Abstract: A display device having a built-in touchscreen and a driving chip, a circuit film, and a chip-on-film (COF) type driving circuit included in the display device. The COF type driving circuit performs data driving and touch driving in a combined manner. A source driving circuit outputs image data voltages through data channels. At least one touch driving circuit outputs touch driving signals through touch channels. The source driving circuit and the at least one touch driving circuit are mounted on an integrated circuit film. Data channel lines electrically connected to the data channels and touch channel lines electrically connected to the touch channels are disposed on the integrated circuit film. The noise avoidance line disposed on the integrated circuit film is located outward of an at least one outermost touch channel line.

Abstract: A touch sensing circuit is configured to supply touch drive signals to electrodes of a touch sensitive display device and detect corresponding touch sense signals from the electrodes in response to the supplied touch drive signals, a touch sense signal indicating a change in self-capacitance of a driven electrode in response to a touch input on the driven electrode. The touch sensing circuit is further configured to integrate, for a first predetermined duration of time, a measure of each of the touch sense signals, to generate a first integrated signal corresponding to each touch sense signal; integrate, for a second predetermined duration of time, the first integrated signal, to generate a second integrated signal corresponding to each touch sense signal; and determine presence of one or more touch inputs on one or more of the electrodes based on the second integrated signal.

Abstract: A touch sensing circuit is configured to supply touch drive signals to electrodes of a touch sensitive display device and detect corresponding touch sense signals from the electrodes in response to the supplied touch drive signals, a touch sense signal indicating a change in self-capacitance of a driven electrode in response to a touch input on the driven electrode. The touch sensing circuit is further configured to integrate, for a first predetermined duration of time, a measure of each of the touch sense signals, to generate a first integrated signal corresponding to each touch sense signal; integrate, for a second predetermined duration of time, the first integrated signal, to generate a second integrated signal corresponding to each touch sense signal; and determine presence of one or more touch inputs on one or more of the electrodes based on the second integrated signal.

Abstract: A touch sensing device includes a display panel including a touch screen on which a plurality of touch sensors are formed, a touch sensing circuit including at least one sensing unit which receives self capacitance signals of a first touch sensor and a second touch sensor adjacent to the first touch sensor at differential input method and detects changes in capacitances of the first and second touch sensors, and a touch controller which analyzes touch raw data received from the touch sensing circuit and calculates coordinates of a touch input position. The sensing unit generates delays corresponding to a difference between the capacitances of the first and second touch sensors, accumulates the number of delays, converts an accumulated value of the delays into digital data, and generates the touch raw data.

Abstract: A touch sensing device includes a display panel including a touch screen on which a plurality of touch sensors are formed, a touch sensing circuit including at least one sensing unit which receives self capacitance signals of a first touch sensor and a second touch sensor adjacent to the first touch sensor at differential input method and detects changes in capacitances of the first and second touch sensors, and a touch controller which analyzes touch raw data received from the touch sensing circuit and calculates coordinates of a touch input position. The sensing unit generates delays corresponding to a difference between the capacitances of the first and second touch sensors, accumulates the number of delays, converts an accumulated value of the delays into digital data, and generates the touch raw data.