Patterned Retarder and Variable Black Matrix for 3D Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image display devices that implement both 2D and 3D images face challenges in maintaining high luminance for 2D images while widening the 3D vertical viewing angle, often requiring additional light sources and optical films, which increase manufacturing costs and reduce competitiveness.
Innovation Solution
The image display device features a patterned retarder and a specific configuration of black matrices on a display panel, where the black matrices are strategically placed to minimize interference between left and right 3D images, allowing for a wider 3D viewing angle without increasing the number of light sources or adding separate optical films, by aligning the patterned retarder with the black matrices and optimizing the pixel array configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If black stripes are formed in the patterned retarder area to widen the 3D vertical viewing angle, then the 3D vertical viewing angle is widened, but the luminance of the 2D image is significantly reduced and moiré is generated
Solution Approach 1:
The patent applies local quality by making the black matrix width variable rather than uniform. Specifically, the black matrix width is increased only at boundary portions between first and second retarders where 3D image separation is needed, while maintaining normal width in other areas. This localized adjustment widens the 3D vertical viewing angle at critical positions without significantly reducing the overall opening area and luminance of the 2D image.
2Shape
If the black matrix width is increased to widen the 3D vertical viewing angle, then the 3D vertical viewing angle is widened, but the opening area of pixels is reduced to about 65%, significantly reducing the luminance of the 2D image
Solution Approach 1:
The patent applies local quality by making the black matrix width variable rather than uniform. Specifically, the black matrix width is increased only at boundary portions between first and second retarders where 3D image separation is needed, while maintaining normal width in other areas. This localized adjustment widens the 3D vertical viewing angle at critical positions without significantly reducing the overall opening area and luminance of the 2D image.
3Illumination intensity
If additional light sources and double brightness enhancement film are added to compensate for luminance loss, then the luminance of the 2D image is compensated, but the manufacturing cost increases
Solution Approach 1:
The patent extracts and eliminates the need for additional compensation components (double brightness enhancement film and extra light sources) by optimizing the black matrix configuration. By strategically increasing the black matrix width only at critical boundary portions, the patent achieves both 3D viewing angle widening and luminance maintenance through the existing optical system, thereby removing the need for additional expensive components.
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 enhances the luminance of both 2D and 3D images while maintaining a wide 3D vertical viewing angle, reducing the need for additional light sources and optical films, thereby minimizing manufacturing costs and improving competitiveness.
Implementation Method 1
a patterned retarder configured to divide light from the display panel, on which the 3D image is implemented, into a first polarization component and a second polarization component
Data Source
AI summary
An image display device includes a display panel, which includes a plurality of pixels and selectively implements a 2D image and a 3D image, and a patterned retarder for dividing light from the display panel, on which the 3D image is implemented, into first and second polarization components. The display panel includes first to fourth gate lines, which cross a data line and are disposed along a column direction in the order named, first and second pixels which are disposed between the first and second gate lines to be vertically adjacent to each other, third and fourth pixels which are disposed between the third and fourth gate lines to be vertically adjacent to each other, and a black matrix spatially for separating left and right images of the 3D image from each other.