The ICN85 series of touch chips is a strategic product that has been launched into the touch market by the North after the ICN83 series, which has been certified by the major platforms in the market and mass-produced in large quantities. Based on the experience and technology accumulated in the ICN83 series of products, the ICN85 series adheres to the "customer experience as the core" design idea, and has made remarkable innovations in noise suppression, frequency hopping mode, algorithm and power consumption, and the processing performance is very high. The same kind of touch chip widely used in China ideally meets the needs of users in waterproof, floating, wearing gloves, proximity sensing and extreme temperature difference. It perfectly supports ultra-sensitive, simple gestures and wearable three fashion applications.
Supports ultra-sensitive touch applications that support touch applications with gloves, passive pens, keys, knives, and other metal objects. The ICN85 series uses its own innovative technology to further reduce the noise floor of the touch screen. It can support ultra-fine passive pens, making the touch operation more in line with human handwriting habits.
Based on the intelligent gesture recognition algorithm developed by Jiu Chuang for a long time, ICN85 also fully supports the popular simple gesture application of smart terminal devices on the market - using simple gestures to directly enter the corresponding application on the screen (such as drawing a "C in the standby interface" "You can directly enter the camera application." Abandon the original cumbersome operation process, the success rate of gesture recognition is higher than 98%.
In addition, the ICN85 series of touch chips support the hottest wearable applications on the market, and the curved TP allows for a more casual wear design. At the same time, the high signal-to-noise ratio (SNR) and the algorithm designed for the arc surface ensure that the precise coordinates (center coordinate deviation ≤ 1mm) can still be calculated when the contact area of ​​the finger is constantly changing when touched on the arc surface.
Figure 1: ICN85 series supports ultra-sensitive, simple gestures, wearable three fashion applications
The ICN85 series adopts a mutual capacitance + self-capacitor architecture, which can support up to 56 channels, and is equipped with a 32-bit MCU and DSP. Its digital processing capability is equivalent to 20 times the single 8-bit/near-fold double 8-bit MCU. The ICN85 series of touch chips use an innovative sine wave operation mode to improve the signal-to-noise ratio and detection efficiency, and can obviously "resist" channel noise. Under the same module conditions, the user experience of the ICN85 series is better.
In order to cope with difficult problems such as charger interference, LCM, RF interference, etc., ICN85 series touch chip adopts unique narrow-band filter technology, 1KHz ultra-fine controllable driving frequency, which greatly improves the chip's interference suppression ability and reaches the international first-line brand. The level of products, overall performance and customer experience are superior to domestic mainstream competitors.
At the same time, ICN85 realizes the independent setting of the signal gain of each TX/RX crosspoint under the high-impedance TP module. This innovation combines the powerful algorithm of the self-developed research to better solve the TP consistency brought by the large impedance. Problems and can improve TP module yield. Achieve better touch effects with stable and reliable performance, and bring a good experience to users.
Figure 2: Block diagram of the ICT85 series touch chip architecture
The ICN85 series comprehensively improves the signal-to-noise ratio (SNR) and differential signal analysis functions of the chip. It is based on mutual capacitance detection, supplemented by self-capacitance detection, which has excellent waterproof performance and effectively suppresses palm pressure and large area noise. Multi-point application under the In-cell module. The ICN85 series supports the current mainstream Add-On modules, including OGS, single-layer GF/GG mutual capacity, G1F, GF2, GFF, and so on. The solution combines the three needs of ultra-thin, narrow-edge and low-cost, and will bring a cost-effective customer experience to terminals such as smartphones and tablets.
Figure 3: The ICN85 series uses self-integration technology to meet the needs of users in a variety of environments.
The main features of the CN85 series support true 10-point touch and support 4.0 - 10.1" CTPM
Built-in high performance 32-bit MCU+DSP
Applicable to DITO/SITO/OGS CTPM module supports LCM full fit support channel number: up to 56 channels (supports 16:9, 4:3 applications)
Support COF/COB applications support I2C/SPI interface high reporting rate: 60~200Hz
Effectively suppress RF, LCM interference, stronger resistance to charger interference, mutual capacitance + self-contained architecture, achieve excellent waterproof performance, support glove touch proximity sensing function
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