公开(公告)号：US20190129565A1

公开(公告)日：2019-05-02

申请号：US16156853

申请日：2018-10-10

Applicant: LG Display Co., Ltd.

Inventor： KwangJo HWANG ,  Taeyun KIM ,  Sangkyu KIM ,  Ruda RHE ,  DeukSu LEE

IPC: G06F3/041 ,  G09G3/3208 ,  G06F3/044

Abstract: A power supply and a method of driving the same. A converter receives an input voltage from a battery and outputs a first voltage through an output terminal, such that a ground voltage of the output terminal changes. A pulse width modulation (PWM) controller controls the converter to adjust the voltage level of the first voltage. The ground voltage is applied to the converter as a direct current (DC) voltage during a first time and as a pulse wave having a predetermined amplitude during a second time. The PWM controller controls the first voltage to have different voltage levels during the first time and the second time.

公开(公告)号：US20190265835A1

公开(公告)日：2019-08-29

申请号：US16408010

申请日：2019-05-09

Applicant: LG DISPLAY CO., LTD.

Inventor： Seungrok SHIN ,  Deuksu LEE ,  Sangkyu KIM ,  Jaegyun LEE ,  Taeyun KIM

IPC: G06F3/041 ,  G09G3/3266 ,  G02F1/1362 ,  G06F3/044 ,  G02F1/1333 ,  G09G3/3275 ,  G09G3/36 ,  H01L27/32

Abstract: A display device can include an organic light emitting layer positioned between an anode electrode and a cathode electrode; an encapsulation layer disposed on the organic emission layer to protect the organic emission layer; a touch layer disposed on the sealing layer, the touch layer having a plurality of touch sensors configured to be driven according to a touch driving signal; a ground modulation signal generator configured to generate a ground modulation signal having a same amplitude as an amplitude of the touch driving signal; and a driving voltage supply configured to generate a modulated driving voltage based on the ground modulation signal, and apply the modulated driving voltage to a driving voltage supply line in synchronization with the touch driving signal within a same display frame.

公开(公告)号：US20180004345A1

公开(公告)日：2018-01-04

申请号：US15639439

申请日：2017-06-30

Applicant: LG DISPLAY CO., LTD.

Inventor： Seungrok SHIN ,  Deuksu LEE ,  Sangkyu KIM ,  Jaegyun LEE ,  Taeyun KIM

IPC: G06F3/041 ,  G09G3/36 ,  G09G3/3266 ,  G02F1/1333 ,  G06F3/044 ,  G02F1/1362 ,  H01L27/32 ,  G09G3/3275

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G02F1/136286 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2310/08 ,  G09G2354/00 ,  H01L27/323

Abstract: A display device can include a display panel touch block groups, each including touch sensors, each touch sensor corresponds to one or more pixels defined by data lines and gate lines; a data driver that generates and supplies a modulated source signal for display data to a data line; a gate driver that generates a modulated scan-on signal for writing the modulated source signal to a pixel and supplies the modulated scan-on signal to the gate lines; and a touch sensor driver that supplies a touch driving signal to touch wires connected to corresponding touch sensors in each of the touch block groups, and selectively senses for touch on a touch block group, except for a restricted touch block group overlapping a gate line that is supplied with the modulated scan-on signal, in which the modulated source signal or the modulated scan-on signal is synchronized with the touch driving signal.

公开(公告)号：US20200026408A1

公开(公告)日：2020-01-23

申请号：US16517163

申请日：2019-07-19

Applicant: LG DISPLAY CO., LTD.

Inventor： HwiDeuk LEE ,  Sangkyu KIM ,  Taeyun KIM ,  Yangsik LEE ,  Jaeseung KIM

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/038

Abstract: Discussed are a touch display panel, a touch display device, and a driving method thereof, wherein a constant voltage is applied to a cathode electrode during a period for sensing a finger touch or a pen touch, thereby performing touch sensing while performing display driving. In addition, a signal having the same phase and potential as the signal applied to the touch electrode is applied to the cathode electrode during a period for transmitting an uplink signal to the pen, thereby eliminating parasitic capacitance between the touch electrode and the cathode electrode, preventing transmission delay of the uplink signal, improving the recognition rate of the uplink signal, and enhancing the performance of pen-touch sensing.

公开(公告)号：US20180348931A1

公开(公告)日：2018-12-06

申请号：US15813098

申请日：2017-11-14

Applicant: LG Display Co., Ltd.

Inventor： Jaeseung KIM ,  JiHyun JUNG ,  DeukSu LEE ,  Sangkyu KIM ,  JaeGyun LEE ,  Taeyun KIM

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3225

Abstract: The present exemplary embodiments relate to a touch display device and a driving method thereof. A touch sensing time period is divided into a period when the touch is sensed by a self capacitive sensing manner and a period when the touch is sensed by a mutual capacitive sensing manner and a ground signal modulated to be the same as the touch driving signal is output to the display panel during the time period when the touch is sensed by the self capacitive sensing manner. By doing this, the parasitic capacitance in the display panel is reduced, sensitivity of touch sensing is improved, and various touch functions are provided.

公开(公告)号：US20180150184A1

公开(公告)日：2018-05-31

申请号：US15791796

申请日：2017-10-24

Applicant: LG Display Co., Ltd.

Inventor： Taeyun KIM ,  Deuksu LEE ,  Sangkyu KIM

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/36

Abstract: Disclosed is a display device having touch sensors and a driving method thereof, and the display device includes an integrated circuit (IC) having a data driver and a touch sensor driver. The display device prevents malfunction of the touch sensor driver by separating at least one of power for the data driver and the touch sensor driver.

公开(公告)号：US20160041666A1

公开(公告)日：2016-02-11

申请号：US14580637

申请日：2014-12-23

Applicant: LG Display Co., Ltd.

Inventor： Deuksu LEE ,  Jonghee HWANG ,  Seungrok SHIN ,  Taeyun KIM

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G02F1/136286 ,  G06F3/044 ,  G06F3/045 ,  G06F3/047

Abstract: A touch sensor integrated type display device includes gate and data lines, pixel electrodes, and touch electrodes arranged in a matrix with a row direction and a column direction. The touch electrodes include 1-1, 1-2, 2-1, and 2-2 touch electrodes respectively connected to 1-1, 1-2, 2-1, and 2-2 touch routing wires. The 1-1 touch routing wire connect 1-1 touch electrodes and is arranged in the row direction. The 2-1 touch routing wires are respectively connected to 2-1 touch electrodes and arranged in the column direction. The 1-2 touch routing wire connects 1-2 touch electrodes and is arranged parallel to the 1-1 touch routing wire. The 2-2 touch routing wire connects 2-2 touch electrodes and is arranged parallel to the 2-1 touch routing wire.

Abstract translation: 触摸传感器集成型显示装置包括以行方向和列方向排列成矩阵的栅极和数据线，像素电极和触摸电极。 触摸电极包括分别连接到1-1,1-2,2-1和2-2触摸布线的1-1,1-2,2-1和2-2个触摸电极。 1-1触摸路由线连接1-1个触摸电极，沿行方向排列。 2-1触摸路由电线分别连接到2-1触摸电极并沿列方向排列。 1-2触摸路由线连接1-2个触摸电极，并排布置为1-1触摸布线。 2-2触摸路由线连接2-2个触摸电极，并列配置为2-1触摸布线。

公开(公告)号：US20150331529A1

公开(公告)日：2015-11-19

申请号：US14569962

申请日：2014-12-15

Applicant: LG Display Co., Ltd.

Inventor： Deuksu LEE ,  Jihyun JUNG ,  Taeyun KIM

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

CPC classification number: G02F1/133512 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/3648

Abstract: A touch sensor-integrated display device is provided which does not suffer from a reduction in aperture ratio. The touch sensor-integrated display device includes first and second substrates, color filters that are defined by a black matrix in the active area of the second substrate and arranged in a first direction and a second direction crossing the first direction, touch electrodes that are arranged in the first and second directions so as to overlap the color filters, and a plurality of routing wires that are arranged on the black matrix and are respectively connected to the touch electrodes and extend to the bezel area.

Abstract translation: 提供了一种不会降低开口率的触摸传感器集成显示装置。 触摸传感器集成显示装置包括第一和第二基板，由第二基板的有源区域中的黑矩阵限定并沿与第一方向交叉的第一方向和第二方向布置的滤色器，所述触摸电极被布置 在第一和第二方向上与滤色器重叠，以及布置在黑矩阵上并分别连接到触摸电极并延伸到边框区域的多个布线。