Dual-Domain LCD Panel with Perpendicular Polarization
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Solution Overview
Problem
Twisted nematic LCD panels have narrow viewing angles, and while in-plane electric field driven LCD panels offer wider viewing angles, they suffer from color shift issues and performance limitations that need improvement.
Innovation Solution
A liquid crystal display panel with a dual-domain structure, featuring regions with stripe-shaped electrodes and organic films having perpendicular polarization directions, which compensates for optical characteristics to mitigate color shift and enhance viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If in-plane electric field driven LCD panels are used to achieve wide viewing angles, then viewing angle is improved, but color shift problem occurs
Solution Approach 1:
The display panel is divided into multiple domains within each pixel, with each domain having stripe-shaped electrodes oriented in different directions. This segmentation allows different viewing angle characteristics to be combined, achieving wide viewing angle without severe color shift.
Solution Approach 2:
Different regions of the same pixel are assigned different electrode orientations and organic film polarization directions. This local differentiation enables each domain to optimize for specific viewing directions while collectively providing wide viewing angle and reduced color shift.
2Adaptability or versatility
If dual-domain structure with different electrode orientations is implemented, then viewing angle is improved, but device complexity increases
Solution Approach 1:
Multiple domains with different orientations are merged within a single pixel structure, sharing common substrates, electrodes, and organic films. This combining approach achieves wide viewing angle functionality without proportionally increasing overall device complexity.
Solution Approach 2:
The stripe-shaped electrodes and organic films serve multiple functions: they create different viewing domains, control liquid crystal alignment, and enable wide viewing angle display. This multi-functionality reduces the need for additional specialized components.
3Object-affected harmful factors
If organic films with perpendicular polarization directions are used in different regions, then color shift is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The organic films are pre-formed with specific polarization directions before liquid crystal alignment. This preliminary establishment of polarization directions provides a template that guides subsequent alignment processes, making precision control more achievable.
Solution Approach 2:
The polarization directions of organic films are controlled by adjusting fabrication parameters such as rubbing direction or photopolymerization angle. By changing these parameters systematically across different regions, precise polarization control is achieved without requiring complex post-processing.
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 dual-domain structure provides a wider viewing angle and uniform display effect by compensating for optical characteristics, reducing color shift and improving the overall image viewing experience.
Implementation Method 1
The first organic film and the second organic film have mutually perpendicular polarization directions. In the first region, the first organic film has a polarization direction in a first direction and the second organic film has a polarization direction perpendicular to the first direction. In the second region, the first organic film has a polarization direction in a second direction and the second organic film has a polarization direction perpendicular to the second direction.
Data Source
AI summary
The present disclosure provides a LCD panel. The LCD panel includes a first substrate, a second substrate, a liquid crystal layer sandwiched between the first substrate and the second substrate, a plurality of regions arranged in an array including a first region and a second region, a first organic film on the first substrate, and a second organic film on the second substrate. In the first region, at least one stripe-shaped first electrode is formed having a first configuration direction, the first organic film has a polarization direction in a first direction and the second organic film has a polarization direction perpendicular to the first direction. In the second region, at least one stripe-shaped second electrode is formed having a second configuration direction, the first organic film has a polarization direction in a second direction and the second organic film has a polarization direction perpendicular to the second direction.