Liquid Crystal Flip Timing in VR Image Display
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Solution Overview
Problem
Conventional VR devices experience unsmooth image display due to large differences in grayscale values between consecutive frame images, leading to prolonged liquid crystal flip times.
Innovation Solution
An image display method that compares grayscale values of pixels between current and preset images, and between next frame and preset images, to identify pixels needing adjustment. The liquid crystal at these pixels is flipped when the current image is completed, aligning with a target grayscale value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional VR devices directly switch between frame images with large grayscale differences, then the liquid crystal must flip through large angles, but this results in prolonged flip time and unsmooth image display
Solution Approach 1:
The patent applies preliminary action by pre-calculating the grayscale differences between consecutive frame images and identifying pixels that require adjustment before the actual frame switch occurs. This allows the system to prepare adjustment data in advance, so when the frame switch happens, the liquid crystal pixels only need to flip through small angles rather than large angles, significantly reducing flip time and improving display smoothness
Solution Approach 2:
The patent applies local quality by treating different pixels differently based on their individual grayscale change requirements. Instead of uniformly flipping all liquid crystal pixels through the same angle, the system identifies specific pixels that need adjustment and calculates their individual flip angles based on the grayscale differences. This localized approach ensures that only necessary pixels are adjusted, and they are adjusted by the minimum required angle, thereby reducing overall flip time and improving image transition smoothness
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
This method reduces the flipping angle and time of the liquid crystal, accelerating its flipping speed and improving the smoothness of image display in VR devices.
Implementation Method 1
flipping a liquid crystal at the pixel needed to be adjusted when display of the current image is completed, such that the pixel needed to be adjusted reaches a target grayscale value
Data Source
AI summary
Disclosed in some embodiments are an image display method and system, a display device, a head-mounted display device, and a medium. The method includes: comparing grayscale values of pixel points of a current image with grayscale values of pixel points of a preset grayscale image to obtain first comparison results, and comparing grayscale values of pixel points of the next frame of image of the current image with the grayscale values of the pixel points of the preset grayscale image to obtain second comparison results; comparing the first comparison result and the second comparison result corresponding to the pixel points at the same position to obtain a pixel point needing to be adjusted; and when the display of the current image is completed, flipping a liquid crystal at the pixel point needing to be adjusted, such that the pixel point needing to be adjusted reaches a target grayscale value.