Display Spacer Layout for Uniform Pixel Aperture Ratios
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Solution Overview
Problem
Current display devices face issues with spacers affecting aperture ratios between pixels, impacting display quality as resolution demands increase.
Innovation Solution
The display device incorporates spacers arranged in staggered rows along specific directions with defined pitches and distances, minimizing interference with pixel regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If spacers are used to maintain thickness between substrates, then structural stability is improved, but aperture ratio uniformity deteriorates
Solution Approach 1:
The spacers are arranged in an asymmetric staggered pattern where odd-row spacers and even-row spacers are offset from each other in the second direction. This asymmetric arrangement prevents spacers from aligning with pixel boundaries, thereby reducing their impact on aperture ratio uniformity while maintaining thickness stability
Solution Approach 2:
The spacer arrangement extends in two directions (first direction along scan lines, second direction along data lines) with staggered positioning in the second direction. This two-dimensional staggered configuration distributes spacers across multiple dimensions, minimizing their concentration in any single pixel region and improving aperture ratio uniformity
2Ease of manufacture
If spacers are arranged in regular patterns, then manufacturing simplicity is improved, but display quality deteriorates
Solution Approach 1:
The spacer array is segmented into odd-row spacers and even-row spacers with different positioning rules. Odd-row spacers are positioned at specific crossing positions while even-row spacers are offset by a predetermined distance, creating a segmented staggered pattern that is simple to manufacture yet effective at maintaining display quality
Solution Approach 2:
The staggered spacer arrangement follows a periodic pattern where spacers in alternating rows are offset from each other. This periodic staggering creates a regular, manufacturable pattern that systematically distributes spacers to minimize their impact on aperture ratios across the display
Data Source
AI summary
ABSTRACT OF DISCLOSUREA display device includes a substrate, scan lines disposed on the substrate and extending along a first direction, data lines disposed on the substrate and extending along a second direction, and spacers. The scan lines and the data lines cross each other at crossing positions and form sub-pixel regions, and one of the sub-pixel regions has a sub-pixel width. The spacers are disposed on the crossing positions and arranged in a plurality of rows in the second direction. The spacers include a plurality of nth row spacers and a plurality of n+1th row spacers arranged along the first direction. The nth row spacers and the n+1th row spacers are staggered in the second direction. A first pitch is included between adjacent two of the spacers in one of the rows in the first direction, and the first pitch is 2-12 times the sub-pixel width.