公开(公告)号：US12008961B2

公开(公告)日：2024-06-11

申请号：US18119513

申请日：2023-03-09

Applicant: Samsung Display Co., Ltd.

Inventor： Moonsang Hwang

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0439 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0285 ,  G09G2360/14

Abstract: A display device includes: a display panel which includes a plurality of display areas having different pixel densities from each other, where each of the display areas includes a plurality of pixels; a gate driver, which provides a first gate signal and a second gate signal to each of the pixels; and a data driver, which provides data voltages to the pixels in an address-scan period and provides different bias voltages to the display areas, respectively, in a self-scan period following the address-scan period.

公开(公告)号：US11073895B2

公开(公告)日：2021-07-27

申请号：US16058970

申请日：2018-08-08

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Youngmin Park ,  Deog-kyoon Jeong ,  Kyungyoul Min ,  Jiheon Park ,  Jonghyun Oh ,  Moonsang Hwang ,  Young-Ha Hwang

IPC: G06F3/045 ,  G06F1/3234 ,  G06F3/041 ,  G06F3/044

Abstract: A display apparatus includes a display panel; a touch sensing unit (TSU) on the display panel and including first and second transmission touch lines (TTL); and a touch driving circuit (TDC). The TDC applies first and second touch driving signals (TDS) to the first and second TTL, respectively. The TDC includes first and second sharing switch devices (SSD) respectively connected to the first and second TTL. The first and second SSD are connected to each other. The first TDS has a first voltage level during a first period, and the second TDS has a second voltage level different than the first voltage level during the first period. The TDC is configured to turn on the first and second SSD during a second period after the first period such that the first and second TDSs have a voltage level between the first voltage level and the second voltage level.

公开(公告)号：US20240321156A1

公开(公告)日：2024-09-26

申请号：US18427738

申请日：2024-01-30

Applicant: Samsung Display Co., Ltd.

Inventor： Kwanghyun Baek ,  Jungkook Park ,  Donghak Pyo ,  Moonsang Hwang

IPC: G09G3/00 ,  G09G3/3233 ,  H10K59/131

CPC classification number: G09G3/006 ,  G09G3/3233 ,  H10K59/131 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2330/12

Abstract: A display panel includes a substrate including a display area, and a peripheral area surrounding the display area in plan view, a pixel circuit in the display area, a light-emitting diode in the display area, electrically connected to the pixel circuit, and including a pixel electrode, an opposite electrode, and an emission layer between the pixel electrode and the opposite electrode, a test circuit in the peripheral area, and a pseudo-diode in the peripheral area, electrically connected to the test circuit, and including a first transistor.

公开(公告)号：US11467649B2

公开(公告)日：2022-10-11

申请号：US17357914

申请日：2021-06-24

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Youngmin Park ,  Deog-kyoon Jeong ,  Kyungyoul Min ,  Jiheon Park ,  Jonghyun Oh ,  Moonsang Hwang ,  Young-Ha Hwang

IPC: G06F3/045 ,  G06F1/3234 ,  G06F3/041 ,  G06F3/044

Abstract: A display apparatus including a display panel, a touch sensing unit including first and second transmission touch lines, and a touch driving circuit to apply first and second touch driving signals to the first and second transmission touch lines, respectively, in which the touch driving circuit includes a first switch group including a first sharing switch device having one end connected to the first transmission touch line, and a second switch group including a second sharing switch device having two ends respectively connected to the second transmission touch line and another end of the first sharing switch device, and the touch driving circuit is configured to turn on the sharing switch devices during a first period such that the touch driving signals have a first voltage level, and turn on the sharing switch devices during a second period such that the touch driving signals have a second voltage level.

公开(公告)号：US12236893B2

公开(公告)日：2025-02-25

申请号：US18321099

申请日：2023-05-22

Applicant: Samsung Display Co., LTD.

Inventor： Moonsang Hwang ,  Kyoungju Shin

IPC: G09G3/3266 ,  G09G3/3233 ,  G09G3/20 ,  G09G3/36 ,  G11C19/00 ,  G11C19/28

Abstract: A display device includes a display panel including pixels, and a first gate driver including first stages that output first carry signals, respectively, and first buffers that output first gate signals, respectively, and providing the first gate signals to the pixels. In case that the display panel includes a first display area and a second display area, the pixels disposed in the first display area are driven at a first frequency, and the pixels disposed in the second display area are driven at a second frequency; a first gate signal among the first gate signals output from a first buffer corresponding to the first display area is provided to the pixels disposed in the first display area, a first buffer corresponding to the second display area does not output the first gate signal, and the first gate signal is not provided to the pixels disposed in the second display area.

公开(公告)号：US20230081418A1

公开(公告)日：2023-03-16

申请号：US17476387

申请日：2021-09-15

Applicant: Samsung Display Co., Ltd.

Inventor： Anup P. Jose ,  Amir Amirkhany ,  Moonsang Hwang

IPC: H04L1/00

Abstract: A system includes a first encoder configured to receive first input bits and generate a first stream of first bits based on the first input bits, a bit generator configured to receive second inputs bits and generate a second stream of second bits based on the second input bits, and a PAM4 transmitter configured to receive the first stream of first bits and the second stream of second bits, and generate PAM4 symbols based at least on the first stream of first bits.

公开(公告)号：US12020623B2

公开(公告)日：2024-06-25

申请号：US18156536

申请日：2023-01-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Moonsang Hwang ,  Donghak Pyo

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2007 ,  G09G3/3233 ,  G09G2320/0276 ,  G09G2320/0693 ,  G09G2330/12 ,  G09G2360/16

Abstract: The gamma correction method for a display device measures a first driving current according to a first grayscale voltage corresponding to the low grayscale value, determines a predicted luminance based on a driving current-luminance calibration function and the first driving current, compares the predicted luminance and a first target luminance for the low grayscale value, determines a first offset value based on the first driving current and the first target luminance when the predicted luminance is different from the first target luminance, and corrects the first grayscale voltage based on the first offset value. That is, the gamma correction method may measure the driving current to perform gamma correction for the low grayscale value, and shorten a process time of the gamma correction compared to performing the gamma correction for the low grayscale value by measuring luminance.

公开(公告)号：US20210318744A1

公开(公告)日：2021-10-14

申请号：US17357914

申请日：2021-06-24

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Youngmin Park ,  Deog-kyoon Jeong ,  Kyungyoul Min ,  Jiheon Park ,  Jonghyun Oh ,  Moonsang Hwang ,  Young-Ha Hwang

IPC: G06F1/3234 ,  G06F3/041 ,  G06F3/044

Abstract: A display apparatus including a display panel, a touch sensing unit including first and second transmission touch lines, and a touch driving circuit to apply first and second touch driving signals to the first and second transmission touch lines, respectively, in which the touch driving circuit includes a first switch group including a first sharing switch device having one end connected to the first transmission touch line, and a second switch group including a second sharing switch device having two ends respectively connected to the second transmission touch line and another end of the first sharing switch device, and the touch driving circuit is configured to turn on the sharing switch devices during a first period such that the touch driving signals have a first voltage level, and turn on the sharing switch devices during a second period such that the touch driving signals have a second voltage level.

公开(公告)号：US10593269B2

公开(公告)日：2020-03-17

申请号：US15879337

申请日：2018-01-24

Applicant: Samsung Display Co., Ltd. ,  Sogang University Research & Business Development Foundation

Inventor： Sang Kuk Kim ,  Moonsang Hwang ,  Weonjun Choe ,  Tai-Ji An ,  Seung-Hoon Lee ,  Won-Kang Kim ,  Jun-Sang Park

IPC: G09G3/36 ,  G09G3/3275

Abstract: A data driver includes a ramp signal generator generating a first ramp signal and a second ramp signal, a counter generating a count signal based on a clock signal, and channels each generating a data signal based on the first ramp signal, the second ramp signal, and the count signal. Each channel includes a latch circuit dividing the image data into a first partial data and a second partial data and latching the first and the second partial data, a duplication driver generating first and second reference signals by duplicating the first and second ramp signals, a digital-analog converter generating a driving signal corresponding to a first partial data based on the first and second reference signals, and an output circuit sampling the driving signal by comparing the second partial data with the count signal to output the data signal.