Composite Spacer Structure for Miniaturized LCD Display Substrates
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Solution Overview
Problem
Traditional spacers in liquid crystal display panels made of organic materials are prone to crushing due to poor compressive strength and have difficulty being miniaturized due to limitations in cross-sectional area design, which affects the uniformity and thickness of the display screen.
Innovation Solution
A display substrate with spacers comprising a stacked structure of organic and inorganic material sub-patterns, where the organic sub-patterns provide elasticity and the inorganic sub-patterns enhance compressive strength, allowing for a smaller cross-sectional area and improved stress distribution, enabling better elasticity and compressive strength while minimizing spacer size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional organic material spacers are used, then the spacers provide flexibility and ease of manufacture, but they suffer from poor compressive strength and difficulty in miniaturization
Solution Approach 1:
The spacer is constructed as a composite structure with an organic material layer and an inorganic material layer stacked alternately. The organic layer provides flexibility and elasticity, while the inorganic layer provides compressive strength. This composite structure resolves the contradiction by combining materials with complementary properties to achieve both strength and flexibility without excessive structural complexity.
Solution Approach 2:
The spacer is divided into multiple sub-patterns stacked alternately, with each sub-pattern being a different material (organic or inorganic). This segmentation allows each layer to perform its specific function - the organic layers provide flexibility while the inorganic layers provide structural support and compressive strength, thereby achieving high strength without requiring a monolithic complex structure.
2Length of moving object
If traditional organic material spacers are used, then the spacers are easy to manufacture, but they require a minimum cross-sectional area that limits size reduction
Solution Approach 1:
By using composite organic-inorganic material layers, the spacer achieves high compressive strength in a miniaturized form. The inorganic material layers provide the necessary structural support to prevent crushing, while the organic layers maintain flexibility. This allows the spacer to be reduced in size without sacrificing reliability against crushing forces.
Solution Approach 2:
The inorganic material layers are strategically positioned within the spacer structure to provide localized compressive strength where needed, while the organic material layers provide flexibility in other regions. This local differentiation of material properties allows miniaturization while maintaining resistance to crushing at critical locations.
3Strength
If traditional organic material spacers are used, then the spacers maintain structural integrity, but they lack sufficient compressive strength under pressure
Solution Approach 1:
The alternating organic and inorganic material layers create a composite structure where the inorganic layers bear the compressive loads while the organic layers distribute stresses uniformly. This composite architecture improves compressive strength by utilizing the high stiffness of inorganic materials while maintaining stress distribution through the flexible organic layers.
Solution Approach 2:
By changing the material parameters from purely organic to a composite of organic and inorganic materials, the spacer's mechanical properties are fundamentally altered. The inorganic material layers increase the overall stiffness and compressive strength, while the alternating structure ensures uniform stress distribution throughout the spacer volume.
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 enhances the compressive strength and elasticity of spacers, allowing for smaller, more stable spacers that maintain display uniformity and thickness, addressing the limitations of traditional organic material spacers.
Implementation Method 1
the organic sub-patterns provide elasticity
Implementation Method 2
the inorganic sub-patterns enhance compressive strength
Data Source
AI summary
The present disclosure provides a display substrate, including: a base substrate; and a plurality of spacers on a side of the base substrate and each comprising at least one first sub-pattern and at least one second sub-pattern stacked along a normal direction of the base substrate, the first sub-pattern being made of an organic material and the second sub-pattern being made of an inorganic material. The present disclosure also provides a method for manufacturing the display substrate and a display device.