Lg Display Co., Ltd.

HyunWoo Jang

SuWon Lee

JaeKyu Park

HyeongWon Kang

Youngwoo Jo

HongJu Lee

HoonBae Kim

SunYeop Kim

SangHyuck Bae

Seongkyu Kang

Suyun Ju

DoYoung Jung

HyungUk Jang

KiYong Kim

Juhong Kim

Kyungjin Jang

JuneGun Chung

SunChul Kim

Discussed is a touch display device, including a display panel on which a touch screen panel including a plurality of touch electrodes is embedded, and a touch control unit configured to generate a pen detection signal corresponding to a pen driving signal of a stylus from a touch sensing signal transmitted from the display panel, and generate a touch driving signal synchronized with the pen driving signal of the stylus by using the pen detection signal.

Touch circuit, touch display device, and touch driving method thereof, for generating touch driving signal in sync with pen driving signal

A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.

Display device including touch sensor and touch sensing method for the same

Embodiments of the present disclosure relate to a touch display device, a touch circuit and a touch driving method thereof, and more particularly, a touch display device, a touch circuit and a touch driving method thereof enable to reduce effectively a ghost phenomenon in touch electrode groups by dividing a plurality of touch electrodes into a plurality of touch electrode groups with same patterns. The touch display device may include a display panel including a touch electrode group in which a plurality of long touch electrodes with long length and a plurality of short touch electrodes with short length in a first direction are alternately arranged in a second direction; and a touch circuit sequentially performing a self-capacitance sensing operation and a mutual-capacitance sensing operation for the touch electrode group.

Touch display device, touch circuit and touch driving method thereof

Provided are a touch display device and a touch driving method thereof. Touch electrodes are grouped into a touch sensing block and non-touch blocks. The touch electrodes in the touch sensing block and the touch electrodes in the non-touch blocks are sensed at different sensing ratios. Power consumption is efficiently managed and sensitivity in touch sensing is maintained.

Touch display device and touch driving method thereof

A display device includes a display panel in which a plurality of subpixels are disposed and the display panel comprises a first active area in which N number of subpixels among the plurality of subpixels are disposed, and a second active area in which M number of subpixels among the plurality of subpixels are disposed and is located outside of the first active area, and a first image and a second image are displayed on the subpixels disposed in the first active area, and the first image and a blank image are displayed on the subpixels disposed in the second active area.

Display panel, display device, and virtual reality/augmented reality device

A touch display device includes a touch panel on which a plurality of touch electrodes is disposed; and a touch circuit configured to output a touch driving signal of a pulse type to the touch panel and to sense occurrence of touch or a touch position according to a touch synchronization signal for defining a touch period, wherein the touch circuit is configured to receive the sensing data to sense occurrence of touch or a touch position and to determine whether the touch driver malfunctions, and to output a simplified initialization command to the touch driver when it is determined that the touch driver malfunctions, and the touch driver is initialized with a pre-stored set value maintained not changed upon receiving the simplified initialization command.

Touch circuit, touch driving circuit, touch display device, and method for driving touch circuit for reducing initialization speed and minimizing loss of touch sensing data during malfunction

A touch sensing system and a method of driving the same are disclosed. The touch sensing system includes a touch screen integrated display panel provided with a plurality of touch sensors and a plurality of pixels, a timing controller time-dividing one display frame into a plurality of touch periods and a plurality of display periods, a microcontroller unit dividing a sensing mode of the plurality of touch sensors into a full scan mode and a local scan mode, and a touch integrated circuit (IC) sensing a finger touch input of the touch sensors through the touch periods in the full scan mode and time-division sensing a finger touch input and a pen touch input of the touch sensors through the touch periods in the local scan mode.

Touch sensing system and method of driving the same

The present disclosure provides a touch display device and a touch driving circuit which support touch sensing of an active pen, and a method of driving the same. Sensing data acquired during a first sensing time period in a pen position sensing section may be transmitted as one data packet, and a plurality of pieces of sensing data acquired during a second sensing time period shorter than the first sensing time period in a pen data sensing section may be transmitted as one data packet, so that it is possible to reduce an unnecessary sensing time period when pen data is sensed, while preventing sensing data transmission sections from overlapping each other. In addition, information about a Most Significant Bit (MSB) of the sensing data to be transmitted when the sensing data is transmitted may be transmitted in the pen data sensing section, so that it is possible to easily restore the sensing data while minimizing a loss of the sensing data.

Touch display device, and touch driving circuit and method of driving same

A disclosed method for assigning a touch identification in a multi-touch sensitive display device is includes applying a touch driving signal to touch sensors of a touch screen and generating raw touch data, detecting touch points based on the raw touch data and respectively assigning temporary identifications (IDs) to the touch points, grouping the touch points based on a difference in distances between the touch points to form touch groups, and forming adaptive touch groups respectively based on the touch groups. The method also includes setting a comparison block including one or more of the adaptive touch groups contacting or overlapping each other, and matching the temporary ID assigned to one of the touch points within the comparison block in the current frame to one of a plurality of touch IDs within the comparison block in a previous frame.

Growing community of inventors

Goyang-si, South Korea

HyunWoo Jang