3D Display Gamma Compensation for Liquid Crystal Response Speed
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Solution Overview
Problem
Three-dimensional image display apparatuses face issues with response speed of liquid crystal molecules and mixing of left-eye and right-eye images due to scanning methods, leading to deterioration in display quality.
Innovation Solution
A display apparatus comprising a timing controller, data driver, detector, and display panel that alternately outputs image signals for left-eye and right-eye perspectives during 3D mode, and compensates gamma values to improve frame change rate and prevent image quality deterioration by adjusting data voltages and mode signals based on 3D or 2D operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel alternately displays left-eye and right-eye images during 3D mode, then three-dimensional image display is achieved, but the response speed of liquid crystal molecules decreases and image mixing occurs
Solution Approach 1:
The patent applies periodic action by alternately displaying left-eye and right-eye images at specific time intervals synchronized with the liquid crystal shutter glasses. The display controller alternates between displaying the left-eye image during periods when the left shutter is open and the right-eye image during periods when the right shutter is open, creating a periodic display pattern that enables 3D perception while managing the response time constraints of liquid crystal molecules.
2Adaptability or versatility
If the display panel alternately displays left-eye and right-eye images during 3D mode, then three-dimensional image display is achieved, but image mixing between left-eye and right-eye images occurs
Solution Approach 1:
The patent uses periodic action to synchronize the display of left-eye and right-eye images with the periodic opening and closing of the liquid crystal shutters. By controlling the timing so that each eye's image is displayed only during the corresponding shutter's open period, the system prevents image mixing and maintains high image quality while enabling 3D display functionality.
Solution Approach 2:
The patent implements feedback mechanisms where the display controller monitors the synchronization status between the displayed images and the shutter states. By detecting whether the left-eye or right-eye image is currently being displayed and adjusting subsequent display timing accordingly, the system ensures that images are only shown when the corresponding shutter is open, thereby preventing image mixing and maintaining precise image quality.
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 enhances the response speed of liquid crystal molecules and reduces image mixing, thereby maintaining or improving image quality during transitions between 3D and 2D modes by compensating gamma values and adjusting frame change rates.
Implementation Method 1
A three-dimensional image display apparatus alternately displays images having two different perspectives... in order to create the illusion of a three-dimensional image
Implementation Method 2
When the image displayed on the display panel is changed from a first perspective image... to a second perspective image... the left-eye image and the right-eye image may be mixed with each other
Data Source
AI summary
In a display apparatus and a driving method thereof, a detector determines whether a timing controller is operated in a three-dimensional (3D) mode or a two-dimensional (2D) mode to output a first or second mode signal according to a result of the determination. A compensator compensates for a gamma value of a 3D image to be increased in response to a first mode signal when the 2D mode is converted to the 3D mode and decreases an increased gamma value to a gamma value for a 2D image in response to a second mode signal when the 3D mode is converted to the 2D mode.