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    DC-DC CONVERTER AND DISPLAY DEVICE INCLUDING THE SAME
    11.
    发明申请
    DC-DC CONVERTER AND DISPLAY DEVICE INCLUDING THE SAME 审中-公开

    公开(公告)号：US20190172379A1

    公开(公告)日：2019-06-06

    申请号：US16132905

    申请日：2018-09-17

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Sung Chun PARK ,  Yoon Young LEE

    IPC: G09G3/20 ,  H02M3/158 ,  H02M1/32

    CPC classification number: G09G3/20 ,  G09G2330/021 ,  G09G2330/028 ,  H02M1/32 ,  H02M3/158 ,  H02M2001/0032

    Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving to mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.

    DC-DC CONVERTER AND DISPLAY DEVICE INCLUDING THE SAME
    13.
    发明申请
    DC-DC CONVERTER AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20230098574A1

    公开(公告)日：2023-03-30

    申请号：US18073999

    申请日：2022-12-02

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Sung Chun PARK ,  Yoon Young LEE

    IPC: G09G3/20 ,  H02M3/158 ,  H02M1/32

    Abstract: A direct current-to-direct current (“DC-DC”) converter includes: a first converter which outputs a first power voltage in a normal mode or a power saving mode based on a inductor current generated therein, where the first converter operates in a first driving manner in the normal mode, and operates in a second driving manner in the power saving mode; a second converter which outputs a second power voltage based on a inductor current generated therein, where the second converter operates in a third driving manner in the power saving mode, and a magnitude of the second power voltage in the power saving to mode is different from that in the normal mode; and a mode selector which supplies a mode control signal to the first and second converters, where the first and second converters are driven in the normal mode or the power saving mode based on the mode control signal.

    VOLTAGE CONVERTER AND DISPLAY DEVICE INCLUDING THE SAME
    14.
    发明申请
    VOLTAGE CONVERTER AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20230066237A1

    公开(公告)日：2023-03-02

    申请号：US17745129

    申请日：2022-05-16

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Yoon Young LEE

    IPC: H02M3/158 ,  H02M1/00 ,  G09G3/30

    Abstract: An embodiment of the present disclosure provides a voltage converter including: an inductor in which a first electrode thereof receives an input voltage and a second electrode thereof is connected to a first node; a first transistor in which a first electrode thereof is connected to the first node and a second electrode thereof is connected to a second node providing an output voltage; a second transistor in which a first electrode thereof is connected to the first node and a second electrode thereof is connected to a reference terminal; and a current sensor connected to the first node and the second node, wherein the current sensor includes: a third transistor in which a first electrode thereof is connected to the first node and a second electrode thereof is connected to a third node; and a current mirror circuit that mirrors currents flowing through the second node, the third node, and a sensing terminal.

    DC-DC CONVERTER, METHOD OF DC-DC CONVERTING USING THE SAME AND DISPLAY APPARATUS HAVING THE SAME
    15.
    发明申请
    DC-DC CONVERTER, METHOD OF DC-DC CONVERTING USING THE SAME AND DISPLAY APPARATUS HAVING THE SAME 有权

    公开(公告)号：US20210074205A1

    公开(公告)日：2021-03-11

    申请号：US17012755

    申请日：2020-09-04

    Applicant: Samsung Display Co., Ltd.

    Inventor： Yoon Young LEE ,  Sung Chun PARK ,  Chang Seok CHAE

    IPC: G09G3/3208 ,  H02M3/158 ,  H02M1/084

    Abstract: A DC-DC includes a sensor, a determiner, a reference voltage controller and an output voltage controller. The sensor is configured to sense an output voltage to generate a sensed signal. The determiner is electrically connected to the sensor and is configured to determine a difference between the sensed signal and a first protection level for generating a determiner output. The reference voltage controller is electrically connected to the determiner and is configured to generate a second reference voltage based on a first reference voltage and a value of the determiner output. The output voltage controller is electrically connected to the sensor and is configured to output the output voltage based on an input voltage, a feedback voltage of the output voltage, and the second reference voltage.

    DISPLAY DEVICE SUPPORTING A LOW POWER MODE AND METHOD OF OPERATING A DISPLAY DEVICE
    16.
    发明申请
    DISPLAY DEVICE SUPPORTING A LOW POWER MODE AND METHOD OF OPERATING A DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190228694A1

    公开(公告)日：2019-07-25

    申请号：US16257050

    申请日：2019-01-24

    Applicant: Samsung Display Co., Ltd.

    Inventor： Yoon Young LEE ,  Sungchun Park

    IPC: G09G3/20

    Abstract: A display device includes: a display panel; a power management circuit configured to: perform a short detection operation with a first short detection condition during a start-up operation; supply first and second power supply voltages in the normal mode; and stop supplying the first and second power supply voltages in the low power mode; and a display driver configured to provide a first image signal in the normal mode and a second image signal for in the low power mode, the display driver comprising a power block configured to supply first and second standby power supply voltages in the low power mode, wherein, in a transition frame between the low power mode and the normal mode, the display driver provides the second image signal for the standby image to the display panel, and the power management circuit performs the short detection operation with a second short detection condition.

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