Display Panel Optical Sensor Subpixel Degradation Compensation
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Solution Overview
Problem
Current display technology lacks the ability to monitor and compensate for degradation of subpixels, such as light emitting elements and transistors, in real-time after the display device is manufactured, making it difficult to maintain image quality and efficiency as these components age with use.
Innovation Solution
A display device and method that incorporates optical electronic devices, such as cameras and sensors, under the display panel to perform real-time degradation monitoring and compensation by executing image capturing or sensing operations during periods when the device is not in use or during screen setting inputs, allowing for accurate luminance measurement and adjustment of subpixel performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical electronic devices are added under the display panel for real-time degradation monitoring, then measurement precision and reliability are improved, but device complexity increases
Solution Approach 1:
The optical electronic device positioned under the display panel performs multiple functions: it captures images through the display area for degradation monitoring, senses light for quality assessment, and enables real-time compensation measurements without requiring separate dedicated sensors for each function.
Solution Approach 2:
The display panel itself serves as an intermediary medium that allows optical electronic devices positioned underneath to capture images and sense light by transmitting optical signals through the display area, eliminating the need for separate optical access paths.
2Measurement precision
If the display panel structure is modified to allow optical access for degradation monitoring, then measurement precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The display panel is segmented into distinct functional areas: a display area with light emitting areas for normal operation, light transmission areas for optical access, and a non-optical area. This segmentation allows the optical electronic device to receive light signals through designated transmission regions without compromising the overall manufacturing process.
Solution Approach 2:
Different regions of the display panel have different optical properties: the light transmission areas are designed to allow optical signals to pass through for degradation monitoring, while other areas maintain normal display characteristics. This local differentiation enables simultaneous display functionality and degradation measurement.
3Reliability
If real-time degradation monitoring is implemented, then reliability is improved, but loss of time for monitoring operations increases
Solution Approach 1:
The optical electronic device performs image capturing and sensing operations periodically during predetermined periods when the display device is not actively displaying content or during screen setting inputs, rather than continuously. This periodic operation reduces time loss while maintaining reliable degradation monitoring capability.
Solution Approach 2:
The system monitors its own degradation state using the optical electronic device and automatically performs compensation operations based on the measured luminance changes, eliminating the need for external intervention and reducing operational downtime.
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 monitoring and compensation of subpixel degradation, improving image quality and extending the lifespan of display devices by addressing the issue of aging components, thereby maintaining optimal performance even after manufacturing.
Implementation Method 1
one or more optical areas that partially overlap the one or more optical electronic devices... the one or more optical electronic devices overlaps at least a portion of the plurality of first light emitting areas in the one or more optical areas, and performs an image capturing operation or a sensing operation through the one or more optical areas
Data Source
AI summary
A display device and method of operating the display device is disclosed. The display device and method accurately compensate for the degradation of subpixels by monitoring the degradation in real time using an optical electronic device located under, or at a lower portion of, a display panel and partially overlapping an optical area in the display area. Such monitoring of the degradation can be performed in real time using such an optical element or device even in a situation where the display device is used, and the compensation of the degradation can be performed in real time in accordance with the result of the monitoring.