Shutter Panel Electrode Protrusions for 3D Display Line Elimination
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Solution Overview
Problem
Shutter panels in three-dimensional image display devices often result in a perceived line between electrode regions due to differences in refractive index, degrading the three-dimensional image quality.
Innovation Solution
The shutter panel design features electric field forming electrodes with protrusion parts on their side surfaces, where each electrode has at least one side surface with protrusions facing adjacent electrodes, preventing the region between electrodes from being perceived as a line by ensuring the protrusions' height is equal to or greater than half the distance between neighboring electrodes, and the distance between slopes ranges from about 3 μm to 5 μm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electrodes are arrayed in a striped pattern on the glass substrate, then the shutter panel can function as a three-dimensional image display device, but the region between electrodes is perceived as a line due to refractive index differences, degrading image quality
Solution Approach 1:
The patent introduces protrusion parts on the side surfaces of electrodes, extending the electrode structure from a two-dimensional planar pattern to a three-dimensional configuration. This dimensional change allows the protrusions to physically bridge the gaps between adjacent electrodes, eliminating the perceived lines caused by refractive index differences while preserving the striped electrode pattern necessary for three-dimensional image display functionality
2Object-affected harmful factors
If protrusion parts are added to electrode side surfaces to eliminate perceived lines, then image quality improves, but electrode structure complexity increases
Solution Approach 1:
The patent applies local quality modification by adding protrusion parts only to the side surfaces of electrodes where they are needed to eliminate perceived lines, while maintaining the original flat electrode structure in the regions where it functions. This localized modification allows the electrode structure to have different properties in different regions: protruding surfaces for optical quality improvement and flat surfaces for electrical functionality, thereby reducing overall structural complexity compared to a fully three-dimensional electrode design
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 design effectively eliminates the perception of lines between electrode regions, enhancing the overall quality of the three-dimensional image displayed by maintaining a uniform light transmission and preventing light blocking, thereby improving the visual experience.
Implementation Method 1
A shutter panel of a three-dimensional image display device has a liquid crystal panel structure, which includes two glass substrates provided with a transparent electrode and a liquid crystal layer between the glass substrates
Implementation Method 2
Since the refractive index of the liquid crystal layer at the electrode, however, is different from the refractive index of the liquid crystal layer in a region between the electrodes, the region between the electrodes may be perceived as a line
Data Source
AI summary
Provided is a shutter panel including a first substrate on which a plurality of electric field forming electrodes are parallel to each other, a second substrate opposed to the first substrate, and a liquid crystal layer disposed on the first and second substrates. Each of the electric field forming electrodes has both side surfaces facing the adjacent electric field forming electrodes, and both side surfaces are provided with protrusion parts protruding toward the adjacent electric field forming electrodes.