LED display industry most revolutionary innovation technology inventory

Time:2018-08-02 Views:1275

Whether it is the development of the country or the progress of the enterprise, innovation is always the first driving force, and it is placed in the core position. Especially for the LED display industry with high technology content, the technical innovation is even more important. Looking back on the development of LED display industry, LED display manufacturers actively respond to the call of the country, with innovation as the development concept of the company, and continuously launch new and revolutionary technologies on the road of industry development, pushing LED display again and again. Technology reform in the industry. Today, Xiaobian will take stock of the most milestone innovations in the LED display industry and analyze how it will play a role in the long-term development of the industry.

CGA display mode drives LED display

In the early 1980s, with the development of computers, the CGA display method came out. It has four colors of 320*200 resolution. In just 10 years, the display mode has experienced CGA, EGA, SEGA, VGA, SVGA. To the ultra-high resolution development, the display accuracy has been improved from 320*200 to 1600*1250, from four colors to 32-bit true color, and the scanning frequency has been developed from 15.7K to 150K. The working principle of the display is that the signal sent by the receiving host is reduced to light. As the development of people needs a large-screen device, a display device similar to a projector appears. However, due to its own brightness, it cannot be used in a high-brightness environment, so an LED display screen appears, and the LED display screen has the characteristics of large viewing angle, high brightness, and bright colors.

Ultra-high brightness for outdoor full color display

Ultra-high brightness refers to LEDs with luminous intensity up to or exceeding 100mcd, also known as candela-level LEDs. The development of high-brightness A1GaInP and InGaN LEDs is progressing rapidly, and has reached the level of performance that conventional materials such as GaA1As, GaAsP, and GaP cannot achieve. In 1991, Toshiba Corporation of Japan and HP Corporation of the United States developed InGaA1P 620nm orange ultra-high brightness LED. In 1992, InGaA1p590nm yellow ultra-high brightness LED was put into practical use. In the same year, Toshiba developed InGaA1P 573nm yellow-green ultra-high brightness LED with a normal light intensity of 2cd. In 1994, Japan Nichia Corporation developed InGaN 450nm blue (green) color ultra-high brightness LED. At this point, the three primary colors of red, green, blue, and orange and yellow LEDs required for color display have reached the candela-level luminous intensity, achieving ultra-high brightness and full color, and making the outdoor full color of the luminous tube. The display becomes a reality.

Monochrome, double base to full color brings a beautiful visual experience

The LED display has gone through a monochrome, two-color graphic display to an image display, but it was not until the mid-1990s that a full-color screen appeared, regardless of the performance during the period (increased brightness LED display and blue light, etc.) And the composition of the system (computerized full dynamic display system) and other aspects have made great progress. The level of ultra-high brightness full-color video display that has been achieved so far can be said to meet the requirements of various application conditions.

Up to now, full-color LED displays have been widely used, consisting of red, green and blue LED lights, showing white balance and 16,777,216 colors. The emergence of full-color technology has brought a huge display breakthrough for the image effect of LED display. Nowadays, whether it is indoor or outdoor, the LED large screen used is basically a full-color LED display, which can be used by advertisers. Creativity is maximized to deliver a powerful visual experience for the audience.

Surface-mount packaging technology continues to mature

In 2002, LED displays for surface mount packages were gradually accepted by the market and gained a certain market share. Many manufacturers introduced such products. In recent years, with the rapid development of three-in-one technology and continuous improvement of production technology, surface-mount packaging technology has developed rapidly. Compared with in-line packaging technology, surface-mount technology has a large viewing angle, good color consistency and contrast. Well, the weight of the cabinet is light and many other advantages. In addition, the surface mount technology has a high degree of automation and can be directly used in the SMT high-speed placement machine, which directly improves the production efficiency of the product and reduces the cost.

Before the introduction of surface mount packaging technology, the direct insertion technology became the mainstream of the LED display market. However, under the restriction of high density display, the in-line LED display can only be applied outdoors, which greatly limits the LED display pair. Infiltration of the entire application market. The appearance of surface mount packaging technology has undoubtedly promoted the application of LED display in high-density indoor display, and with the advancement of LED chip technology and LED packaging technology, the brightness and protection level of surface-mounted LED display has also been able to meet The demand for outdoor applications has gained faster applications. As a result, the surface mount packaging technology not only expands the application range of the LED display screen, but also has the tendency to seize the entire LED display market.