Discrete Bridge Electrodes in Dimming Panels to Reduce Moiré
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Solution Overview
Problem
Dimming panels with horizontal alignment mode suffer from misalignment regions caused by bridge electrodes, leading to deteriorated display quality and moiré issues when overlaid with image-providing liquid crystal panels, as these panels lack shielding components and interfere with conductive lines.
Innovation Solution
A dimming panel design featuring a first substrate with a liquid crystal layer and a second substrate, where the second electrode includes discrete bridge electrodes in slit regions, preventing continuous alignment and reducing the likelihood of misalignment regions being observed as dark lines, and a production method for arranging bridge electrodes to disperse misalignment regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bridge electrodes are used to connect linear electrodes in the second electrode, then electrical connectivity is improved, but misalignment regions are generated causing dark lines and deteriorated display quality
Solution Approach 1:
The patent applies asymmetry by arranging bridge electrodes in a non-uniform pattern rather than symmetric periodic arrangement. Specifically, the bridge electrodes are positioned at different locations in alternating rows, creating an asymmetric distribution that disrupts the formation of continuous dark lines while maintaining electrical connectivity between linear electrodes.
Solution Approach 2:
The patent segments the continuous periodic arrangement of bridge electrodes into discrete, non-uniformly positioned electrodes. By dividing the regular pattern into segmented, irregular positions, the misalignment regions are broken up and dispersed, preventing them from forming observable dark lines while still providing necessary electrical connections.
2Ease of manufacture
If bridge electrodes are periodically arranged in a straight line, then manufacturing is simplified, but misalignment regions align to form observable dark lines
Solution Approach 1:
The patent introduces asymmetry in the bridge electrode arrangement by deliberately avoiding straight-line periodic patterns. Instead, bridge electrodes are positioned at varied locations in alternating rows, creating an asymmetric distribution that prevents misalignment regions from aligning into observable dark lines while maintaining manufacturing feasibility.
Solution Approach 2:
The patent applies preliminary action by pre-planning the non-uniform arrangement pattern of bridge electrodes before manufacturing. The specific positioning strategy for alternating rows is determined in advance to ensure that misalignment regions will be dispersed rather than aligned, preventing dark line formation before the display is even assembled.
3Adaptability or versatility
If a dimming panel is overlaid with an image-providing liquid crystal panel, then display functionality is enhanced, but moiré patterns occur due to interference with conductive lines
Solution Approach 1:
The patent applies asymmetry to the bridge electrode arrangement, which in turn creates an asymmetric pattern of misalignment regions. This asymmetric dispersion prevents regular interference patterns from forming when the dimming panel is overlaid with the image-providing liquid crystal panel, thereby eliminating moiré patterns while maintaining enhanced display functionality.
Solution Approach 2:
The patent converts the potentially harmful effect of bridge electrodes (which create misalignment regions) into a beneficial outcome. By strategically positioning bridge electrodes to disperse misalignment regions rather than align them, the patent transforms what would normally be a source of dark lines and moiré into a solution that prevents these defects and enables successful overlay with image-providing panels.
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 enhances display quality and reduces moiré occurrence by dispersing misalignment regions, ensuring high-quality performance even when overlaid with image-providing liquid crystal panels.
Implementation Method 1
applying voltage to the liquid crystal composition and thereby changing the alignment of liquid crystal molecules and controlling the amount of light transmitted through the dimming panel
Implementation Method 2
The horizontal alignment mode dimming panel utilizes electric fields generated between the first electrode and the second electrode to change the alignment azimuth of the liquid crystal molecules in the liquid crystal layer
Implementation Method 3
electric fields can be generated between the first electrode and the linear electrodes through the portions (i.e., slit regions) formed between the linear electrodes
Data Source
AI summary
The present invention provides a dimming panel sequentially including: a first substrate; a liquid crystal layer; and a second substrate, the first substrate sequentially including an insulating substrate, a first electrode, a first insulator layer, and a second electrode, the second electrode including, in a plan view, linear electrodes parallel to each other with slit regions in between, and bridge electrodes each of which is disposed in one of the slit regions and is connecting two adjacent linear electrodes, the bridge electrodes including a first bridge electrode in a first slit region, a second bridge electrode in a second slit region adjacent to the first slit region, and a third bridge electrode in a third slit region adjacent to the second slit region, the first bridge electrode, the second bridge electrode, and the third bridge electrode being discrete from one another.