Liquid Crystal Panel Electrode Reset and Viewing Angle Control
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Solution Overview
Problem
Existing liquid crystal panels face challenges in reliably resetting the electric potential of electrodes due to high electrical resistance, which can lead to incomplete discharge of electric charge, affecting the control of light transmittance and viewing angle control.
Innovation Solution
A liquid crystal panel design featuring a first electrode layer with higher sheet resistance than the conductive layer, coupled with a switch to open and close the reset potential path, ensures reliable electric potential resetting and controlled light transmittance across the viewing angle control region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrical resistance of the electrode is increased to control liquid crystal orientation, then the orientation control capability is improved, but the electric potential cannot be reliably reset when voltage application is stopped
Solution Approach 1:
The electrode structure is segmented into multiple layers: a conductive layer (first electrode) and a first electrode layer (second electrode) with higher sheet resistance. This segmentation allows the conductive layer to provide low-resistance discharge paths while the first electrode layer provides high-resistance orientation control, resolving the contradiction between reset reliability and discharge capability
Solution Approach 2:
Different regions of the electrode structure have different electrical properties. The conductive layer has low sheet resistance for reliable potential reset, while the first electrode layer has high sheet resistance for precise orientation control. This local differentiation of electrical properties allows both functions to coexist without compromise
2Reliability
If a high-resistance electrode layer is used for viewing angle control, then the liquid crystal orientation control is improved, but the light transmittance uniformity deteriorates due to potential differences
Solution Approach 1:
The electrode structure provides locally differentiated electrical properties: the first electrode layer has high sheet resistance for precise orientation control at specific locations, while the conductive layer provides low sheet resistance for uniform potential distribution. This local quality differentiation resolves the contradiction between control precision and transmittance uniformity
Solution Approach 2:
The patent merges a high-resistance first electrode layer and a low-resistance conductive layer into a unified electrode structure. The first electrode layer provides viewing angle control while the conductive layer ensures uniform potential distribution, achieving both precise control and uniform light transmittance through combination
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 effectively inhibits image recognition from oblique viewpoints by maintaining uniform light transmittance and enables reliable resetting of the electrode potential, enhancing the panel's viewing angle control and image visibility.
Implementation Method 1
the electrode that is electrically charged and generates an electric field for controlling the orientation of the liquid crystal
Implementation Method 2
there is a configuration that causes a liquid crystal panel to function like a lens
Data Source
AI summary
According to an aspect, a liquid crystal panel includes: a light-transmitting first substrate; a light-transmitting second substrate disposed facing the first substrate with a liquid crystal interposed between the first substrate and the second substrate; a conductive layer provided on the first substrate on a side facing the liquid crystal and comprising wiring lines or electrodes; an insulating layer stacked on the conductive layer on a side facing the liquid crystal; a first electrode layer stacked on the insulating layer on a side facing the liquid crystal; a second electrode layer provided on the second substrate on a side facing the liquid crystal; and a switch capable of opening and closing a coupling path between the first electrode layer and a reset potential. A sheet resistance of the first electrode layer is higher than a sheet resistance of the conductive layer and a sheet resistance of the second electrode layer.