At the "SID Display Technology 2010 Exhibition and Symposium (Display Week 2010)" organized by the International Society for Information Display (SID) not long ago, various optical touch technologies were released with the support of Microsoft Windows 7 for touch applications Splendid. At the same time, optical touch, as an emerging technology, has broad development space and application prospects. Therefore, technology companies around the world are entering the field from different directions. The digital waveguide touch developed by RPO is a highly differentiated optical touch technology. Its principle is to install polymer optical waveguides as sources on two adjacent borders of the touch screen, and they face each other on the surface of the flat panel display. The two frames transmit the infrared light emitted by the infrared light source; after the polymer optical waveguides on the two opposite frames receive the infrared light, they are collected and transmitted to the subsequent processing unit. When a touch occurs, the corresponding channel on the optical waveguide of the receiving end cannot receive infrared rays, and the subsequent processing circuit can perceive the coordinates of the touch point according to the signals of the two receiving end waveguides. The core of DWT technology is RPO's patented polymer optical waveguide material. The Australian National University spent five years developing the technology, which was mainly used in optical communications at the beginning. Since 2004, RPO has begun to apply these waveguide technologies to high-capacity, low-cost consumer electronics products. At present, RPO is accelerating to become a company that provides very efficient and low-cost optical touch solutions through the establishment of R & D centers and optical waveguide production plants in Australia and OEM partnerships in Asia. The company will fully commercialize the technology in early 2011 . Disinfection lamp,High Quality Disinfection lamp,Disinfection lamp Details, CN ZHONGSHAN G-LIGHTS LIGHTING CO., LTD. , https://www.glightsled.com
Aiming at these numerous optical touch technologies, the analysts of the professional technology market analysis and promotion company Beijing Huaxing Wanbang Management Consulting Co., Ltd. communicated with the executives of many exhibiting companies. After Microsoft released the Windows 7 operating system supporting multi-touch control in October last year, the development of optical touch control technology and products has greatly accelerated. The key in optical touch technology is the collection induction and positioning calculation of the light beam. A large number of development wars, patent wars and application customer competitions are carried out around its various companies.
Among the optical touch control technologies brought by many display manufacturers, the digital optical waveguide touch control technology (Digital Waveguide Touch, DWT) of American optical touch technology manufacturer RPO Co., Ltd. is very creative, and the company has caused widespread Attention. The company's technology was first developed by the Australian National University. It was originally planned to be used in optical communication equipment, and then RPO began to apply it to consumer electronics products. 
RPO's optical waveguide touch technology for portable electronic systems
At present, the main problems of the existing resistive and capacitive touch technologies on mobile devices include: due to the need to coat the sensing layer on the surface of the display screen (such as LCD), the brightness of the touch screen backlight has an attenuation of up to 20%. On mobile devices this can lead to a significant reduction in battery life and a darker display; capacitive touch technology is relatively expensive for larger screens, resulting in poor economics; resistive panels require high-pressure touch, which can cause scratches and Poor ergonomics, which also limit "finger rolling".
Even in various optical touch control technologies, DWT is a new type of touch screen technology platform. It has the same size as other optical touch technologies, and the larger the size, the better the economy and the need for coating on the display. In addition to the features, it also has the characteristics of adapting to smaller screens such as 3.5 inches and adapting to the touch of pens, fingers, gloved fingers, and various objects. It also brings finger touch and high-quality handwriting input to mobile devices.
"The main features of DWT technology include multiple simultaneous touch inputs, which can be touched and interacted with by any object; no ITO touchpad is covered with a coating and thus has a better optical effect without reducing brightness and contrast-which is important for reflective displays , Zero pressure touch allows scrolling, improved screen durability, etc. "said Mr. Dax Kujulj, Vice President of Business Development and Product Strategy at RPO. "It can be compatible with any lithographic display panel, without electromagnetic interference problems, easy to locate in application, and cost-effective in custom design and manufacturing." 
RPO's DWT optical waveguide solution for automotive electronics applications
At present, the touch screen market has exceeded US $ 3.6 billion, and DisplaySearch expects the market to grow to US $ 9 billion by 2015. Some of the key application system products in this market include: mobile phones, PDAs, game consoles, multimedia players, cameras, GPS systems, automatic control displays, e-books, handheld computers, graphics tablets and full-featured computers; and more professional Applications such as automatic teller machines (ATM), gambling machines, and touch information display machines (Kiosks). Microsoft ’s Windows 7 operating system supports touch applications, and it is bringing notebook and desktop computers to the wider adoption of touch systems.
"Our DWT digital optical waveguide touch technology can be ideally applied to various display devices, from mobile phones to notebook computers and higher-value professional touch screen applications. Our current target market includes portable electronic products, various computing devices and There are three parts to the automotive electronic display, "said Jason Schouw, RPO ’s vice president of sales and marketing. "We are working with world-class customers to develop two major projects, and customers will launch innovative products based on our DWT technology in the near future."
Hua Zhao Wanbang Chief Analyst Liu Zhaohui believes that optical touch control technology as an emerging field has very broad market prospects, but there is currently no absolutely dominant technology in the market, so the focus of competition at this stage is the patent layout, industrial chain layout and Application market layout. RPO has applied for hundreds of patents on digital optical waveguide touch technology, of which more than ten patents have been approved. At the same time, the company has increased its cooperation with first-class manufacturers globally, and fully commercialized its shipments in 2011. Therefore, judging from the case of RPO, as long as Chinese manufacturers find new working principles in the field of optical touch control, they can form technological and market breakthroughs.