Display Device Spacer Arrangement for Resolution and Strength
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in achieving high resolution due to the mechanical strength issues of small spacers and decreased light transmission, leading to uneven brightness and reduced effective opening ratios of pixels.
Innovation Solution
A display device configuration with a pair of substrates, inter-pixel light blocking portions, and strategically arranged spacers, where the spacer arranged portions are wider than the non-arranged portions, ensuring mechanical strength and maintaining light transmission by optimizing the spacer arrangement to prevent decreases in opening ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If laminated spacers are separately arranged on each pixel to maintain mechanical strength, then the mechanical strength is sufficient, but the resolution cannot be increased because the spacers occupy pixel area and reduce the opening ratio
Solution Approach 1:
The patent divides the spacer arrangement into two distinct regions: a first region where spacers are arranged to provide mechanical strength, and a second region where spacers are not arranged to maintain high opening ratio and resolution. This segmentation allows each region to serve its specific function without compromising the other.
Solution Approach 2:
The patent applies different spacer arrangement strategies to different regions of the display device. The first region has spacers arranged to ensure mechanical strength, while the second region has no spacers to maintain optical performance. This local differentiation resolves the contradiction by allowing each region to have the quality it needs.
2Illumination intensity
If laminated spacers are moved inside pixels to avoid blocking light, then light transmission is improved, but the mechanical strength becomes insufficient and production becomes difficult
Solution Approach 1:
The patent segments the display area into regions with spacers and regions without spacers, allowing light transmission to be maximized in the pixel regions while mechanical strength is maintained in the dedicated spacer regions.
Solution Approach 2:
The patent extracts the spacer function from the pixel area and places it in dedicated regions outside the pixels. This extraction allows pixels to focus on light transmission while spacers focus on mechanical support.
3Strength
If the formation area of spacers is increased to ensure mechanical strength, then the mechanical strength is sufficient, but the opening ratio of pixels decreases
Solution Approach 1:
The patent clearly segments the display device into pixel regions and non-pixel regions, with spacers located only in the non-pixel regions. This segmentation ensures that spacer formation area does not encroach on pixel opening area, thereby maintaining both mechanical strength and high opening ratio.
Data Source
AI summary
A display device includes substrates, pixels, an inter-pixel light blocking portion, a spacer, a spacer non-arranged portion, and a spacer arranged portion. The pixels are arranged in each of a first direction and a second direction perpendicular to each other. The inter-pixel light blocking portion includes at least one first partition portion partitioning the pixels arranged in the first direction and at least one second partition portion partitioning the pixels arranged in the second direction. The spacer is disposed between the substrates. The spacer non-arranged portion in which the spacer is not arranged is included in the first partition portion. The spacer arranged portion in which the spacer is arranged is included in the first partition portion. The spacer arranged portion wider than the spacer non-arranged portion has a formation area straddling the second partition portion with respect to the second direction.