Stereoscopic Display Parallax Unit with Tiltable Optical Elements
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Solution Overview
Problem
Conventional stereoscopic image display devices face challenges in changing the image display direction while minimizing 3D crosstalk, as the tilt angle of optical elements relative to the y-axis direction is limited, leading to strong crosstalk when the image is rotated.
Innovation Solution
A stereoscopic image display device with a display panel featuring sub-pixels arranged in a matrix and a parallax unit with optical elements tilted at 30° to 60° relative to the vertical direction, allowing for a changeable display direction by constructing and amending view maps to ensure sub-pixels display the same or different view images, thereby minimizing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the tilt angle of optical elements is increased to change image display direction, then the image can be rotated, but 3D crosstalk increases strongly
Solution Approach 1:
The patent applies dynamics by making the optical elements tiltable at multiple predetermined angles rather than fixed at a single angle. This allows the display device to dynamically adjust the tilt angle according to the desired image display direction, maintaining optimal performance across different orientations. The optical elements can be rotated to specific angles (e.g., 0°, 45°, 90°, 135°) to match the image rotation angle, ensuring that the tilt angle relative to the y-axis remains within the optimal range regardless of the display direction.
Solution Approach 2:
The patent changes the parameter of tilt angle to resolve the contradiction. By providing optical elements with tiltable structures that can be adjusted to multiple predetermined angles, the system maintains the tilt angle within the optimal 0-10 degree range relative to the y-axis even when the image display direction changes. This parameter adjustment ensures that 3D crosstalk remains minimized while allowing flexible image orientation changes.
2Object-affected harmful factors
If the tilt angle of optical elements is limited to 0-10 degrees to reduce crosstalk, then 3D image quality is maintained, but image display direction cannot be changed
Solution Approach 1:
The patent makes the optical elements dynamically adjustable through tilting mechanisms that allow rotation to multiple predetermined angles. This dynamic capability enables the system to adapt the optical element orientation to match any image display direction while maintaining the optimal tilt angle range, thus resolving the limitation on image direction changeability.
Solution Approach 2:
The patent implements multi-functionality by enabling the optical elements to serve multiple purposes: maintaining low crosstalk through optimal tilt angles while simultaneously supporting various image display directions. The tiltable optical elements can be adjusted to different angles to accommodate different viewing scenarios and image orientations, making the display device universally applicable across multiple configurations.
3Ease of manufacture
If optical elements are fixed at a specific tilt angle, then manufacturing is simplified, but the display device cannot adapt to different viewing directions
Solution Approach 1:
The patent introduces dynamic tilting capability to the optical elements, allowing them to be adjusted to multiple predetermined angles after installation. This dynamic feature adds adaptability without significantly complicating the manufacturing process, as the tilting mechanism can be integrated into the existing optical element structure or mounting system.
Solution Approach 2:
The patent applies preliminary action by providing optical elements that are pre-configured with tilting capabilities and predetermined angle positions. This allows the elements to be easily installed in their initial position while retaining the ability to be adjusted to other predetermined angles if needed, combining manufacturing simplicity with operational flexibility.
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
Enables the display of images in various orientations without 3D crosstalk, allowing for flexible image direction changes within a 0° to 360° range, reducing crosstalk and enhancing viewer experience.
Implementation Method 1
a parallax unit on the display panel and including a plurality of optical elements having a tilt angle of 30° to 60° relative to the vertical direction
Implementation Method 2
optical elements having a tilt angle of 30° to 60° relative to the vertical direction
Data Source
AI summary
A stereoscopic image display device including a display panel including a plurality of sub-pixels arranged in a matrix defined by a horizontal direction and a vertical direction, the display panel having a changeable display direction; and a parallax unit on the display panel and including a plurality of optical elements having a tilt angle of 30° to 60° relative to the vertical direction and a pitch corresponding to a multiple of a pitch of the sub-pixels. Among the sub-pixels located to correspond to each of the optical elements, at least two sub-pixels, adjacently arranged, display the same view image.