公开(公告)号：US20220334604A1

公开(公告)日：2022-10-20

申请号：US17721541

申请日：2022-04-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jungmoon KIM ,  Jeongpyo KIM ,  Insuk KIM ,  Yeonjeong LEE

IPC: G05F1/575

Abstract: An integrated circuit includes: a power supply circuit configured to generate a supply voltage from at least one of first and second power source voltages; and a system load configured to operate by receiving the supply voltage through an output node of the power supply circuit, wherein the power supply circuit includes: a first low drop-output (LDO) regulator configured to generate, from the first power source voltage, a first load current flowing to the system load through the output node; and a second LDO regulator configured to selectively generate a second load current flowing to the system load through the output node, from the second power source voltage based on a difference between voltages of internal nodes of the first LDO regulator.

公开(公告)号：US20210375209A1

公开(公告)日：2021-12-02

申请号：US17118728

申请日：2020-12-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byunghun HAN ,  Insuk KIM ,  Jungmoon KIM ,  Sungjin PARK ,  Seunggun HAM

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: An OLED display system includes a display panel, a driving circuit, a voltage generator and a power management application circuit (PMAC). The driving circuit provides scan signals to the display panel. The voltage generator generates a negative voltage based on a first driving voltage having a positive level and a second driving voltage having a negative level and provides the negative voltage to the driving circuit. The PMAC includes a power management application circuit (PMIC) and an additional circuit distinct from the PMIC and disposed externally to the PMIC. The PMIC applies a high power supply voltage and a low power supply voltage to the display panel and generates the first driving voltage based on a battery voltage. The additional circuit generates the second driving voltage based on the battery voltage. The driving circuit generates at least one of the scan signals based on the negative voltage.

公开(公告)号：US20240345611A1

公开(公告)日：2024-10-17

申请号：US18756699

申请日：2024-06-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jungmoon KIM ,  Jeongpyo KIM ,  Insuk KIM ,  Yeonjeong LEE

IPC: G05F1/575 ,  G09G3/20

CPC classification number: G05F1/575 ,  G09G3/20 ,  G09G2330/021

Abstract: An integrated circuit includes: a power supply circuit configured to generate a supply voltage from at least one of first and second power source voltages; and a system load configured to operate by receiving the supply voltage through an output node of the power supply circuit, wherein the power supply circuit includes: a first low drop-output (LDO) regulator configured to generate, from the first power source voltage, a first load current flowing to the system load through the output node; and a second LDO regulator configured to selectively generate a second load current flowing to the system load through the output node, from the second power source voltage based on a difference between voltages of internal nodes of the first LDO regulator.

公开(公告)号：US20240046881A1

公开(公告)日：2024-02-08

申请号：US18382319

申请日：2023-10-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Byunghun HAN ,  Insuk KIM ,  Jungmoon KIM ,  Sungjin PARK ,  Seunggun HAM

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2330/021 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2310/0243 ,  G09G2300/0426 ,  G09G2330/028

Abstract: An OLED display system includes a display panel, a driving circuit, a voltage generator and a power management application circuit (PMAC). The driving circuit provides scan signals to the display panel. The voltage generator generates a negative voltage based on a first driving voltage having a positive level and a second driving voltage having a negative level and provides the negative voltage to the driving circuit. The PMAC includes a power management application circuit (PMIC) and an additional circuit distinct from the PMIC and disposed externally to the PMIC. The PMIC applies a high power supply voltage and a low power supply voltage to the display panel and generates the first driving voltage based on a battery voltage. The additional circuit generates the second driving Voltage based on the battery voltage. The driving circuit generates at least one of the scan signals based on the negative voltage.