IPS-ADS Hybrid Electrode Structure for LCD Transmittance
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Solution Overview
Problem
Current LCD panels with wide viewing angles, such as IPS and ADS mode panels, suffer from low aperture opening ratio and transmittance due to limitations in electrode configurations, resulting in suboptimal display quality.
Innovation Solution
A display panel incorporating both IPS and ADS mode electrode units with distinct electrode angles, optimized for positive and negative dielectric anisotropy liquid crystals, to enhance the effective switching area and transmittance, thereby improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If IPS mode electrode units are used with horizontal rotation switching, then the angle of view is increased to about 180°, but the aperture opening ratio and transmittance are reduced due to small valid switching area
Solution Approach 1:
The patent combines IPS mode electrode units and ADS mode electrode units within the same liquid crystal display panel. The IPS mode units provide wide viewing angle through horizontal rotation switching, while the ADS mode units compensate for the reduced transmittance and aperture opening ratio by generating multidimensional electric fields that rotate liquid crystal molecules over the electrodes, thereby achieving both wide viewing angle and high transmittance simultaneously
2Illumination intensity
If ADS mode electrode units are used with multidimensional electric field, then the transmittance and aperture opening ratio are improved, but the device complexity increases due to multi-layer electrode structure
Solution Approach 1:
The patent merges IPS mode and ADS mode electrode units into a single display panel structure. The IPS mode units use simple strip-shaped electrodes arranged alternately in the same plane, while the ADS mode units use slit electrodes and plate electrodes in different layers. This combination allows the panel to achieve high transmittance through the ADS mode units while maintaining the structural simplicity of IPS mode units, thereby reducing overall device complexity
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 combination of IPS and ADS mode electrode units with tailored electrode angles improves the aperture opening ratio and transmittance, leading to better display performance and wider viewing angles without additional compensation films.
Implementation Method 1
The IPS mode LCD panel increases an angle of view by an in-plane switching of liquid crystal molecules 4, which enables the liquid crystal molecules 4 to rotate with a maximum plane rotation angle
Implementation Method 2
liquid crystals in the liquid crystal layer are positive dielectric anisotropy liquid crystals
Implementation Method 3
An electrical field generated between the pixel electrodes 1 and common electrodes 2 drives the liquid crystal molecules 4 to rotate in a plane
Data Source
AI summary
The embodiments of the present invention provides a display panel comprising a liquid crystal layer and a plurality of pixel units; the pixel units comprise at least two electrode units; the electrode units comprise an IPS mode electrode unit and an ADS mode electrode unit; the IPS mode electrode unit has an electrode angle different from an electrode angle of the ADS mode electrode unit. The present invention further provides a display device comprising the display panel.