Stereoscopic Display Adhesive Segmentation for Cross Talk Reduction
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Solution Overview
Problem
Existing stereoscopic displaying apparatuses experience cross talk issues where part of the right eye image is transmitted to the left eye viewer due to the angle of field viewing, causing interference in the stereoscopic image display.
Innovation Solution
The method involves adhering the periphery and side surface of the image displaying section and phase shift plate with adhesive at multiple positions, and ensuring the surface of the image displaying section with light blocking sections on the phase shift plate are in contact to minimize cross talk by orthogonalizing the polarization axes of the right and left eye image lights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is applied between the image displaying section and phase shift plate, then assembly is simplified, but heat dissipation is impaired due to adhesive layer insulation
Solution Approach 1:
The adhesive application area is segmented into specific regions (periphery and side surfaces) rather than covering the entire bonding interface. This allows heat to dissipate through the central contact area between the light blocking section and the phase shift plate while still providing adequate bonding strength at the edges.
2Strength
If adhesive is applied at periphery and side surfaces, then bonding strength is improved, but heat dissipation path is blocked
Solution Approach 1:
Different regions of the bonding interface have different adhesive application characteristics. The periphery and side surfaces have adhesive for strong bonding, while the central region (light blocking section area) has no adhesive to maintain thermal contact and heat dissipation pathways.
3Reliability
If multiple adhering positions are used, then assembly reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The bonding process is segmented into distinct adhesive application steps: first applying adhesive to the periphery, then applying adhesive to the side surfaces. This segmented approach ensures reliable bonding at multiple locations while maintaining a relatively simple manufacturing process.
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 configuration effectively reduces cross talk, allowing the viewer to perceive a clear stereoscopic image by ensuring only the intended eye receives its corresponding image, while also facilitating heat dissipation from the image displaying section.
Implementation Method 1
the periphery of the image displaying section and the side surface of the phase shift plate can be adhered with adhesive at a plurality of adhering positions separated from each other
Implementation Method 2
Viewing with an angle of field from a position at the center of the vertical direction of the stereoscopic displaying apparatus, cross talk may occur such that a part of the right eye image generated by a liquid-crystal display panel is transmitted to the left eye of the viewer
Implementation Method 3
a phase shift plate arranged facing the two different regions and having two different regions on which the polarization axes of incident lights are orthogonalized to each other
Data Source
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AI summary
A method for manufacturing a stereoscopic displaying apparatus is provided. The method for manufacturing a stereoscopic displaying apparatus including: an image displaying section that has an image generating section including a right eye image generating region on which a right eye image is generated and a left eye image generating region on which a left eye image is generated and emits a right eye image light including the right eye image and a left eye image light including the left eye image as linear polarized lights of which polarization axes are in parallel with each other; and a phase shift plate having a first polarizing region and a second polarizing region, when the right eye image light is incident on the first polarizing region and the left eye image light is incident on the second polarizing region, respectively, that emits the incident right eye image light and left image light as linear polarized lights of which polarization axes are orthogonalized to each other or circularly polarized lights of which polarization axes are rotated in the directions opposite to each other. The method for manufacturing the stereoscopic displaying apparatus includes: arranging the first polarizing region and the second polarizing region adjacent to each other on the phase shift plate; providing a light blocking section that blocks the incident right eye image light and left eye image light on the boundary between the first polarizing region and the second polarizing region of one surface of the phase shift plate; and attaching to the image displaying section the phase shift plate such that one surface of phase shift plate on which the light blocking section is provided faces the image displaying section. The step of attaching the phase shift plate to the image displaying section includes adhering a periphery outside the regions on which the phase shift plate is provided, which is one surface of the image displaying section from which the right eye image light and the left eye image light are emitted to a side surface adjacent to the incident surface of the phase shift plate on which the right eye image light and the left eye image light are incident with adhesive.