公开(公告)号：US20240233618A9

公开(公告)日：2024-07-11

申请号：US18230668

申请日：2023-08-07

Applicant: Samsung Display Co., Ltd.

Inventor： EUNJIN CHOI ,  GEONHWI PARK ,  JANG-MI LEE ,  KIHYUN PYUN

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0247 ,  G09G2320/0673 ,  G09G2330/021

Abstract: A display device includes a display panel displaying an image based on output image data, a voltage curve controller generating a converted peak luminance, a converted full white luminance, a converted peak grayscale, and a converted full white grayscale from a reference peak luminance and a reference full white luminance based on a gain mode and a gain value, and generating converted voltage curves including a first converted voltage curve from a first reference voltage curve based on the converted peak grayscale and the converted full white grayscale, and a driving voltage controller generating a driving voltage from the converted voltage curves based on a load and a maximum grayscale value of input image data. A voltage of the first converted voltage curve with respect to a peak grayscale is equal to a voltage of the first reference voltage curve with respect to the converted peak grayscale.

公开(公告)号：US20240062727A1

公开(公告)日：2024-02-22

申请号：US18498033

申请日：2023-10-31

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  JANG-HOON KWAK

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/0271 ,  G09G2330/021

Abstract: A display device includes a display panel including a plurality of pixels, a current sensor connected to the display panel, a controller including a gray-data voltage storing block, a block load gain extracting block, a block load generating block, a final load generating block, a current control block and a data correction block, and a data driver providing data voltages to the plurality of pixels based on the output image data.

公开(公告)号：US20230326381A1

公开(公告)日：2023-10-12

申请号：US18114241

申请日：2023-02-25

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  SUNG-MO YANG

IPC: G09G3/00 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/3233 ,  H10K59/131

Abstract: A display device includes: a display panel including first and second wirings; a control circuit board spaced apart from the display panel and including a power management circuit which provides a driving voltage to the first and second wirings; a first cable coupled to the control circuit board and electrically connecting the power management circuit and the first wiring; a second cable coupled to the control circuit board and electrically connecting the power management circuit and the second wiring; an abnormal coupling detector connected between the first and second wirings and generating first and second protection signals based on a difference between a first voltage of the first wiring and a second voltage of the second wiring; and a voltage supply controller counting the first and second protection signals, and providing a shutdown signal to the power management circuit such that the power management circuit stops providing the driving voltage.

公开(公告)号：US20230290303A1

公开(公告)日：2023-09-14

申请号：US18111234

申请日：2023-02-17

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  HYUNJOO SEO

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2300/0828 ,  G09G2330/028 ,  G09G2320/0626

Abstract: A display device includes a display panel which is driven in a mode selected from among a plurality of modes including different luminance values, a voltage generator which generates a driving voltage, a resistor connected to an output terminal, from which the driving voltage is output, a current sensing unit connected in parallel to the resistor, where the current sensing unit measures a voltage value across both ends of the resistor and calculates a driving current value using a resistance value of the resistor and a measured voltage value, and a maximum current calculating unit which calculates a maximum measured current value corresponding a the luminance value of a selected mode and outputs a selection signal corresponding to the maximum measured current value, and the current sensing unit sets a maximum measured voltage value corresponding to the maximum measured current value in response to the selection signal.

公开(公告)号：US20220215798A1

公开(公告)日：2022-07-07

申请号：US17380243

申请日：2021-07-20

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  GEONHWI PARK ,  Jungeon An

IPC: G09G3/3208

Abstract: An organic light emitting diode (“OLED”) display device, which operates in a variable frame mode, includes a display panel including a plurality of pixels, a power management circuit which supplies a power supply voltage to the plurality of pixels, and a controller which determines a panel load, a first representative gray level and a second representative gray level by analyzing input image data, determines an initial level of the power supply voltage based on the panel load and the first representative gray level, and determines a step level of the power supply voltage based on the panel load and the second representative gray level. The power management circuit generates the power supply voltage having the initial level during an active period, and gradually increases a voltage level of the power supply voltage from the initial level based on the step level during a variable blank period.

公开(公告)号：US20210319740A1

公开(公告)日：2021-10-14

申请号：US17149610

申请日：2021-01-14

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  WONJIN SEO ,  EUNJIN CHOI

IPC: G09G3/20

Abstract: A driving controller set includes a net power control setter, a data clamper, a data line, and a data driver. The net power control setter may determine a first scale factor for adjusting a grayscale value of (N+1)-th frame data based on a load of N-th frame data and a net power control reference value. N is an integer equal to or greater than two. The data clamper may determine a second scale factor for adjusting a grayscale value of the N-th frame data based on a load of (N−1)-th frame data and the N-th frame data. A data signal may be generated using the first scale factor and/or the second scale factor. The data line may include a conductive material. The data driver may convert the data signal into a data voltage and may output the data voltage to the data line.

公开(公告)号：US20190325843A1

公开(公告)日：2019-10-24

申请号：US16354358

申请日：2019-03-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KIHYUN PYUN ,  Seung-woon SHIN ,  Eui-myeong CHO

IPC: G09G5/00 ,  H03L7/08 ,  H03F3/45 ,  H03H11/04

Abstract: A receiving circuit includes a first capacitor connected to a first signal line, a second capacitor connected to a second signal line. A first bias control circuit may convert a common mode voltage of a first received signal provided through the first capacitor to a first voltage level to output a first biased signal. A second bias control circuit may convert a common mode voltage of a second received signal provided through the second capacitor to a second voltage level to output a second biased signal. A balance compensation circuit may receive the first biased signal and the second biased signal, compensate for an offset voltage of the first biased signal based on the second biased signal, and compensate for an offset voltage of the second biased signal based on the first biased signal to output a first differential signal and a second differential signal.

公开(公告)号：US20240242646A1

公开(公告)日：2024-07-18

申请号：US18539670

申请日：2023-12-14

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  Jungeon An

IPC: G09G3/00 ,  G09G3/20

CPC classification number: G09G3/006 ,  G09G3/2096 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2330/021 ,  G09G2330/028

Abstract: A display device includes a display panel including pixels, a gate driver configured to output a first gate signal for writing data voltages to the pixels and a second gate signal for applying an initialization voltage to the pixels, which have activation levels, to the pixels in a misconnection detection period, a data driver configured to output the data voltages to the pixels in the misconnection detection period, a power voltage generator electrically connected to the data driver through a cable and configured to output a first power voltage to the display panel in the misconnection detection period, and a timing controller electrically connected to the data driver through the cable and configured to perform a protection operation by detecting misconnection of the cable based on the first power voltage in the misconnection detection period.

公开(公告)号：US20240221647A1

公开(公告)日：2024-07-04

申请号：US18383048

申请日：2023-10-24

Applicant: Samsung Display Co., Ltd.

Inventor： Jungeon An ,  KIHYUN PYUN

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0233 ,  G09G2320/043

Abstract: A display device includes a display panel including pixels, and a panel driver configured to sequentially apply data voltages to the pixels on a row basis in an active period of a frame period, and to perform a sensing operation on at least one pixel of the pixels in a blank period of the frame period. Within the blank period, the panel driver applies a pre-charge data voltage to the at least one pixel after the sensing operation, and applies a previous data voltage to the at least one pixel after a predetermined time from a time point at which the pre-charge data voltage is applied.

公开(公告)号：US20230317018A1

公开(公告)日：2023-10-05

申请号：US17956942

申请日：2022-09-30

Applicant: Samsung Display Co., Ltd.

Inventor： KIHYUN PYUN ,  JANG-HOON KWAK

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2320/0271 ,  G09G2300/0842 ,  G09G2330/021 ,  G09G2320/0233

Abstract: A display device includes a display panel including a plurality of pixels, a current sensor connected to the display panel, a controller including a gray-data voltage storing block, a block load gain extracting block, a block load generating block, a final load generating block, a current control block and a data correction block, and a data driver providing data voltages to the plurality of pixels based on the output image data.