Lg Display Co., Ltd.

Sun Yeop Kim

Young Joon Lee

Sung Yub Lee

Sang Soo Hwang

Jae Sung Yu

Hoon Bae Kim

Seong Kyu Kang

Nam Hun Oh

A liquid crystal display device is disclosed, which may compensate for a common voltage by reflecting all of noises by which a plurality of common electrodes are affected. The liquid crystal display device comprises a liquid crystal display panel including a plurality of data lines, a plurality of gate lines crossing the data lines, and a plurality of pixels provided at crossing regions of the data lines and the gate lines and including pixel electrodes and common electrodes to which a common voltage is supplied, wherein a common electrode of the common electrodes is shared by two or more of the plurality of pixels. The liquid crystal display panel also includes a plurality of feedback lines that overlap the common electrodes, the plurality of feedback lines receiving a variation of the common voltage that is reflected by the common electrodes onto the plurality of feedback lines.

Liquid crystal display device having a common voltage compensator

Disclosed is a display device with an integrated touch screen. The display device includes a panel configured to operate in a display driving mode and a touch driving mode, the panel including a plurality of driving electrodes, a plurality of sensing electrodes, and a plurality of data lines including a plurality of first data lines and a plurality of second data lines; and a display driver integrated circuit (IC) configured to apply data voltages to the plurality of first data lines and the plurality of second data lines during the display driving mode of the panel, and the display driver IC configured to apply a ground voltage to the plurality of first data lines and float the plurality of second data lines during the touch driving mode of the panel.

Display device with integrated touch screen and driving method thereof

Discussed is a display device with integrated touch screen and a method of driving the same. The display device includes a panel including a plurality of driving electrodes and a plurality of sensing electrodes, a touch IC, and a display driver IC. The touch IC generates a first driving pulse, and determines whether there is a touch using a plurality of sensing signals generated by the sensing electrodes. When the panel operates a touch driving mode, the display driver IC generates a second driving pulse with the first driving pulse to apply the second driving pulse to the driving electrodes and receives the sensing signals from the respective sensing electrodes to transfer the sensing signals to the touch IC.

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

A display device with integrated touch screen is provided. The display device may include a panel, a display driver IC, and a touch IC. The panel may include a plurality of driving electrodes and sensing electrodes. The display driver IC may apply a driving pulse to the driving electrodes and receive a plurality of sensing signals from the sensing electrodes when the panel operates in a touch driving mode, and, when the panel operates in a display driving mode, the display driver IC may apply a common voltage to the driving electrodes and sensing electrodes. The touch IC may generate the driving pulse and apply the driving pulse to the display driver IC, and may receive the sensing signals from the display driver IC to determine whether there is a touch. The touch IC may include a sensing unit sensing whether there is a touch.

Display device with integrated touch screen

A display device with integrated touch screen is provided. The display device may include a panel and a touch IC. The panel may include a plurality of driving electrodes and sensing electrodes. The touch IC may apply a driving pulse to the driving electrodes and receive a plurality of sensing signals from the sensing electrodes to determine whether there is a touch when the panel operates in a touch driving mode, and, when the panel operates in a display driving mode, the touch IC may apply a common voltage to the plurality of driving electrodes and sensing electrodes. The touch IC may include a sensing unit sensing whether there is a touch by use of a touch sensing reference voltage applied to the sensing unit and having the same level as a minimum voltage of the driving pulse.

Disclosed is a display device. The display device includes a panel, a display driver IC, and a touch IC. The panel includes a plurality of driving electrodes and a plurality of sensing electrodes. The display driver IC outputs a common voltage to the driving electrode and the sensing electrode in a display driving interval, outputs a reference voltage to the driving electrode during a touch non-sensing period in a touch driving interval, and outputs a driving pulse to the driving electrode to receive a sensing signal from the sensing electrode during a touch sensing period in the touch driving interval. The touch IC transfers a control signal and a selection signal for selecting the touch sensing period and the touch non-sensing period to the display driver, and senses whether there is a touch with the sensing signal and the reference voltage.

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Seoul, South Korea

Sun Yeop Kim