Liquid Crystal Panel Spacer Layout for Aperture Ratio Uniformity
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Solution Overview
Problem
Existing display panels face issues with reduced aperture ratio due to spacer placement at subpixel boundaries, leading to variations in subpixel aperture ratios and chromaticity deviations during substrate bonding.
Innovation Solution
A display panel design with spacers positioned to overlap specific color filters, combined with strategically placed light blocking portions, maintains consistent aperture ratios and suppresses chromaticity variations by avoiding spacer placement at subpixel boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spacers are arranged at the boundary between subpixels of different colors, then the gap between substrates is maintained, but the aperture ratio is reduced
Solution Approach 1:
The patent applies local quality by differentiating spacer placement across different regions. Spacers are strategically positioned only in specific areas (e.g., at boundaries between certain color filters) rather than uniformly across all subpixel boundaries. This localized approach maintains the necessary gap function in critical areas while minimizing aperture ratio reduction in light-emitting regions.
2Ease of manufacture
If spacers are arranged at subpixel boundaries, then substrate bonding is facilitated, but variation in subpixel aperture ratios occurs
Solution Approach 1:
The patent implements local quality by selectively placing spacers at specific subpixel boundaries rather than all boundaries. This differentiated placement strategy ensures that spacer-induced aperture ratio variations are confined to non-critical regions, while critical subpixels maintain uniform aperture ratios for consistent chromaticity.
3Reliability
If light blocking portions are formed to address positional displacement, then chromaticity stability is improved, but aperture ratio is reduced
Solution Approach 1:
The patent applies local quality by positioning light blocking portions specifically in regions where they are most effective for chromaticity stability, rather than uniformly across all areas. The light blocking portions are strategically located to compensate for positional displacement effects while minimizing their impact on overall aperture ratio.
Data Source
AI summary
A liquid crystal panel includes an array substrate, a counter substrate, and spacers for maintaining a gap between the array substrate and the counter substrate. The array substrate includes source wiring lines extending in a first direction, gate wiring lines extending in a second direction intersecting the first direction, a first electrode row obtained by pixel electrodes being arrayed in the first direction, a second electrode row adjacent to the first electrode row and obtained by pixel electrodes being arrayed in the first direction, and first light blocking portions disposed at locations overlapping the spacers in a plan view. One of the counter substrate or the array substrate includes a first color filter and a second color filter overlapping the pixel electrodes of the first electrode row in a plan view and alternately provided in the first direction, and a third color filter overlapping the pixel electrodes of the second electrode row in a plan view and provided in the first direction. The spacers are provided in the second electrode row.