"It's as easy as a finger, and the control is extremely easy." Those who have used Samsung's latest GALAXY S4 mobile phone will find that the touch performance of the phone has been improved, and some functions are even more sensitive to the previous capacitive touch. Subversion of control operations. For example, the glove touch mode allows users to get a response even when touching the screen while wearing gloves, but according to the previous working method of capacitive touch screens-a low-voltage AC electric field is formed on the screen surface. When the finger touches, due to the electric field of the human body , A low voltage will be formed on the surface of the touch screen, the sensor can calculate the position of the touch point by sensing the change of the electric field, and then form a touch response; and when the user puts on the glove, the glove will cut off the human body electric field, so the touch capacitive screen will not react . New features have broken this limitation. In addition, GALAXY S4 comes with "gesture sensing", "intelligent scrolling" and other new touch modes also bring users a new touch experience.
It can be seen that touch technology is making a comprehensive breakthrough. Compared with the traditional mobile phone touch in the past, touch products are becoming more intelligent-no longer is the difference between single-point and multi-point touch, and it is not only a pile of more Multi-sensor is so simple, it has gone beyond the narrow scope of previous finger-controlled machines, and introduced a wider concept of human-machine interface, showing that the touch industry is moving towards a new stage of development.
Trend 1: products are smarter
Touch products are becoming more accurate, more reliable, and more responsive.
Touch control is becoming ubiquitous. Once consumers are used to poke a little bit on the screen, new generation information equipment, smart home appliances, public equipment, industrial control, automotive electronics, etc., all human-machine interactive devices are trying to integrate Touch functionality is included. Lin Lin, an analyst at Tuopu Industry Research Institute, said that in recent years, smart phones and tablet computers have led the trend, driving the entire touch industry to prosperity, across the territory of consumer electronics products, and penetrate into other industries. Therefore, the development of the entire touch industry is optimistic. It is expected that the shipment of touch panels in 2013 will be 1.5 billion pieces, and in 2015 will grow rapidly to 2.6 billion pieces. According to data from the Taiwanese Regional Intellectual Property Council (MIC), the smart phone touch IC market is expected to exceed 800 million units in 2014, and more and more touch ICs will be used in other tablet devices and consumer products.
With the expansion of the market and the improvement of technology, the touch industry is entering a new stage of development. "The needs of end users are changing, and touch products in the new stage will show more intelligent and low-cost features." Said Lin Hongguang, senior product marketing manager of the Smart Display Division of SynapTIcs, "First , Touch products are becoming more accurate, more reliable, and the response speed is also faster, such as SynapTIcs newly released second-generation ClearPad 3250 In-Cell solution, the reporting rate increased from 60Hz to 120Hz. Development tools with this Design Studio (DS4) can help users optimize the touch experience performance, customize touch solutions, and speed up the development cycle. The embedded SignalClarity technology can improve tracking accuracy, finger separation distance, and stability against noise, thereby improving user experience . "
Trend 2: Integration helps low cost
The solution that integrates and integrates the display driver IC with the touch function will be the future development direction.
Due to the extension of smart phones to the low-end market, from the perspective of market shape, the touch industry also shows the characteristics of low cost. In 2013, smart phones began to quickly extend to the low-end, and more and more low-cost smart phones under a thousand yuan, and touch manufacturers also had to pay attention to cost-sensitive applications and launch low-cost solutions. Binay Bajaj, director of marketing for Atmel's touch business, said that there are many new manufacturers and solutions on the market to deal with cost issues, and Atmel is working with some touch screen suppliers that have mass production capacity for medium and large touch screens to solve this problem. Lin Hongguang also agreed with the importance of cost control, saying that a solution that integrates and integrates display driver ICs and touch functions will be the future direction of development.
Many Asian display driver IC suppliers are also developing their own touch IC solutions, hoping to eventually integrate touch functions into existing single-chip driver ICs.
It is not only the integration of touch ICs and display driver ICs, but from the perspective of the new stage of the touch industry trend in the future, integration will prevail. At present, in order to save manufacturing costs and simplify system design, tablet computer manufacturers have begun to use multi-core processors with built-in touch algorithms to reduce the use of discrete touch ICs. The Tegra3 quad-core processor on the Nexus7 that Google recently launched has built-in DirectTouch algorithm developed by nVIDIA. In this regard, Lin Hongguang pointed out that such a trend does exist in the large-size market. In the future, touch manufacturers and processor manufacturers will have more cooperation. "As a touch manufacturer, the key is to master the core touch technology. After all, the touch function still exists, but it is from discrete to integrated. It turned out to be off-chip and was implemented on-chip. Functional research. "Lin Hongguang said.
Trend 3: The overall solution becomes the key
Enterprise users' demand for touch products is often customized, so touch manufacturers are committed to the preparation of overall solutions.
Affected by product intelligence and low cost, the touch market has shown a third development trend-the overall solution is popular. Integration is becoming more and more popular. Because enterprise users' demand for touch products is often customized, even after the module stage, they still need to be substantially modified. Therefore, mainstream international touch manufacturers are committed to preparing overall solutions. Control IC manufacturers have also reduced the act of selling touch ICs, and have instead provided overall solutions, moving towards touch modules. In addition, in the prevalence of low prices, the supply of touch ICs by various manufacturers is not enough to maintain high profits, so the development of modularization and the provision of overall solutions to increase profits have become a must. At present, the touch market is still led by SynapTIcs, Cypress, and Atmel in the United States. Although IC design manufacturers in Taiwan are latecomers, their strength cannot be underestimated.
Cypress ’s recently released PSoC 4 programmable system-on-chip product not only has enhanced CapSense capacitive touch sensing, but also integrates the ARM Cortex-M0 core, as well as intelligent analog components such as op amps integrated on the same chip , Low-power comparator, and fast successive approximation ADC. Taiwanese manufacturers in China are committed to entering the market of branded mobile phones, tablets and other consumer electronic products and home appliances through the overall solution of capacitive touch or optical touch modules.
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