Lg Display Co., Ltd.

SungHoon Lee

HoonBae Kim

SunYeop Kim

SeungMok Shin

SungChul Kim

Seongkyu Kang

CheolSe Kim

Youngwoo Jo

HongJu Lee

A touch display device accurately distinguishes a touch input performed using a finger and a touch input performed using a pen, such as a stylus, significantly reduce a touch sensing time, simultaneously perform a display operation and a touch sensing operation, and operate in a power saving manner. Touch sensing does not restrict an image display time of a display panel. Touch inputs are sensed without degradation in touch performance, which would otherwise be caused by parasitic capacitance occurring in electrodes within the display panel, such as data lines or gate lines.

Touch display device

A touch display device, a display controller, a driving circuit, and a driving method. Even in the case that a rate (or an input cycle) at which an image supply device supplies image data is not synchronized with a rate (or a beacon cycle) at which a beacon signal for pen sensing is output to the display panel, display processing and touch sensing (e.g., pen sensing or finger sensing) is performed ordinarily by controlling data output processing.

Touch display device, display controller, driving circuit, and driving method

A touch display device and a method of driving the same. A transition value due to polarity inversion of a data voltage supplied to a predetermined number of adjacent subpixels is reduced by varying an inversion pattern by analysis of image data, so that fluctuations in the voltage of touch electrodes due to the transition of the data voltage are minimized. Accordingly, noise due to fluctuations in the voltage of the touch electrodes is removed so as to improve the performance of touch sensing performed in a period in which display driving is performed.

Touch display device, data driver circuit, and method of driving controller

The present disclosure relates to touch display panels and touch display devices. More specifically, the touch display panels and touch display devices provided are capable of performing display driving and touch driving simultaneously or together through a ground modulation scheme. Further, by separating a power source for driving a display controller D-CTR from a power source for driving a touch controller T-CTR, and controlling respective power sources independently, it is possible to reduce power consumption. Also, by enabling a power source for driving a ground modulation circuit to be variable, it is possible to provide functions based on touch sensing under a condition of reduced power consumption.

Touch display panel and touch display device

A flexible printed circuit board having enhanced peeling force and a touch panel including the same are provided. The flexible printed circuit board (FPCB) includes a first bonding portion and a second bonding portion respectively bonded to a first circuit unit and a second circuit unit. The first bonding portion includes a pad corresponding portion corresponding to pads of the first circuit unit and dummy portions outwardly extending from both end portions of the pad corresponding portion. An FPCB wiring formation portion includes FPCB wirings respectively connected to the pads and extending from the first bonding portion to the second bonding portion and concave portions respectively disposed to be adjacent to the dummy portions and having a curved surface.

Growing community of inventors

Gyeongsangbuk-do, South Korea

SungHoon Lee