Can graphene bring "disruptive" changes to the LED industry?

How many seconds does a cell phone charge? The mobile phone screen can fold and bend. These may all be possible because of the publication of the "magic material" in twenty-first Century. One of the discoverers of graphene, Nobel prize winner in physics, Andre Haim, described: "graphene is very magical to many people just like Alice's fairyland." As the thinnest, hardest, conductive and thermal conductivity of a new nano material, graphene is known as "black gold", is the king of new materials, scientists even predict that graphene will completely change the twenty-first Century, and the new application of graphene has also emerged the thinnest bulb in history. It takes only a few seconds to recharge the phone. How magical is graphene, whether it will bring "disruptive" changes to production and life, and let us approach graphene. Graphene: what is this magical substance of the magic king of new materials? China is a large country of graphite resources, and one of the most active countries in graphene research and application development. Scientists and industry are focusing on it. Many domestic researchers and enterprises have already devoted themselves to the research of graphene application. With the progress of technology, the industrialization of graphene preparation and application will be launched worldwide. Graphene is actually a two-dimensional crystal separated from graphite material and composed of carbon atoms with only one layer of atomic thickness. Graphite used for pencil lead is equivalent to countless layers of graphene stacked together. "It is by far the thinnest and highest strength material in nature, which can be stretched indefinitely, bent to a large extent without breaking, and can resist great pressure." Andre Haim said that it also has extraordinary thermal conductivity and electrical conductivity. "Graphene has high conductivity and stable chemical structure. It is an ideal electrode material for mobile batteries and power supplies." Cheng Huiming, a researcher at the Chinese Academy of Sciences and a researcher at the Institute of metal research, Chinese Academy of Sciences, said graphene could be further integrated with electronic components and electronic devices to increase the storage rate of other electrical storage equipment. Another peculiarity of graphene is "zero permeability" - all gases and liquids can not penetrate. This also enables the graphene products to have the ability of "needle insertion not to enter, water to pour not to enter". It's far from amazing. Graphene is highly adsorptive. Scientists are studying it as a filtration device for desalination, sewage treatment and other fields. It has excellent transparency and is suitable for transparent electronic products. Here comes the key question. How large is the opportunity for graphene to enter LED lighting? What can graphene do in the field of LED lighting? Now let's take a look from the patent point of view. After a simple search in the Chinese database, it was found that the patent application of graphene in the field of lighting began in 2008, and the number of applications increased annually. Up to now, more than 1000 patent applications have been accumulated, of which more than 90% of the applicants come from domestic applicants. There are mainly two categories of H01L and F21S. Applications in the F21S field are basically domestic applicants, mainly using the thermal conductivity of graphene and coating on the surface of the light source or luminaire. There are more applicants, mainly based on the application of enterprises and individuals. In the field of H01L, the top ten applicants are mainly domestic research institutes and universities, with BOE, IBM and Samsung. Among them, IBM's application is mainly in the field of power semiconductor devices, and Samsung's application involves LED, OLED and display devices. With the patent 2-8 as the representative, a graphene material layer (3, 4, 6, 7, 8) is added to the original structure. Due to a series of advantages such as transparency, conductivity and heat conduction of graphene, the addition of the graphene can make up for the shortage, thus achieving significant technical effects, or directly using Shi Moxi material for the original material (patent 5). And achieved remarkable technical results. Most of these patents are relatively difficult. The strength of such patents is relatively low, and the strength of domestic enterprises in this type of patent applications is not weaker than that of foreign companies. Moreover, long-term foundry has accumulated a lot of relevant experience, and it is easier to combine with the characteristics of new materials, and propose improved technical solutions. The technology development of graphene in the field of lighting is still in the growth stage, and the leading edge of foreign companies is not obvious. Domestic enterprises and R & D institutions are stepping up their investment, believing that they have the opportunity to catch up with foreign technology and gain a foothold in the future market. Graphene is coming from the laboratory to people's lives. "New materials need huge demand in the future." For example, the application of new nano materials graphene can not be extinguished by water in dangerous chemical fire, but if graphene film is used. Using graphene materials, the phone may be thinner in the future than the hotel room card. " Wei Jie, Professor of economics and management, Tsinghua University, said. Graphene physiotherapy, thermal products, LED high thermal conductivity graphene composite, graphene bulletproof materials, graphene electric clothing and other 20 kinds of graphene products were launched. At present, Jiangsu Changzhou, known as the "Oriental carbon Valley" by the industry, already has the service platform of graphene industry technology research and development and business incubation; the Chongqing Institute of green intelligent technology of the Chinese Academy of Sciences has successfully created a 15 inch single-layer graphene mobile phone display screen; Graphene technology is quietly affecting production, life and other fields. "Using graphene characteristics to develop a new bulletproof vest, bullet proof inserts can achieve or even exceed the bulletproof effect of traditional products only 17 millimeters, and the weight can also be reduced by 20%." Shi Jianxin, chairman of Qingdao Hua Gao Mo Polytron Technologies Inc, said. For a long time, the endurance of smart phones has always been the biggest weakness. Song Lilu said that they developed a new type of lithium-ion lithium-ion batteries, the charging time is greatly reduced, the phone can be completed in a few minutes. Chen Chengmeng, deputy researcher of Shanxi Institute of coal chemistry, Chinese Academy of Sciences, pointed out that there are still problems in the development of graphene industry in China, such as high production cost, quality improvement, and insufficient interaction between upstream and downstream. "At present, the graphene industry lacks national standards, industry standards and enterprise standards. There is no scientific and unified view of the quality, preparation process, testing equipment and methods of graphene." Shi Jianxin said. Graphene industry must avoid the situation of rushing headlong into mass action. It needs the layout of the whole resources to form the polymerization effect. "Industrial development has its own laws. At present, the graphene industry is still in the initial stage of application, and in the process of quantitative change, we should have patience and nurture and care for the healthy and sustainable development of this new industry." Zhang Zhiqiang, Minister of energy saving technology and new materials division of Qingdao hi tech Zone, said. HUAWEI Technology Limited has announced its cooperation with the national graphene Research Institute of University of Manchester, UK, to study how to use the breakthrough results of Shi Moxi's field in consumer electronics and mobile communications equipment. It is envisaged that the new revolution will take place after the mobile phone changes from the functional machine to the intelligent machine. It will take time for the graphene age to come true. According to statistics, China's Graphite reserves account for 75% of the world's total reserves, accounting for 70% of the world's total output, and have the resource base for developing graphene industry. Up to now, China has more than 100 graphene enterprises and has formed industrial clusters in Changzhou, Wuxi, Qingdao and Shenzhen. However, many researchers pointed out that graphene, as a new material, has a bright future and a tortuous road to market. The first difficulty is constrained by material production. Liu Zhongfan, a member of the Chinese Academy of Sciences and professor of Peking University, said that to achieve the commercialization of graphene, it is necessary to produce low cost and high quality graphene products, but making graphene is not easy. At the technical level, there are still many challenges. Mass production or large scale production has not yet been realized.