Liquid Crystal Display Panel Non-Parallel Stripe Electrodes
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Solution Overview
Problem
Conventional liquid crystal display panels face challenges in shortening the falling time, which is a critical component of response time, affecting image quality due to the limitations in controlling the restoration of elastic forces between liquid crystal molecules.
Innovation Solution
The liquid crystal display panel design incorporates non-parallel first and second stripe electrodes between the substrates, with a specific voltage difference applied between them during idle periods to assist in the restoration of liquid crystal molecules, thereby shortening the falling time and overall response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional fringe field switching liquid crystal display panels use electric field between common electrode and pixel electrodes to achieve wide viewing angle, then viewing angle is improved, but falling time cannot be effectively shortened due to dependence on elastic force restoration
Solution Approach 1:
The invention introduces separate first and second stripe electrodes that are spatially segmented from the conventional common electrode and pixel electrode structure. These stripe electrodes are disposed at different positions (first stripe electrode between first substrate and liquid crystal layer, second stripe electrode between second substrate and liquid crystal layer) and extend in different directions, creating independent electric field control capabilities that supplement the conventional FFS structure without disrupting its wide viewing angle performance.
Solution Approach 2:
The invention adds a new dimensional aspect to the electric field configuration by introducing stripe electrodes that extend in directions different from the conventional pixel electrode arrangement. The first stripe electrodes extend in a first direction while the second stripe electrodes extend in a second direction that is not parallel to the first direction, creating a multi-dimensional electric field structure that enables additional control over liquid crystal molecule orientation during the falling phase.
2Loss of time
If methods are developed to shorten rising time by controlling electric field between common electrode and pixel electrodes, then rising time is improved, but falling time remains uncontrollable as it depends on elastic force restoration
Solution Approach 1:
The stripe electrodes act as intermediary elements that provide additional electric field control specifically targeted at the falling phase. By applying voltage differences between the first and second stripe electrodes, the invention creates an intermediate control mechanism that assists the elastic forces during molecule restoration, making the previously uncontrollable falling phase amenable to electrical control without interfering with the conventional rising time control mechanism.
Solution Approach 2:
The invention applies voltage to the stripe electrodes in advance during the falling phase to prepare and assist the liquid crystal molecule restoration process. By activating the stripe electrodes before and during the falling phase, the electric field is preliminarily established to work synergistically with the elastic forces, accelerating the molecule return to initial state before the phase transition completes.
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 design effectively reduces the falling time and response time of the liquid crystal display panel, enhancing image quality by accelerating the restoration of liquid crystal molecules to their initial position.
Implementation Method 1
providing a second voltage difference between the at least one first stripe electrode and the at least one second stripe electrode
Implementation Method 2
the falling time, which is dependent on the restoration of elastic forces between liquid crystal molecules
Data Source
AI summary
A liquid crystal display panel includes first and second substrates facing each other, a liquid crystal layer between the first and second substrates, at least one pixel electrode including at least one slit and between the first substrate and the liquid crystal layer, and at least one first stripe electrode and at least one second stripe electrode between the second substrate and the liquid crystal layer. The pixel electrode and the slit extend in a first direction. The first stripe electrodes and the second stripe electrodes extend respectively in a second direction not parallel to the first direction. In a vertical projection direction from the second substrate toward the first substrate, at least a portion of the at least one pixel electrode is disposed between at least one first stripe electrode and at least one second stripe electrode, and the first and second stripe electrodes are separated from each other.