Abstract: A touch detection device includes a panel including a plurality of electrodes regularly arranged in rows and columns, and a sensor driver configured to perform a control operation so that a driving voltage having a waveform of a specific cycle is applied to the electrodes. The sensor driver applies a sensing signal to a specific row and apply a first driving signal to at least one row adjacent to the specific row, applies a second driving signal having a reverse phase to a phase of the first driving signal to consecutive rows adjacent to the at least one row, and applies a ground signal to a row immediately adjacent to the at least one row.

Abstract: A touch panel with a compensation touch sensor pattern and a compensation driving method thereof are disclosed. The touch panel includes: a plurality of touch sensors arranged in a matrix of a plurality of rows and a plurality of columns; a plurality of upper compensation touch sensors each disposed to be spaced apart from a corresponding touch sensor in an uppermost row among the plurality of touch sensors; and a plurality of lower compensation touch sensors each disposed to be spaced apart from a corresponding touch sensor in a lowermost row among the plurality of touch sensors. The touch panel with the compensation touch sensor pattern and the compensation driving method thereof can improve touch sensitivity of uppermost and lowermost touch sensors of a touch sensor array in matrix form by employing compensation touch sensors.

Abstract: A touch detection device includes a panel including a plurality of electrodes regularly arranged in rows and columns, a switch connected to electrodes arranged in a specific column through connection lines, and a sensor driving unit operably coupled to the switch and configured to perform a control operation so that a driving signal of a voltage waveform of a specific cycle is applied to the electrodes. Lengths of the connection lines are differently set according to positions of electrodes arranged in a specific row. The sensor driving unit applies a second driving signal of a reverse voltage waveform to an electrode of one of two rows adjacent to the specific row when an amount of electromagnetic interference (EMI) radiation of a specific connection line to which the driving signal is applied is less than or equal to a threshold.

Abstract: The present invention relates to a touch panel having a resistive compensation pattern. According to an embodiment of the invention, the touch panel includes: a plurality of touch electrodes arranged in a matrix of multiple rows and multiple columns; a plurality of sensor signal lines each connected to a corresponding one of the touch electrodes; and a touch drive integrated circuit (IC) configured to analyze a touch signal of the touch electrode transmitted through the sensor signal line to determine whether the touch electrode is touched, wherein a dummy signal line is constituted in at least one of the sensor signal lines to match resistance of the sensor signal lines belonging to the same row within an allowable tolerance. The present invention also includes embodiments different from the above embodiment.

Abstract: The present invention relates to a display device and, more particularly, to a touch panel having an improved electrostatic discharge (ESD) protection pattern for effective protection against electrostatic discharge. According to an embodiment of the invention, the touch panel having the electrostatic discharge (ESD) protection pattern includes: a plurality of sensing electrodes arranged in a matrix of multiple rows and multiple columns; a touch integrated circuit (IC) applying a sensing voltage to the sensing electrodes to detect the presence of a touch on the sensing electrodes; and a plurality of ground (GND) signal lines arranged in a predetermined pattern within the touch panel to protect the touch panel against electrostatic discharge.

Abstract: A touch detection device includes a panel including a plurality of electrodes regularly arranged in rows and columns, a multiplexer connected to electrodes arranged in a specific column through connection lines and configured to form a sensing channel by connecting the plurality of electrodes in a row or a column, and a sensor driving unit operably coupled to the multiplexer and configured to perform a control operation so that a driving signal of a voltage waveform of a specific cycle is applied to the electrodes. The sensor driving unit applies pulse-shaped driving signals having different driving frequencies to each specific row.

Abstract: Provided is touch signal detection apparatus configured to calibrate an error of a touch signal, the touch signal detection apparatus including a first digital-to-analog converter (DAC) configured to provide a first calibration voltage, a second DAC configured to provide a second calibration voltage, an attenuator configured to attenuate the second calibration voltage and provide the attenuated calibration voltage, an adder configured to add the first calibration voltage and the attenuated calibration voltage, a calibration amplifier configured to amplify a difference between a touch signal generated by detecting touch input and output of the adder with gain greater than 1 and output the difference, a sample-hold unit configured to sample and hold output of the calibration amplifier, and an analog-to-digital converter (ADC) configured to convert output of the sample-hold unit into a digital code.

Abstract: Provided is a touch signal detection apparatus configured to calibrate a quantization error of a touch signal including a first digital-to-analog converter (DAC) configured to provide a first calibration voltage, a first calibration amplifier configured to amplify and output a difference between a touch signal generated by detecting touch input and the first calibration voltage using gain greater than 1, a second DAC configured to provide a second calibration voltage, a second calibration amplifier configured to sample and hold a difference between output of the first calibration amplifier and the second calibration voltage, and an analog-to-digital converter (ADC) configured to convert output of the second calibration amplifier into a digital code, wherein bit resolutions of the first DAC and the second DAC are the same.

Abstract: A touch screen according to the present invention senses a touch in an idle mode by using an interrupt method of touch event capturing, not by a method of bottom up or top down polling lines of each row or column, thereby implementing an improved touch response speed and low power consumption.

Abstract: An object of the present invention is to efficiently reduce the number of signal lines of a control port and an input port of a sensor switch required for controlling a touch by supplying a programmable voltage from a touch drive IC TDI, not a separate external voltage source, as a voltage applied to a touch sensor. The present invention provides a touch screen which is capable of implementing low power consumption, low-resistance signal wiring, touch IC price reduction, and the like by forming a switching transistor of the sensor switch only with a P-type transistor manufactured in a Low Temperature Poly Silicon (LTPS) process, and driving the switching transistor without using a negative voltage (?V).

Abstract: The present invention relates to a design for optimally mounting a Touch Drive (IC) (TDI) signal line and a Display Drive IC (DDI) signal line of a display apparatus having a touch function. According to the display apparatus having a touch function and the method of mounting the signal line of the display apparatus according to the present invention, the TDI signal line and the DDI signal line are mounted so as not to overlap in the bending region on the same flexible substrate, thereby preventing the problem, such as cracks, in the related art. Further, according to the display apparatus having a touch function and the method of mounting the signal line of the display apparatus according to the present invention, it is possible to easily manufacture a full-screen display apparatus by reducing a length of a fan-out area of the TDI signal line.

Abstract: The present invention relates to a display device having a touch detection function, and relates to a touch pad which is capable of detecting a contact touch and a contactless touch, a method of detecting a touch by using the same, and a display device including the same. According to the touch pad, the method of detecting a touch by using the touch pad, and the display device including the touch pad of the present invention, it is possible to simultaneously detect a contact touch and a contactless touch, and increase touch sensitivity by additionally applying a driving back voltage.

Abstract: Disclosed herein are a touch detecting apparatus and a touch detecting method using a pixel or pixels in display devices including a means for applying an AC input voltage to a drive IC of the display device and detecting a change in touch capacitance between the pixel and an object in synchronization with a change in amplitude of the AC input voltage. In particular, the touch detecting apparatus using a pixel or pixels in display devices according to an exemplary embodiment of the present invention includes: a grayscale voltage generator applying a grayscale voltage to a source line and a sensing signal processor detecting a touch signal based on a feedback voltage of the grayscale voltage applied to the source line.

Abstract: Disclosed herein are a touch detecting apparatus and a touch detecting method using a pixel or pixels in display devices including a means for applying an AC input voltage to a drive IC of the display device and detecting a change in touch capacitance between the pixel and an object in synchronization with a change in amplitude of the AC input voltage. In particular, the touch detecting apparatus using a pixel or pixels in display devices according to an exemplary embodiment of the present invention includes: a grayscale voltage generator applying a grayscale voltage to a source line and a sensing signal processor detecting a touch signal based on a feedback voltage of the grayscale voltage applied to the source line.

Abstract: Disclosed herein are a display device having an embedded touch screen capable of preventing deterioration of image quality generated in the display device when a touch sensor and a sensor signal line are disposed in the display device and solving a problem that sensitivity of a detected touch signal is weakened due to a parasitic capacitance generated between the touch sensor and the sensor signal line and a driving signal line and components of the display device, and a method of manufacturing the same.

Abstract: Disclosed herein is a display device including a touch screen. An organic light emitting diode (OLED) display device including a touch screen according to an exemplary embodiment of the present invention includes: a plurality of pixels including organic light emitting bodies; and a common electrode which applies a common voltage to the organic light emitting body, in which a plurality of touch sensors and a plurality of sensor lines are formed in a mesh pattern in a partial region of the common electrode corresponding to a boundary region between the organic light emitting bodies. Further, the present invention includes exemplary embodiments different from the described exemplary embodiment.

Abstract: Disclosed herein is a display device integrated with a touch screen. According to the present invention, the display device integrated with a touch screen includes a first substrate and a second substrate disposed to be opposite to each other, having a liquid crystal layer interposed therebetween, in which the first substrate is formed with a color filter and a common electrode, a sensor pattern and a sensor signal line sensing a touch signal are formed beneath a transparent substrate of the second substrate, and a pixel electrode and a driving signal line driving the display device are formed beneath the sensor signal line.

Abstract: The present invention relates to a novel means and a novel method for detecting a capacitance connected to AC power, which detect a sensor capacitance on the basis of a charge sharing phenomenon occurring due to a difference between voltages applied to a sensor capacitor and an auxiliary capacitor connected to a detection system when an AC voltage applied to the detection system alternates. According to the present invention, since the sensitivity of a signal detected by a detection system is improved, a magnitude and a change amount of a sensor capacitance are stably acquired.

Abstract: Disclosed herein are a capacitive type touch detection means and a detection method using a new scheme, which detects a touch signal using a difference between voltage magnitudes detected by a touch detector according to whether a touch is generated, when an alternating voltage is applied to a line equivalent capacitor formed between a sensing pad which is detecting a touch signal and a non-sensing pad adjacent to the sensing pad. The touch detection means includes: a sensing pad configured to generate the touch capacitance Ct between a sensing pad and the touch input means; an alternating voltage configured to be applied to a line equivalent capacitor Ceq formed between the sensing pad and a non-sensing pad adjacent to the sensing pad; and a touch detector connected to the sensing pad to detect a difference in voltage generated according to whether the touch is generated by the touch input means.

Abstract: Disclosed herein is a touch panel disposed on a TFT substrate 120 included in a display panel 130 to detect a touch by a touch input means 2, an entire area of the TFT substrate 120 is provided with TFT signal lines 121 including gate signal lines 121a and source signal lines 121b and is divided into a display black-matrix area DBA without pixels and a display active area DAA provided with the pixels to display an image, and the touch pads 111 and the touch signal lines 112 are patterned only at an upper position of an area corresponding to the DAA not to be vertically opposite to the TFT signal line 121.