Liquid Crystal Display Device Dynamic Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal display devices face a trade-off between increasing response speed and maintaining transmittance, as narrowing slit pitches to enhance response speed often results in lower transmittance, and existing modes struggle to balance these factors effectively.
Innovation Solution
The liquid crystal display device employs a high-speed response mode with a unique electrode configuration, including branch areas and gap areas, and a mode switching function that adjusts voltage application to prioritize either response speed or transmittance based on conditions, utilizing a controller to switch between first and second modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the slit pitch is narrowed to increase response speed, then the response speed is improved, but the transmittance is lowered
Solution Approach 1:
The patent applies dynamics by enabling the liquid crystal display device to switch between two operational modes: a first mode with higher voltage for high response speed, and a second mode with lower voltage for high transmittance. This dynamic switching allows the system to adapt its performance characteristics based on operational requirements, resolving the contradiction between response speed and transmittance by making both achievable under different conditions.
Solution Approach 2:
The patent changes key parameters including voltage levels (higher in first mode, lower in second mode), slit pitch dimensions, and cell gap measurements to optimize the balance between response speed and transmittance. By adjusting these parameters, the device can achieve high response speed when needed while maintaining high transmittance when speed is less critical.
2Speed
If the voltage applied to the pixel electrode is increased to improve response speed, then the response speed is improved, but the transmittance is reduced
Solution Approach 1:
The patent implements dynamic voltage control by applying higher voltages in the first mode to achieve fast response and lower voltages in the second mode to maintain high transmittance. The controller dynamically switches between these voltage levels based on the operational mode, allowing the system to optimize between response speed and transmittance rather than being locked into a single voltage setting.
Solution Approach 2:
The patent employs periodic switching between two voltage application regimes: periodic high-voltage application for response speed optimization and periodic low-voltage application for transmittance optimization. This periodic alternation between different voltage states allows the display to achieve both high response speed and high transmittance at different times based on display content and performance requirements.
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 allows for a higher response speed while maintaining or improving transmittance by strategically using low-speed response areas and optimizing electrode configurations, such as slit pitches and cell gaps, to balance performance.
Implementation Method 1
The common electrode is opposed to the pixel electrode, generates an electric field between the common electrode and the pixel electrode, and rotates the liquid crystal molecules
Data Source
AI summary
According to one embodiment, a first substrate includes a pixel electrode, a common electrode and a sub-pixel area including a first area and a second area. The first area includes an area where the pixel electrode exists, an axial area extending in a second direction, and branch areas extending from the axial area to a first side of the first direction. The second area includes an area where the pixel electrode does not exist, and a first gap area extending in the first direction, at a position between the adjacent branch areas. A maximum value of a first voltage applied to the pixel electrode in a first mode is higher than a maximum value of a second voltage applied to the pixel electrode in a second mode.