3D Display Panel Phase Difference Plate Integration
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Solution Overview
Problem
The manufacturing process of 3D display panels using phase difference plates faces challenges such as low alignment accuracy, low yield, severe crosstalk, light loss due to adhesives, and reduced viewing angle due to the distance between light emitting points and the phase difference plate.
Innovation Solution
A 3D display panel configuration with a liquid crystal layer between two substrates, where a phase difference plate is directly disposed on the exterior surface of one substrate, featuring an alignment layer divided into regions with different alignment directions, functioning as a phase difference plate, and utilizing reactive mesogens to enhance the display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a phase difference plate is attached to the display panel using adhesive and substrate, then the phase difference function is achieved, but alignment accuracy is low and manufacturing precision deteriorates
Solution Approach 1:
The patent combines the phase difference plate function directly into the color filter layer by forming different retardation regions within the same layer structure. This eliminates the need for a separate phase difference plate and adhesive layer, thereby improving alignment accuracy and reducing manufacturing complexity.
Solution Approach 2:
The color filter layer is designed to serve dual functions: both color filtering and phase difference control. By forming different retardation regions (first retardation regions and second retardation regions) within the color filter layer, the patent achieves phase difference effects without requiring additional components.
2Loss of energy
If adhesive layer and substrate are added for phase difference plate attachment, then the phase difference function is achieved, but light loss increases
Solution Approach 1:
The patent removes the adhesive layer and separate substrate from the structure by integrating the phase difference function into the color filter layer itself. This extraction of unnecessary components reduces light loss while maintaining the phase difference effect.
3Length of moving object
If distance from light emitting points to phase difference plate is increased, then attachment is achieved, but viewing angle is reduced
Solution Approach 1:
By merging the phase difference plate function with the color filter layer, the patent eliminates the physical distance between the light emitting points and the phase difference control layer. This integration maintains optimal optical path length and preserves wide viewing angles.
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 improves alignment accuracy, increases yield, reduces light loss, and enhances the viewing angle, resulting in a cost-effective and effective 3D display solution.
Implementation Method 1
the alignment layer is divided into a plurality of regions with at least two different alignment directions and functions itself as a phase difference plate
Implementation Method 2
one row has a λ/2 retardation (λ is the wavelength of light), and one row has a zero retardation. The light emitted from pixels for the portion having the λ/2 retardation rotates, after passing through the phase difference plate, 90° in its polarization direction
Data Source
Figure 1~2
Figure 2(a)~13
Figure 3A~3B
AI summary
Embodiments of the application provide a three dimensional (3D) display panel and a method of manufacturing a patterned phase difference plate comprised in the three dimensional (3D) display panel. The 3D display panel comprises: a display panel (1) which comprises a first substrate (11) and a second substrate (12) facing each other, the first substrate (11) comprising a first polarizer (112), the second substrate (12) comprising a second polarizer (122); and a patterned phase difference plate (2) which is directly disposed on the surface of the first substrate (11) on the opposite side of the second substrate (12).