Display Optical Member Inclined Insulating Layer Side Visibility
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Solution Overview
Problem
Conventional display apparatuses suffer from limited side visibility due to narrow viewing angles, as the light outputted from the display panel is not effectively diffused to improve visibility when viewed from the side.
Innovation Solution
The display apparatus incorporates an optical member with a base substrate and multiple insulating layers, where the first insulating layer has an inclined surface forming an angle greater than 70 degrees with the base substrate, creating a cavity and holes that connect the layers, allowing light to be refracted and diffused, thereby increasing the viewing angle and improving side visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional display panel structure is used, then the manufacturing process is simple, but the viewing angle is narrow and side visibility is poor
Solution Approach 1:
The base substrate is divided into multiple first areas, each containing first sub-areas and second sub-areas. The first insulating layer is selectively formed in different patterns across these sub-areas, creating segmented optical regions that collectively improve side visibility while maintaining a structured, manageable design
Solution Approach 2:
The first insulating layer is formed with an inclined portion that creates a three-dimensional cavity structure above the base substrate. This vertical dimensionality change introduces new optical paths for light diffusion, enabling improved side visibility without increasing horizontal device footprint
2Adaptability or versatility
If an optical member with inclined insulating layer is added, then the viewing angle increases and light diffusion improves, but the manufacturing complexity increases
Solution Approach 1:
The first insulating layer is formed with different configurations in different regions: inclined portions in second sub-areas for light diffusion, and contact portions in first sub-areas for structural support. This local differentiation optimizes optical performance in specific zones while managing manufacturing complexity through region-specific design
Solution Approach 2:
The inclined portion of the first insulating layer creates a curved or angled surface rather than a flat structure. This curvature facilitates light diffusion by refracting light at multiple angles, improving viewing angle adaptability while the gradual inclination (70-90 degrees) maintains manufacturability through standard deposition techniques
3Illumination intensity
If the first insulating layer is spaced apart from the base substrate to form a cavity, then light diffusion is enhanced, but the device structure becomes more complex
Solution Approach 1:
The cavity structure created by spacing the first insulating layer from the base substrate introduces a porous or void space that allows light to scatter and diffuse more effectively. This porous-like structure enhances light diffusion performance while maintaining a relatively simple two-layer configuration
Solution Approach 2:
The second insulating layer is disposed on top of the first insulating layer, creating a nested multi-layer structure. The cavity is formed within this nested arrangement, allowing light diffusion functionality to be integrated within the layered structure without requiring separate external components
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 optical member enhances side visibility by diffusing light, increasing the viewing angle and improving the display's ability to be seen from various directions, thus addressing the limitations of conventional display technologies.
Implementation Method 1
a first insulating layer disposed on the base substrate, where the first insulating layer includes an inclined portion disposed in the second sub-areas and forming an angle with a top surface of the base substrate
Data Source
AI summary
A display apparatus includes a display panel and an optical member disposed on the display panel. The optical member includes a base substrate on which a plurality of first areas including a plurality of first sub-areas and a plurality of second sub-areas surrounding the first sub-areas, respectively, and a second area around each of the first areas are defined, and a first insulating layer disposed on the base substrate, where the first insulating layer includes an inclined portion disposed in the second sub-areas and forming an angle with a top surface of the base substrate.