公开(公告)号：US11869431B2

公开(公告)日：2024-01-09

申请号：US17849334

申请日：2022-06-24

Applicant: Samsung Display Co., LTD.

Inventor： Dong Kwan Han

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/027 ,  G09G2330/12

Abstract: A power provider includes: a first power converter to convert an input voltage, and output a first power voltage to a display panel through a first power line; a second power converter to convert the input voltage, and output a second power voltage to the display panel through a second power line; and a short circuit detecting circuit to detect a short-circuit of the first power line and the second power line in the display panel, by determining whether or not a level of a sensed voltage measured at the second power line is greater than or equal to a reference short circuit voltage level during a short circuit detecting period. The short circuit detecting circuit is to vary a length of the short circuit detecting period and the reference short circuit voltage level in response to a driving frequency.

公开(公告)号：US20230238885A1

公开(公告)日：2023-07-27

申请号：US18194106

申请日：2023-03-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong Kwan Han

IPC: H02M3/158 ,  H02M1/08 ,  G09G3/3266

CPC classification number: H02M3/158 ,  H02M1/08 ,  G09G3/3266 ,  G09G2320/0653 ,  H02M1/0009

Abstract: A voltage converter includes an input voltage line; an inductor coupled to the input voltage line; transistors coupled to the inductor; an output voltage line coupled to at least one of the transistors; a current sensor coupled to at least one of the input voltage line, the inductor, or the output voltage line; and a comparator coupled between the current sensor and the transistors. A DC-DC converter may include a voltage converter having an inductor and a plurality of transistors and configured to convert an input voltage into a power voltage and output the power voltage to an output terminal, an input current sensor configured to sense the input current of the converter, and a controller configured to change the slew rate of an inductor voltage in response to the input current of the converter and a preset reference current.

公开(公告)号：US12261927B2

公开(公告)日：2025-03-25

申请号：US18221395

申请日：2023-07-13

Applicant: Samsung Display Co., Ltd.

Inventor： Dong Kwan Han

IPC: H04L7/00

Abstract: The master device includes a first pad connected to a slave device through a first wire; a second pad connected to the slave device through a second wire; and a communication interface to transmit a communication control signal to the slave device through the first pad, and, through the second pad, to transmit a first data signal synchronized with the communication control signal to the slave device and to receive a second data signal synchronized with the communication control signal from the slave device. The first data signal is transmitted to the slave device by the master device in a write mode and the second data signal is transmitted to the master device by the slave device in a read mode. The communication interface is configured to start the read mode by transiting the communication control signal from a first voltage level to a second voltage level while the second pad has a predetermined voltage level.

公开(公告)号：US11637495B2

公开(公告)日：2023-04-25

申请号：US17060288

申请日：2020-10-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong Kwan Han

IPC: H02M1/08 ,  H02M3/158 ,  G09G3/3266 ,  H02M1/00

Abstract: A voltage converter includes an input voltage line; an inductor coupled to the input voltage line; transistors coupled to the inductor; an output voltage line coupled to at least one of the transistors; a current sensor coupled to at least one of the input voltage line, the inductor, or the output voltage line; and a comparator coupled between the current sensor and the transistors. A DC-DC converter may include a voltage converter having an inductor and a plurality of transistors and configured to convert an input voltage into a power voltage and output the power voltage to an output terminal, an input current sensor configured to sense the input current of the converter, and a controller configured to change the slew rate of an inductor voltage in response to the input current of the converter and a preset reference current.

公开(公告)号：US12212238B2

公开(公告)日：2025-01-28

申请号：US18194106

申请日：2023-03-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Dong Kwan Han

IPC: H02M3/158 ,  G09G3/3266 ,  H02M1/08 ,  H02M3/156 ,  H02M1/00

Abstract: A voltage converter includes an input voltage line; an inductor coupled to the input voltage line; transistors coupled to the inductor; an output voltage line coupled to at least one of the transistors; a current sensor coupled to at least one of the input voltage line, the inductor, or the output voltage line; and a comparator coupled between the current sensor and the transistors. A DC-DC converter may include a voltage converter having an inductor and a plurality of transistors and configured to convert an input voltage into a power voltage and output the power voltage to an output terminal, an input current sensor configured to sense the input current of the converter, and a controller configured to change the slew rate of an inductor voltage in response to the input current of the converter and a preset reference current.

公开(公告)号：US11270653B2

公开(公告)日：2022-03-08

申请号：US17161489

申请日：2021-01-28

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun Chang Kim ,  Sung Chun Park ,  Dong Kwan Han

IPC: G06F1/00 ,  G09G3/3275

Abstract: A display device includes the following elements: a display panel comprising pixels; a data driver supplying data signals to the plurality of pixels; a driving voltage supply supplying a first driving voltage to the data driver; a power supply supplying a first input driving voltage to the driving voltage supply; and a timing controller providing control signals to the data driver, the driving voltage supply, and the power supply and providing luminance information and per-second frame rate information of the display panel to the driving voltage supply. The driving voltage supply comprises an input driving voltage adjuster which adjusts the first input driving voltage to a second input driving voltage based on the luminance information and the per-second frame rate information.