3D Display Device Frame Insertion and Luminance Control
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Solution Overview
Problem
Current 3D image display devices, such as autostereoscopic and stereoscopic systems, face challenges in providing high-quality 3D images without the need for special glasses, as they often result in low-quality discrimination between images for the left and right eyes, and require additional costs for improved viewing quality.
Innovation Solution
A 3D image display device that alternately displays left-eye and right-eye images with insertion images, using glasses with alternating lens states to enhance discrimination, and incorporates a 3D image processor to improve luminance by adjusting frame durations and adding additional luminance data, employing a gamma converter, luminance improver, and reverse gamma converter to optimize image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If autostereoscopic 3D image display device with lenticular lens layer is used, then no special glasses are needed for viewing, but the images transferred to right and left eyes are not clearly discriminated resulting in low quality 3D effect
Solution Approach 1:
The patent applies periodic action by alternately displaying left-eye and right-eye images in sequential frames, with each eye's image displayed for one frame followed by three frames of insertion images. This periodic switching pattern, synchronized with the glasses' lens on/off states, enables clear image discrimination for each eye while maintaining autostereoscopic viewing without special glasses
Solution Approach 2:
The patent segments the display content into distinct left-eye images, right-eye images, and insertion images, with each type occupying specific frame positions in the sequence. This segmentation allows the glasses to selectively transmit appropriate images to each eye during corresponding time intervals, resolving the image discrimination problem while maintaining viewing convenience
2Manufacturing precision
If stereoscopic 3D image display device with additional glasses is used, then images transferred to left and right eyes can be more clearly discriminated with improved quality, but additional cost is required
Solution Approach 1:
The patent introduces a simple optical intermediary in the form of glasses with alternately switching lenses that act as a mediator between the display device and the viewer's eyes. This intermediary enables clear image discrimination by blocking inappropriate images from each eye during specific time intervals, achieving improved 3D quality without requiring complex stereoscopic display hardware
Solution Approach 2:
The patent changes the temporal parameters of image display by inserting three frames of insertion images between each left-eye and right-eye image pair, creating a specific time-sequence pattern. This parameter change in frame duration and timing enables synchronization with the glasses' lens switching, achieving clear image discrimination while keeping the display device itself relatively simple
3Manufacturing precision
If insertion images are displayed for three frames between left-eye and right-eye images, then image discrimination is improved, but display luminance may be reduced due to increased black frame duration
Solution Approach 1:
The patent changes the luminance parameter of insertion images from traditional black (zero luminance) to gray-level images with positive luminance values. This parameter change in insertion image brightness maintains the temporal separation needed for image discrimination while reducing the overall luminance loss, as the gray insertion images contribute positive light output during their three-frame display period
Solution Approach 2:
The patent applies color/brightness changes by displaying insertion images in gray levels rather than pure black, and potentially in different color tones distinguishable from the main left-eye and right-eye images. This color/brightness differentiation maintains clear image discrimination while improving overall display luminance, as the gray/colored insertion images emit light rather than absorbing all light like black images would
Data Source
AI summary
A 3D image display device includes a display device including a plurality of pixels and displaying each of a left-eye image and a right-eye image. The display device inserts an black image between the left-eye image and the right-eye image such that the left-eye image is displayed for part of four frames and the black image is displayed for the remaining frames and the right-eye image is displayed for part of four other frames and the black image is displayed for the remaining other frames.