公开(公告)号：US20210099083A1

公开(公告)日：2021-04-01

申请号：US16871157

申请日：2020-05-11

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho KIM ,  Jung-taek KIM ,  Joon Suk BAIK ,  Sang Su HAN ,  Jae Woo RYU ,  Myung Ho LEE

IPC: H02M3/156 ,  H03F3/14

Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

公开(公告)号：US20220294342A1

公开(公告)日：2022-09-15

申请号：US17827862

申请日：2022-05-30

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho KIM ,  Jung-taek KIM ,  Joon Suk BAIK ,  Sang Su HAN ,  Jae Woo RYU ,  Myung Ho LEE

IPC: H02M3/156 ,  H03F3/14

Abstract: A power voltage generator includes a booster, a voltage sensor, a constant voltage controller and a constant current controller. The booster is configured to boost an input voltage to an output voltage based on an on-off operation of a switch. The voltage sensor is configured to generate a sensing voltage by sensing the output voltage. The constant voltage controller is configured to generate a first switching signal to control the switch by comparing the sensing voltage with a reference voltage. The constant current controller is configured to generate a gain based on a ratio of an electrode signal of the switch and a target signal by comparing the electrode signal of the switch with the target signal.

公开(公告)号：US20180122327A1

公开(公告)日：2018-05-03

申请号：US15796133

申请日：2017-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： Jung-taek KIM ,  Sangwoo CHOI

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3648 ,  G09G3/3674 ,  G09G3/3685 ,  G09G3/3688 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/0252 ,  G09G2320/0673 ,  G09G2330/02 ,  G09G2340/0435 ,  G09G2360/02 ,  G09G2370/08

Abstract: A display device includes a display panel including a gate driving circuit which drives gate lines, a data driving circuit which drives data lines based on an image data signal and a driving reference voltage, and a driving controller which controls the gate driving circuit in response to an image signal and a control signal and provides the image data signal and the driving reference voltage to the data driving circuit. The driving controller generates a data enable signal having a display section and a blank section in one frame based on the control signal, and when a difference between a time length of the blank section of a current frame and a time length of the blank section of a previous frame is greater than a reference value, changes the driving reference voltage to a voltage level corresponding to a current frame frequency.