公开(公告)号：US20250148970A1

公开(公告)日：2025-05-08

申请号：US18909073

申请日：2024-10-08

Applicant: Samsung Display Co., Ltd.

Inventor： KWANGHUN KANG ,  YANGUK NAM

IPC: G09G3/3208 ,  H10K59/95

Abstract: A display device includes a power managing circuit which generates a display driving voltage, a display driving circuit which receives the display driving voltage, and a display panel to display an image. The power managing circuit includes a converting circuit which converts the input voltage into the display driving voltage, and outputs the display driving voltage through an output terminal, a load sensing circuit connected to the converting circuit to sense a load current of the output terminal and which outputs a sensing result signal, a resistance dividing circuit connected to a feedback terminal to receive a feedback voltage, and which controls a level of the feedback voltage in response to a feedback control signal, and a control circuit which controls an operation of the converting circuit by providing the feedback control signal to the resistance dividing circuit based on the sensing result signal.

公开(公告)号：US20250131864A1

公开(公告)日：2025-04-24

申请号：US18912983

申请日：2024-10-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KWANGHUN KANG

IPC: G09G3/20

Abstract: A display device includes a display panel which displays an image, a data driver which provides a data voltage to the display panel, and a power management circuit which provides an analog power voltage to the data driver through an output terminal. The power management circuit measures a load current output through the output terminal, and increases a voltage level of the analog power voltage based on the load current at a first increase time point within a blank period.

公开(公告)号：US20220189367A1

公开(公告)日：2022-06-16

申请号：US17502253

申请日：2021-10-15

Applicant: Samsung Display Co., Ltd.

Inventor： KWANGHUN KANG ,  SUNGCHUN PARK

IPC: G09G3/20 ,  H02M3/158

Abstract: A voltage converter includes a first switching element, a second switching element, and a forced maintaining circuit. The first switching element is configured to operate based on a switching control signal. The second switching element is connected to the first switching element. The second switching element is configured to operate based on the switching control signal in a synchronous mode and operate in a diode mode in an asynchronous mode. The forced maintaining circuit is connected to the second switching element and configured to maintain the asynchronous mode for a forced maintaining period after entering the asynchronous mode.