Foldable Display Panel Self-Compensation via Sub-Pixel Optical Detection
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Solution Overview
Problem
Conventional display technologies face challenges in performing real-time image compensation for foldable OLED display panels, leading to poor compensation effects and increased storage requirements due to fixed compensation data that cannot adapt to changes in the panel's state over time.
Innovation Solution
A foldable display panel design with sub-pixels that have both display and optical information detecting functions, allowing for real-time optical compensation by detecting optical information when the panels are folded, generating compensation data, and applying it to improve image quality without affecting normal use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If optical compensation method is used with fixed compensation data written before factory, then implementation is simple and resolution is improved, but compensation cannot be performed in real-time and compensation effect deteriorates due to panel state changes over time
Solution Approach 1:
The patent implements dynamic compensation by enabling the display panel to perform self-detection and self-compensation operations during its usage lifecycle. The panel can detect its current state (such as aging characteristics) and dynamically adjust compensation parameters, transitioning from static factory-fixed compensation to dynamic real-time compensation, thereby maintaining compensation effectiveness throughout the panel's operational life.
Solution Approach 2:
The display panel is designed with self-detection and self-compensation capabilities, where the panel itself performs detection of its optical characteristics and generates compensation data without requiring external compensation devices. This self-service mechanism allows the panel to autonomously adapt to its aging process and maintain display quality over time.
2Measurement precision
If optical compensation method is used with large amount of compensation data, then resolution is improved, but additional storage space is required and cost increases
Solution Approach 1:
The patent segments the compensation process into multiple stages: detection phase where optical characteristics are measured, processing phase where compensation data is generated from detected information, and application phase where compensation is applied to display content. This segmentation allows efficient data management by only storing essential compensation parameters rather than complete compensation datasets, reducing storage requirements while maintaining compensation resolution.
Solution Approach 2:
The patent changes the representation parameters of compensation data by detecting optical characteristics and converting them into compact compensation parameters. Instead of storing large amounts of raw compensation data, the system stores transformed parameters that can be efficiently applied during display operation, thereby reducing storage space while preserving compensation effectiveness.
3Extent of automation
If sub-pixels are used for both display and optical information detecting functions, then real-time compensation is enabled, but device structure becomes more complex
Solution Approach 1:
The patent implements multi-functionality by designing sub-pixels that can operate in dual modes: display mode for showing images and detection mode for measuring optical characteristics. The same physical sub-pixel structure serves both purposes, eliminating the need for separate detection components and reducing overall device complexity while enabling real-time compensation capabilities.
Solution Approach 2:
The patent merges the display function and optical detection function into a single integrated sub-pixel structure. By combining these two functions that were traditionally separate into one unified component, the system achieves real-time compensation capability without proportionally increasing device complexity, as the merged structure shares common physical and control resources.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables real-time optical image compensation multiple times during the panel's use, reducing the amount of compensation data needed and prolonging hardware life by performing compensation only when the panel is in a folded state, thus maintaining image quality and reducing storage requirements.
Implementation Method 1
each of the multiple sub-pixels on the first display panel and the multiple sub-pixels on the second display panel has a display function and an optical information detecting function
Data Source
AI summary
A foldable display panel, a display device, an image compensation method and an image compensation device are provided. The foldable display panel includes a first display panel and a second display panel which are foldable toward each other along a joining edge, and each of sub-pixels on the two display panels has an optical information detecting function. In a case that the first display panel and the second display panel are in a folded state, each of the sub-pixels on one display panel is used for detecting optical information of a corresponding sub-pixel on the other display panel, to perform optical compensation on the sub-pixel. Since optical information detection and image compensation are performed in a case that the foldable display panel is in the folded state, the use of the foldable display panel is not affected.