公开(公告)号：US20240221673A1

公开(公告)日：2024-07-04

申请号：US18543637

申请日：2023-12-18

Applicant: LG Display Co., Ltd.

Inventor： Insu Hwang ,  DongYoon Lee ,  Kimin Son

IPC: G09G3/3258 ,  H10K59/131

CPC classification number: G09G3/3258 ,  H10K59/131 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2330/021

Abstract: A display device is disclosed. The display device comprises: a driving transistor drives a light emitting element; a scanning transistor connected between a first node of the driving transistor and a data line; and a sensing transistor connected between a second node of the driving transistor and a reference voltage line, wherein a period of time during which a characteristic value of the sensing transistor is sensed includes a voltage control period, a voltage tracking period, and a sampling period, and during the voltage control period, a first sensing voltage is supplied to the data line, a second sensing voltage is supplied to a third node of the driving transistor, a third sensing voltage is supplied to gate nodes of the scanning transistor and the sensing transistor, and a fourth sensing voltage is supplied to the reference voltage line. Accordingly, changes of characteristic values of the sensing transistor are sensed.

公开(公告)号：US20200105195A1

公开(公告)日：2020-04-02

申请号：US16583011

申请日：2019-09-25

Applicant: LG Display Co., Ltd.

Inventor： Eunji Song ,  Kimin Son

IPC: G09G3/3241 ,  G09G3/3291

Abstract: A current sensing device and an organic light emitting display device including the same are disclosed. The current sensing device includes a sensing unit selectively connected to a pixel and a reference current source through a sensing line. The sensing unit includes a plurality of resistors connected to a first node and setting a divided voltage according to a pixel current input from the pixel and a reference current input from the reference current source, a first MOS transistor connected between the first node and a second node, a second MOS transistor diode-connected to the second node, and a comparator having an inverting input terminal connected to a third node, a non-inverting input terminal connected to a fourth node, comparing a reference voltage charged at the third node when the reference current is input and a pixel voltage charged at the fourth node when the pixel current is input, and outputting a comparison result.

公开(公告)号：US12249286B2

公开(公告)日：2025-03-11

申请号：US18543637

申请日：2023-12-18

Applicant: LG Display Co., Ltd.

Inventor： Insu Hwang ,  DongYoon Lee ,  Kimin Son

IPC: G09G3/3258 ,  H10K59/131

Abstract: A display device is disclosed. The display device comprises: a driving transistor drives a light emitting element; a scanning transistor connected between a first node of the driving transistor and a data line; and a sensing transistor connected between a second node of the driving transistor and a reference voltage line, wherein a period of time during which a characteristic value of the sensing transistor is sensed includes a voltage control period, a voltage tracking period, and a sampling period, and during the voltage control period, a first sensing voltage is supplied to the data line, a second sensing voltage is supplied to a third node of the driving transistor, a third sensing voltage is supplied to gate nodes of the scanning transistor and the sensing transistor, and a fourth sensing voltage is supplied to the reference voltage line. Accordingly, changes of characteristic values of the sensing transistor are sensed.

公开(公告)号：US10818241B2

公开(公告)日：2020-10-27

申请号：US16226432

申请日：2018-12-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyung-Rok Kim ,  Taegung Kim ,  Haejin Park ,  EunJi Park ,  Kimin Son

IPC: G09G3/3266 ,  G09G3/32 ,  G09G3/3275 ,  G06F3/044 ,  H01L27/32 ,  G06F3/041

Abstract: The display apparatus may include gate lines passing through a display area of a substrate, data lines passing through the display area of the substrate, pixel driving power lines passing through the display area of the substrate, a plurality of pixels having a pixel driving chip mounted on at least one pixel area defined on the substrate and connected and connected to an adjacent gate line and data line and a light emission part connected to the pixel driving chip, a gate driving chip array part mounted in a non-display area of the substrate and connected to the gate lines, and a data driving chip array part mounted in the non-display area of the substrate and connected to the data lines.

公开(公告)号：US10431172B2

公开(公告)日：2019-10-01

申请号：US15681977

申请日：2017-08-21

Applicant: LG Display Co., Ltd.

Inventor： Joondong Kim ,  Kimin Son

IPC: G09G3/36

Abstract: A display device and a method of driving the same are disclosed. The display device includes a display panel configured to display an image, a plurality of data lines arranged in a first diagonal direction of the display panel, a plurality of scan lines arranged in a second diagonal direction intersecting the first diagonal direction of the display panel, a plurality of data drivers connected to the plurality of data lines, and a plurality of scan drivers connected to the plurality of scan lines.

公开(公告)号：US11741906B2

公开(公告)日：2023-08-29

申请号：US17559340

申请日：2021-12-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Changhee Kim ,  Kimin Son

IPC: G09G3/3275

CPC classification number: G09G3/3275 ,  G09G2300/0439 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0626

Abstract: A data driving circuit and a display device are provided. A display device includes: a display panel including a plurality of subpixels, each of the plurality of subpixels including: a light-emitting device, and a driving transistor configured to drive the light-emitting device, and a data driving circuit configured to: supply a data voltage to the plurality of subpixels, and supply, in a display period, to at least one subpixel among the plurality of subpixels: the data voltage, obtained by adding a first voltage corresponding to a luminance of the light-emitting device, and a second voltage smaller than a change value of a threshold voltage of the driving transistor.

公开(公告)号：US10910455B2

公开(公告)日：2021-02-02

申请号：US16224666

申请日：2018-12-18

Applicant: LG Display Co., Ltd.

Inventor： Haejin Park ,  Kimin Son

IPC: H01L27/32

Abstract: Disclosed is a display apparatus. The display apparatus includes a substrate, a first wiring part on the substrate, a first insulation layer on the first wiring part, a microchip on the first insulation layer, a second wiring part on the microchip, and an organic light emitting device on the second wiring part. The microchip includes a first surface and a second surface opposite to each other, a first pad part on the first surface, and a second pad part on the second surface. The first pad part is connected to the first wiring part, and the second pad part is connected to the second wiring part.

公开(公告)号：US20190206333A1

公开(公告)日：2019-07-04

申请号：US16222969

申请日：2018-12-17

Applicant: LG Display Co., Ltd.

Inventor： Kyung-Rok Kim ,  Kimin Son

IPC: G09G3/3275 ,  H01L27/12 ,  H01L23/00 ,  G09G3/32

CPC classification number: G09G3/3275 ,  G09G3/32 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/06 ,  G09G2310/08 ,  H01L24/16 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/3246 ,  H01L27/3258 ,  H01L27/3276 ,  H01L2224/16225

Abstract: Disclosed is a light emitting display apparatus. The light emitting display apparatus includes a substrate including a display area including a plurality of pixel areas and a non-display area surrounding the display area, a plurality of gate lines passing through the display area of the substrate, a plurality of data lines passing through the display area of the substrate, a plurality of pixel driving power lines passing through the display area of the substrate, a plurality of pixels respectively provided in the plurality of pixel areas of the substrate and connected to an adjacent gate line, an adjacent data line, and an adjacent pixel driving power line, and a gate buffer provided in the display area of the substrate and connected to a corresponding gate line of the plurality of gate lines. Accordingly, the light emitting display apparatus may buffer the gate pulse to remove a deviation of a falling time regardless of a distance between the gate driving circuit and the gate line, thereby preventing the occurrence of a luminance deviation between the left portion and the right portion of the display panel.

公开(公告)号：US11074866B2

公开(公告)日：2021-07-27

申请号：US16222969

申请日：2018-12-17

Applicant: LG Display Co., Ltd.

Inventor： Kyung-Rok Kim ,  Kimin Son

IPC: G09G3/3275 ,  G09G3/32 ,  G09G3/3266 ,  H01L23/00 ,  H01L27/12 ,  H01L27/32 ,  G06F3/041

Abstract: The light emitting display apparatus includes a substrate including a display area including a plurality of pixel areas and a non-display area surrounding the display area, a plurality of gate lines passing through the display area of the substrate, a plurality of data lines passing through the display area of the substrate, a plurality of pixel driving power lines passing through the display area of the substrate, a plurality of pixels respectively provided in the plurality of pixel areas of the substrate and connected to an adjacent gate line, an adjacent data line, and an adjacent pixel driving power line, and a gate buffer provided in the display area of the substrate and connected to a corresponding gate line of the plurality of gate lines.

公开(公告)号：US10818234B2

公开(公告)日：2020-10-27

申请号：US16583011

申请日：2019-09-25

Applicant: LG Display Co., Ltd.

Inventor： Eunji Song ,  Kimin Son

IPC: G09G3/3241 ,  G09G3/3291

Abstract: A current sensing device and an organic light emitting display device including the same are disclosed. The current sensing device includes a sensing unit selectively connected to a pixel and a reference current source through a sensing line. The sensing unit includes a plurality of resistors connected to a first node and setting a divided voltage according to a pixel current input from the pixel and a reference current input from the reference current source, a first MOS transistor connected between the first node and a second node, a second MOS transistor diode-connected to the second node, and a comparator having an inverting input terminal connected to a third node, a non-inverting input terminal connected to a fourth node, comparing a reference voltage charged at the third node when the reference current is input and a pixel voltage charged at the fourth node when the pixel current is input, and outputting a comparison result.