Touch IC manufacturers and liquid crystal display module (LCM) companies will work together to develop integrated solutions for touch and LCD driver ICs. Processor and power management chip (PMIC) vendors are actively developing system-on-chips (SoCs) that can support touch sensing, making touch IC vendors threatened; To consolidate market position, touch ICs such as SynapTIcs In addition to the development of higher-order algorithms by over-coding, the major manufacturers are also committed to integrating touch and LCD driver ICs, with a view to creating products with lower latency and high noise immunity.
Stan Swearingen, senior vice president and chief technology officer of SynapTIcs Corporate Development Department, mentioned that algorithms are the most valuable asset of touch IC factories. Even though processors and PMIC companies obtain related technologies through licensing, they are very effective in actual operation. Touch ICs have the same level of performance and power consumption.
Stan Swearingen, senior vice president and chief technology officer of SynapTIcs Corporate Development Department, said that touch ICs must have high accuracy, high sensitivity, noise filtering mechanism and low power consumption design, and related companies must also consider touch IC and The data transmission structure of the processor and LCD screen is to reduce the delay; especially the algorithm that can support various sensing structures is the most important, and it is necessary to fully grasp the requirements of the panel and the LCM factory. Therefore, even though processors and PMIC vendors are planning to integrate the core of microcontrollers (MCUs) to divide up touch business opportunities, it is not easy to achieve success in the short term due to problems such as software development capabilities and rusty cooperation with panel end players.
It is reported that the touch IC is an MCU-based solution. As long as the processor and PMIC factory integrate the relevant hardware cores and algorithms, the touch signal sensing function can be realized. Therefore, processor manufacturers such as NVIDIA, and PMIC suppliers such as Qualcomm and Dialog have planned to further integrate touch functions to help system manufacturers reduce the bill of materials (BOM) cost.
However, Swearingen believes that touch ICs still have an important position in mobile devices at this stage and will not be easily replaced. Not only that, the world's top touch IC manufacturers are actively deploying On-cell, In-cell and OGS touch algorithm, and strengthen cooperation with LCM and touch module factories. Develop integrated solutions for touch and LCD driver ICs to improve the data transmission delay and power consumption of LCDs and touch panels, as well as enhance the ability of touch ICs to resist LCD or power noise. These developments are not developed by processors or PMIC companies. Can match.
Swearingen revealed that as touch technology becomes more complex, the design of touch IC integrated LCD driver IC will become a trend. At present, SynapTIcs and LCM factories such as Sony, AUO and Innolux, as well as Samsung, LG and HTC have closely cooperated with mobile device brands, and have developed the world's first touch and LCD control SoC, which has begun to provide samples. It is expected to be officially mass-produced in the fourth quarter of this year. The introduction of high-end mobile phones into On-cell, In-cell and other thin and light touch technology needs.
In fact, in order to enhance the product experience, mobile device manufacturers have accelerated the introduction of new functions such as Water Proof, Proximity Sensing, and stylus; this has caused many problems for stand-alone touch ICs. Technical challenges, let alone processors or PMICs that integrate basic touch sensing solutions with SoCs.
At the same time, with the support of Intel and Microsoft, notebook computers are expanding the introduction of touch control functions, accelerating the development of large and large screens supported by touch ICs. Swearingen emphasized that Synaptics' latest algorithm can support up to 15.6-inch screens and will be upgraded to more than 20-inches in the future. In addition, the company is also intensively developing unique software, such as the technology that can detect the touch signal on the back of the device. When the user holds the tablet or plug-in (Detachable) laptop in one hand, it will touch the thumb of the touch screen. Control signal isolation to avoid affecting the touch behavior of the other hand, thereby improving the convenience of operation of large and medium-sized touch devices.
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