Flat Panel Display Luminance Correction via Folded Sensor Feedback
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Solution Overview
Problem
Flat panel displays, such as OLED and LCD, experience luminance degradation over time, leading to reduced display quality and color coordinate changes, making it difficult to maintain optimum performance.
Innovation Solution
A flat panel display system that includes a sensor to detect luminance information and an optical correction unit to adjust the display's luminance by comparing detected values with reference data, ensuring the display quality is maintained by applying correction values stored in memory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If flat panel display is used for extended period, then display usage time increases, but luminance degrades and display quality reduces
Solution Approach 1:
The patent implements a feedback mechanism where a sensor continuously detects the luminance of the display unit and feeds this information back to an optical correction unit. The correction unit compares the detected luminance with reference luminance information and adjusts the display parameters to maintain optimal luminance levels, thereby resolving the contradiction between extended usage time and luminance maintenance.
Solution Approach 2:
The display system performs self-correction by using its own sensor to detect luminance degradation and automatically adjusting its parameters through the optical correction unit. This self-service mechanism eliminates the need for external calibration equipment and enables the display to maintain quality throughout its lifetime without manual intervention.
2Measurement precision
If optical correction is performed using external measuring instruments, then luminance control precision improves, but device complexity increases
Solution Approach 1:
The patent merges the optical correction functionality directly into the display device by integrating a sensor, optical correction unit, and control logic within the display itself. This consolidation eliminates the need for separate external measuring instruments while maintaining measurement precision, thereby resolving the contradiction between precision and device complexity.
Solution Approach 2:
The display device performs its own optical correction using integrated components rather than requiring external calibration equipment. The sensor detects luminance and the correction unit adjusts parameters autonomously, making the system self-sufficient and reducing overall device complexity while maintaining precision.
3Measurement precision
If display unit is folded toward input unit for correction, then luminance detection accuracy improves, but device operability during folding state is reduced
Solution Approach 1:
The patent implements periodic action by automatically switching between correction mode (folded state for accurate measurement) and normal operation mode (unfolded state for usability). The control unit detects the folding state and triggers luminance correction only when folded, allowing the device to achieve high measurement precision periodically without compromising overall operability during normal usage.
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
The system effectively maintains initial display quality by continuously correcting luminance, preventing luminance reduction and color coordinate changes, thus extending the display's optimal performance to at least half its lifetime.
Implementation Method 1
at least one sensor, the sensor detecting luminance information of a second image displayed on the display unit
Implementation Method 2
an optical correction unit, the optical correction unit receiving the luminance information from the sensor and correcting a luminance of the display unit using the luminance information
Data Source
AI summary
A flat panel display including a display unit, the display unit displaying a first image, an input unit, the input unit being positioned adjacent to the display unit when the display unit is folded toward the input unit, at least one sensor, the sensor detecting luminance information of a second image displayed on the display unit when the display unit is folded toward the input unit, and an optical correction unit, the optical correction unit receiving the luminance information from the sensor and correcting a luminance of the display unit using the luminance information.