公开(公告)号：US10650777B2

公开(公告)日：2020-05-12

申请号：US16460803

申请日：2019-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Yong-sik Hwang ,  Sanghyun Park ,  Kyungmo Lee

IPC: G06F3/038 ,  G09G5/00 ,  G09G3/20 ,  G09G3/36

Abstract: A display device includes a power generator to supply a driving voltage to the display and a controller to control the display and the power generator and to generate a power control signal. The power generator includes a DC-DC converter and bypass cut-off logic. The DC-DC converter receives an input power voltage and the power control signal, selectively boosts the input power voltage based on the power control signal, and generates the driving voltage. The bypass cut-off logic selectively cuts off supply of the input power voltage to the DC-DC converter based on the power control signal.

公开(公告)号：US10224000B2

公开(公告)日：2019-03-05

申请号：US15201285

申请日：2016-07-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyejung Hong ,  Sanghyun Park ,  Kyungmo Lee ,  Yong-Sik Hwang

IPC: G09G5/00

Abstract: A voltage generator includes: a transforming unit to transform an input voltage into an output voltage in response to a switching signal; a feedback voltage controller to compare the output voltage with a reference voltage when a start signal is activated, and to output a feedback voltage corresponding to the comparison of the output voltage with the reference voltage; and a power controller to compare the feedback voltage with the reference voltage, and to output the switching signal corresponding to the comparison of the feedback voltage with the reference voltage.

公开(公告)号：US20190325841A1

公开(公告)日：2019-10-24

申请号：US16460803

申请日：2019-07-02

Applicant: Samsung Display Co., Ltd.

Inventor： Yong-sik Hwang ,  Sanghyun Park ,  Kyungmo Lee

IPC: G09G5/00 ,  G09G3/20

Abstract: A display device includes a power generator to supply a driving voltage to the display and a controller to control the display and the power generator and to generate a power control signal. The power generator includes a DC-DC converter and bypass cut-off logic. The DC-DC converter receives an input power voltage and the power control signal, selectively boosts the input power voltage based on the power control signal, and generates the driving voltage. The bypass cut-off logic selectively cuts off supply of the input power voltage to the DC-DC converter based on the power control signal.

公开(公告)号：US10373580B2

公开(公告)日：2019-08-06

申请号：US15490151

申请日：2017-04-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yong-sik Hwang ,  Sanghyun Park ,  Kyungmo Lee

IPC: G06F3/033 ,  G09G5/00 ,  G09G3/20 ,  G09G3/36

Abstract: A display device includes a power generator to supply a driving voltage to the display and a controller to control the display and the power generator and to generate a power control signal. The power generator includes a DC-DC converter and bypass cut-off logic. The DC-DC converter receives an input power voltage and the power control signal, selectively boosts the input power voltage based on the power control signal, and generates the driving voltage. The bypass cut-off logic selectively cuts off supply of the input power voltage to the DC-DC converter based on the power control signal.

公开(公告)号：US20170148413A1

公开(公告)日：2017-05-25

申请号：US15201285

申请日：2016-07-01

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyejung Hong ,  Sanghyun Park ,  Kyungmo Lee ,  Yong-Sik Hwang

IPC: G09G5/00

CPC classification number: G09G5/003 ,  G09G2300/0426 ,  G09G2310/0275 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/028

Abstract: A voltage generator includes: a transforming unit to transform an input voltage into an output voltage in response to a switching signal; a feedback voltage controller to compare the output voltage with a reference voltage when a start signal is activated, and to output a feedback voltage corresponding to the comparison of the output voltage with the reference voltage; and a power controller to compare the feedback voltage with the reference voltage, and to output the switching signal corresponding to the comparison of the feedback voltage with the reference voltage.