Single-layer indium tin oxide (SITO) touch solutions will sweep the mobile phone market this year. Mainland China's first- and second-tier brand factories and white-brand manufacturers are working hard to sprint into the mid-to-low-priced smartphone market, so the cost requirements for touch panels have become increasingly stringent, driving single-layer indium tin oxide (SITO) transparent conductive Demand for shipment of touch solutions based on film structures has surged. At present, touch chip and module factories are competing to expand production. It is estimated that the penetration rate of SITO touch panels in the mobile phone market will reach more than 70% this year.
Bai Peilin, deputy general manager of marketing of Duntai Electronics, said that the rapid evolution of smart phones toward low and medium prices has led Chinese mainland mobile phone manufacturers to expand the use of lower-cost SITO touch panels to create more price-competitive products. This will greatly increase the market penetration of the SITO solution and erode the current mainstream DITO (Double ITO) market share, including SITO double glass (G / G) and single glass (OGS) architectures with glass as the main sensing layer , And the SITO monolithic film (G / F) and other programs of the thin film technology camp will be very profitable.
Bai Peilin pointed out that based on the current order demand of mobile device brand manufacturers and the stocking situation of touch chip and module factories, this year's SITO solution will account for 70% of the overall market shipments, gaining a dominant position in mobile touch technology.
Bai Peilin, deputy general manager of Duntai Electronics Marketing, believes that unlike the development of low- and medium-priced mobile phone touch technology, high-end models will mainly introduce In-cell and ultra-thin G / F / F solutions.
As its name implies, SITO uses a single layer of ITO to sense touch signals. It places the X and Y axis sensing wires on the same layer of ITO, and then laminates it with a glass substrate or polyester film (PET) to form a touch panel. In the application of the traditional DITO technology of double-layer ITO, SITO can reduce the ITO alignment, bonding process and material cost. The manufacturing process is relatively simple, which can meet the requirements of the BOM cost limit and rapid listing of low-cost smartphones. . However, SITO's concentration of the sensing line on one layer will cause the problem of excessive capacitance and reduced accuracy, and the greatly simplified panel structure will also reduce the strength, which is a technical barrier that needs to be overcome.
At this stage, touch chip vendors and module manufacturers are keeping up with the market pulse and are fully committed to the development of a new generation of SITO products, and actively improve yield and reliability, in the hope of attracting more mobile phone manufacturers. Bai Peilin revealed that almost all mobile phone manufacturers in mainland China will focus on the low-end market this year. Because product price considerations are better than performance and stability requirements, and the screen size is mostly set below 5 inches, there is no need to support multi-touch; therefore, Tun Thai has tailored a variety of low-cost SITO touch-sensing chips, including single-layer self-capacitance true two-point sensing, single-layer self-capacitance two-finger gesture sensing, and single-layer mutual capacitance multi-point sensing, etc., to fully attract mobile phone manufacturers.
In fact, Duntai has shipped more than 100 million touch chips in 2012. Especially, it has a high degree of mastery in the design needs of customers in mainland China, so it has won nearly 80% of the market share in the local mobile phone touch chip market. However, in 2013, the first- and second-tier brand factories will follow the trend to expand their product lineup, which has attracted Cypress, Atmel and other international touch chip manufacturers to compete for it, and may gradually divide Duntai High market share.
In this regard, Bai Peilin pointed out that the cooperation between Duntai and mobile phone factories in mainland China is very close. Many design plans are long-term plans and are continuing to increase. In addition, in the second half of this year, they will also announce the LCD driver The integrated single chip of IC plus touch chip further improves the cost performance of the product. Therefore, it is estimated that about 50% of the market share in mainland China will still be captured this year, and the company will continue to maintain its leading position.
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