Lg Display Co., Ltd.

Hyundai Motor Company

Kia Motors Corporation

JuHan Kim

CheolSe Kim

Jinseong Kim

Haewon Lee

YongChan Park

Manhyeop Han

HoonBae Kim

SeungMok Shin

HyunHo Park

Young Bum Kum

SungChul Kim

Sae Hoon Kim

BuYeol Lee

Duck Whan Kim

Sungsu Han

Nam Woo Lee

Hyuck Roul Kwon

Soon Il Jeon

Yong Sun Park

Hyunyoo Kim

Seungkyeom Kim

SeungSeok Oh

Sanghyuck Bae

HoanSu Shim

Cheolse Kim

Soonil Jeon

Yeonock Ha

Youngbum Kum

Seungjun Yeon

Namwoo Lee

Saehoon Kim

Wonjoung Kim

The present disclosure provide a display device and a display panel, the display panel including: a transistor disposed over a substrate; a first planarization layer and a second planarization layer disposed over the transistor; an anode electrode disposed in a light emitting area on the second planarization layer and electrically connected to the transistor through an anode contact hole; a touch buffer layer disposed to cover the anode electrode; a touch electrode including an overlap area overlapping a portion of the anode electrode in a non-light emitting area on the touch buffer layer; a touch line disposed under the touch electrode and electrically connected to the touch electrode through a touch contact hole; a bank covering the touch electrode and including an opening in which the light emitting area is placed; and an emission layer and a cathode electrode sequentially disposed on the anode electrode.

Touch display device and display panel

A touch display device comprises a substrate; planarization film disposed over the substrate; an anode electrode and a touch metal disposed on the planarization film; a bank disposed over the planarization film on which the anode electrode and the touch metal are disposed, and the bank including a first cavity exposing the anode electrode and a second cavity exposing the touch metal; an organic light emitting layer disposed in the first cavity and disposed over the anode electrode; and a cathode electrode disposed over the organic light emitting layer and the bank, wherein the cathode electrode includes a first cathode electrode and a second cathode electrode, which are separated from each other, and a part of the first cathode electrode is disposed in the second cavity and connected to the touch metal in the second cavity.

Touch display device

The present disclosure relates to a touch display device, a touch panel, a touch sensing circuit and a touch sensing method. In the touch display device, the touch panel, and the touch sensing circuit, and in the method of performing touch sensing therein, a structure in which a plurality of touch sensor groups is arranged is provided, and one of a self-capacitance touch sensing scheme and a mutual-capacitance touch sensing scheme is adaptively implemented according to the type and position of a touch event. Therefore, the number of signal lines and the number of touch channels may be reduced, and the ghost phenomenon can be reduced or be overcome when multiple touches occur.

Touch display device, touch panel, touch sensing circuit, and touch sensing method

A touch display device includes a first horizontal electrode including a plurality of first electrode parts spaced apart from one another in a horizontal direction and a plurality of first bridge parts connecting the plurality of first electrode parts; a second horizontal electrode including a plurality of second electrode parts spaced apart from the first horizontal electrode in a vertical direction and spaced apart from one another in the horizontal direction and a plurality of second bridge parts connecting the plurality of second electrode parts; a third horizontal electrode including a plurality of third electrode parts spaced apart from the second horizontal electrode in the vertical direction and spaced apart from one another in the horizontal direction and a plurality of third bridge parts connecting the plurality of third electrode parts; a first horizontal touch line electrically connected to the first horizontal electrode and disposed to extend in the vertical direction; a second horizontal touch line electrically connected to the second horizontal electrode and disposed to extend in the vertical direction; and a third horizontal touch line electrically connected to the third horizontal electrode and disposed to extend in the vertical direction; a plurality of first separation electrodes; a plurality of second separation electrodes; a first vertical touch line; and a second vertical touch line.

Embodiments disclosed herein relate to a touch display panel and a touch display device. By arranging a shielding structure, which is connected to a touch electrode in a region where a touch line and a data line overlap each other or is applied with a shielding signal corresponding to a touch driving signal from an outside circuit, between the touch line and the data line, it is possible to prevent direct capacitance from being formed between the touch line and the data line, and to prevent the capacitance formed due to the data line from causing noise on a touch sensing signal. In addition, by arranging a touch load reduction layer between the shielding structure and the touch line, it is also possible to reduce the capacitance between the touch line and the data line arranged in the horizontal direction, thereby improving touch sensing performance.

Touch display panel and touch display device

In a touch display panel and a touch display device, a shielding pattern including the common electrode (COM) used as the touch electrode (TE) is disposed between a touch line (TL) and a data line (DL), and the touch line (TL) and the data line (DL) are arranged so as not to overlap each other in a boundary area between shielding patterns. The parasitic capacitance between the touch line (TL) and the data line (DL) can be reduced to improve the performance of touch sensing. In addition, the arrangement of the touch lines (TL) and data lines (DL) in the boundary area between shielding patterns is repeated at regular intervals to prevent an image abnormality.

Embodiments of the present disclosure relate to a touch display device and, more particularly, to a touch display device including a touch panel that can reduce the number of signal lines and the number of touch channels and can prevent or reduce a ghost phenomenon in multi-touching. In particular, the touch display device includes a woven type touch panel in which touch electrodes are formed by disposing electrodes to be entangled and electrically connecting the entangled electrodes such that electrically disconnected points exist, thereby being able to reduce the number of signal lines and the number of touch channels and prevent or reduce a ghost phenomenon in multi-touching.

A touch display device of the present disclosure may include a display panel on which a plurality of touch electrodes are electrically connected to a plurality of touch lines; a gate driving circuit for supplying scan signals to the display panel through a plurality of gate lines; a touch driving circuit for sensing a touch by detecting a touch signal from the plurality of touch electrodes and supplying a common voltage to the touch electrodes through the touch lines; a common voltage feedback line electrically connected to the plurality of touch lines or disposed to overlap with the plurality of gate lines in a non-display area of the display panel; and a common voltage compensation circuit for supplying a compensated common voltage based on a distortion in the common voltage.

Touch display device, touch driving circuit and display panel

A touch display device and a touch driving method thereof enable to effectively identify a ghost touch while reducing a number of touch lines and touch sensing units by differently disposing an arrangement of the touch electrodes to which the touch lines are connected for each touch block.

Touch display device and touch driving method hereof

Growing community of inventors

Gyeonggi-do, South Korea

JuHan Kim