Flat-panel TVs face major challenges in energy conservation and consumption reduction
Under the global demand for energy conservation and environmental protection, the consumer electronics industry is no exception. Flat-panel TVs, as an important part of the consumer electronics industry, face major challenges in energy conservation and consumption reduction. This article refers to the address: http:// The energy saving and consumption reduction of flat-panel TVs is a systematic project. As a material supplier for upstream enterprises, 3M Company not only directly participates in some green eco-environmental protection projects, but also utilizes the advantages of its innovative optical technology platform, and is committed to the illumination of LCD backlight modules. With the improvement of efficiency, an environmentally-friendly and energy-saving solution for liquid crystal display products has been introduced, and great efforts have been made for energy saving and consumption reduction of flat-panel TVs. Large size puts new demands on consumption reduction With the popularity of LCD TVs, consumers are increasingly demanding large-size LCD TVs, which puts higher demands on the brightness and energy efficiency of LCD TV backlights. In this regard, some TV manufacturers increase the screen brightness by increasing the transmittance of the liquid crystal panel itself, but this method sets a very high threshold for the capital and technology of the manufacturer because of the high technical content. Some merchants use the number or voltage of the lamp to increase the brightness of the backlight itself. This method solves the problem of low screen brightness, but greatly increases the power of the TV, thereby greatly increasing the power consumption of the TV and shortening it. Product life. As an upstream enterprise, we should start from the physical level to maximize the role of backlighting of CCFL (Cold Cathode Fluorescent Lamp) or LED (Light Emitting Diode), which can effectively solve the energy consumption problem of liquid crystal display products. From the current contact with our terminal manufacturers, more and more LCD TV panel manufacturers are adopting optical film products of VikuitiTM DBEF and VikuitiTM BEF core optical technology. The optical film refers to a film or a sheet which is applied to a backlight module of a liquid crystal panel to improve the luminous efficiency of the entire backlight system. There are mainly four types, including a general prism sheet, a multi-function prism sheet, and a reflective polarizer, each of which Optical films also have different market characteristics. For example, 3M's recently launched VikuitiTM optical film uses 3M multilayer film technology to composite a film structure of about 1000 layers in a thickness of less than 130 microns, and doubles the backlight of LCD TVs by recycling light. The luminous efficiency helps the whole machine manufacturer to greatly reduce the number of lamps (CCFL), that is, to reduce the power consumption by nearly 30% without reducing the original display effect. Moreover, the technology greatly reduces the number of lamps used, and also reduces the amount of mercury in the liquid crystal display, thereby realizing environmental protection. Optical film technology research and development is the key We know that the LCD screen itself does not emit light, and all need a light source to make it shine. Any kind of light source, whether CCFL or LED, requires auxiliary materials such as light guide plates and brightness enhancement sheets. In the upstream of the flat panel display industry chain, the main contributor to energy saving and consumption reduction of flat panel TVs is that the main functions of optical films and optical films are to condense light and improve brightness. According to market research firm DisplaySearch, the optical film shipment area for LCD TV panels in 2009 will grow 19% from last year. At the same time, the annual growth of global optical film shipments from now to 2012 will continue to exceed 10%. From 2006 to 2011, LCD TVs grew rapidly. In the past five years, if 3M VikuitiTM DBEF products are used in all LCD TVs sold, it is possible to save about 101.7 billion kWh of energy worldwide. In addition to improving the luminous efficiency of the backlight module, the optical film is also an important component for reducing panel cost and producing green panels. In 2009, the optical film shipment area increased significantly, but due to market competition and panel factory price reduction pressure, the optical film output value will decline by 15% in 2009. In the next few years, the output value of optical film will be a downward trend. It is this pressure that has prompted optical film manufacturers to continually improve their product and manufacturing technologies to produce products that are more environmentally friendly, energy efficient and cost effective. How to enhance their technical capabilities and seize this market opportunity is an important issue for every supplier. It is worth noting that 3M's Vikuiti optical film series products are widely used not only in LCD TVs, but also in liquid crystal displays such as mobile phones and computers. In the information age, the increasing popularity of IT electronic products and the Internet has made liquid crystal displays have the advantages of slimmer and stylish appearance, bright colors and low radiation. It has become a new generation of mainstream IT display products, so the energy saving of optical films is More important. Upstream material manufacturers should pay more attention to energy conservation In 2009, DisplaySearch estimated that the global LCD monitor shipments will be 170 million units per year. According to the current mainstream LCD monitor energy consumption, it is assumed that every LCD monitor in the world uses the LCD panel incremental membrane energy saving scheme to average 8 hours per day. Each display consumes 10 watts of power, saving 5 billion kWh of energy per year in the world. We have found that the world will save 2.85 million barrels of crude oil, save 1.98 million tons of coal, and reduce carbon dioxide emissions by 3.89 million tons, equivalent to 35.11 million trees. For battery-powered products, such as notebook computers, mobile phones, GPS (Global Positioning System), PSP and Palm Zhongbao, a series of LCD handheld devices, upstream material manufacturers should also improve the efficiency of use in the backlight system, significantly increase notebooks and The brightness of the phone screen. Reduce battery power consumption to extend battery life and make notebooks and phones more time-consuming. In fact, 3M has been committed to the development of low-energy products. In the past few years, 3M has specially produced prismatic optical film ThinBEF series and enhanced specular reflection sheet ESR series with a thickness of about 60μm, which is specially designed for small-size LCD screens. This idea will also continue in the future product development, a thinner optical film series is under development, and the current 35μm reflector ESR2 has been commercialized. Nowadays, more and more people are paying attention to green consumption, and the concept of energy saving and emission reduction is deeply rooted in the hearts of the people. Improving the energy efficiency of the display will not only greatly promote the energy saving and consumption reduction of China and even the global display. As an upstream company, 3M has long adhered to the "sustainable development" strategy, not only established an innovative environmental protection management system within the company, but also actively participated in social welfare and environmental protection through the establishment of 3M funds, in realizing the development of the company itself. At the same time, it has also become a champion of environmental protection.
This series features transparent LED screens, which are suitable for various indoor places and various stores, especially in storefronts with floor-to-ceiling glass windows. Installing the transparent screen against the glass wall has a very good effect. When the display is turned off, the audience can watch the indoor environment from the outdoors, and when the display is turned on, they can directly watch the content played on the display.It not only preserves the visibility in the store, but also can effectively display advertising videos to the other party, which is very practical.
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