Technology wins innovation and wins market with innovation
——Interview with Mr. Gong Weibin, General Manager of Ruifeng Optoelectronics
Since its establishment in 2000, Ruifeng Optoelectronics has been committed to being a "respectable enterprise" and a "respectable person" with the core concept of "integrity, harmony, innovation, and enterprising". A remarkable achievement. Recently, at the Guangzhou International Lighting Exhibition and the Shanghai International Lighting Exhibition, as the leader of the LED light source industry in Shenzhen, Ruifeng Optoelectronics exhibited a high-brightness LED light source with high, medium and small power, which aroused the industry. For this reason, Optoelectronics News Network interviewed Mr. Gong Weibin, the general manager of Shenzhen Ruifeng Optoelectronics Co., Ltd. (hereinafter referred to as “Gong Gongâ€).
With the continuous improvement of LED technology, LED efficiency and brightness continue to increase, LED has gradually been applied to various types of light sources, such as backlights, landscape lights, lights, street lights, indoor and outdoor displays, and even have entered the home lighting . LED development has evolved more and more. The transition from traditional lighting to LED lighting has spread around the world. LED efficiency has reached 131 lm / W, is expected to reach 161 lm / W in the second half of this year, LED drive lighting revolution has become a fact, in March 2010, a well-known Japanese company stopped producing ordinary incandescent bulb business, fully expand LED lighting business It is also a strong testimony.
A new generation of lighting sources has begun to spread. LED demand is getting bigger and bigger. Ruifeng Optoelectronics has reached 120kk/M in 2008, but the production capacity can't keep up with the customer demand. This year, Ruifeng has added a new production line. In 2010, the production capacity can reach 400KK. /M or so. The products are mainly concentrated in lighting and backlight products, automotive electronics, and some supporting products of domestic large-scale home appliance enterprises. The existing production capacity can basically meet the needs of customers in the premise of ensuring quality.
Taiwanese companies account for the majority of the LED market share
General Gong said that the country is now vigorously developing the LED industry, and the policy is strongly supported. The entire industry is developing rapidly. LED lighting, LED backlighting, LED Display, and some professional LEDs for electromechanical products are characterized by rapid growth and large demand. But it also exposed a lot of problems. The most important thing is that the investment is excessive and even blind.
As far as the hottest LED TVs are concerned, the demand is very strong. From the sales of LED TVs, it is not difficult to draw conclusions. However, due to the unreasonable layout of domestic LED enterprises and imperfect industrial chain, the biggest cake in the whole industry was divided by foreign giants and Taiwanese companies, and domestic enterprises did not eat the biggest cake. The LED backlight market is growing at a very fast rate because LED TVs are developing fast and new products are replacing old ones. Therefore, LED backlight market has good prospects and rapid development. However, because many domestic companies do not meet the technical requirements of TV, the demand for LED lighting has not yet been developed, and it is far less than the demand for backlights. This has led Taiwanese companies to account for the majority of the LED market.
In terms of LED backlighting, it is mainly for consistency requirements. However, LED TV color rendering and reliability are the key points. Consumers choose LED TV mainly to be optimistic about its color performance. At the same time, for LED TV, one LED is broken, the whole TV is lost, and reliability is a hurdle for many domestic companies. Mr. Gong believes that the solution is mainly the improvement of light efficiency, the solution of heat dissipation, the way of phosphor distribution and the development of high reliability materials. Ruifeng has done a lot of work in these areas and won the favor of the market.
Ruifeng breaks through the bottleneck of LED highlighting and high coexistence
General Manager Gong introduced that Ruifeng has been vigorously promoting technological innovation, winning with technology and making great efforts in new products and technologies. There are more than 50 people in the light research and development department, and the departments are also subdivided into various fields. From the fields of material technology, basic technology, packaging technology, optical design, application development, and finished product application. Moreover, we have hired industry experts from Japan and Taiwan as technical consultants to give guidance to Ruifeng's research and development. Ruifeng has been at the forefront of the industry in research and development.
Ruifeng Optoelectronics recently exhibited high-brightness LED green light sources in Guangzhou and Shanghai, which caused the industry to be amazed. According to the industry, it is theoretically contradictory to highlight the high-definition, an LED product will not There is a high brightness and a high color rendering index. However, Ruifeng has invested a lot of energy, manpower and funds in research and development, from the application of raw materials, basic packaging technology to the application of back-end products, secondary optical design. R&D has been started from the source of the chip, which has greatly improved the quality of Ruifeng products, and Ruifeng is developing and improving itself in terms of solid crystal glue, PPA materials, phosphors, etc. The raw materials are much better, so we can launch such a strong brand, and the new products developed ensure that it has both high brightness and high color rendering index. These products have a strong response in the fluorescent and indoor lighting markets. Word of mouth is very good!
Ruifeng's multiple technologies independently research and develop LED quality and the United States and the United States
At this stage, because high-power LED lamps are not very mature in technology, there are still some problems that need to be solved. Take high-power street lamps as examples, such as waterproof, dustproof, UV-resistant, shock-proof, secondary optical processing, color rendering, brightness matching, brightness attenuation, reliability, etc. Street lamps require very high requirements for these parameters. In order to solve these problems and improve the reliability of LEDs, Ruifeng uses its own research and development advantages in the field of materials, using self-developed insulating glue, which improves the yield of the product and reduces the dead light rate. Because the traditional insulating rubber contains epoxy material, the fusion with silica gel is not very good, it is easy to cause some hidden dangers, and the epoxy material has some congenital defects, such as UV resistance, anti-aging ability, easy to change color, etc. These will affect the life of LED products. Ruifeng's insulating glue is developed by itself and does not contain epoxy materials. It does not cause such phenomena. Moreover, Ruifeng's phosphors are also being developed together with upstream suppliers. They do not use weakly acidic phosphors in pursuit of short-term high brightness, resulting in quality hazards. Many of Ruifeng's products are now comparable to the quality of international manufacturers.
The key to high-power LED heat dissipation is in solid crystal technology.
When it comes to LED heat dissipation, Gong said that solid crystal is the key. Ruifeng's high-power and modular products are mainly for indoor lighting, downlights, spotlights and surface light sources. In the heat-dissipation technology, many enterprises' high-power LEDs directly use solder paste to fix crystals. Under the conditions of equipment and material technology unsatisfactory, the use of solder paste can only be said to be a temporary measure, but Ruifeng is Solid crystal has developed a new type of solid crystal glue. The heat dissipation effect is better than the solder paste used in general enterprises. Because the solder paste itself will produce pores during the curing process, and the solder paste is thicker, the heat dissipation effect is not good. The new solid crystal glue developed by Ruifeng itself can be made thin and has better thermal conductivity.
From the packaging materials, it can also be seen that the thermal resistance of the chip substrate material and the solid crystal material becomes the bottleneck of the thermal resistance of the entire high-power LED assembly. Gong also cited the advantages of eutectic flip-chip technology. For high-power LEDs, due to the reduction of overall thermal resistance, the reliability of the entire assembly of high-power LEDs will be substantially improved. For a 40 mil chip, the thermal resistance can be controlled at 1 W/mk. By using a eutectic process and other packages, such as the matching substrate materials, it is also necessary to choose. Then the overall thermal resistance can be controlled within 6W/mk. The advantage of flip chip technology is that it can improve the light extraction efficiency of the wafer and improve the heat dissipation path.
“Processing the heat dissipation problem with the surface†greatly improves the cooling efficiency of Ruifeng LED
Ruifeng has made a lot of efforts to improve the heat dissipation efficiency of the product. The improvement of the solid crystal glue and the improvement of the solid crystal technology are only part of it. The solution is also to solve the problem of heat dissipation by the surface, which is to find ways to increase the heat dissipation of the chip. The area, the heat generated by the "small point" of the chip is distributed through a "large face", which greatly improves the heat dissipation efficiency of Ruifeng products.
Ruifeng first developed the substrate coating technology; that is, through the professional coating technology, the metal can be uniformly plated on the surface of the substrate to increase the heat dissipation surface. Secondly, Ruifeng packaged the LED package and the finished product solution. This includes a full range of application solutions such as structural design, thermal design, and drive circuit design. In this way, Ruifeng has solved the problem that the LED light source does not match the driving and heat dissipation due to the unfamiliarity of the LED, and the package processing scheme has achieved certain results. And has been discussing cooperation with some large enterprises.
Ruifeng R&D system perfects the quality of LEDs from upstream control
Mr. Gong said that the quality of Ruifeng products mainly depends on the strength of Ruifeng's R&D system. Ruifeng has made great progress in the basic technology of solid crystal and phosphor blending. The R&D department of secondary optical design has solved LEDs. The problem of impure color is the common spot problem of high power. Not only that, but also through the secondary optical design to increase light efficiency. This technology has already taken the lead in the world.
It should be said that Ruifeng's entire R&D system has already surpassed many domestic enterprises in essence. Together with Ruifeng's excellent manufacturing and quality control capabilities, many of our current products are comparable to the quality of international manufacturers. Ruifeng is currently developing a phosphor coating process that can enhance light efficiency and reduce costs. Since the thinner the phosphor coating, the higher the efficiency obtained, which saves cost and improves luminous efficiency. And not just phosphors, the upstream chips are also making a fuss.
The more upstream it is, the more technical and capital-intensive it is. If there is no technology to support it, the money invested will be drowning. Now China has a bad phenomenon that is speculation and short-sightedness. However, Ruifeng did not. Ruifeng has jointly developed LED chips with the world's top chip manufacturers to control the quality of LED products upstream, so that Ruifeng's products have surpassed many peers in essence and have been leading from the chip. One step.
Ruifeng's growth rate has always been far ahead of the average growth rate of the entire industry, which is based on a systematic research and development system. Systematic engineering technology and systematic management system have made Ruifeng's research and development always ahead of the industry. Ruifeng has been committed to the development of core materials, processes and structures for optoelectronic components, and involves upstream chips, phosphors and downstream electronics applications. It can be said that Ruifeng uses technology to win innovation and innovation to win the market.
Qiuck deatail:
- Synchronization mechanism for multi-screen playing
- Powerful processing capability
- Comprehensive control plans
- Synchronous and asynchronous dual-mode
- Dual-Wi-Fi mode
Other Hardware Features
- 4 Ethernet ports, loading capacity of each port up to 2,300,000 pixels, with the maximum width of 4096 pixels and maximum height of 1920 pixels
- Wired Gigabit Ethernet
- Stereo audio output
- HDMI Loop
- HDMI input and auto full-screen display
- 2 USB ports allowing for USB playback
- Onboard light sensor connector allowing for automatic and scheduled brightness adjustment
Application:
Movie theaters, clubs, stages.
* Business Organizations:
Supermarket, large-scale shopping malls, star-rated hotels, travel agencies
* Financial Organizations:
Banks, insurance companies, post offices, hospital, schools
* Public Places:
Subway, airports, stations, parks, exhibition halls, stadiums, museums, commercial buildings, meeting rooms
* Entertainments:
Video processor,controller,video controller
Guangzhou Chengwen Photoelectric Technology co.,ltd , https://www.cwleddisplay.com