Lg Display Co., Ltd.

SeungSeok Oh

Sungsu Han

SangHyuck Bae

Suyun Ju

DoYoung Jung

HyungUk Jang

CheolSe Kim

YoungJoon Lee

SungYub Lee

HoonBae Kim

JuHan Kim

In a touch display device with a touch sensor structure in which two or more touch electrodes located in two or more subareas are electrically connected to each other via one touch line, itis possible to decrease the number of touch channels. With a touch sensor structure in which two or more touch electrodes are connected to each touch line in a touch electrode connecting structure capable of removing ghost data, it is possible to improve touch sensitivity greatly.

Touch display device for reducing ghost touch data

The present disclosure relates to touch display device and touch driving methods, and more specifically, to a touch display device and a touch driving method for accurately performing touch sensing by applying touch driving signals orthogonal to one another to adjacent touch electrodes.

Touch display device and driving method with orthogonal touch driving signals

Disclosed are a touch display device, a touch circuit, a pen, a touch system, and a multi-pen sensing method for receiving downlink signals output from two or more pens through one or more touch electrodes on a panel and distinguishably sensing the two or more pens based on unique information of the received downlink signals.

Touch display device, touch circuit, pen, touch system, and multi-pen sensing method

A backlight unit and a display device are provided. The duty or the like of a light source driving signal is adjusted so that a frequency component causing flicker to be visible, among frequency components of luminance appearing in a driving period of low-speed driving mode. Flicker is prevented or reduced in the low-speed driving mode. The display device is driven in the low-speed driving mode to reduce power consumption. The display device is driven at a lower display driving frequency in the low-speed driving mode, thereby improving the efficiency thereof.

Backlight unit and display device

A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

Touch display device, pen, touch system, touch circuit, and pen recognition method

A gate driver circuit, a display panel, and a display device. A number of emission start signals, with at least one a delay time, a pulse width, or a combination thereof, are supplied in a frame period in which display driving is performed at a low driving frequency. This decreases a degree by which luminance appearing in the frame period is reduced, or changes characteristics of frequency components of luminance, thereby preventing flicker from being observed. The display driving is performed at the low driving frequency reduces power consumption, and is performed at a lower driving frequency to improve the efficiency of the display device.

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Seoul, South Korea

SeungSeok Oh