The current status and future of China's full color LED display dedicated light source

With the improvement of the quality of the display screen, people are increasingly demanding the special light source for the LED display. However, the packaging process of light source devices for full-color LED display in China has various problems to a certain extent, which not only restricts the improvement of the quality of LED display products in China, but also is not conducive to the whole industry to the international market. High-end standards.

In this article, we will analyze the various angles of the display-specific light source package to explore the secret of its progress and truly benefit the industry.

In 1969, the earliest red LEDs were produced in China. In the 1970s, LEDs with low luminous efficiency began to be used for indicator lights, numbers and text displays. Since the 1990s, LED full-color displays have turned out. After nearly two decades of development and promotion, the full-color LED display has quickly become a new symbol of the city, spreading all over the streets and sweeping the globe. Without hesitation, the full-color LED display has become a normalized product and has become a new favorite in the advertising and media industry.

Specifically, the development of full-color LED displays is divided into an initial period—development period—the peak period. In the initial period, the LED full color screen appears almost exclusively in fashionable high-end occasions, which is expensive and becomes a symbol of the identity and status of the user. Subsequently, the full-color screen began to go to the world's major events and stages, becoming the focus of global attention. Today, the use of full-color screens is almost unlimited, and even the monochrome display, which is almost 100% of the door screen, is gradually being replaced by a full-color screen.

Along with the development of LED full color screens, the corresponding dedicated light sources have also undergone many changes. In the early days, the light source packaging methods for LED displays were mostly straight-lined lamps, and most of them were manually inserted. The package of single and double color display is mostly dot matrix mode, such as F3.75, F5. In the later stage, outdoor full color screen is mainly packaged by direct insertion lamp, such as 346, 546, etc., but almost all are automated production; indoor full color screen adopts table Sticking methods, such as 3528, 5050. It is worth noting that the Chinese also creatively invented the sub-surface model. Sub-surface stick is actually an improvement of the single-lamp scheme, and it is still being improved. Its advantage is that the indicators such as color consistency and viewing angle are close to the surface-mounting scheme, but the cost is lower. The disadvantage is that the processing is more complicated and resistant. High static requirements.

In terms of technical indicators, the main indicators of LED light source special light source package include light distribution, light efficiency and failure rate. First of all, for many LED display applications, the light distribution is an important indicator, which determines the design basis of the secondary optics of the application, directly affecting the visual effects of the display application. Secondly, 90% of the full-color LED display efficacy depends on the luminous efficiency of the chip. Again, the failure rate is very important for the display light source products. It is often said that the dead light and the flower screen are the failure rate of the light source, and the failure rate is related to the chip quality, packaging auxiliary materials, production process, design level and management level. .

Since the LED full color screen has multiple application paths, the requirements for the display light source package are different in different fields, different forms and shapes, different sizes and specifications, and different customer requirements, and higher challenges are also raised. Traditional packaging products such as 3535, 3528, 5050, which used to occupy half of the market, have been improved and improved in performance, and have begun to go outdoors. High-contrast products have been very popular.

In recent years, with the rise of special-shaped full-color screens and the emergence of high-density ultra-small-pitch full-color screens, more styles have appeared in the full-color display-specific light source packaging products. Outdoor full-color screens have become popular with P8 watch products, and indoor full-color screens have gradually moved to smaller pitches such as P4, P3 and even P2.0.

With the development of the times, people's requirements for full color screens are increasing. Therefore, the performance and functions of LED light source package products must also keep pace with the times. China has always been the world's LED full-color screen packaging centralized, according to incomplete statistics, 80% of the world's LED display device packaging is concentrated in China. In the past few years, foreign LED packaging companies have continued to move to the mainland, domestic packaging companies continue to grow and develop, and technology continues to mature and innovate.

However, we can't ignore that China's LED packaging devices are mostly concentrated in the lower end of the process level. The uneven lighting source packaging process has caused many display product quality problems, and it has become difficult for China's LED display industry to enter the high-end. One of the obstacles.

Compared with international giants such as Nichia and Cree, there is still a certain gap in the overall level of LED full color screens in China, and this gap cannot be eliminated in a short time. However, it is also the short board of the domestic full-color display dedicated light source package. A few domestic excellent packaging companies are actively catching up, and some indicators even have breakthroughs. This has also led to the successful launch of LED full color screen packaging companies such as Lehman. we believe,

With the improvement of the packaging technology level of domestic enterprises, the quality of LED light source special light source in China will have a big progress.