Backlight Lamp Segmentation for 3D Display Crosstalk Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current image display devices face challenges in reducing crosstalk and improving luminance when displaying 3D images, particularly in edge-type liquid crystal panel configurations with backlight lamps, and experience increased instantaneous load during backlight operation.
Innovation Solution
The method involves alternately aligning and displaying left-eye and right-eye images of a 3D image by turning on backlight lamps on the upper and lower sides of the display panel during specific periods, increasing the current flow for 3D image display compared to 2D, and optimizing the frame rate and backlight timing to prevent crosstalk and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If backlight lamps are continuously turned on during 3D image display, then luminance is improved, but crosstalk increases due to overlap between left-eye and right-eye images
Solution Approach 1:
The backlight lamps are driven in a periodic manner, turning on during the display period of one eye's image and turning off during the display period of the other eye's image. This periodic on-off action synchronized with the frame sequential 3D image display eliminates crosstalk while maintaining luminance during active periods
Solution Approach 2:
The backlight lamp operation is segmented into distinct time periods corresponding to left-eye and right-eye image display. By dividing the continuous backlight operation into discrete segments aligned with each eye's image period, the patent prevents overlap and crosstalk between alternating 3D images
2Illumination intensity
If all backlight lamps are turned on simultaneously, then luminance is improved, but instantaneous load increases
Solution Approach 1:
The backlight lamps are divided into multiple groups that operate at different time periods. Instead of all lamps turning on simultaneously, they are segmented into sequential groups that illuminate during different frames, reducing peak power consumption while maintaining overall luminance
Solution Approach 2:
Different groups of backlight lamps are activated periodically in sequence rather than simultaneously. This periodic activation pattern spreads the power demand over time, reducing instantaneous load while ensuring continuous illumination for 3D image display
Data Source
AI summary
An image display device and a method for operating the same are disclosed. The method for operating the image display device including a plurality of backlight lamps arranged on upper and lower sides of a rear surface of a display panel includes receiving a 3-Dimensional (3D) image, alternately aligning a left-eye image and a right-eye image of the 3D image, and alternately displaying the aligned left- and right-eye images. In the displaying step, the backlight lamps arranged on the upper side of the panel and the backlight lamps arranged on the lower side of the panel are turned on in a portion of a period of the left-eye image or the right-eye image.