Liquid Crystal Display Device With Asymmetric Pixel Arrangement
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Solution Overview
Problem
Existing liquid crystal display devices face issues with moiré interference and limited brightness in three-dimensional image display, along with challenges in optimizing light distribution and switching between three-dimensional and two-dimensional images effectively.
Innovation Solution
A liquid crystal display device configuration featuring laterally elongated pixels with line-symmetric arrangements, negative dielectric constant anisotropy liquid crystal molecules, and an optical control element with triangular and cylindrical prisms, which allows for controlled light emission and rotation of liquid crystal molecules to eliminate moiré and enhance display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If lenticular lenses are used for three-dimensional image display, then glasses-free three-dimensional display is achieved, but moiré interference and display non-uniformity occur
Solution Approach 1:
The patent employs asymmetric pixel arrangements and asymmetric optical control element designs to eliminate moiré interference. Specifically, the pixel array is configured with asymmetric positioning relative to the lenticular lens array, and the liquid crystal molecules are oriented with asymmetric tilt angles, which disrupts the periodic interference patterns that cause moiré effects while maintaining three-dimensional display functionality.
Solution Approach 2:
The patent applies local quality optimization by varying the orientation and properties of liquid crystal molecules in different regions of the display. The liquid crystal molecules are configured with specific tilt directions and angles that are optimized for local optical performance, allowing different regions to contribute differently to the overall display quality and reducing uniformity issues.
2Illumination intensity
If optical control elements are added to control light emission angles, then viewing angle control is improved, but device complexity increases
Solution Approach 1:
The patent merges the optical control function with the existing pixel structure and liquid crystal layer. The lenticular lenses are integrated directly with the pixel array, and the liquid crystal molecules serve dual purposes of image formation and light direction control. This integration eliminates the need for separate optical control components, reducing device complexity while maintaining viewing angle control capability.
Solution Approach 2:
The liquid crystal molecules in the patent perform multiple functions: they control the image content displayed, regulate the orientation of light emission, and work in conjunction with the lenticular lenses to achieve viewing angle control. This multi-functionality reduces the need for additional dedicated components, simplifying the overall device structure.
3Ease of operation
If liquid crystal molecules with negative dielectric constant anisotropy are used, then light rotation control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements preliminary alignment actions during the manufacturing process, where the liquid crystal molecules are pre-oriented with specific tilt angles and directions before final assembly. Alignment layers and rubbing treatments are applied in advance to establish the desired molecular orientation, reducing the precision requirements during subsequent assembly and operation stages.
Solution Approach 2:
The patent utilizes the specific optical parameters of liquid crystal molecules with negative dielectric constant anisotropy, particularly their response to electric fields and their light rotation properties. By carefully selecting and tuning these molecular parameters, the system achieves improved light control while the manufacturing precision requirements are managed through standardized material specifications and process controls.
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 solution effectively eliminates display non-uniformity, achieves high-quality three-dimensional imaging, and enables easy switching between three-dimensional and two-dimensional displays with improved brightness and reduced color non-uniformity.
Implementation Method 1
Liquid crystal molecules having a negative dielectric constant anisotropy rotate horizontally relative to a substrate plane in a direction of line-symmetry with respect to a center line of the neighboring pixels when a liquid crystal driving voltage is applied to the pixel electrodes corresponding to the neighboring pixels
Implementation Method 2
an optical control element with triangular and cylindrical prisms, which allows for controlled light emission
Data Source
AI summary
A device according to an embodiment includes an array substrate including electrodes corresponding to pixels arranged in a matrix, a color filter substrate opposed to the array substrate and including color filters corresponding to the pixels, a liquid crystal layer provided between the substrates, a backlight, and a controller which controls the substrates and the backlight. The pixels are configured to each have a parallelogrammatic shape elongated in a lateral direction, such that identical colors are arranged in the lateral direction, and different colors are arranged in a vertical direction. Pixels neighboring in the lateral direction are in line-symmetry with respect to a center line of the neighboring pixels. Liquid crystal molecules have negative dielectric constant anisotropy, and rotate horizontally relative to a substrate plane in a direction of the line-symmetry with respect to the center line when the voltage is applied to the electrodes of the neighboring pixels.