G06F3/041662

System and method for detecting and characterizing touch inputs at a human-computer interface

One variation of a system for detecting inputs at a computing device includes: a substrate including a top layer, a bottom layer defining an array of support locations, and electrode pairs proximal the support locations; a touch sensor surface arranged over the top layer of the substrate; a set of spacers, each arranged over an electrode pair at a support location on the bottom layer of the substrate and including a force-sensitive material exhibiting variations in local bulk resistance responsive to variations in applied force; an array of spring elements coupled to the set of spacers, configured to support the substrate on a chassis, and configured to yield to displacement of the substrate downward toward the chassis responsive to forces applied to the touch sensor surface; and a controller configured to interpret forces of inputs on the touch sensor surface based on resistance values of the electrode pairs.

Sensor module and display device including the same
11507232 · 2022-11-22 · ·

A sensor module includes a base layer including a fingerprint sensing area, first touch electrode members arranged on the base layer along a first direction, and including a plurality of first touch electrodes connected to one another along the first direction, where each first touch electrode includes a first opening, second touch electrode members arranged on the base layer along a second direction crossing the first direction, and including a plurality of second touch electrodes connected to one another along the second direction, a first fingerprint electrode member disposed on the fingerprint sensing area, and including a plurality of first fingerprint electrodes connected to one another, and a second fingerprint electrode member disposed on the fingerprint sensing area, and including a plurality of second fingerprint electrodes connected to one another. The plurality of first fingerprint electrodes and the plurality of second fingerprint electrodes are disposed in the first opening.

Display device and method of driving the same

A display device includes a display portion, a display driver, a touch sensing portion, and a touch driver. The display portion includes data lines, scan lines, and pixels connected to the data lines and the scan lines. The display driver provides data signals to the data lines and sequentially provides scan signals to the scan lines. The touch sensing portion includes sensing electrodes. The touch driver senses a touch input based on a change of a capacitance between the sensing electrodes and calculates a movement speed of the touch input. When the movement speed of the touch input is greater than a reference speed, a first period in which the scan signals and the data signals are provided is reduced in a frame period in which a frame image is displayed.

Touch device, touch display device including the same and method of driving the same
11586333 · 2023-02-21 · ·

A touch device includes: a touch panel including a plurality of X-touch lines and a plurality of Y-touch lines crossing each other; an X-touch driving part simultaneously transmitting at least two of a plurality of X-self signals to the plurality of X-touch lines and sequentially transmitting a plurality of X-mutual signals to the plurality of X-touch lines; and a Y-touch driving part simultaneously transmitting at least two of a plurality of Y-self signals to the plurality of Y-touch lines and transmitting at least two of a plurality of Y-mutual signals to the plurality of Y-touch lines.

DISPLAY DEVICE AND DRIVING METHOD THEREOF
20230041419 · 2023-02-09 ·

A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.

Open close detection of foldable phone lid angle calculation

A method for operating an electronic device includes rotating a first portion of a flexible touchscreen with respect to a second portion of the flexible touchscreen around a folding axis; detecting, self-capacitances sensed in a folding area of the flexible touchscreen using a self-sensing scan, where a first side of the folding area is on the first portion of the flexible touchscreen and a second side of the folding area is on the second portion of the flexible touchscreen, and the first side and the second side are separated by a folding axis; determining, a current strength sensed by the flexible touchscreen in the folding area based on the self-capacitances in the folding area; and determining, a folding angle of the first portion of the flexible touchscreen with the second portion of the flexible touchscreen around the folding axis based on the current strength in the folding area.

CAPACITIVE TOUCH PANEL AND DISPLAY DEVICE

A touch panel include a cover member, a drive electrode, a pressure detecting electrode, and a position detecting electrode. The pressure detecting electrode and the position detecting electrode are alternately arranged in a first direction. The pressure detecting electrode includes a plurality of pressure detecting sections, arranged side by side in a second direction orthogonal to the first direction, that each independently detect a pressure. The position detecting electrode includes a plurality of position detecting sections, arranged side by side in the second direction, that each independently detect a touched position. The area of a pressure detecting section is larger than the area of a position detecting section.

Balanced mutual capacitance systems and methods

In some examples, a touch screen can include touch electrodes that can function as drive (Tx) electrodes and sense (Rx) electrodes during a touch sensing operation of the electronic device. The drive electrodes can include +Tx electrodes and −Tx electrodes that can receive drive signals that can have the same amplitude and frequency and opposite phases, for example. In some examples, the surface areas of the +Tx electrodes and the −Tx electrodes can be the same and the distances of the +Tx electrodes and −Tx electrodes from the Rx electrodes can be different. In some examples, the total charge coupled to a proximate or touching object can be zero, which can mitigate problems associated with ungrounded or poorly grounded objects in contact with the touch screen.

Display device and driving method thereof
11614829 · 2023-03-28 · ·

A display device according to some embodiments includes a display panel including a sensing area, touch electrodes in the sensing area, a fingerprint sensor overlapping at least a portion of the touch electrodes, and a sensor driver configured to drive the touch electrodes and the fingerprint sensor, wherein the sensor driver drives the touch electrodes in a first sensing mode or a second sensing mode depending on whether a foreign substance exists in a touch inputted to the sensing area, and drives the fingerprint sensor in a fingerprint sensing mode or a touch sensing mode.

TOUCH SCREEN PANEL FOR SENSING TOUCH USING TFT PHOTODETECTORS INTEGRATED THEREON
20230088505 · 2023-03-23 ·

A touch screen panel using a thin film transistor (TFT) photodetector includes a touch panel including a plurality of unit patterns for sensing light reflected by a touch by using a TFT photodetector including an active layer formed of amorphous silicon or polycrystalline silicon on an amorphous transparent material, and a controller configured to scan the plurality of unit patterns and read touch coordinates as a result of the scanning.