Patent application number | Description | Published |
20090194344 | Single Layer Mutual Capacitance Sensing Systems, Device, Components and Methods - According to one embodiment, there is provided a mutual capacitance sensing system comprising at least one substrate comprising an electrode array mounting surface. A plurality of drive electrodes are disposed in a first plurality of rows or columns positioned upon the electrode array mounting surface, where the drive electrodes in each row or column are electrically connected to one another. A plurality of sense electrodes are disposed in a second plurality of rows or columns positioned upon the electrode array mounting surface that is substantially perpendicular to the first plurality of rows or columns, and the sense electrodes in each column are electrically connected to one another. The sense and drive electrodes form an array disposed substantially in a single plane that is configured to permit at least one location corresponding to at least one finger placed in proximity thereto to be detected thereby. | 08-06-2009 |
20100026655 | Capacitive Touchscreen or Touchpad for Finger or Stylus - According to one embodiment, there is provided a mutual capacitance touchscreen or touchpad having combined finger navigation and stylus navigation and/or character entry capabilities. First and second pluralities of sense and drive electrodes are disposed in or on upper and lower substrates. The sense and drive electrodes form an array disposed substantially in two opposing planes that are configured to permit at least one location corresponding to a finger or stylus placed in proximity thereto to be detected thereby. The upper substrate is deflectable towards the lower substrate when the stylus is pressed downwardly thereagainst. | 02-04-2010 |
20110134050 | FABRICATION OF TOUCH SENSOR PANEL USING LASER ABLATION - Fabrication of a touch sensor panel using laser ablation is disclosed. The fabricated touch sensor panel can have its touch sensors formed on an under surface of its cover substrate. A fabrication method can include depositing a conductive layer onto a substrate, depositing a dielectric material onto the conductive layer, ablating the conductive layer to define different regions for the touch sensors, and depositing a conductive material on the dielectric material. Another fabrication method can include sputtering a conductive material onto a substrate at discrete locations on the substrate, printing a dielectric material on the conductive material at the discrete locations, depositing a conductive layer over the substrate, and selectively ablating the conductive layer at the discrete locations to define different regions for the touch sensors. The touch sensor panel can be incorporated into a mobile telephone, a digital media player, or a personal computer. | 06-09-2011 |
20120026099 | Fabrication of Touch Sensor Panel Using Laser Ablation - Fabrication of a touch sensor panel using laser ablation is disclosed. The fabricated touch sensor panel can have its touch sensors formed from conductive layers disposed on a surface such as an undersurface of the panel's cover substrate. A fabrication method can include ablating a first conductive layer to define the first part of the touch sensors and then ablating a second conductive layer proximate to the first conductive layer to define the second part of the touch sensors. The touch sensor panel can be incorporated into a mobile telephone, a digital media player, or a personal computer. | 02-02-2012 |
20120026123 | Compensation for Capacitance Change in Touch Sensing Device - This relates to compensation for undesirable capacitance changes in a touch sensing device, where the capacitance changes are not indicative of a touch at the device. The touch sensing device can include a touch sensor panel having touch sensors for sensing a touch at the panel, a flexible circuit for transmitting the sensed touch signal from the panel, and a touch controller for receiving and processing the transmitted signal. To compensate for the capacitance changes, the touch sensing device can include one or more reference conductive traces decoupled from touch sensors of the device to measure non-touch capacitances in the device. The touch sensing device can then adjust a touch signal from the touch sensors using the non-touch capacitance measurements to substantially reduce or eliminate the non-touch capacitances from the signal. | 02-02-2012 |
20120327040 | IDENTIFIABLE STYLUS - A stylus is disclosed. The stylus includes a shaft; a conductive tip at a distal end of the shaft; and control circuitry coupled to the conductive tip and configured to generate a modulated signal at the conductive tip to identify the stylus. The stylus can also include a switch coupled between the conductive tip and the shaft. The control circuitry can be further configured to control the switch to modulate a conductive path between the conductive tip and the shaft to generate the modulated signal. | 12-27-2012 |
20120327041 | ACTIVE STYLUS - An active stylus is disclosed. The stylus includes an electrode at a tip of the stylus; and powered circuitry coupled to the electrode and configured for capacitively coupling the electrode with a capacitive touch sensor panel. The powered circuitry can further include drive circuitry configured to output a drive voltage at the electrode and/or sense circuitry configured to sense a voltage received at the electrode. | 12-27-2012 |
20120327042 | STYLUS ORIENTATION DETECTION - Stylus orientation detection is disclosed. In an example, the orientation of a stylus relative to a contacting surface, e.g., a touch panel, can be detected by detecting a capacitance at one or more locations on the stylus relative to the surface, and then using the capacitance(s) to determine the orientation of the stylus relative to the surface. In another example, the orientation of a stylus relative to a contacting surface, e.g., a touch panel, can be detected by first detecting the orientation of the stylus relative to a reference, detecting the orientation of the contacting surface relative to the reference, and then calculating the orientation of the stylus relative to the contacting surface using the two detected orientations. | 12-27-2012 |
20120331546 | INTELLIGENT STYLUS - An intelligent stylus is disclosed. The stylus can provide a stylus condition in addition to a touch input. The stylus architecture can include multiple sensors to sense information indicative of the stylus condition, a microcontroller to determine the stylus condition based on the sensed information, and a transmitter to transmit the determined condition to a corresponding touch sensitive device so as to cause some action based on the condition. | 12-27-2012 |