Quantum Dot Display Luminance Compensation via Temperature and Aging Data
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Solution Overview
Problem
Display panels with quantum dot technology experience luminance decreases due to temperature changes and quantum dot efficiency and life expectancy degradation, leading to suboptimal image quality.
Innovation Solution
A display apparatus and method that includes a gate driver, an image data compensator, and a data driver, where the image data compensator adjusts input image data based on temperature and quantum dot efficiency and life expectancy to generate compensation image data, ensuring consistent luminance across sub-pixel areas and adjusting white balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If quantum dot display panel is used to achieve high color quality, then color purity is improved, but luminance decreases occur due to temperature changes and quantum dot degradation
Solution Approach 1:
The patent applies preliminary action by compensating for quantum dot luminance degradation before it becomes visually apparent. The image data compensator proactively adjusts input image data based on temperature and quantum dot characteristics, preventing luminance decrease rather than correcting it after occurrence. This is achieved by storing compensation data in advance and applying it to maintain consistent display quality over the quantum dot's operational lifetime.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting image data parameters (brightness, color values) based on temperature variations and quantum dot degradation characteristics. The compensation process modifies the input image data parameters to counteract the physical changes in quantum dot performance, ensuring stable luminance output despite environmental and temporal factors.
2Stability of the object's composition
If temperature compensation is applied to correct luminance decrease, then display consistency is improved, but device complexity increases
Solution Approach 1:
The patent reduces device complexity through preliminary action by pre-calculating and storing compensation data for various temperature conditions and quantum dot aging states. Instead of requiring complex real-time calculation hardware, the system uses pre-prepared compensation lookup tables that simplify the actual compensation process to data retrieval and application, maintaining luminance consistency while minimizing additional circuit complexity.
Solution Approach 2:
The patent introduces an intermediary component (image data compensator) that acts as a mediator between the input image data and the display panel. This intermediary processes and adjusts the image data based on temperature and quantum dot characteristics, isolating the complexity of temperature compensation from the core display functionality and allowing independent optimization of each subsystem.
3Illumination intensity
If quantum dot layer is added to achieve color enhancement, then color saturation is improved, but manufacturing complexity increases
Solution Approach 1:
The patent addresses manufacturing complexity through parameter changes by adjusting the electrical parameters (voltage, current) of the existing display components to compensate for quantum dot characteristics. Rather than requiring precise physical customization of each quantum dot layer during manufacturing, the system achieves color optimization by modifying operational parameters, simplifying the manufacturing process while maintaining color saturation.
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 solution effectively compensates for luminance decreases, equalizes luminance across sub-pixel areas, and improves display quality by adjusting image data according to temperature and quantum dot performance.
Implementation Method 1
a liquid crystal layer interposed between the lower substrate and the upper substrate, and including a liquid crystal of which an arrangement is changed by an electric field between the pixel electrode to which a pixel voltage is applied and the common electrode to which a common voltage is applied
Implementation Method 2
a quantum dot layer disposed on the second base substrate and including the quantum dot... a red quantum dot layer disposed in a first sub pixel area, a green quantum dot layer disposed in a second sub pixel area
Data Source
AI summary
A display apparatus includes an image data compensator. The image data compensator receives input image data, compensates for the input image data according to a temperature of a display panel to output first compensation image data in order to compensate for a luminance decrease of the display panel according to the temperature of the display panel, and compensates for the first compensation image data according to an efficiency and a life expectancy of a quantum dot to output second compensation image data in order to compensate for a luminance decrease of the display panel by the quantum dot.