公开(公告)号：US10192491B2

公开(公告)日：2019-01-29

申请号：US15782780

申请日：2017-10-12

Applicant: Samsung Display Co., Ltd. ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Do Hyung Ryu ,  Bo Yong Chung ,  Hong Kwon Kim ,  Oh Kyong Kwon

IPC: G09G5/10 ,  G09G3/3291 ,  G09G3/3233

Abstract: A data driver capable of displaying images with a substantially uniform brightness, an organic light emitting display device using the same, and a method of driving the organic light emitting display device. The data driver includes a plurality of current sink units for controlling predetermined currents to flow through data lines, a plurality of voltage generators for resetting values of gray scale voltages using compensation voltages generated when the predetermined currents flow, a plurality of digital-to-analog converters for selecting one gray scale voltage among the gray scale voltages as a data signal in response to bit values of the data supplied from the outside, and a plurality of switching units for supplying the data signal to the data lines. The predetermined currents may be set equal to pixel currents that correspond to a maximum brightness.

公开(公告)号：US09812065B2

公开(公告)日：2017-11-07

申请号：US14150614

申请日：2014-01-08

Applicant: SAMSUNG DISPLAY CO., LTD. ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Do Hyung Ryu ,  Bo Yong Chung ,  Hong Kwon Kim ,  Oh Kyong Kwon

IPC: G09G5/10 ,  G09G3/3291 ,  G09G3/3233

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0276 ,  G09G2320/043 ,  G09G2352/00

Abstract: A data driver capable of displaying images with a substantially uniform brightness, an organic light emitting display device using the same, and a method of driving the organic light emitting display device. The data driver includes a plurality of current sink units for controlling predetermined currents to flow through data lines, a plurality of voltage generators for resetting values of gray scale voltages using compensation voltages generated when the predetermined currents flow, a plurality of digital-to-analog converters for selecting one gray scale voltage among the gray scale voltages as a data signal in response to bit values of the data supplied from the outside, and a plurality of switching units for supplying the data signal to the data lines. The predetermined currents may be set equal to pixel currents that correspond to a maximum brightness.

公开(公告)号：US20220063233A1

公开(公告)日：2022-03-03

申请号：US17315323

申请日：2021-05-09

Applicant: Samsung Display Co., Ltd.

Inventor： DONG EUN LEE ,  Do Hyung Ryu ,  Hyun Sang Park

IPC: B32B3/08 ,  B32B27/08

Abstract: A display device includes a display panel that is bent so that at least a portion of the display panel overlaps another portion of the display panel; and a spacer surrounded by the display panel and that includes a flat portion and a bent portion connected to the flat portion, where an upper surface of the bent portion has a first curvature and a lower surface of the bent portion has a second curvature that differs from the first curvature.

公开(公告)号：US20180033377A1

公开(公告)日：2018-02-01

申请号：US15782780

申请日：2017-10-12

Applicant: Samsung Display Co., Ltd. ,  IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)

Inventor： Do Hyung Ryu ,  Bo Yong Chung ,  Hong Kwon Kim ,  Oh Kyong Kwon

IPC: G09G3/296 ,  G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0276 ,  G09G2320/043 ,  G09G2352/00

Abstract: A data driver capable of displaying images with a substantially uniform brightness, an organic light emitting display device using the same, and a method of driving the organic light emitting display device. The data driver includes a plurality of current sink units for controlling predetermined currents to flow through data lines, a plurality of voltage generators for resetting values of gray scale voltages using compensation voltages generated when the predetermined currents flow, a plurality of digital-to-analog converters for selecting one gray scale voltage among the gray scale voltages as a data signal in response to bit values of the data supplied from the outside, and a plurality of switching units for supplying the data signal to the data lines. The predetermined currents may be set equal to pixel currents that correspond to a maximum brightness.

公开(公告)号：US10062328B2

公开(公告)日：2018-08-28

申请号：US15222582

申请日：2016-07-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon Lee ,  Jin Woo Kim ,  Do Hyung Ryu ,  Jae Woo Song ,  Hae Goo Jung

IPC: G06F3/038 ,  G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0271 ,  G09G2320/0285 ,  G09G2320/045 ,  G09G2320/046 ,  G09G2320/048 ,  G09G2330/028

Abstract: An organic light emitting display device includes: pixels including driving transistors positioned in regions divided by scan lines and data lines; a data accumulating unit arranged to accumulate first data; a first storage unit storing current and voltage change information corresponding to a degradation of an organic light emitting diode (OLED); a second storage unit storing a compensation value corresponding at least partially to channel length modulation of the driving transistors; and a timing controller programmed to carry out an altering of first data corresponding to an ith pixel so as to generate second data to be supplied to the ith pixel, the altering carried out according to: accumulation stress information for the ith pixel, the accumulation stress information corresponding to the accumulated first data and being stored in the data accumulating unit, the current and voltage change information, and a compensation value corresponding to the ith pixel.

公开(公告)号：US10019939B2

公开(公告)日：2018-07-10

申请号：US15140332

申请日：2016-04-27

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon Lee ,  Seung Ho Park ,  Do Hyung Ryu ,  Jae Woo Song ,  Hae Goo Jung

IPC: G09G3/32 ,  G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2320/0238 ,  G09G2320/0271 ,  G09G2320/041 ,  G09G2320/048 ,  G09G2320/0686

Abstract: An organic light emitting display device includes a display panel having pixels and a display panel driver driving the display panel. Each of the pixels includes an organic light emitting diode, and the display panel driver selects one of the pixels, determines a reference grayscale value, compares a grayscale value, and determines the selected pixel as a low grayscale pixel when the grayscale value is lower than the reference grayscale value and higher than a black grayscale value. Some of the low grayscale pixels display the black grayscale value when there are more than one neighboring low grayscale pixels. The reference grayscale value is determined based on a reference grayscale variable, and the reference grayscale variable includes at least one of a temperature of the display panel, a time period when the selected pixel emits light, and a wavelength of light emitted by the selected pixel.

公开(公告)号：US11999147B2

公开(公告)日：2024-06-04

申请号：US17315504

申请日：2021-05-10

Applicant: Samsung Display Co., LTD.

Inventor： Dae Hyun Hwang ,  Do Hyung Ryu ,  Hyun Sang Park ,  Wu Hyeon Jung

IPC: B32B37/10 ,  B32B3/04

CPC classification number: B32B37/10 ,  B32B3/04 ,  B32B2457/20

Abstract: An apparatus for attaching a display panel includes a panel mount which receives a panel bottom cover facing corner portions of the display panel which are extended bent from a front surface of the display panel, and a pressing module which provides a pressing force to the panel bottom cover which is received in the panel mount and faces the corner portions of the display panel. The pressing module includes a pressing pad which applies the pressing force to the panel bottom cover at the corner portions of the display panel to attach the panel bottom cover to the display panel at the corner portions thereof.

公开(公告)号：US20230009706A1

公开(公告)日：2023-01-12

申请号：US17731223

申请日：2022-04-27

Applicant: Samsung Display Co., Ltd.

Inventor： Dae Hyun HWANG ,  Do Hyung Ryu ,  Wu Hyeon Jung ,  Yong Seong Jang

IPC: H01L51/56 ,  B32B37/10 ,  B32B38/18

Abstract: A apparatus for manufacturing a display device includes: a stage for supporting a display module including a display panel, a cover window, and a flexible printed circuit board; and an adsorption unit disposed at one side of the stage, the adsorption unit configured to be moved in a horizontal direction such that a distance between the stage and the adsorption unit is adjusted, wherein the adsorption unit is configured to adsorb and support the flexible printed circuit board connected to the display panel.

公开(公告)号：US11433657B2

公开(公告)日：2022-09-06

申请号：US16797860

申请日：2020-02-21

Applicant: Samsung Display Co., LTD.

Inventor： Wu Hyeon Jung ,  Do Hyung Ryu ,  Dae Yang Bak ,  Dae Hyun Hwang

IPC: B32B38/10 ,  B32B37/12

Abstract: A method of peeling off the protective film includes: providing a panel lower sheet, where a protective film is provided on one surface of the plane lower sheet and the protective film has a bending line extending in a first direction parallel to opposing sides thereof; gripping a portion of the protective film; moving the gripped portion of the protective film in a second direction which is a thickness direction thereof; and moving the panel lower sheet in a third direction perpendicular to the bending line.

公开(公告)号：US10083655B2

公开(公告)日：2018-09-25

申请号：US15184901

申请日：2016-06-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Hoon Lee ,  Young In Hwang ,  Ji Hye Kong ,  Jin Woo Kim ,  Do Hyung Ryu ,  Yong Sung Park ,  Jae Woo Song ,  Byung Hyuk Shin ,  Hae Goo Jung

IPC: G09G3/32 ,  G09G3/3233 ,  H01L27/12

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1255

Abstract: A pixel includes: a first transistor connected between a data line and a first node; a second transistor connected between a first power source and a second node, the second transistor including a gate electrode connected to the first node; a third transistor connected between the first node and a third power source; a fourth transistor connected between the second node and an fourth power source; a capacitor connected between the first node and the second node; and an organic light-emitting diode (OLED) connected between the second node and a second power source.