Dual-Layer LCD Ghosting Elimination via Eye Tracking
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Solution Overview
Problem
Image ghosting occurs in display panels with double-layer liquid crystal cells, causing display quality issues due to the gap between the first and second liquid crystal display panels, leading to noticeable ghost images especially at large viewing angles.
Innovation Solution
A display control method that adjusts the display position of the first image based on user input or eye tracking data, using a formula that considers the offset angle, refractive indices, and thicknesses of polarizers, adhesive layers, and diffusion films to determine the movement direction and distance, thereby reducing or eliminating image ghosting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a double-layer liquid crystal cell structure is used to achieve local dimming and improve contrast, then display contrast is improved, but image ghosting occurs due to the gap between panels
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-adjusting the display position of the first image based on eye tracking data before the user actually views the content. The system determines the offset angle in advance and uses this information to proactively position the first image at the correct location, preventing ghosting from occurring in the first place rather than correcting it after it appears
Solution Approach 2:
The patent implements feedback through the eye tracking system that continuously monitors user gaze and provides real-time information about viewing angle and position. This feedback loop allows the system to dynamically adjust the display position of the first image based on actual user viewing conditions, ensuring optimal alignment and eliminating ghosting adaptively as the user moves their eyes or head
2Object-affected harmful factors
If the display position of the first image is adjusted to eliminate ghosting, then image quality is improved, but additional control complexity is introduced
Solution Approach 1:
The patent uses an intermediary approach by introducing an optical adhesive layer with specific refractive index between the first and second liquid crystal display panels. This intermediary component optically couples the two panels, reducing the effective gap and minimizing ghosting through optical refraction principles, thereby solving the ghosting problem without requiring complex electronic control systems
Solution Approach 2:
The patent applies parameter changes by utilizing eye tracking data to dynamically calculate and adjust the display position parameters (offset angle, horizontal and vertical positions) of the first image. The system changes these display parameters in real-time based on measured viewing conditions, enabling adaptive ghosting elimination through parameter optimization rather than structural modification
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 method effectively reduces or eliminates image ghosting by precisely adjusting the display position of the first image, improving the display effect and user experience by minimizing the occurrence of ghost images.
Implementation Method 1
determining the movement direction and a movement distance based on an offset angle, a thickness and a refractive index of a first polarizer, a thickness and a refractive index of an optical adhesive layer, a refractive index of air, a thickness and a refractive index of a second liquid crystal display panel
Data Source
AI summary
The present disclosure provides a display control method, a display apparatus and a computer-readable storage medium. The display control method is applied to the display apparatus including a backlight component, and a first liquid crystal display panel and a second liquid crystal display panel that are stacked. The first liquid crystal display panel is located between the backlight component and the second liquid crystal display panel and configured to display a first image, and the second liquid crystal display panel is configured to display a second image. The method includes: in response to entering an image adjustment display mode, acquiring control information for controlling movement of a display position of the first image; and moving the display position of the first image based on the control information.