公开(公告)号：US10319284B2

公开(公告)日：2019-06-11

申请号：US15630136

申请日：2017-06-22

Applicant: LG Display Co., Ltd.

Inventor： Byeongseong So ,  Youngsung Cho

IPC: G09G3/20 ,  G09G3/3266 ,  G09G3/36

Abstract: A display device includes: a pixel array including pixels at intersections of data lines and gate lines, a shift register including stages connected as a cascade, the shift register sequentially supplying gate pulses to the gate lines, and a node controller controlling nodes in the shift register, a first stage including: a pull-up transistor charging the output based on a Q node for a first gate pulse, a pull-down transistor discharging the output to a gate-low voltage based on a QB node voltage, a start controller pre-charging the Q node, and a QB node discharge controller discharging the QB node to a first low-potential voltage based on a first reset signal input line (IL), the node controller including a first reset signal generator that, during a vertical blanking interval of each frame, charges the first reset signal IL in response to a turn-on voltage applied to a gate-low voltage IL.

公开(公告)号：US11903280B2

公开(公告)日：2024-02-13

申请号：US17979418

申请日：2022-11-02

Applicant: LG DISPLAY CO., LTD.

Inventor： Youngsung Cho ,  Byeong-Seong So

IPC: H10K59/131 ,  G09G3/3225 ,  G09G3/3266 ,  G06F3/041 ,  G06F3/044

CPC classification number: H10K59/131 ,  G06F3/0412 ,  G09G3/3225 ,  G09G3/3266 ,  G06F3/044 ,  G06F2203/04112 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861

Abstract: A display device includes a display panel including a plurality of subpixels and a plurality of signal lines, the display panel defining a display area having a first optical area and a normal area outside of the first optical area, and a non-display area. The first optical area includes a plurality of light emitting areas and a plurality of first transmission areas, and the normal area includes a plurality of light emitting areas. The display panel includes a plurality of first horizontal lines, among the signal lines, disposed through the first optical area. The first horizontal lines include a bypass line connected to subpixels at both boundaries of the first optical area and not connected to other subpixels inside of the first optical area, and a non-bypass line connected to the subpixels at both boundaries of the first optical area and the subpixels inside of the first optical area.

公开(公告)号：US20240260384A1

公开(公告)日：2024-08-01

申请号：US18449474

申请日：2023-08-14

Applicant: LG Display Co., Ltd.

Inventor： Sungwoo Jun ,  Hyunguk Jang ,  Youngsung Cho

IPC: H10K59/65 ,  H10K59/80

CPC classification number: H10K59/65 ,  H10K59/80518 ,  H10K59/80521

Abstract: A display device and a display panel are disclosed which comprise a first optical area included in a display area, the optical area for display an image displaying and being light transmittable. A normal area included in the display area is positioned around the first optical area, wherein each of the first optical area and the normal area includes a plurality of emission areas, wherein a light emitting element including an anode electrode, a light emitting layer, and a cathode electrode is disposed in each of the plurality of emission areas in the first optical area. An outer shape of the anode electrode disposed in the first optical area has a plurality of protrusions and a plurality of depressions that are alternately arranged, thereby reducing a flare due to lack of any angled portion in the anode electrode.

公开(公告)号：US20240206231A1

公开(公告)日：2024-06-20

申请号：US18528466

申请日：2023-12-04

Applicant: LG Display Co., Ltd.

Inventor： Youngsung Cho ,  Byeong-Seong So

IPC: H10K59/121 ,  H10K59/131

CPC classification number: H10K59/1213 ,  H10K59/131

Abstract: A display device and a display panel are disclosed that include an efficient arrangement of pixel circuits of a first optical bezel area due to the display panel requiring a high resolution or low power consumption. The first optical bezel area is positioned between a first optical area and the normal area. A plurality of first subpixel circuit units and a plurality of second subpixel circuit units are disposed in the first optical bezel area, and a plurality of third subpixel circuit units are disposed in the normal area. At least one of a length in a first direction and a length in a second direction of the first and second subpixel circuit units is different from the length in the first direction and the length in the second direction of the third subpixel circuit unit.

公开(公告)号：US10019929B2

公开(公告)日：2018-07-10

申请号：US14983736

申请日：2015-12-30

Applicant: LG Display Co., Ltd.

Inventor： Dahye Shim ,  Joungmi Choi ,  Youngsung Cho ,  Jiah Kim

IPC: G06F3/038 ,  G09G5/00 ,  G09G3/20 ,  G09G3/36 ,  G06F1/26

CPC classification number: G09G3/2092 ,  G06F1/263 ,  G09G3/3677 ,  G09G2300/0426 ,  G09G2300/08 ,  G09G2310/0267 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2330/026 ,  G09G2330/027 ,  G09G2330/028

Abstract: A display device having a plurality of gate lines and a gate drive circuit is disclosed. The gate drive circuit includes a pull-up transistor configured to receive a first clock signal and to charge an output node to a voltage of the first clock signal based on a voltage of a Q node. The output node is connected to a corresponding one of the gate lines. The gate drive circuit also includes a switching circuit configured to charge the Q node based on a second clock signal. The switching circuit has an inverter circuit configured to control the voltage of the Q node based on the second clock signal.

公开(公告)号：US11195472B2

公开(公告)日：2021-12-07

申请号：US17091810

申请日：2020-11-06

Applicant: LG Display Co., Ltd.

Inventor： Youngsung Cho ,  Byeongseong So ,  Hyunguk Jang

IPC: G09G3/3233 ,  G09G3/3266

Abstract: A display device includes a display panel, a data driving circuit, a gate driving circuit, and a timing controller, each pixel of the display panel includes a light-emitting diode, a driving transistor, second to sixth switching transistors, and a storage capacitor, and at a sensing step at which the light-emitting diode does not emit light, a conduction path that is connected through the sixth switching transistor, the driving transistor, the second switching transistor, and the third switching transistor is formed, and an electrical signal reflecting a threshold voltage of one of the second to fourth switching transistors is transferred to a data line through the conduction path.

公开(公告)号：US11100867B2

公开(公告)日：2021-08-24

申请号：US16710848

申请日：2019-12-11

Applicant: LG Display Co., Ltd.

Inventor： Youngsung Cho ,  Byeong-Seong So

IPC: G09G3/3266 ,  G09G3/3258 ,  G09G3/3291

Abstract: Disclosed is a light emitting display apparatus in which two of three scan signals used by a pixel driving circuit provided in one pixel are supplied through two scan lines provided in the pixel and the other remaining signal is supplied through a scan line provided in another pixel adjacent to the pixel.

公开(公告)号：US10324561B2

公开(公告)日：2019-06-18

申请号：US15295831

申请日：2016-10-17

Applicant: LG Display Co., Ltd.

Inventor： Youngsung Cho ,  Joungmi Choi

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

Abstract: A display device including a touch screen and a driving circuit of the display device are disclosed. A display panel of the display device is driven while being divided into a first block, to which data is applied during a first display period, and a second block, to which data is applied during a second display period following a touch sensing period. A display driving circuit includes an (N−1)th stage driving a last gate line of the first block and an Nth stage driving a first gate line of the second block. The Nth stage includes a charger charging a Q node of the Nth stage in the touch sensing period in response to a multi-start signal before the second display period starts.

公开(公告)号：US11804181B2

公开(公告)日：2023-10-31

申请号：US17952032

申请日：2022-09-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Youngsung Cho ,  Byeong-Seong So

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  H10K59/124

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  H10K59/124 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2354/00

Abstract: A display device includes: a display panel including a plurality of data lines, a plurality of gate lines, and a plurality of pixels connected to the plurality of data lines and the plurality of gate lines; a data driving circuit configured to supply data signals to the plurality of data lines; a gate driving circuit configured to supply gate signals to the plurality of gate lines; and a power supply circuit configured to supply a first body voltage and a second body voltage having a voltage level that is less than the first body voltage to the plurality of pixels, the plurality of pixels being selectively supplied with the first body voltage and the second body voltage.

公开(公告)号：US11175759B2

公开(公告)日：2021-11-16

申请号：US16714438

申请日：2019-12-13

Applicant: LG Display Co., Ltd.

Inventor： Byeong-Seong So ,  Youngsung Cho

IPC: G06F3/041 ,  H01Q1/24

Abstract: Disclosed is a display apparatus with an integrated antenna, in which an antenna and a touch screen are embedded, and the display apparatus comprises a display panel including a touch screen and an antenna electrode, wherein the display panel is divided into a display area and a non-display area surrounding the display area and includes a pixel array part including pixel driving circuits provided in the display area and an electrode array part provided on the pixel array part and including the touch screen and the antenna electrode, the display area includes a pixel including the pixel driving circuit, and a portion of the touch screen is open.