公开(公告)号：US12125451B2

公开(公告)日：2024-10-22

申请号：US18143829

申请日：2023-05-05

Applicant: Samsung Display Co., LTD.

Inventor： Seokha Hong ,  Jong-Woong Park

IPC: G09G3/36 ,  G09G3/3291

CPC classification number: G09G3/3607 ,  G09G3/3291 ,  G09G2320/0666 ,  G09G2360/147

Abstract: A method of compensating for degradation of a display device includes: determining a reference region including a part of a first display region and a second display region having pixel structures from each other; determining first stress data of first pixels based on a first average luminance value of the first pixels disposed on the part of the first display region; determining second stress data of second pixels based on a second average luminance value of the second pixels disposed on a central region of the second display region; determining third stress data of third pixels based on a third average luminance value of the third pixels disposed on an outer region of the second display region; compensating for degradation of the second pixels based on the first and second stress data, and compensating for degradation of the third pixels based on the first and third stress data.

公开(公告)号：US11875736B2

公开(公告)日：2024-01-16

申请号：US17986115

申请日：2022-11-14

Applicant: Samsung Display Co., Ltd.

Inventor： Youngsoo Sohn ,  Jong-Woong Park ,  SeokJeong Song ,  Jiyeon Baik

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0238 ,  G09G2320/043 ,  G09G2320/066 ,  G09G2330/021

Abstract: A driving controller includes a compensator that calculates a compensation value based on first accumulated stress, and outputs an output image signal by compensating for the input image signal with the compensation value, a stress converter that converts the output image signal into current stress in response to an enable signal, an accumulation stress calculator that outputs second accumulated stress by adding the first accumulated stress and the current stress in response to the enable signal, a memory that stores the second accumulated stress and provides the first accumulated stress to the compensator and the accumulation stress calculator, and an operating time calculator that receives a current operating frequency and outputs the enable signal of an active level based on the current operating frequency.

公开(公告)号：US11568782B2

公开(公告)日：2023-01-31

申请号：US16997844

申请日：2020-08-19

Applicant: Samsung Display Co., Ltd.

Inventor： Jong-Woong Park

IPC: G09G3/20 ,  H04N5/225

Abstract: A method of driving a display panel that includes first and second display-regions includes: determining maximum luminance data among first data including first red data, first green data, and first blue data for the first display-region, calculating a threshold gray-level based on a luminance gain, a gray-level of the maximum luminance data, and a gamma value for the display panel, selecting a smaller value between the threshold gray-level and a maximum gray-level as a gain determination gray-level, calculating a compensation gain obtained by dividing the gain determination gray-level by the gray-level of the maximum luminance data, generating first compensated data by applying the compensation gain to the first data, displaying a first-image in the first display-region based on the first compensated data, and displaying a second-image in the second display-region based on second data including second red data, second green data, and second blue data for the second display-region.

公开(公告)号：US10559246B2

公开(公告)日：2020-02-11

申请号：US16508519

申请日：2019-07-11

Applicant: Samsung Display Co., Ltd.

Inventor： Jeongeun Kim ,  Jong-Woong Park

IPC: G09G3/20

Abstract: A display device includes a display panel including a plurality of pixels, the display panel having an active region in which an image is displayed and an inactive region adjacent to the active region, an image processor setting image data of the inactive region to dummy data, and performing a rendering operation for a boundary pixel of the plurality of pixels based on the dummy data to generate output image data, the boundary pixel located in the active region and adjacent to the inactive region, and a panel driver providing a driving signal to the display panel to display the image corresponding to the output image data.

公开(公告)号：US10459571B2

公开(公告)日：2019-10-29

申请号：US16274022

申请日：2019-02-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jong-Woong Park ,  Joo-Hyung Lee ,  Geun-Young Jeong ,  Sang-Jin Pak ,  Ji-Yeon Yang ,  Se-Il Cho

IPC: G06F3/041 ,  H04N13/31 ,  G06F3/044 ,  G09G5/00 ,  H04N13/00 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1368 ,  G06F3/047 ,  G09G3/00 ,  G09G3/36

Abstract: A 3-dimensional (3D) flat panel display with a built-in touch screen panel includes a first substrate, a plurality of pixels on the first substrate, a plurality of first electrode patterns spaced apart from one another at a first predetermined interval along a first direction, the plurality of first electrode patterns for driving the plurality of pixels, a second substrate positioned to face the first substrate, and a plurality of barrier patterns formed on an outer surface of the second substrate and spaced apart from one another at a second predetermined interval along a second direction, intersecting the first direction. At least one of the plurality of first electrode patterns and at least one barrier pattern of the plurality of barrier patterns serve as electrodes for the built-in touch screen panel.

公开(公告)号：US09947265B2

公开(公告)日：2018-04-17

申请号：US14692054

申请日：2015-04-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jong-Woong Park ,  Jae-Shin Kim

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2360/16

Abstract: A method for driving an electroluminescent display device includes grouping pixels in a display panel into a plurality of pixel groups, each pixel group including a plurality of rows and a plurality of columns. Accumulated block stress values are provided based on input image data. Each accumulated block stress value represents a degree of degeneration of the pixels in each pixel block. Corrected stress values are provided by correcting each accumulated block stress value based on the accumulated block stress values of the adjacent pixel blocks. Input image data is corrected based on the corrected stress values.

公开(公告)号：US12051377B2

公开(公告)日：2024-07-30

申请号：US18354241

申请日：2023-07-18

Applicant: Samsung Display Co., LTD.

Inventor： Jong-Woong Park ,  Wonju Shin ,  Byung Ki Chun ,  Kanghee Lee

IPC: G09G3/3291 ,  G09G3/20

CPC classification number: G09G3/3291 ,  G09G3/2007 ,  G09G3/2096 ,  G09G2320/045 ,  G09G2330/021 ,  G09G2330/028 ,  G09G2330/12 ,  G09G2360/12 ,  G09G2360/16

Abstract: A display apparatus includes a display panel, a driving controller, and a data driver. The driving controller generates a data signal based on input image data. The data driver converts the data signal into a data voltage and outputs the data voltage to the display panel. The driving controller includes a deterioration compensator. The deterioration compensator generates an alpha value based on a ratio between a sensed current read from a portion of the display panel applied with a high power voltage or a portion of the display panel applied with a low power voltage and a predicted current calculated from the input image data and generates the data signal using the input image data, a stress value of a pixel, and the alpha value.

公开(公告)号：US10216316B2

公开(公告)日：2019-02-26

申请号：US15157652

申请日：2016-05-18

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jong-Woong Park ,  Joo-Hyung Lee ,  Geun-Young Jeong ,  Sang-Jin Pak ,  Ji-Yeon Yang ,  Se-Il Cho

IPC: G06F3/041 ,  H04N13/31 ,  G06F3/044 ,  G09G5/00 ,  H04N13/00 ,  G02F1/13 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1368 ,  G06F3/047 ,  G09G3/00 ,  G09G3/36

Abstract: A 3-dimensional (3D) flat panel display with a built-in touch screen panel includes a first substrate, a plurality of pixels on the first substrate, a plurality of first electrode patterns spaced apart from one another at a first predetermined interval along a first direction, the plurality of first electrode patterns for driving the plurality of pixels, a second substrate positioned to face the first substrate, and a plurality of barrier patterns formed on an outer surface of the second substrate and spaced apart from one another at a second predetermined interval along a second direction, intersecting the first direction. At least one of the plurality of first electrode patterns and at least one barrier pattern of the plurality of barrier patterns serve as electrodes for the built-in touch screen panel.

公开(公告)号：US10078981B2

公开(公告)日：2018-09-18

申请号：US14613426

申请日：2015-02-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Gun-Hee Chung ,  Chang-Kyu Seol ,  Jun-Jin Kong ,  Jong-Woong Park ,  Hong-Rak Son ,  Hyun-Seuk Yoo ,  Joo-Hyung Lee

IPC: G09G5/00 ,  G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/048

Abstract: A controller for a display device includes an adjuster and a compensator. The adjuster adjusts at least one parameter of a modeling equation based on a measured current of a pixel. The modeling equation including the at least one adjusted parameter is indicative of a real time degree of degradation of the pixel. The compensator compensates for image data corresponding to emission of light from the pixel.

公开(公告)号：US09940872B2

公开(公告)日：2018-04-10

申请号：US15184945

申请日：2016-06-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Bo-Young An ,  Jae-Shin Kim ,  Ho-Suk Maeng ,  Jong-Woong Park

IPC: G09G3/32 ,  G09G3/3208 ,  G09G3/20

CPC classification number: G09G3/3208 ,  G09G3/2003 ,  G09G3/3233 ,  G09G2320/0242 ,  G09G2320/048 ,  G09G2330/026

Abstract: A degradation compensating device includes an accumulator configured to accumulate stress data every pixel block, a memory configured to receive the stress data from the accumulator, and to load accumulated data from an external flash memory when a display device power is turned on, the accumulated data being a total sum of the stress data, a compensation factor calculator configured to determine a target compensation factor based on the accumulated data to compensate image data, and to apply an initial compensation factor to the target compensation factor during a wake-up period after loading the accumulated data is completed, the initial compensation factor being changed gradually during the wake-up period, and a data compensator configured to generate image compensation data based on the target compensation factor, and to generate initial image data based on a wake-up factor that is an adjusted target compensation factor based on the initial compensation factor.