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1. 发明申请

US20190050087A1 COMMON MODE NOISE REDUCTION IN CAPACITIVE TOUCH SENSING 审中-公开
公开(公告)号：US20190050087A1
公开(公告)日：2019-02-14
申请号：US16162925
申请日：2018-10-17
申请人： STMICROELECTRONICS ASIA PACIFIC PTE LTD
发明人： Praveesh CHANDRAN , Lokesh Kumar KORAPATI , Mythreyi NAGARAJAN
IPC分类号： G06F3/044 , G06F3/041
CPC分类号： G06F3/044 , G06F3/0418 , G06F2203/04102
摘要： The present disclosure is directed to a system and method to remove common mode noise projected onto a touch sensor array from a display. The system is configured to activate two rows of electrodes at the same time, while coupling remaining rows of electrodes to ground. A first one of the two activated rows is used for detection of a touch and a second one of the two activated rows is used to detect common mode noise from the display. The common mode noise detected by the second row is removed from signals received from a plurality of columns of the touch sensor array.

2. 发明申请

US20190121488A1 SUPPORT OF NARROW TIP STYLUSES ON TOUCH SCREEN DEVICES 审中-公开
公开(公告)号：US20190121488A1
公开(公告)日：2019-04-25
申请号：US16223428
申请日：2018-12-18
申请人： STMicroelectronics Asia Pacific Pte Ltd
发明人： Praveesh CHANDRAN , Manivannan PONNARASU , Mythreyi NAGARAJAN
IPC分类号： G06F3/041 , G06F3/0354 , G06F3/044
摘要： A touch screen controller identifies an island in a matrix of acquired touch data values. A first sharpness of the island is calculated and a second sharpness of the island is calculated if the calculated first sharpness is greater than a sharpness threshold. A dynamic strength threshold is then determined as a function of the second sharpness if a variance of the island is greater than a dynamic variance threshold. A determination is then made that the identified island is a valid stylus island if a peak strength of the island is greater than the dynamic strength threshold.

3. 发明申请

US20140197880A1 SINGLE LAYER SENSOR PATTERN 有权
标题翻译：单层传感器图案
公开(公告)号：US20140197880A1
公开(公告)日：2014-07-17
申请号：US13739112
申请日：2013-01-11
申请人： STMICROELECTRONICS ASIA PACIFIC PTE. LTD.
发明人： Chee Yu NG , Mythreyi NAGARAJAN
IPC分类号： H03K17/96
CPC分类号： H03K17/9622 , G06F3/044 , H03K2017/9602
摘要： A single ITO layer design for a touchscreen panel incorporates a matrix of sensor cells formed from a single ITO layer of capacitive sensor pads, sensor bars, force lines and sense lines. Columns of multiplexed force lines are connected to rows of sensor pads to form force trees such that the force line of the end pair of sensor pads has a wide track, with the force lines of each subsequent pair of sensor pads having a reduced track width. Disposed between the columns of force trees, the matrix of sensor cells also includes columns of sensor bars connected to control circuitry via sense lines. The control circuitry applies a signal to the force trees to generate capacitance between rows of sensor pads and adjacent sensor bars. The control circuitry senses changes in the capacitance and resolves the location of a user touch in the matrix of sensor cells.
摘要翻译：用于触摸屏面板的单个ITO层设计包括由电容式传感器焊盘，传感器棒，强制线和感测线的单个ITO层形成的传感器单元矩阵。复合力线的列连接到传感器垫的行以形成力树，使得传感器焊盘的端对对的力线具有宽的轨迹，每个后续传感器对的力线具有减小的轨道宽度。设置在力树柱之间，传感器单元的矩阵还包括通过感测线连接到控制电路的传感杆的列。控制电路向力树施加信号以在传感器垫和相邻传感器条之间的行之间产生电容。控制电路感测电容的变化，并且解决用户触摸传感器单元矩阵中的位置。

4. 发明申请

US20170185182A1 COMMON MODE NOISE REDUCTION IN CAPACITIVE TOUCH SENSING 审中-公开
公开(公告)号：US20170185182A1
公开(公告)日：2017-06-29
申请号：US14982349
申请日：2015-12-29
申请人： STMICROELECTRONICS ASIA PACIFIC PTE LTD
发明人： Praveesh CHANDRAN , Lokesh Kumar KORAPATI , Mythreyi NAGARAJAN
IPC分类号： G06F3/044 , G06F3/041
CPC分类号： G06F3/044 , G02F1/133305 , G02F1/13338 , G06F3/0418 , G06F2203/04102
摘要： The present disclosure is directed to a system and method to remove common mode noise projected onto a touch sensor array from a display. The system is configured to activate two rows of electrodes at the same time, while coupling remaining rows of electrodes to ground. A first one of the two activated rows is used for detection of a touch and a second one of the two activated rows is used to detect common mode noise from the display. The common mode noise detected by the second row is removed from signals received from a plurality of columns of the touch sensor array.

5. 发明申请

US20170038883A1 ELECTRONIC DEVICE WITH VALID SINGLE FINGER TOUCH DETECTION AND RELATED METHODS 审中-公开
标题翻译：具有有效单手指触摸检测的电子设备及相关方法
公开(公告)号：US20170038883A1
公开(公告)日：2017-02-09
申请号：US14816135
申请日：2015-08-03
申请人： STMICROELECTRONICS ASIA PACIFIC PTE LTD
发明人： Mythreyi NAGARAJAN , Manivannan Ponnarasu
IPC分类号： G06F3/041 , G06F3/044
CPC分类号： G06F3/044 , G06F3/0418 , G06F2203/04104
摘要： An electronic device may include a touchscreen having an array of finger touch sensitive areas, and a controller coupled to the touchscreen. The controller is configured to read touch values from the array of finger touch sensitive areas, and determine when the read touch values define a valid single finger touch pattern having lower touch values within adjacent higher touch values, and, if so, treating the read touch values as being representative of a single finger touch, and, if not, causing a finger separation determination.
摘要翻译：电子设备可以包括具有手指触摸敏感区域阵列的触摸屏和耦合到触摸屏的控制器。控制器被配置为从手指触摸敏感区域的阵列读取触摸值，并且确定读取的触摸值何时定义在相邻较高触摸值内具有较低触摸值的有效的单个手指触摸模式，并且如果是，则对该读取触摸进行处理值代表单个手指触摸，如果不是，则进行手指分离确定。

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