公开(公告)号：US20250130670A1

公开(公告)日：2025-04-24

申请号：US18781677

申请日：2024-07-23

Applicant: Samsung Display Co., LTD.

Inventor： Seung Rok LEE ,  Min Hong KIM ,  Hyeon Seo CHO

IPC: G06F3/041 ,  G06F3/044

Abstract: In a touch inspection device of a display device, the touch inspection device includes: a loading unit on which a display device is loaded; a touch driving circuit configured to drive touch driving electrodes and touch sensing electrodes on a touch sensing unit of the display device, and to detect touch data for touch nodes formed at intersection portions of the touch driving electrodes and the touch sensing electrodes; and an inspection processing circuit configured to calculate deviations of the touch data, to detect touch error data and at least one touch node in which the touch error data occurs by offsetting the deviations of touch data for each of the touch nodes adjacent to each other, and to detect a defect occurrence location for the at least one touch node in which the touch error data occurs.

公开(公告)号：US20250021197A1

公开(公告)日：2025-01-16

申请号：US18761512

申请日：2024-07-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Bo Geun YUK ,  Min Hong KIM ,  Mi Ae PARK ,  Ga Yeon YUN

IPC: G06F3/044

Abstract: A display device including: a display panel including a display area; and a touch array disposed on the display panel, wherein the display panel includes: a substrate; transistors disposed on the substrate; an insulating layer covering first electrodes and second electrodes of the transistors; light emitting elements disposed on the insulating layer, the light emitting elements being electrically connected to the first electrodes of the transistors; and a thin film encapsulation layer covering the light emitting elements, wherein the display area is divided into a plurality of sub-areas, and wherein the insulating layer has different thicknesses in the plurality of sub-areas.

公开(公告)号：US20230359303A1

公开(公告)日：2023-11-09

申请号：US18174523

申请日：2023-02-24

Applicant: Samsung Display Co., LTD.

Inventor： Jin Woo PARK ,  Min Hong KIM ,  Tae Joon KIM ,  Il Ho LEE ,  Wan Kee JUN

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3266

CPC classification number: G06F3/04166 ,  G06F3/0412 ,  G06F3/0446 ,  G09G3/3266 ,  G09G2310/0267

Abstract: A touch detection module, includes: a plurality of driving electrodes arranged side by side; a plurality of sensing electrodes staggered with respect to the driving electrodes; and a touch driving circuit configured to supply touch driving signals to the plurality of driving electrodes and to detect touch detection signals through the plurality of sensing electrodes to identify touch position coordinates, wherein the touch driving circuit is configured: to vary frequency modulation parameter set values in response to a change in a frequency of reference clocks, and to generate and supply a frequency of the touch driving signals by using the reference clocks and a varied frequency modulation parameter set value.

公开(公告)号：US20210117047A1

公开(公告)日：2021-04-22

申请号：US16931387

申请日：2020-07-16

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun Wook CHO ,  Ye Rin OH ,  Min Hong KIM ,  Tae Joon KIM ,  Hyun Jae LEE

IPC: G06F3/044

Abstract: A touch sensor for a display device includes: a base layer including first and second sensing regions adjacent to each other in a first direction and a non-sensing region surrounding at least one side of each of the first and second sensing regions; first sensors disposed in each of the first and second sensing regions, the first sensors being arranged along a second direction intersecting the first direction, the first sensors being electrically connected to each other along the second direction; second sensors disposed in each of the first and second sensing regions, the second sensors being arranged along the first direction, the second sensors being electrically connected to each other along the first direction; and at least one third sensor located in the first sensing region and the second sensing region, wherein the at least one third sensor includes first and second sub-sensors electrically separated at a boundary between the first sensing region and the second sensing region, and the first and second sub-sensors have substantially the same size.

公开(公告)号：US20230112523A1

公开(公告)日：2023-04-13

申请号：US17875335

申请日：2022-07-27

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Wook CHO ,  Min Hong KIM ,  Tae Joon KIM ,  Hyung Bae KIM ,  Jung Mok PARK ,  II Ho LEE ,  Jae Woo CHOI

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device includes a display unit including pixels. A sensor unit overlaps with the display unit and includes sensors. A sensor driver transmits a driving signal to the sensors, and receives sensing signals corresponding to the driving signal from the sensors. One sensing period includes a first sensing period and a second period. The sensor driver transmits a first driving signal having a first frequency to the sensors in the first sensing period, and transmits a second driving signal having a second frequency different from the first frequency to the sensors in the second sensing period.

公开(公告)号：US20230052993A1

公开(公告)日：2023-02-16

申请号：US17668966

申请日：2022-02-10

Applicant: Samsung Display Co., Ltd.

Inventor： Jung Mok PARK ,  Min Hong KIM ,  Tae Joon KIM ,  Jin Woo PARK ,  Wan Kee JUN ,  Hyun Wook CHO

IPC: G06F3/041 ,  G06F3/044

Abstract: The present disclosure relates to a touch detection device that can increase the emission efficiency while maintaining touch detecting performance by improving the structure of touch electrodes. According to an embodiment of the disclosure, a touch detection device comprising a first touch insulating layer, a connection electrode disposed on the first touch insulating layer, a second touch insulating layer disposed on the connection electrode, a driving electrode disposed on a second touch insulating layer and connected to the connection electrode through at least one touch contact hole, and a sensing electrode disposed on the second touch and spaced apart from the driving electrode, wherein at least one of the driving electrode and the sensing electrode a conductive metal electrode and a metal oxide electrode which is oxidized.

公开(公告)号：US20220171483A1

公开(公告)日：2022-06-02

申请号：US17466405

申请日：2021-09-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Bo Geun YUK ,  Jun Seong LEE ,  Min Hong KIM ,  Tae Joon KIM ,  Eung Kwan LEE

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device includes a display unit comprising a plurality of pixels. A touch sensing unit is disposed on the display unit and comprises a plurality of driving electrodes and a plurality of sensing electrodes. A touch driver supplies a touch driving signal to the driving electrodes through a plurality of driving lines and receives a touch sensing signal from the sensing electrodes through a plurality of sensing lines. During a first horizontal period of one frame period, the touch driver supplies a touch driving signal having a first pulse width to a first partial portion of the driving lines and supplies a touch driving signal having a second pulse width smaller than the first pulse width to a second partial portion of the driving lines that is different from the first partial portion of the driving lines.

公开(公告)号：US20250117100A1

公开(公告)日：2025-04-10

申请号：US18765098

申请日：2024-07-05

Applicant: Samsung Display Co., LTD.

Inventor： Bong Il KANG ,  Min Hong KIM ,  Jung Mok PARK ,  Ye Rin OH

IPC: G06F3/044

Abstract: In an inspecting method of a display device, the method includes: receiving an analog voltage from an external device; generating a first touch driving signal having a first potential based on the analog voltage; acquiring first raw data for each channel of touch electrodes by supplying the first touch driving signal to the touch electrodes; generating a second touch driving signal having a second potential higher than the first potential by using a charge pump; acquiring second raw data for each channel of the touch electrodes by supplying the second touch driving signal to the touch electrodes; calculating a ratio between the first raw data and the second raw data; and determining the charge pump is normal, based on the calculated ratio being within a designated range.

公开(公告)号：US20240220044A1

公开(公告)日：2024-07-04

申请号：US18211487

申请日：2023-06-19

Applicant: Samsung Display Co., Ltd.

Inventor： Min Hong KIM ,  Tae Joon KIM ,  Jung Mok PARK ,  Jin Woo PARK ,  Hyun Wook CHO

IPC: G06F3/041 ,  G09G3/20

CPC classification number: G06F3/0416 ,  G09G3/2096 ,  G09G2300/0842

Abstract: According to an embodiment of the disclosure, a display device includes a sensor driver receiving firmware from an host in which the firmware is stored, the sensor driver including a second memory storing the firmware supplied from the host and initialized when a reset signal is supplied from the host, and a sensing unit for supplying a recovery signal corresponding to an abnormal state of the sensor driver to the host while sensing at least one of an internal voltage and a clock signal of the sensor driver.

公开(公告)号：US20240134487A1

公开(公告)日：2024-04-25

申请号：US18402507

申请日：2024-01-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Bae KIM ,  Min Hong KIM ,  Sang Kook KIM ,  Tae Joon KIM ,  Jae Hyun PARK ,  Ji Yeong LEE ,  Hyun Wook CHO

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0443 ,  G06F3/04164 ,  G06F3/0446

Abstract: A touch sensor includes first touch cells disposed in a first touch sensing area, the first touch cells each including a first touch pattern and a first dummy pattern, and second touch cells disposed in a second touch sensing area, the second touch cells each including a second touch pattern and a second dummy pattern. An area of a first dummy pattern area in which the first dummy pattern is disposed is greater than an area of a second dummy pattern area in which the second dummy pattern is disposed.