Lg Display Co., Ltd.

Seung Eun Pyo

Sung Chul Kim

Sung Yub Lee

Jeong Seop Lee

A display device with an integrated touch screen and a method of driving the same are provided. The display device includes a panel configured to operate in a first display operation period, a first touch operation period, a second display operation period, and a second touch operation period, and include a touch electrode overlapping a plurality of gate lines and a plurality of data lines, and a gate driver configured to sequentially apply a gate-on voltage to an odd-numbered gate line among the plurality of gate lines during two horizontal periods in the first display operation period, and in the second display operation period, sequentially apply the gate-on voltage to an even-numbered gate line among the plurality of gate lines during two horizontal periods.

Display device with integrated touch screen and driving method thereof

Discussed is a display device with integrated touch screen including a panel including a plurality of electrodes; a data driver for converting RGB data into a data voltage, and supplying the data voltage to data lines; a gate driver for sequentially supplying a gate-on signal to n-numbered gate lines to apply the data voltage to pixels of the panel when a driving mode of the panel is a display driving mode; and a touch IC for generating a touch scan signal and supplying the touch scan signal to the plurality of electrodes of the panel when a driving mode of the panel is a touch driving mode, wherein the gate driver sequentially supplies the gate-on signal to the gate lines, and then simultaneously supplies the gate-on signal to the gate lines, and the data driver supplies the data voltage of the same level to the data lines.

Display device with integrated touch screen and method of driving the same

A touch screen display device is discussed. The device uses common electrodes, which are formed for display images, as touch electrodes. In a display interval, the common electrodes receive a common voltage and allow images to be displayed. In a touch sensing interval corresponding to a non-display interval of a single frame of plural frames, the common electrodes are driven as the touch electrodes and allow a touch position to be sensed. When the touch sensing interval is terminated, the data voltages which had been applied to the data lines before the touch sensing interval are re-applied to the data lines. As such, when a succeeding display interval starts after the touch sensing interval, the reduction of charging voltage in a pixel can be prevented or reduced. Therefore, a picture fault or an image fault can be prevented.

Touch screen display device with in-set signals, driver circuit for the touch screen display device, and method for driving the touch screen display device

Touch screen display device with in-set signal controller

Disclosed is a display device with integrated touch screen that may include a panel including a plurality of electrodes; a touch IC that applies a touch scan signal to the plurality of electrodes during a predetermined period of an n&#x2212;1th frame ('n' is an integer above 2), and checking whether or not there is a touch input in the panel through the use of information received from the plurality of electrodes; and a display driver IC that applies a common voltage to the plurality of electrodes during a first period of an nth frame if there is the touch input in the panel, and applying the common voltage to the plurality of electrodes during a second period of the nth frame if there is no touch input in the panel, wherein the second period is longer than the first period.

Display device with integrated touch screen having varied touch driving time and method of driving the same

A display device comprises a timing controller and a touch sensing unit. The timing controller drives a display panel such that a display mode for displaying an image in the display panel and a touch mode for sensing a user' s touch are alternately driven. The touch sensing unit differentially applies DTX (display touch crosstalk) compensation values by compensation area to sense the user' s touch in the touch mode, each of touch sensing block being a sensing unit for a user' s touch. Each compensation area is set based on a distance between a data driver and the compensation area. Each DTX compensation value is a value for compensating for an error of touch data caused by changes in respective grayscale values applied to pixels corresponding to a specific touch sensing block. The touch sensing blocks are divided in a column direction depending on arrangement of multiplexers in the data driver.

Display device including touch screen compensation and touch sensing method thereof

The display device with integrated touch screen includes a panel configured to time-division operate during first and second display durations and first and second touch durations at every frame, a touch IC configured to apply a touch scan signal to a plurality of electrodes to allow the panel to perform touch driving during the first and second touch durations, and a display driver IC configured to, when the first touch duration of an n+1st frame is started, transfer display information about the second display duration of an nth frame and display information about the first display duration of the n+1st frame to the touch IC, and when the second touch duration of the n+1st frame is started, transfer display information about the first display duration of the n+1st frame and display information about the second display duration of the n+1st frame to the touch IC.

Disclosed is a display device. The display device includes a timing controller temporally dividing one frame period and driving a display panel such that a display mode for displaying an image in the display panel and a touch mode for sensing a user's touch are alternately driven, and a touch sensing unit setting a plurality of compensation areas including at least one or more touch sensing blocks, and differentially applying DTX compensation values by compensation area to sense the user's touch in the touch mode. Each of the touch sensing blocks is a sensing unit for a user's touch.

Display device and touch sensing method thereof

Disclosed are a display device integrated with a touch screen and a method of driving the same, the display device comprising: a touch panel comprising a touch electrode which is disposed in each of a plurality of pixels defined by intersections between a plurality of gate lines and a plurality of data lines; a display driver supplying data voltages for displaying an image to the respective pixels during a display period, and supplying an initialization data voltage for initializing a capacitance of the touch electrode to each pixel during a touch sensing period; and a touch driver sensing the capacitance of the touch electrode to detect a touched position during the touch sensing period. The display device integrated with the touch screen and the method of driving the same according to the present invention initialize capacitances of the touch electrodes to the same value irrespective of image data of the pixels being changed from black to white during the display period, thus preventing the occurrence of a touch error due to a screen change.

Growing community of inventors

Incheon, South Korea

Seung Eun Pyo