Liquid Crystal Display With Segmented Polarizers For Viewing Angle Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal displays face challenges in achieving improved viewing angle characteristics and increased transmittance, particularly due to texture generation and light leakage issues at specific azimuthal angles.
Innovation Solution
The implementation of a liquid crystal display design featuring alternating vertical and horizontal slit pixels with specific branch electrode orientations and polarizer configurations, allowing for improved alignment of liquid crystal molecules and enhanced polarizer structures to manage light transmission and polarization effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional liquid crystal display structures are used with standard polarizer configurations, then the device complexity remains low, but viewing angle characteristics deteriorate and light leakage occurs at specific azimuthal angles
Solution Approach 1:
The display panel is divided into first and second pixel regions with different polarizer configurations. The first lower polarizer is disposed at a first azimuthal angle in the first pixel region, while the second lower polarizer is disposed at a second azimuthal angle in the second pixel region. This segmentation allows each region to be optimized for different viewing angle characteristics, thereby improving overall viewing angle performance without requiring complete redesign of the entire display structure.
Solution Approach 2:
Different polarizer azimuthal angles are assigned to different pixel regions based on their specific requirements. The first pixel region uses a first azimuthal angle configuration to optimize for certain viewing angles, while the second pixel region uses a second azimuthal angle configuration to optimize for other viewing angles. This local optimization approach improves viewing angle characteristics in each region without uniformly increasing complexity across the entire display.
2Illumination intensity
If standard polarizer azimuthal angles are used in all pixel regions, then the manufacturing process remains simple, but light leakage occurs at specific azimuthal angles reducing transmittance
Solution Approach 1:
The display panel is divided into first and second pixel regions with different polarizer configurations. The first lower polarizer is disposed at a first azimuthal angle in the first pixel region, while the second lower polarizer is disposed at a second azimuthal angle in the second pixel region. This segmentation allows each region to be optimized for different viewing angle characteristics, thereby improving overall viewing angle performance without requiring complete redesign of the entire display structure.
Solution Approach 2:
Different polarizer azimuthal angles are assigned to different pixel regions based on their specific requirements. The first pixel region uses a first azimuthal angle configuration to optimize for certain viewing angles, while the second pixel region uses a second azimuthal angle configuration to optimize for other viewing angles. This local optimization approach improves viewing angle characteristics in each region without uniformly increasing complexity across the entire display.
3Illumination intensity
If branch electrodes are used to generate electric fields, then the liquid crystal molecules can be controlled to improve transmittance, but texture is generated at the edges of branches causing display defects
Solution Approach 1:
Different polarizer azimuthal angles are assigned to different pixel regions based on their specific requirements. The first pixel region uses a first azimuthal angle configuration to optimize for certain viewing angles, while the second pixel region uses a second azimuthal angle configuration to optimize for other viewing angles. This local optimization approach improves viewing angle characteristics in each region without uniformly increasing complexity across the entire display.
Solution Approach 2:
The patent employs asymmetric polarizer configurations in different pixel regions to counterbalance the symmetric texture patterns that form around branch electrode edges. By introducing asymmetric azimuthal angle variations, the harmful interference patterns are disrupted and converted into beneficial viewing angle characteristics, thereby eliminating texture defects while maintaining transmittance control.
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 enhances viewing angle characteristics and transmittance by reducing light leakage and color coordinate variation, resulting in improved display quality and performance compared to conventional liquid crystal displays.
Implementation Method 1
a voltage is applied to the field generating electrodes to generate an electric field in the liquid crystal layer, which determines the direction of liquid crystal molecules
Implementation Method 2
an image is displayed by controlling the polarization of incident light
Implementation Method 3
a first lower polarizer disposed opposite to the first type pixel and having a transmissive axis approximately parallel to the first direction; and a second lower polarizer disposed opposite to the second type pixel and having a transmissive axis approximately parallel to the second direction
Data Source
AI summary
A liquid crystal display according to an exemplary embodiment of the invention includes: a first type pixel including first liquid crystal molecules aligned approximately in a first direction; a second type pixel including second liquid crystal molecules aligned approximately in a second direction different from the first direction; a first lower polarizer disposed opposite to the first type pixel and having a transmissive axis approximately parallel to the first direction; and a second lower polarizer disposed opposite to the second type pixel and having a transmissive axis approximately parallel to the second direction.