Nano-Capsule LCD with Delta Electrodes for Uniform Color
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Solution Overview
Problem
Conventional liquid crystal display (LCD) devices face challenges such as non-uniform color coordinates, bluish image display, and increased production costs due to complex alignment processes and the need for two substrates, which can be prone to gap changes under external pressure.
Innovation Solution
The implementation of a nano capsule liquid crystal layer dispersed in a buffer layer, with electrodes arranged in a delta structure and polarizing plates perpendicular to each other, allowing for a single-substrate LCD that eliminates alignment layer processes and maintains optical isotropy without external pressure issues, achieving uniform color coordinates and white balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alignment layers are printed and rubbed to align liquid crystal, then liquid crystal alignment is achieved, but production rate is reduced
Solution Approach 1:
The patent extracts and removes the alignment layers from the liquid crystal display structure. Instead of using traditional alignment layers that require printing and rubbing processes, the invention uses liquid crystal molecules that can self-align through their inherent properties, thereby eliminating the complex alignment processes and improving production rate while maintaining alignment quality
Solution Approach 2:
The liquid crystal molecules are designed to self-align automatically without external alignment layers. The molecules possess inherent properties that enable them to orient themselves in the desired direction through self-organization, eliminating the need for manual alignment processes and significantly improving manufacturing efficiency
2Reliability
If two substrates are attached with liquid crystal layer between them, then liquid crystal display function is achieved, but gap changes under external pressure or impact degrade display quality
Solution Approach 1:
The patent employs flexible thin film structures that can accommodate external pressure and impact without creating gaps between substrates. The thin film design allows for elastic deformation that absorbs mechanical stress, maintaining the integrity of the liquid crystal layer and preventing display quality degradation while preserving the essential two-substrate structure for liquid crystal display functionality
3Ease of operation
If conventional liquid crystal layer is used, then liquid crystal display operation is achieved, but non-uniform color coordinates and bluish image occur
Solution Approach 1:
The patent changes the optical parameters of the liquid crystal system by introducing specific refractive index matching between the liquid crystal molecules and the surrounding medium. This parameter adjustment eliminates optical anisotropy issues that cause non-uniform color coordinates and bluish images, while maintaining the liquid crystal's ability to respond to electric fields for display operation
Solution Approach 2:
The invention creates a composite liquid crystal system where liquid crystal molecules are dispersed in a medium with matched refractive index. This composite structure combines the electro-optic properties of liquid crystals with the optical uniformity of the surrounding medium, achieving both operational functionality and color coordinate uniformity without the defects of conventional liquid crystal layers
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 enables a lightweight, cost-effective LCD with improved light transmittance and reduced production defects, preventing bluish images and achieving a uniform color coordinate by controlling refractive indices and electric field alignment.
Implementation Method 1
maintains optical isotropy without external pressure issues, achieving uniform color coordinates and white balance
Implementation Method 2
controlling refractive indices and electric field alignment
Data Source
Figure 1
Figure 2~3
Figure 4A
AI summary
The application relates to a nano-capsule liquid crystal display device (100) including a substrate (101) including a unit pixel (200) having first to third sub-pixels (SP1, SP2, SP3) arranged in a delta structure; and a first electrode (120) and a second electrode (130) in each of the first to third sub-pixels (SP1, SP2, SP3), each of the first and second electrodes (120, 130) including a first bar (120a, 130a) and a plurality of second bars (120b, 130b) branching off from the first bar (120a, 130a), the first bar (120a) of the first electrode (120) and the first bar (130a) of the second electrode (130) facing each other and being parallel with each other, the second bars (120b) of the first electrode (120) and the second bars (130b) of the second electrode (130) interleaved with each other, wherein the first (120a, 130a) and second bars (120b, 130b) of the third sub-pixel (SP3) make first and second angles (81, 82), respectively, relative to a first polarization axis (P1), wherein at least one of the first and second sub-pixels (SP1, SP2) includes a blue color filter, and the third sub-pixel (SP3) includes a red or green color filter, so as to prevent display of a bluish image.