Liquid Crystal Display Panel Light Guidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In liquid crystal display panels, the need for a wide light-shielding portion to prevent light leakage in dark mode reduces the width of the light-transmitting portion, limiting resolution and aperture ratio, and affecting luminous efficiency.
Innovation Solution
A liquid crystal display panel with a substrate and electrode layer that forms liquid crystal optical elements, such as lenses or gratings, to guide light to either the light-shielding or light-transmitting portions based on voltage configurations, allowing for reduced light-shielding width while preventing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the width of the light-shielding portion is increased to prevent light leakage in dark mode, then light leakage prevention is improved, but the width of the light-transmitting portion decreases, limiting resolution and aperture ratio
Solution Approach 1:
The patent applies dynamics by using voltage-controlled liquid crystal optical elements that can dynamically change their state between dark mode (where they guide light to light-shielding portions) and gray-scale display mode (where they guide light to light-transmitting portions). This dynamic behavior allows the same structure to serve different functions based on operational requirements, eliminating the need for fixed, overly wide light-shielding portions.
Solution Approach 2:
The patent utilizes parameter changes by controlling the voltage applied to the liquid crystal layer to change the refractive index and optical properties of the liquid crystal optical elements. By adjusting voltage parameters, the system switches between different optical states (dark mode vs. gray-scale display mode), allowing the light-shielding portion width to be reduced while maintaining light leakage prevention capability.
2Reliability
If the width of the light-shielding portion is increased to prevent light leakage, then dark-mode light leakage is reduced, but the aperture ratio of the pixels decreases, affecting luminous efficiency
Solution Approach 1:
The liquid crystal optical elements dynamically adjust their light guidance function based on voltage input. In dark mode, they concentrate light to the light-shielding portions to prevent leakage. In gray-scale display mode, they redirect light to the light-transmitting portions to maximize luminous efficiency. This dynamic adaptability resolves the contradiction between light leakage prevention and luminous efficiency.
Solution Approach 2:
By changing the voltage parameter applied to the liquid crystal layer, the system alters the optical properties of the liquid crystal optical elements. This parameter change enables the same physical structure to achieve both light leakage prevention in dark mode and high luminous efficiency in gray-scale display mode, eliminating the need for increased light-shielding portion width.
3Shape
If a light-extracting grating is used to obtain collimated light, then light collimation is achieved, but diffraction by the aperture and processing deviations cause light divergence
Solution Approach 1:
The patent introduces liquid crystal optical elements as an intermediary component between the light-extracting grating and the light-shielding portions. These liquid crystal elements act as a dynamic mediator that compensates for light divergence caused by grating aperture diffraction and processing deviations. By controlling the refractive index of the liquid crystal material through voltage, the system can correct optical path deviations and maintain precise light guidance.
Solution Approach 2:
The liquid crystal optical elements utilize voltage-controlled parameter changes in their refractive index to compensate for light divergence. By adjusting the electric field strength through voltage application, the system dynamically modifies the optical properties of the liquid crystal material, enabling it to counteract diffraction effects and processing deviations from the light-extracting grating.
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 enhances the aperture ratio and light utilization efficiency by reducing the light-shielding portion's width while maintaining effective dark-state light control and improving gray-scale display performance.
Implementation Method 1
the liquid crystal layer is adaptable to form an array of liquid crystal optical elements according to voltages of the electrodes
Implementation Method 2
the array of the liquid crystal optical elements serves as a liquid crystal grating, and the liquid crystal display panel performs display with use of diffraction by the liquid crystal grating
Implementation Method 3
the array of liquid crystal optical elements serves as a liquid crystal grating, and the liquid crystal display panel performs display with use of diffraction and refraction by the liquid crystal grating
Data Source
AI summary
The present disclosure provides a liquid crystal display panel, an operating method thereof, and a liquid crystal display device. A liquid crystal display panel comprises: A liquid crystal display panel comprising: a first substrate including light-shielding portions and light-transmitting portions; an electrode layer including a plurality of discrete electrodes; a liquid crystal layer; wherein the liquid crystal layer is adaptable to form an array of liquid crystal optical elements according to voltages of the electrodes, and wherein the voltages of the electrodes are configured such that the array of liquid crystal optical elements formed in the liquid crystal layer guides light to the light-shielding portions of the first substrate, to perform a dark-state (L0) display, wherein the light is incident onto the liquid crystal layer.