公开(公告)号：US20210272493A1

公开(公告)日：2021-09-02

申请号：US17154943

申请日：2021-01-21

Applicant: Samsung Display Co., Ltd.

Inventor： YANGUK NAM

IPC: G09G3/20

Abstract: A display device includes a display panel, a display panel driving circuit, and a power management integrated circuit that generates driving voltages, receives driving set data from a timing controller, stores driving hex values corresponding to the driving set data in first internal registers, and determines voltage levels of the driving voltages based on the driving hex values. The power management integrated circuit divides the driving hex values into upper and lower decimal values, derives a result decimal value by applying the upper and lower decimal values to a first authentication-formula, generates a result hex value based on the result decimal value, compares an authentication hex value corresponding to authentication data received from the timing controller with the result hex value, and selectively operates in a normal mode or in a protection mode based on a comparison result between the authentication hex value and the result hex value.

公开(公告)号：US20240312394A1

公开(公告)日：2024-09-19

申请号：US18418816

申请日：2024-01-22

Applicant: Samsung Display Co., LTD.

Inventor： YANGUK NAM

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2330/028 ,  G09G2330/045

Abstract: A display device includes a display panel including a pixel, a driving voltage generator that provides a driving voltage to a data driver, the data driver that provides a data voltage to the pixel and provides a feedback voltage, which is generated by feeding back the driving voltage within the data driver, to the driving voltage generator, and a timing controller that controls the data driver.

公开(公告)号：US20240258922A1

公开(公告)日：2024-08-01

申请号：US18629361

申请日：2024-04-08

Applicant: Samsung Display Co., LTD.

Inventor： YANGUK NAM ,  SUNGCHUN PARK

IPC: H02M3/158 ,  G09G3/20

CPC classification number: H02M3/158 ,  G09G3/2096 ,  G09G2330/021 ,  G09G2330/028

Abstract: A power voltage generator includes: an input voltage providing part outputting input voltage based on a first signal; an inductor receiving the input voltage to generate an inductor current and connected to an outputting part; the outputting part generating an output voltage based on the inductor current and generating a feedback voltage; an output sensing part sensing the output voltage based on a second signal and generating an output sensing voltage; a peak voltage generator generating a peak voltage based on the input voltage, set data corresponding to an output set voltage, and ripple data corresponding to a ripple set voltage; a first comparing part generating a stop signal based on the output sensing and peak voltages; a second comparing part generating a start signal based on the set data and feedback voltage; and a switch controller generating the first and second signals based on the start and stop signals.

公开(公告)号：US20240379060A1

公开(公告)日：2024-11-14

申请号：US18587194

申请日：2024-02-26

Applicant: Samsung Display Co., LTD.

Inventor： YANGUK NAM

IPC: G09G3/3258 ,  G09G3/32 ,  H02M1/00 ,  H02M3/158

Abstract: A voltage generator includes a single inductive element that performs a direct current-to-direct current (DC-DC) conversion on an input voltage to generate a first output voltage, a second output voltage, and a third output voltage, a gate driver which controls the single inductive element, a mode determiner which receives the input voltage, a first feedback voltage generated based on the first output voltage, and a third feedback voltage generated based on the third output voltage and outputs a mode signal, a zero-current detector which is connected to the single inductive element and outputs a zero-current signal, and a controller which receive the mode signal and the zero-current signal and outputs a control signal to the gate driver.

公开(公告)号：US20240106330A1

公开(公告)日：2024-03-28

申请号：US18199067

申请日：2023-05-18

Applicant: Samsung Display Co., LTD.

Inventor： YANGUK NAM ,  SUNGCHUN PARK

IPC: H02M3/158 ,  G09G3/20

CPC classification number: H02M3/158 ,  G09G3/2096 ,  G09G2330/021 ,  G09G2330/028

Abstract: A power voltage generator includes: an input voltage providing part outputting input voltage based on a first signal; an inductor receiving the input voltage to generate an inductor current and connected to an outputting part; the outputting part generating an output voltage based on the inductor current and generating a feedback voltage; an output sensing part sensing the output voltage based on a second signal and generating an output sensing voltage; a peak voltage generator generating a peak voltage based on the input voltage, set data corresponding to an output set voltage, and ripple data corresponding to a ripple set voltage; a first comparing part generating a stop signal based on the output sensing and peak voltages; a second comparing part generating a start signal based on the set data and feedback voltage; and a switch controller generating the first and second signals based on the start and stop signals.

公开(公告)号：US20180059470A1

公开(公告)日：2018-03-01

申请号：US15677503

申请日：2017-08-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： YANGUK NAM ,  DAESIK LEE ,  JONGJAE LEE ,  SUJIN KIM ,  JUNKI HONG

IPC: G02F1/1333 ,  G09G3/36 ,  G02F1/1368

CPC classification number: G02F1/133382 ,  G02F1/1368 ,  G09G3/2092 ,  G09G3/3677 ,  G09G3/3688 ,  G09G3/3696 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/0285 ,  G09G2320/041 ,  G09G2330/02 ,  G09G2330/026

Abstract: A display device includes a display panel, a plurality of pixels arranged on the display panel, a data driver and a gate driver configured to apply a driving signal to the plurality of pixels, a timing controller configured to apply a control signal to the data driver and the gate driver, and store a plurality of driving voltage predetermined values for different temperatures, a temperature sensor configured to measure an ambient temperature, and a power management integrated circuit configured to adjust a driving voltage. The power management integrated circuit includes a controller configured to receive a driving voltage predetermined value among the plurality of driving voltage predetermined values from the timing controller using the measured ambient temperature, a plurality of storage banks configured to store the driving voltage predetermined value, and a power generator configured to output the driving voltage at the driving voltage predetermined value.

公开(公告)号：US20250148970A1

公开(公告)日：2025-05-08

申请号：US18909073

申请日：2024-10-08

Applicant: Samsung Display Co., Ltd.

Inventor： KWANGHUN KANG ,  YANGUK NAM

IPC: G09G3/3208 ,  H10K59/95

Abstract: A display device includes a power managing circuit which generates a display driving voltage, a display driving circuit which receives the display driving voltage, and a display panel to display an image. The power managing circuit includes a converting circuit which converts the input voltage into the display driving voltage, and outputs the display driving voltage through an output terminal, a load sensing circuit connected to the converting circuit to sense a load current of the output terminal and which outputs a sensing result signal, a resistance dividing circuit connected to a feedback terminal to receive a feedback voltage, and which controls a level of the feedback voltage in response to a feedback control signal, and a control circuit which controls an operation of the converting circuit by providing the feedback control signal to the resistance dividing circuit based on the sensing result signal.

公开(公告)号：US20220165196A1

公开(公告)日：2022-05-26

申请号：US17669862

申请日：2022-02-11

Applicant: Samsung Display Co., Ltd.

Inventor： YANGUK NAM

IPC: G09G3/20

Abstract: A display device includes a display panel, a display panel driving circuit, and a power management integrated circuit that generates driving voltages, receives driving set data from a timing controller, stores driving hex values corresponding to the driving set data in first internal registers, and determines voltage levels of the driving voltages based on the driving hex values. The power management integrated circuit divides the driving hex values into upper and lower decimal values, derives a result decimal value by applying the upper and lower decimal values to a first authentication-formula, generates a result hex value based on the result decimal value, compares an authentication hex value corresponding to authentication data received from the timing controller with the result hex value, and selectively operates in a normal mode or in a protection mode based on a comparison result between the authentication hex value and the result hex value.

公开(公告)号：US20210335281A1

公开(公告)日：2021-10-28

申请号：US17173528

申请日：2021-02-11

Applicant: Samsung Display Co., Ltd.

Inventor： YANGUK NAM ,  HYUNGRAE NAM

IPC: G09G3/3291

Abstract: A power voltage generator includes a charge pump and a regulator. The charge pump generates a charge pumping voltage. The charge pumping voltage has a headroom margin which is automatically set. The charge pumping voltage is varied based on a target voltage. The regulator generates a power voltage based on the charge pumping voltage.

公开(公告)号：US20190122611A1

公开(公告)日：2019-04-25

申请号：US16043739

申请日：2018-07-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： YANGUK NAM ,  Dae-sik Lee ,  Yoomi Kim ,  Junghwan Hwang

IPC: G09G3/3258 ,  G09G3/3233 ,  H01L27/32

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3696 ,  G09G2310/0264 ,  G09G2310/06 ,  G09G2310/08 ,  G09G2330/025 ,  G09G2330/028 ,  G09G2330/04 ,  G09G2330/045 ,  H01L27/3276

Abstract: A display device includes: a display panel including data lines, gate lines, and pixels, the display panel is operated in an active period or in a blank period; and a driving circuit for driving the display panel, the driving circuit including: a signal controller for outputting clock control signals; a voltage generator for receiving the clock control signals, wherein the voltage generator outputs active clock signals synchronized with the clock control signals during the active period and outputs blank clock signals during the blank period; and an overcurrent detection circuit for receiving the clock control signals and the blank clock signals, the overcurrent detection circuit detects an overcurrent of the blank clock signals, and a phase difference between the clock control signals in the active period is different from a phase difference between the clock control signals in the blank period.