Analyze the development trend of LED in different electronic product development fields

2020-12-15 11:21:03

Analyze the development trend of LED in different electronic product development fields

  Backlight, display screen, and lighting are the three largest and most promising shopping malls currently using LEDs. Shopping malls are different, and needs are different. In different application areas, what direction will LED technology develop? What characteristics of the product should the company strive to improve?

  Data shows that the overall scale of China's LED display industry is stable, and the number of companies with LED display screens as their main business in the country is around 400. In 2012, the total sales of LED display shopping malls nationwide was 25.3 billion yuan, an increase of 15% over 2011; in 2013, the scale of shopping malls for the national LED display industry increased by about 10% to 15%, and the total number of shopping malls was 28 billion yuan. At the mercy.

  LED display market development has entered a relatively stable period. And as the level of LED display skills continues to improve, innovation will become an important manifestation of the company's competitive advantage in the market. "

  The whole machine: the skill level keeps pace with the world

   At present, the overall skill level of China's LED display is basically synchronized with the world, and it is at the world's leading level in certain key skill areas and special engineering applications. Innovative products change customs and customs, especially for small-distance high-density LED display products, new-style LED curtain wall display products, and professional control boards and control systems.

From the perspective of overall skill innovation, some key companies are actively undertaking various scientific and technological projects, and are supported by the National Development and Reform Commission’s special energy saving and industrialization projects; the direction of all professional skills innovation is mainly focused on large-screen control and high-density display. Commodity development, engineering planning for special projects, widening the use of LED displays, product reliability, energy saving, etc.; in the field of traditional LED display screens, the key skills of various indoor and outdoor LED display screens are fundamentally sophisticated, and the whole product is in reliability Continuous improvement and perfection in terms of technology and technical level constitute a standardized series of products; full-color indoor and outdoor display screens have been widely used, and outdoor high-definition full-color surface-mounted products are becoming more sophisticated.

  For the LED display profession, the next step in the orientation of the development of skills must be based on improving the quality of consultation as a breakthrough in technological innovation.

  Develop and use reverse polarity LED chips, and reduce the operating current density, increase the luminous power, improve the reliability, and make the display screen more energy-saving. Using reverse polarity red LEDs can greatly improve the luminous power; reducing the operating current density of red LEDs can significantly improve its reliability; reducing the operating current density of green LEDs can also significantly improve their luminous power. At the same time, high-quality LED display screens such as various colors of monochrome screens and multi-combination dual-color screens can be developed.

   These technological innovations are inseparable from the close cooperation between the upper, middle and lower reaches. The key to the joint innovation of the industrial chain to promote the use of LEDs is to prevent the chip from overloading, operate with a smaller current density, use more chips appropriately, reduce the demand for power and heat dissipation, and maintain the total production cost unchanged or unchanged. On a large basis, further improve the luminous power and reliability of LED products.

  Chip: "Four highs" correspond to more needs

  So, what kind of LED display screen is a real high-quality display screen? Our engineers believe that it should be roughly divided into six aspects. The first is that the LED display screen has good uniformity, that is, the brightness and color uniformity; the second is that the display screen does not die or rarely die; the third is the low gray uniformity; the fourth is that the above goals change little after long-term use; Fifth, the luminous tube has high brightness and energy saving; sixth, the appearance is smooth.

  For indoor display screens in detail, the "four highs" characteristics of high-quality LED display screens put forward detailed requirements for chips. The first is "high density", chips are getting smaller and smaller, and the need for commonality is getting higher, but the need for brightness of a single chip is lower; the second is "high scan", the higher the scanning frequency, the longer the chip In the backpressure situation at all times, the corresponding chip functions must also be improved; the third is "high rewriting", the higher the rewriting frequency, the higher the need for the chip's tolerance under high-frequency pulse currents; the final "high gray scale", It is necessary that the commonality of wavelength and brightness of the chip under various currents is very good.

   Regarding the field display screen, from the straight tube to the 3535 surface mount, the light type commonality of the chip is very good, the brightness is higher, and the moisture resistance is very good.

   Equipment: Five major trends lead the development of skills

  LED display equipment is another leading element that determines the quality of LED display screens. At present, five trends are leading the development of vocational skills.

   Lower and lower operating expenses are the constant pursuit of LED display operators. The first trend is that the brightness of LED equipment continues to improve, and the power consumption of the display screen continues to decrease. Only in this way can the operating cost of the LED display screen continue to decrease.

   The second trend is the need for LED equipment to reduce light pollution.

  The third trend is that surface mount equipment is moving from indoors to the field. After continuous exploration of generalized disciplines such as mechanics, heat, data science, optics, etc., the reliability of surface mount equipment in the field has been greatly improved, and the functions of waterproof, moisture-proof, and UV resistance can now basically meet the needs of field use.

  Users' pursuit of high-definition display in the field is endless, and the record of LED high-definition display is constantly being rewritten. The LED screen dot distance is getting smaller and smaller, and the equipment scale is getting smaller and smaller. This is the fourth development trend.

   The final development trend is reflected in the display effect of the screen. The industry has greatly improved the display effect of LED equipment through the selection of improved surface mount equipment contrast skills and rubber surface matte skills. However, with the continuous improvement of market demand for display screen image quality, LED equipment should also meet the higher demand for image quality.

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