Integrated 3D Optical Filter for Stereoscopic Display Crosstalk Reduction
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Solution Overview
Problem
Existing stereoscopic display devices face challenges with crosstalk due to the thick glass substrate between the optical filter and color filter layer, leading to mismatched pixels and poor separation of left-eye and right-eye image light, resulting in a suboptimal three-dimensional image quality.
Innovation Solution
A multifunctional optical filter integrates a 3D filter layer and color filter layer into a single unit with an adhesive layer, allowing for accurate alignment and reduced crosstalk, eliminating the need for a separate color filter substrate and enabling high-quality three-dimensional imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick glass substrate is used between the optical filter and color filter layer, then the structural strength is improved, but crosstalk increases and image quality deteriorates
Solution Approach 1:
The patent merges the optical filter and color filter into a single integrated filter unit, eliminating the thick glass substrate between them. This integration removes the source of crosstalk while maintaining structural integrity through the unified filter design with precise internal patterning.
Solution Approach 2:
The patent extracts and removes the thick glass substrate that causes crosstalk between the optical filter and color filter layer. By eliminating this intermediate element, the design achieves direct contact between the filters, preventing light leakage and improving image separation.
2Ease of manufacture
If separate optical filter and color filter substrates are used, then manufacturing flexibility is improved, but alignment precision between pixels and filter patterns deteriorates
Solution Approach 1:
The patent combines the optical filter and color filter patterns into a single substrate with pre-defined alignment relationships. This integration ensures that pixel positions and filter patterns are precisely matched from the outset, eliminating alignment errors that occur with separate substrates.
Solution Approach 2:
The patent performs preliminary patterning of both the optical filter and color filter layers on the same substrate before final assembly. This advance preparation ensures precise alignment is built into the structure, avoiding the need for complex post-assembly alignment procedures.
3Adaptability or versatility
If multiple separate filters are used, then functional versatility is improved, but device complexity increases
Solution Approach 1:
The patent creates a multifunctional integrated filter that performs both optical filtering and color separation in a single unit. This multi-functional design eliminates the need for multiple separate filters while maintaining all required functions, thereby reducing device complexity.
Solution Approach 2:
The patent merges multiple filter functions into a single integrated structure, reducing the total number of components. The unified filter simultaneously provides polarization control and color separation, simplifying the overall device architecture.
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
The integrated filter design significantly reduces crosstalk and ensures precise alignment of RGB patterns, resulting in a high-quality three-dimensional image without the need for additional color filters on the display panel substrate.
Implementation Method 1
A stereoscopic display device using a pair of polarized glasses projects left- and right-eye images having different respective polarization properties which allow only a left-eye image to be projected onto a left-eye lens and only a right-eye image to be projected onto a right-eye lens through polarizing plates
Implementation Method 2
an optical filter, which includes a 3D filter layer for changing a polarization state of one of the right-eye image light and left-eye image light, and a color filter layer having a RGB pattern
Data Source
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AI summary
Provided are a multifunctional optical filter for a stereoscopic display device and a stereoscopic display device including the same. The multifunctional optical filter includes a 3D filter layer patterned into a first region adjusting a polarization state of a right-eye image and a second region adjusting a polarization state of a left-eye image, and a color filter layer having a RGB pattern, wherein the RGB pattern of the color filter layer and the pattern of the 3D filter layer are formed to correspond to each other.