OLED Burn-In Compensation via User Touch Input

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Solution Overview

Problem

Organic light emitting display devices suffer from luminance non-uniformity and burn-in phenomena due to OLED degradation, requiring accurate compensation that aligns with user-perceived issues rather than internal device assessments.

Innovation Solution

A data processing device and method that utilizes touch input to identify and compensate for burn-in regions by classifying pixels in the affected area using touch and pixel sensing data, comparing characteristic values to determine degradation and apply targeted compensation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If internal pixel sensing is used to detect OLED degradation, then degradation can be detected, but the detection does not accurately reflect user-perceived burn-in regions

Engineering Contradiction:

Improvedegradation detection accuracyVSAvoiduser-perceived burn-in information

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent introduces touch input as an intermediary to bridge the gap between internal sensor data and user perception. Users directly indicate burn-in regions through touch gestures, providing accurate spatial information about where burn-in is perceived, which then guides the compensation process to target only those specific regions.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If full pixel sensing is performed to detect burn-in, then comprehensive degradation data is obtained, but processing time and complexity increase significantly

Engineering Contradiction:

Improveburn-in detection reliabilityVSAvoidcompensation processing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies local quality by performing pixel sensing and compensation only in the specific rub region identified through touch input, rather than processing the entire display panel. This localized approach maintains reliable burn-in detection in the affected area while significantly reducing processing time and computational resources required.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The display panel is segmented into a rub region (identified by touch input) and non-rub regions. Only the rub region undergoes detailed pixel sensing and compensation processing, while other regions are excluded from the process, thereby reducing overall processing time and complexity.

Inventive Principle:

Principle #1Segmentation

3Stability of the object's composition

If degradation compensation is applied to the entire display panel, then overall luminance uniformity is improved, but user-perceived burn-in regions are not specifically targeted

Engineering Contradiction:

Improveluminance uniformityVSAvoidcompensation targeting precision

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The patent implements local quality by applying degradation compensation exclusively to the rub region identified through touch input, rather than uniformly across the entire display panel. This ensures that compensation is precisely targeted to where users perceive burn-in, improving both luminance uniformity in the affected area and the precision of compensation application.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11635850B2Device and method for degradation compensation of an area selected for rubbing

Publication Date: 2023.04.25 LX SEMICON CO LTD

AI summary

Provided are a data processing device, a display device, and deterioration compensation method of the data processing device to determine a burn-in occurrence region by recognizing a user's touch in a display device including a touch function and accurately perform a degradation compensation on the burn-in occurrence region.