公开(公告)号：US20240221653A1

公开(公告)日：2024-07-04

申请号：US18493063

申请日：2023-10-24

Applicant: LG Display Co., Ltd.

Inventor： Dong Ju KIM ,  Soon Dong CHO ,  Hoon JANG ,  Jun O HUR

IPC: G09G3/3233 ,  H02M3/158

CPC classification number: G09G3/3233 ,  H02M3/158 ,  G09G2300/0842 ,  G09G2320/0223 ,  G09G2330/021 ,  G09G2330/028

Abstract: A power supply according to an embodiment and a display device including the same are disclosed. The power supply according to the embodiment includes a reference voltage generation circuit configured to adjust a voltage level of a reference voltage and output the reference voltage when an input voltage is smaller than or equal to a selected threshold value. The power supply includes a power voltage generation circuit configured to adjust and provide an output power according to a fluctuation amount of the input voltage based on the adjusted reference voltage. The output power is varied either by changing the output voltage or by changing the output current.

公开(公告)号：US20210020137A1

公开(公告)日：2021-01-21

申请号：US16930951

申请日：2020-07-16

Applicant: LG Display Co., Ltd.

Inventor： Hoon JANG ,  Juno HUR ,  Dong Ju KIM ,  Soon Dong CHO

IPC: G09G3/36

Abstract: The present disclosure relates to a level shifter and a display device using the same, and the level shifter includes a first transistor configured to increase a voltage of an output signal, a second transistor configured to lower a voltage of the output signal, a first driver configured to vary a gate voltage of the first transistor in response to a first Vgs signal being varied within a transition time of the output signal, and a second driver configured to vary a gate voltage of the second transistor in response to a second Vgs signal being varied within a transition time of the output signal.

公开(公告)号：US20240249681A1

公开(公告)日：2024-07-25

申请号：US18382942

申请日：2023-10-23

Applicant: LG Display Co., Ltd.

Inventor： Dong Ju KIM ,  Won Yong JANG

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2096 ,  G09G2320/02 ,  G09G2330/08 ,  G09G2330/12

Abstract: A display device includes a display panel configured to display images, a plurality of circuit boards connected to one side of the display panel, a cable electrically connecting at least two of the plurality of circuit boards, voltage lines disposed on the cable, the plurality of circuit boards, and the display panel, a deviation compensation circuit configured to sense voltages transmitted through a circuit board on one side and a circuit board on the other side connected by the cable among the plurality of circuit boards and to output a signal based on the sensed voltages, and a variable circuit configured to compensate for a current difference between the circuit board on one side and the circuit board on the other side based on the signal output from the deviation compensation circuit.

公开(公告)号：US20240204781A1

公开(公告)日：2024-06-20

申请号：US18455718

申请日：2023-08-25

Applicant: LG DISPLAY CO., LTD.

Inventor： Hoon JANG ,  Jun O HUR ,  Dong Ju KIM

IPC: H03K19/0185 ,  G09G3/3233

CPC classification number: H03K19/01855 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2330/06 ,  G11C19/28

Abstract: A level shifter includes a first power input terminal to which a first gate voltage may be applied; a second power input terminal to which a second gate voltage may be applied; a third power input terminal to which a third gate voltage may be applied; an output terminal; a first switch element configured to electrically connect the first power input terminal to the output terminal in response to a voltage of on-intervals of a first control signal; a second switch element configured to electrically connect the second power input terminal to the output terminal in response to a voltage of on-intervals of a second control signal; and a third switch element configured to electrically connect the third power input terminal to the output terminal in response to a voltage of on-intervals of a third control signal.