公开(公告)号：US20170032753A1

公开(公告)日：2017-02-02

申请号：US15170783

申请日：2016-06-01

Applicant: Samsung Display Co., Ltd.

Inventor： Yun Mi Kim ,  Ki Hyun Pyun ,  Jang Hoon Kwak ,  Jong Young Yun ,  Eui Myeong Cho

IPC: G09G3/36 ,  G05F1/46 ,  G05F1/575

CPC classification number: G05F1/462 ,  G05F1/575 ,  G09G3/3696 ,  G09G2330/00

Abstract: A power supply of the present disclosure includes: a power generator that generates a first driving voltage to be supplied to a timing controller; and a voltage compensator that performs feedback of the first driving voltage and generates a feedback voltage according to a voltage difference between the first driving voltage and a first reference voltage supplied from the power generator. In this structure, the power generator generates a second driving voltage by boosting or dropping the first driving voltage to correspond to the feedback voltage, and may supply the second driving voltage to the timing controller.

Abstract translation: 本公开的电源包括：发电机，其产生要提供给定时控制器的第一驱动电压; 以及电压补偿器，其执行第一驱动电压的反馈，并根据第一驱动电压和从发电机提供的第一参考电压之间的电压差产生反馈电压。 在这种结构中，发电机通过升高或降低第一驱动电压来产生对应于反馈电压的第二驱动电压，并且可以将第二驱动电压提供给定时控制器。

公开(公告)号：US12039916B2

公开(公告)日：2024-07-16

申请号：US18061101

申请日：2022-12-02

Applicant: Samsung Display Co., LTD.

Inventor： Eui Myeong Cho ,  Ho Cheol Kang ,  Jae Hyun Koh ,  Seok Young Yoon

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0257 ,  G09G2320/0276 ,  G09G2320/045 ,  G09G2320/0673 ,  G09G2360/16

Abstract: A display device includes: pixels, each of the pixels including at least one light emitting element and a first transistor configured to supply a driving current to the at least one light emitting element; a sensing unit configured to sense a driving current of the first transistor, which corresponds to a data voltage applied to one pixel from among the pixels, the sensing unit being configured to detect a luminance of the light emitting element, which corresponds to the driving current; a gamma calculator configured to receive the driving current and the luminance of the light emitting element from the sensing unit, to calculate a gamma changed based on the driving current and the luminance of the light emitting element, and to provide, to a memory, the gamma changed based on the driving current and the luminance of the light emitting element.

公开(公告)号：US20220122524A1

公开(公告)日：2022-04-21

申请号：US17444165

申请日：2021-07-30

Applicant: Samsung Display Co., Ltd.

Inventor： Eui Myeong Cho ,  Ho Cheol Kang ,  Seok Young Yoon ,  Dae Gwang Jang

IPC: G09G3/32

Abstract: A display device includes a pixel. The pixel includes an emission unit and a pixel circuit. The pixel circuit to provide a first driving current to the emission unit in a first current flowing direction in a first mode, and to provide a second driving current to the emission unit in a second current flowing direction different from the first current flowing direction in a second mode. The emission unit includes a first electrode and a second electrode spaced from each other, a first light emitting element connected between the first electrode and the second electrode in the first current flowing direction, and a second light emitting element connected between the first electrode and the second electrode in the second current flowing direction.

公开(公告)号：US12223914B2

公开(公告)日：2025-02-11

申请号：US18206409

申请日：2023-06-06

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seong Oh Yeom ,  Yu Chol Kim ,  Ji Hye Kim ,  Jin Wook Yang ,  Eui Myeong Cho ,  Ja Kyoung Jin

IPC: G09G3/3266 ,  G09G3/3233

Abstract: A display device includes pixels including a light-emitting element, and an initialization transistor connected between an anode electrode of the light-emitting element and a first initialization power line to which a voltage of initialization power is supplied, and turned on when an initialization scan signal is supplied, and an initialization scan driver which supplies the initialization scan signal. The initial scan driver supplies an i-th (i is a natural number) initial scan signal to overlap an (i−1)-th initial scan signal, and supplies an (i+1)-th initial scan signal so as not to overlap the i-th initial scan signal, and the initialization scan signal is set to a gate-on voltage.

公开(公告)号：US10665200B2

公开(公告)日：2020-05-26

申请号：US16361168

申请日：2019-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Hyun Pyun ,  Eui Myeong Cho

IPC: G09G3/36 ,  G09G3/3258

Abstract: A display device includes: a driving voltage provider for generating a PWM signal according to the frequency of a clock signal, and providing a driving voltage generated according to the duty ratio of the PWM signal to at least one of the pixels, the data driver, and the scan driver. The driving voltage provider tunes the frequency of the clock signal to a first frequency in a first section, tunes the frequency of the clock signal to a second frequency smaller than the first frequency in a second section in which the magnitude of a driving voltage is larger than that in the first section, and tunes the frequency of the clock signal to a third frequency larger than the first frequency in a third section in which the magnitude of a driving voltage is smaller than that in the first section.

公开(公告)号：US12062333B2

公开(公告)日：2024-08-13

申请号：US18112424

申请日：2023-02-21

Applicant: Samsung Display Co., LTD.

Inventor： Eui Myeong Cho ,  Ho Cheol Kang ,  Jae Hyun Koh ,  Seok Young Yoon

IPC: G09G3/3233 ,  H01L27/146 ,  H01L33/24 ,  H01L33/44

CPC classification number: G09G3/3233 ,  H01L27/146 ,  H01L33/24 ,  H01L33/44 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233

Abstract: A pixel includes a first transistor connected between a first power line and a first node, and including a gate electrode connected to a second node, a second transistor connected between a data line and the second node, and including a gate electrode connected to a scan line, a third transistor connected between a first sensing line and the first node, and including a gate electrode connected to a first control line, a fourth transistor connected between a second sensing line and a third node, and including gate electrode connected to a second control line, a first sub light emitting unit including light emitting elements connected in parallel in a forward direction between the first node and the third node, and a second sub light emitting unit including light emitting elements connected in parallel in the forward direction between the third node and a second power line.

公开(公告)号：US20200043437A1

公开(公告)日：2020-02-06

申请号：US16361168

申请日：2019-03-21

Applicant: Samsung Display Co., Ltd

Inventor： Ki Hyun PYUN ,  Eui Myeong Cho

IPC: G09G3/36 ,  G09G3/3258

Abstract: A display device includes: a driving voltage provider for generating a PWM signal according to the frequency of a clock signal, and providing a driving voltage generated according to the duty ratio of the PWM signal to at least one of the pixels, the data driver, and the scan driver. The driving voltage provider tunes the frequency of the clock signal to a first frequency in a first section, tunes the frequency of the clock signal to a second frequency smaller than the first frequency in a second section in which the magnitude of a driving voltage is larger than that in the first section, and tunes the frequency of the clock signal to a third frequency larger than the first frequency in a third section in which the magnitude of a driving voltage is smaller than that in the first section.

公开(公告)号：US11961457B2

公开(公告)日：2024-04-16

申请号：US18094968

申请日：2023-01-09

Applicant: Samsung Display Co., LTD.

Inventor： Jae Hyun Koh ,  Sung Hoon Bang ,  Eui Myeong Cho ,  Ho Cheol Kang ,  Seok Young Yoon

IPC: G09G3/32 ,  G09G3/3233

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2320/0257

Abstract: A display device, includes: a display panel including a pixel electrically coupled to a gate line and a data line; a gate driver configured to provide a gate signal to the gate line; and a data driver configured to provide a data signal to the data line, wherein the gate driver is configured to sequentially provide a first gate signal and a second gate signal to the gate line during a first frame period, wherein the data driver is configured to provide a first data signal to the data line in response to the first gate signal, and to provide a second data signal to the data line in response to the second gate signal, and wherein the second data signal is different from the first data signal and varies dependent on the first data signal.

公开(公告)号：US11501698B2

公开(公告)日：2022-11-15

申请号：US17444165

申请日：2021-07-30

Applicant: Samsung Display Co., Ltd.

Inventor： Eui Myeong Cho ,  Ho Cheol Kang ,  Seok Young Yoon ,  Dae Gwang Jang

IPC: G09G3/32

Abstract: A display device includes a pixel. The pixel includes an emission unit and a pixel circuit. The pixel circuit to provide a first driving current to the emission unit in a first current flowing direction in a first mode, and to provide a second driving current to the emission unit in a second current flowing direction different from the first current flowing direction in a second mode. The emission unit includes a first electrode and a second electrode spaced from each other, a first light emitting element connected between the first electrode and the second electrode in the first current flowing direction, and a second light emitting element connected between the first electrode and the second electrode in the second current flowing direction.

公开(公告)号：US09865208B2

公开(公告)日：2018-01-09

申请号：US15189529

申请日：2016-06-22

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Eui Myeong Cho ,  Jang Hoon Kwak ,  Yun Mi Kim ,  Eun Kyung Kim ,  Hee Jeong Seo ,  Ki Hyun Pyun

IPC: G06F3/038 ,  G09G5/00 ,  G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3677 ,  G09G2310/0202 ,  G09G2310/0245 ,  G09G2310/04 ,  G09G2310/061 ,  G09G2340/0442

Abstract: A liquid crystal display device is provided as follows. A display panel having a first aspect ratio includes pixels, scan lines and data lines. The pixels are arranged at intersections of the scanning lines and the data lines. A display panel driver, in a partial mode in which an image having a second aspect ratio different from the first aspect ratio is displayed on a partial region of the display panel for two or more frame periods, supplies scan signals only to a first number of scan lines electrically connected to pixels of the partial region for a first type frame period of the two or more frame periods, and supplies scan signals to the plurality of scan lines for a second type frame period of the two or more frame periods.