the bonding process within the lead with a good, and the n epoxy encapsulation up. (3) The number of single-chip integrated LED digital display in the substrate material (large wafer), using integrated circuit technology to produce a large number of seven-segment digital display graphics chips by dicing to elect qualified, on the bit attached to the printed circuit board, with the pressure welding process leads to lead, and then top it up with &quot;fish-eye lens&quot; shell. They apply to a small number of instruments in the. (4) symbol control, rice production of the word control means and digital control similar. (5) matrix control (light-emitting diode dot matrix) also can be used similar to the monolithic integrated approach produced a number of digital display technology. (B) LED Display Categories (1) high marks by the word: character strokes display a high minimum 1mm (monolithic integrated high number of digital control word is generally 2 ~ 3mm). Other types of strokes display up to 12.7mm (0.5 inches) or even hundreds of mm. (2) divided by the color red, orange, yellow, green and a few species. (3) The structure of points, there are reflector-type, single and monolithic integrated seven-segment type. (4) from the light-emitting section of electrode connection points are two common anode and common cathode. (C) LED display of parameters As the LED display is LED-based, so it&#39;s light, electrical characteristics and the ultimate meaning of the parameters most of the same light-emitting diodes. However, LED display includes multiple light-emitting diode, so take the following specific parameters: 1. Luminous intensity ratio As the digital pipe sections in the same drive voltage, forward current of different sections, so sections of intensity. All segments of the luminous intensity value of the ratio of maximum to minimum ratio of luminous intensity. Ratio can be 1.5 to 2.3, the maximum not more than 2.5. 2. Pulse Forward Current If the pen display each piece of work typical DC forward current IF, in the p ulse, the forward current can be much larger than IF. The smaller the pulse duty cycle, pulse forward current can be greater. The difference between LED and LCD LED displays and LCD monitors compared to, LED brightness, power consumption, viewing angle and the refresh rate and so on, have more advantages. LED and LCD power consumption ratio is about 1:10, and a higher refresh rate makes the LED in the video have better performance, can provide extremely wide 160 ° angle of view, can display text, numbers, color images and animation information can also be broadcast television, video, VCD, DVD and other color video signal, pieces of display can also be broadcast networking. Organic LED display is the LCD response speed of the individual elements of LCD screen 1000 times in the bright light can not stop watching, and adapt to the low temperature of 40 degrees below zero. Using LED technology, can produce thinner than the LCD, brighter, clearer displays with a wide range of applications. LCD is liquid crystal display of the name: it includes a TFT, UFB, TFD, STN and other types of liquid crystal display. Commonly used in notebook LCD screen is TFT. TFT screen is thin film transistor, the English full name (ThinFilmTransistor), is an active matrix type liq uid crystal display, set back in its special fluorescent tubes, can take the initiative on the screen to control each pixel independently, which is called the origin of active matrix TFT This can be greatly improved response time, about 80 milliseconds, while the STN for 200 milliseconds! also improved the STN flashing (water wave) blurred, effectively improve the ability of playing the dynamic images, and compared with STN , TFT has excellent color saturation, reducing power and higher contrast, the sun st ill see very clearly, but the drawback is more power and higher cost. Simply put, LCD and LED are two different display technologies, LCD is composed of liquid crystal displays, and LED light-emitting diode is formed by the display. LED displays and LCD monitors compared to, LED brightness, power consumption, viewing angle and the refresh rate and so on, have more advantages.