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：US10078982B2

公开(公告)日：2018-09-18

申请号：US15130855

申请日：2016-04-15

Applicant: Samsung Display Co., Ltd.

Inventor： Changyun Moon ,  Wonju Shin

IPC: G09G3/30 ,  G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0242 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2330/021 ,  G09G2360/145

Abstract: An apparatus to determine a driving voltage includes: a color coordinate value comparator to measure a color coordinate value of an organic light-emitting display apparatus, to calculate a difference value between the measured color coordinate value and a fiducial color coordinate value, and to compare the calculated difference value with a first critical value; a voltage level changer to increase an absolute value of a driving voltage applied to each pixel of the organic light-emitting display apparatus when the difference value is greater than or equal to the first critical value; and a voltage level determiner to determine a level of the driving voltage at a point of time when the difference value is calculated as a final level of a driving voltage, when the difference value is less than the first critical value.

公开(公告)号：US20160372051A1

公开(公告)日：2016-12-22

申请号：US15130855

申请日：2016-04-15

Applicant: Samsung Display Co., Ltd.

Inventor： Changyun Moon ,  Wonju Shin

IPC: G09G3/3283 ,  G09G3/3258 ,  G09G3/00 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G2320/0242 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2330/021 ,  G09G2360/145

Abstract: An apparatus to determine a driving voltage includes: a color coordinate value comparator to measure a color coordinate value of an organic light-emitting display apparatus, to calculate a difference value between the measured color coordinate value and a fiducial color coordinate value, and to compare the calculated difference value with a first critical value; a voltage level changer to increase an absolute value of a driving voltage applied to each pixel of the organic light-emitting display apparatus when the difference value is greater than or equal to the first critical value; and a voltage level determiner to determine a level of the driving voltage at a point of time when the difference value is calculated as a final level of a driving voltage, when the difference value is less than the first critical value.

Abstract translation: 用于确定驱动电压的装置包括：颜色坐标值比较器，用于测量有机发光显示装置的色坐标值，以计算测量的色坐标值与基准色坐标值之间的差值，并进行比较 所计算的差值具有第一临界值; 当所述差值大于或等于所述第一临界值时，增加施加到所述有机发光显示装置的每个像素的驱动电压的绝对值的电压电平改变器; 以及电压电平确定器，用于当所述差值小于所述第一临界值时，在所述差值被计算为驱动电压的最终电平的时间点确定驱动电压的电平。