Parallax Barrier Direct Formation on Substrate
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Solution Overview
Problem
Existing display devices with parallax barrier patterns face positional deviations and irregular gaps due to the use of adhesive layers between the polarizer and parallax barrier aperture array, affecting the accuracy and uniformity of the display.
Innovation Solution
The parallax barrier pattern is directly formed on the surface of either the element substrate or the opposing substrate, eliminating the need for an adhesive layer and reducing film thickness irregularities, thereby suppressing positional deviations and gap irregularities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an adhesive layer is used to attach the parallax barrier aperture array to the substrate, then the parallax barrier can be disposed on the substrate surface, but positional deviation of the parallax barrier aperture array with respect to the pixel or color filter occurs
Solution Approach 1:
The invention extracts and removes the adhesive layer from the structure, directly forming the parallax barrier aperture array on the substrate surface. This eliminates the source of positional deviation while maintaining the attachment function, as the parallax barrier is now an integral part of the substrate rather than a separate component requiring adhesive bonding.
Solution Approach 2:
The invention merges the parallax barrier aperture array with the substrate by directly forming it on the substrate surface. This integration eliminates the interface between separate components (adhesive layer), thereby preventing positional deviation and improving manufacturing precision while simplifying the overall structure.
2Ease of manufacture
If an adhesive layer is provided between the parallax barrier pattern and the substrate, then the parallax barrier pattern can be disposed on the substrate, but the gap between the parallax barrier pattern and substrate becomes irregular due to film thickness irregularity
Solution Approach 1:
The invention extracts and eliminates the adhesive layer from the structure, directly forming the parallax barrier aperture array on the substrate surface. This removal of the intermediate layer eliminates the source of gap irregularity, as there is no longer any adhesive layer whose film thickness variations could cause non-uniform gaps.
Solution Approach 2:
The invention merges the parallax barrier aperture array with the substrate into a single integrated structure. By eliminating the adhesive layer interface, the gap uniformity is improved because the parallax barrier is now part of the substrate itself rather than a separate component separated by a variable-thickness adhesive layer.
3Ease of manufacture
If a separate layer such as adhesive layer is provided between the substrate and parallax barrier pattern, then the components can be assembled, but the structure complexity and number of layers increases
Solution Approach 1:
The invention merges the parallax barrier aperture array with the substrate by directly forming it on the substrate surface, eliminating the adhesive layer. This integration reduces the total number of layers in the display structure while maintaining the functional relationship between the parallax barrier and substrate, thereby simplifying the overall device complexity.
Solution Approach 2:
The invention extracts and removes the adhesive layer from the multi-layer structure, reducing the total number of layers. This simplification maintains the essential assembly function while eliminating unnecessary intermediate layers, thereby reducing device complexity and the number of manufacturing steps required.
Data Source
AI summary
A display device includes: an element substrate having a transistor element formed on a surface thereof; an opposing substrate which is disposed to face the element substrate; and a parallax barrier pattern which is directly formed on the surface of either substrate of the element substrate or the opposing substrate at the side opposite to the transistor element side.