3D Display Wire Grid Polarizer Viewing Angle
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Solution Overview
Problem
Conventional 3D display devices have a narrow viewing angle in the vertical direction, which negatively affects the display effect due to the use of retarder films, limiting the effectiveness of the stereoscopic display.
Innovation Solution
A 3D display device is designed with a structure that includes a first and second substrate with a liquid crystal layer, a color filter layer, and wire grid polarizers arranged alternately with different extending directions, along with a ½ phase retarder and alignment films, to separate and control the polarization of light for left-eye and right-eye sub-pixels, enhancing the 3D display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a layer of retarder film is attached to the outer side of the upper polarizer to achieve 3D display effect, then the stereoscopic display is realized, but the viewing angle in the vertical direction becomes very narrow
Solution Approach 1:
The patent removes the external retarder film from the conventional 3D display structure and replaces it with wire grid polarizers integrated into the display panel. This extraction eliminates the component causing narrow viewing angles while maintaining the 3D display function through the wire grid polarizer's ability to separate left and right eye images without requiring additional retardation layers.
Solution Approach 2:
The patent changes the polarization control mechanism from using retarder films with specific retardation parameters to using wire grid polarizers with different wire grid extending directions. By adjusting the orientation and configuration of the wire grids rather than relying on film retardation, the system achieves both 3D display effect and wider viewing angle.
2Adaptability or versatility
If wire grid polarizers with different extending directions are used to separate left-eye and right-eye images, then the viewing angle is improved, but the device structure becomes more complex
Solution Approach 1:
The patent combines multiple wire grid polarizers with different extending directions into a single integrated first polarizer component. Instead of using separate polarizers for left and right eyes, the design merges them into one unified structure that simultaneously performs polarization separation for both eyes, reducing overall device complexity while maintaining wide viewing angle capability.
Solution Approach 2:
The first polarizer with multiple wire grid polarizers serves multiple functions: it separates left-eye and right-eye images, controls polarization directions, and enables wide viewing angles all within a single component. This multi-functionality reduces the number of separate components needed and simplifies the overall device structure.
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 allows for improved 3D display by enabling wider viewing angles and more efficient light management, achieving better stereoscopic display without the need for external retarder films, thus enhancing the overall display effect.
Implementation Method 1
a first polarizer on a side of the first substrate, the first polarizer comprising a plurality of wire grid polarizers arranged in an array, two adjacent ones of the plurality of wire grid polarizers comprising a plurality columns of first sub-wire grid polarizers and a plurality columns of second sub-wire grid polarizers which are alternately arranged with each other and have different wire grid extending directions
Implementation Method 2
a liquid crystal layer between the first substrate and the second substrate
Implementation Method 3
a 1⁄2 phase retarder is provided between the first polarizer and the second polarizer
Data Source
AI summary
A 3D display device comprises first and second substrates disposed opposite one another; a liquid crystal layer; a color filter layer between the first substrate and the liquid crystal layer, a plurality of pixel regions arranged in an array being formed on the color filter layer, and each of the plurality of pixel regions comprising first and second sub-pixels; and a first polarizer on a side of the first substrate, the first polarizer comprising a plurality of wire grid polarizers arranged in an array, two adjacent ones of the plurality of wire grid polarizers comprising a plurality of columns of first sub-wire grid polarizers and second sub-wire grid polarizers which are alternately arranged with each other. An orthographic projection of each column of the first and second sub-wire grid polarizers on the pixel regions is overlapped with at least one column of first sub-pixels and second sub-pixels, respectively.