Liquid Crystal Panel High Sheet Resistance Electrode
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Solution Overview
Problem
Current liquid crystal panels struggle to reliably inhibit image visibility from oblique viewpoints due to varying viewing angles, leading to inconsistent light transmittance and potential image recognition issues.
Innovation Solution
A liquid crystal panel configuration featuring a light-transmitting first substrate, a wiring layer with arrayed wiring lines, an insulating layer, a high-sheet-resistance first electrode layer, and a low-sheet-resistance second electrode layer, where the sheet resistance of the first electrode layer is higher than both the wiring layer and the second electrode layer, allowing for controlled light transmittance and viewing angle management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional viewing angle control panel is used, then the display can be viewed from certain angles, but the image may still be visually recognized from oblique viewpoints due to varying inclination angles between near and far sides
Solution Approach 1:
The patent applies local quality by creating different electrical potential conditions at different horizontal positions within the liquid crystal layer. By arranging multiple electrode pairs (first and second electrodes) at different horizontal positions and applying different voltages to each pair, the liquid crystal molecules are controlled to have different tilt angles at different horizontal positions. This local differentiation of electrical conditions achieves uniform light transmittance across the display surface when viewed obliquely, preventing image recognition from side viewpoints while maintaining viewing functionality.
2Illumination intensity
If the sheet resistance of the first electrode layer is made higher than the wiring layer and second electrode layer, then light transmittance uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by specifically controlling the sheet resistance values of different electrode layers. The first electrode layer is designed with higher sheet resistance than both the wiring layer and the second electrode layer. This parameter differentiation creates appropriate electrical potential gradients within the liquid crystal layer, enabling uniform light transmittance when viewed obliquely. The specific relationship (first electrode sheet resistance > wiring layer sheet resistance and first electrode sheet resistance > second electrode sheet resistance) optimizes the electrical field distribution to achieve consistent viewing characteristics across different positions.
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 between near and far positions, enhancing visibility for users viewing directly while preventing oblique recognition, thus addressing the challenge of inconsistent image visibility.
Implementation Method 1
a first electrode layer stacked on the insulating layer on a side facing the liquid crystal; and a second electrode layer provided on the second substrate on a side facing the liquid crystal
Implementation Method 2
a liquid crystal interposed between the first substrate and the second substrate
Data Source
AI summary
According to an aspect, a liquid crystal panel includes: a first substrate that is a light-transmitting substrate; a second substrate that is disposed facing the first substrate with a liquid crystal interposed between the first substrate and the second substrate and is a light-transmitting substrate; a wiring layer provided on the first substrate on a side facing the liquid crystal and comprising a plurality of wiring lines arrayed in a predetermined direction; an insulating layer stacked on the wiring layer on a side facing the liquid crystal; a first electrode layer stacked on the insulating layer on a side facing the liquid crystal; and a second electrode layer provided on the second substrate on a side facing the liquid crystal. A sheet resistance of the first electrode layer is higher than a sheet resistance of the wiring layer and a sheet resistance of the second electrode layer.