公开(公告)号：US20240160312A1

公开(公告)日：2024-05-16

申请号：US18242353

申请日：2023-09-05

Applicant: LG Display Co., Ltd.

Inventor： Yangsik LEE ,  SangHyuck BAE

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04164 ,  G06F3/0446

Abstract: A touch display device can include a substrate having a display area and a non-display area located outside of the display area; at least one subpixel disposed in the display area including a display anode electrode, an emission layer and a display cathode electrode; and a display driving transistor disposed in the display area and being configured to drive the display anode electrode. Also, the touch display device can include a touch electrode disposed in the display area; a touch driving transistor disposed in the display area and configured to drive the touch electrode, the touch driving transistor including a first active layer, a first source electrode, a first drain electrode and a first gate electrode; and a control transistor configured to control turn-on and turn-off operations of the touch driving transistor, and including a second active layer, a second source electrode, a second drain electrode and a second gate electrode.

公开(公告)号：US20230172015A1

公开(公告)日：2023-06-01

申请号：US17957771

申请日：2022-09-30

Applicant: LG Display Co., Ltd.

Inventor： Yangsik LEE ,  HwiDeuk LEE

IPC: H01L27/32 ,  G06F3/041 ,  G06F3/044

CPC classification number: H01L27/3276 ,  G06F3/0412 ,  G06F3/0446 ,  G06F3/0418 ,  H01L27/323 ,  G06F2203/04107

Abstract: A touch display device can include a touch electrode implemented using a material and disposed on a transmissive area of a subpixel. The touch electrode can be disposed easily in a display panel which a transmittance is high. Furthermore, a short circuit prevention electrode can be disposed between a second electrode of a light-emitting element and the touch electrode to reduce a defect occurrence of the touch electrode in a process, and various types of touch sensing function can be provided or a performance of a touch sensing can be improved by using the short circuit prevention electrode as an electrode performing a certain function.

公开(公告)号：US20220206651A1

公开(公告)日：2022-06-30

申请号：US17494596

申请日：2021-10-05

Applicant: LG Display Co., Ltd.

Inventor： YongChan PARK ,  HwiDeuk LEE ,  Yangsik LEE ,  Hyunsuk CHO

IPC: G06F3/041

Abstract: Embodiments of the present disclosure are related to a touch display device, as a plurality of first line parts disposed on a first sensor layer and a plurality of second line parts disposed on a second sensor layer are alternated to make a touch line, at least a portion of different touch lines can be disposed to be overlapped each other, thus a plurality of touch lines can be disposed while reducing or minimizing a reduction of an aperture ratio or a transmittance of a subpixel due to an arrangement of the touch line. Accordingly, a touch sensitivity can be enhanced by further disposing touch electrodes, or the touch display device having a large area with many channels can be implemented easily by further disposing touch lines.

公开(公告)号：US20210151513A1

公开(公告)日：2021-05-20

申请号：US17060659

申请日：2020-10-01

Applicant: LG DISPLAY CO., LTD.

Inventor： Yangsik LEE ,  Jungho JO

IPC: H01L27/32 ,  G06F3/041 ,  G06F3/044

Abstract: A display device includes a substrate having an active area and a non-active area where the non-active area includes a first and second routing areas; a transistor over the active area; a device insulating layer over the transistor; a pixel electrode over the device insulating layer and electrically connected to a source or drain electrode of the transistor via a contact hole in the device insulating layer; an emitting layer over the pixel electrode; a common electrode over the emitting layer; an encapsulation layer over the common electrode in the active area and the first routing area, and having an inclined surface in the first routing area; one or more dams at a boundary between the first and second routing areas and having a height higher than those of surroundings; and a side edge touch electrode in at least one of the first and second routing areas.

公开(公告)号：US20200167037A1

公开(公告)日：2020-05-28

申请号：US16525488

申请日：2019-07-29

Applicant: LG Display Co., Ltd.

Inventor： HwiDeuk LEE ,  Yangsik LEE ,  Jaeseung KIM

IPC: G06F3/044 ,  G06F3/041 ,  H01L27/32 ,  H01L51/52

Abstract: Example embodiments of the present disclosure relate to a touch display device. In one example, a touch display device includes a substrate including an active area in which multiple subpixels are arranged and a nonactive area positioned outside the active area; wherein each of the multiple subpixels includes a first electrode, an organic light emitting layer and a second electrode on the organic light emitting layer; an encapsulation layer arranged on the second electrode; a plurality of touch electrodes and a plurality of touch routing wires arranged on the encapsulation layer; a touch sensing circuit configured to drive the plurality of touch electrodes through the plurality of touch routing wires; multiple connection patterns arranged on the encapsulation layer in the active area so as to electrically connect at least a portion of the plurality of touch electrodes to each other; multiple first compensation patterns arranged in the nonactive area and electrically connected to the plurality of touch routing wires; and multiple second compensation patterns arranged on the encapsulation layer corresponding to the multiple first compensation patterns.

公开(公告)号：US20200026383A1

公开(公告)日：2020-01-23

申请号：US16505057

申请日：2019-07-08

Applicant: LG DISPLAY CO., LTD.

Inventor： KwangJo HWANG ,  HwiDeuk LEE ,  Yangsik LEE

IPC: G06F3/041 ,  G06F3/044

Abstract: Discussed is a touch display device having a touch circuit that includes an operational amplifier having a first input terminal for inputting a reference voltage, a second input terminal connected to a sensing target touch electrode, and an output terminal for outputting an output voltage, and wherein a common voltage applied to a common electrode and a reference voltage inputted to the first input terminal of the operational amplifier are synchronized with each other.

公开(公告)号：US20200026376A1

公开(公告)日：2020-01-23

申请号：US16507622

申请日：2019-07-10

Applicant: LG Display Co., Ltd.

Inventor： Yangsik LEE ,  HwiDeuk LEE ,  Jaeseung KIM

IPC: G06F3/044 ,  G06F3/041

Abstract: A display device includes a display panel; a touch sensor sensing a capacitance of a plurality of nodes corresponding to a plurality of touch points on the display panel, wherein plurality of nodes includes a center node and a peripheral node surrounding the center node; a touch controller sensing a touch by detecting a capacitance change of the center node and the peripheral node, wherein the capacitance change of the center node is greater than the peripheral node; and a conductive layer disposed over the touch sensor that increases the capacitance change of the peripheral node.

公开(公告)号：US20190129548A1

公开(公告)日：2019-05-02

申请号：US16162324

申请日：2018-10-16

Applicant: LG Display Co., Ltd.

Inventor： KwangJo HWANG ,  SuChang AN ,  Yangsik LEE ,  DeukSu LEE

IPC: G06F3/041 ,  H01L51/52 ,  G06F3/044 ,  G06F3/047 ,  H01L27/32

Abstract: A touch display device and panel. In the display panel, an insulating film is provided on and in contact with an encapsulating layer, thereby reducing the entire thickness of the panel. The fabrication process of the touch display panel is simplified, thereby facilitating fabrication of the touch display device and panel.

公开(公告)号：US20180348913A1

公开(公告)日：2018-12-06

申请号：US15994828

申请日：2018-05-31

Applicant: LG Display Co., Ltd.

Inventor： Yangsik LEE ,  JaeGyun LEE ,  Hyangmyoung GWON ,  DeukSu LEE

IPC: G06F3/044

Abstract: Disclosed is to provide a touch display device and a method of manufacturing the same, in which a compensation pattern is formed in a portion where a stepped structure and touch lines intersect each other in the process of arranging the touch lines on a touch display panel, so that a residual film of the touch lines, which may be generated due to a step, can be removed. By removing the residual film of the touch lines, it is possible to prevent a phenomenon in which a short circuit of adjacent touch lines occurs during the process of arranging the touch lines. Through this, it is possible to provide a touch display panel capable of reducing a defective rate during the process of arranging the touch lines.

公开(公告)号：US20180348907A1

公开(公告)日：2018-12-06

申请号：US15851220

申请日：2017-12-21

Applicant: LG Display Co., Ltd.

Inventor： Yangsik LEE ,  Jae Gyun LEE ,  Deuk Su LEE

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F2203/04112 ,  G09G2310/0264 ,  H01L27/323

Abstract: A touch display device and a touch display panel. Touch lines and contact pads are disposed between touch electrodes, arranged in touch electrode lines in the touch display panel, and a driver circuit. A total of the area of each touch line and the area of the corresponding contact pad has a predetermined value. Differences in parasitic capacitance among the touch lines according to the positions of the touch electrodes are compensated for. It is possible to prevent the accuracy of sensing from being lowered by differences in parasitic capacitance among the touch electrodes disposed in different positions.