Curved Display Light Blocking Layers for Alignment Defects
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Solution Overview
Problem
Curved display devices face challenges in maintaining display quality due to misalignment issues between substrates when curved, leading to alignment defects and reduced aperture ratio.
Innovation Solution
Incorporating a light blocking member with varying widths, where a first light blocking layer with a narrower width is placed between domains with the same alignment direction and a second light blocking layer with a wider width is placed between domains with different alignment directions, to cover misalignment areas and improve aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light blocking member with uniform width is used in curved display devices, then the manufacturing process is simple, but alignment defects occur due to substrate misalignment when curved
Solution Approach 1:
The light blocking member is divided into multiple light blocking layers with different widths. Each layer is positioned at specific domains to address different misalignment scenarios, segmenting the uniform structure into functional zones that handle alignment defects more effectively
Solution Approach 2:
Different widths of light blocking layers are applied to different domains based on their specific alignment requirements. Domains with higher misalignment risk receive wider light blocking layers for better coverage, while domains with lower risk use narrower layers to maintain aperture ratio
2Reliability
If wider light blocking layers are used to cover misalignment areas, then alignment defects are reduced, but the aperture ratio decreases
Solution Approach 1:
The light blocking layers are configured with varying widths according to the specific alignment needs of different domains. This localized approach ensures that wider layers are only used where necessary to cover misalignment areas, while narrower layers are used in other domains to maximize the aperture ratio
Solution Approach 2:
Instead of applying uniform wide light blocking layers across all domains, the invention applies wider layers only partially to specific domains where misalignment occurs, and uses narrower layers elsewhere to maintain overall aperture ratio
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
The solution effectively addresses misalignment defects and enhances the aperture ratio of curved display devices by strategically placing light blocking layers, ensuring improved display quality and immersion.
Implementation Method 1
The light blocking member is disposed on the first substrate or the second substrate to block a light
Data Source
AI summary
A curved display device includes a first substrate curved along a first direction and comprising pixel areas defined therein, a second substrate coupled to the first substrate and curved together with the first substrate, a liquid crystal layer interposed between the first substrate and the second substrate and comprising liquid crystal molecules, and a light blocking member disposed on the first substrate or the second substrate to block a light, where domains are defined in each of the pixel areas and arranged in a second direction crossing the first direction, the domains are arranged in a matrix form in the pixel areas, and the light blocking member includes a first light blocking layer having a first width and a second light blocking layer having a second width greater than the first width.