IP Library › Granted Patent US 11,087,681
Granted Patent B2
US 11,087,681 · App. 16/744,093 · Granted Aug 10, 2021

Display device and method of compensating pixel degradation of the same

Inventor: Jin-Woo Park (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/0238G09G2320/0295G09G2320/043G09G2320/045
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Quick Facts
Patent No.
US 11,087,681
App. No.
16/744,093
Granted
Aug 10, 2021
Kind
B2
Abstract

A display device includes a display panel including a first pixel that emits light with a first luminance that is lower than target luminance and a second pixel that emits light with a second luminance that is higher than the target luminance, a sensor configured to measure a first characteristic of a first light emitting element in the first pixel and a second characteristic of a second light emitting element in the second pixel, and a data compensator configured to calculate a degradation amount of the second pixel based on the first characteristic and the second characteristic.

Claims (9)

1. A method of compensating for pixel degradation of a display device that comprises a first pixel that emits light with a first luminance that is lower than a target luminance and a second pixel that emits light with a second luminance that is higher than the target luminance, the method comprising:

measuring a first characteristic of a first light emitting element comprised in the first pixel and a second characteristic of a second light emitting element comprised in the second pixel;

receiving a first measured luminance corresponding to the first characteristic and a second measured luminance corresponding to the second characteristic from an external component; and

generating a degradation compensation model based on the first characteristic, the second characteristic, the first measured luminance, and the second measured luminance,

wherein the degradation compensation model represents a relation between a characteristic variation and a luminance variation, the characteristic variation being a characteristic difference between the first characteristic and the second characteristic, and the luminance variation being a luminance difference between the first measured luminance and the second measured luminance, and

wherein the first pixel has a degradation rate lower than a degradation rate of the second pixel, and the second pixel comprises a plurality of pixels adjacent to and around the first pixel and is configured to compensate for a luminance deficiency of the first pixel by emitting light with the second luminance.

2. The method of claim 1 , wherein generating the degradation compensation model comprises:

calculating an initial characteristic difference of the second pixel based on the first characteristic and the second characteristic; and

storing the initial characteristic difference in a memory device.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 7, 2020
From: PARK, JIN-WOO
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 051750/0057 →
Priority Claims (1)
KR 10-2015-0127246 · Sep 8, 2015 · national
Continuity (2)
Division 15234981 · Aug 11, 2016
Related Publication 20200160785A1 · May 21, 2020