Parade Technologies, Ltd.

Roel Coppoolse

Zhengyu Yuan

Ming Qu

Denis Ellis

Xiang Chen

Quan Yu

Yi Ling

Ross Martin Fosler

Zhiqiang Huang

Pete Vavaroutsos

An electronic device includes a capacitive sense array and is coupled to a stylus including a conductive tip and a conductive wire module. The conductive tip and wire module of the stylus are driven by a tip drive signal and a wire drive signal simultaneously. The tip and wire drive signals have a single stylus drive frequency. While the conductive tip and wire module are driven by the tip and wire drive signals, the electronic device scans the capacitive sense array to obtain a plurality of capacitive sense signals from a plurality of sense electrodes of the capacitive sense array. The electronic device generates a composite image of the capacitive sense array based on the plurality of capacitive sense signals and processes the composite image to determine one or more orientation parameters (e.g., a tilt angle) of the stylus with respect to a surface of the capacitive sense array.

Methods and systems for determining stylus orientation information

This application is directed to intra-panel communication in a touch display device in which a touch-integrated timing controller (TTCON) is coupled to touch-embedded source drivers (TSDs) via a plurality of forward links and a set of backward links. The forward links include a first subset of display forward links and a second subset of touch forward links. The TSDs are electrically coupled to a display panel including a plurality of display pixels and a plurality of touch sensors. The TTCON sends a display drive signal including display content data and display control data over the display forward links, and sends a touch control signal including an instruction to initiate an operation mode over the touch forward links. Upon receiving the touch control signal, the TSDs identify the instruction to initiate the operation mode, generate touch data accordingly, and return the touch data to the TTCON via the backward links.

Intra-panel interface for concurrent display driving and touch sensing in touchscreen displays

This application is directed to a display device that integrates a two-dimensional array of display elements and a two-dimensional array of capacitive sense elements. A common electrode layer includes a two-dimensional array of common electrodes, which are used in both display elements and capacitive sense elements. One or more sensing control interconnects and a plurality of driving interconnects are arranged in parallel with each other and on top of a first row of common electrodes. Each sensing control interconnect is configured to provide a touch sensing control signal to enable/disable electrical access to common electrodes in the first row of common electrodes in a touch sensing mode. Each common electrode in the first row is electrically coupled to two or more respective driving interconnects in a display driving mode, while each of the plurality of driving interconnects is electrically coupled to a single respective common electrode.

Common electrode driving in integrated display arrays

A touch panel display subsystem for bi-directional intra-panel communication includes a forward link and a backward link between a timing controller and one or more source drivers. The forward link includes a timing controller transmitter in the timing controller to receive video signal, video control signal and touch control signal, and to transmit over the forward link in the format of frame based packet, and a source driver receiver in the source driver to receive video signal, video control signal and touch control signal over the forward link. The backward link includes a source driver transmitter in the source driver to receive the touch sensor data and transmit the touch sensor data over the backward link when the backward link is enabled, and a timing controller receiver in the timing controller to receive the touch sensor data over the backward link when the backward link is enabled.

Growing community of inventors

San Jose, CA, United States of America

Roel Coppoolse